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<!--Copyright (C) 2002-2006 Unimod; this information may be copied, distributed and/or-->
<!--modified under certain conditions, but it comes WITHOUT ANY WARRANTY; see the-->
<!--accompanying Design Science License for more details-->
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      <umod:elem title="2H" full_name="Deuterium" avge_mass="2.014101779"
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      <umod:elem title="Li" full_name="Lithium" avge_mass="6.941" mono_mass="7.016003"/>
      <umod:elem title="C" full_name="Carbon" avge_mass="12.0107" mono_mass="12"/>
      <umod:elem title="13C" full_name="Carbon13" avge_mass="13.00335483"
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      <umod:elem title="F" full_name="Fluorine" avge_mass="18.9984032" mono_mass="18.99840322"/>
      <umod:elem title="Na" full_name="Sodium" avge_mass="22.98977" mono_mass="22.9897677"/>
      <umod:elem title="P" full_name="Phosphorous" avge_mass="30.973761" mono_mass="30.973762"/>
      <umod:elem title="S" full_name="Sulfur" avge_mass="32.065" mono_mass="31.9720707"/>
      <umod:elem title="Cl" full_name="Chlorine" avge_mass="35.453" mono_mass="34.96885272"/>
      <umod:elem title="K" full_name="Potassium" avge_mass="39.0983" mono_mass="38.9637074"/>
      <umod:elem title="Ca" full_name="Calcium" avge_mass="40.078" mono_mass="39.9625906"/>
      <umod:elem title="Fe" full_name="Iron" avge_mass="55.845" mono_mass="55.9349393"/>
      <umod:elem title="Ni" full_name="Nickel" avge_mass="58.6934" mono_mass="57.9353462"/>
      <umod:elem title="Zn" full_name="Zinc" avge_mass="65.409" mono_mass="63.9291448"/>
      <umod:elem title="Se" full_name="Selenium" avge_mass="78.96" mono_mass="79.9165196"/>
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      <umod:elem title="Hg" full_name="Mercury" avge_mass="200.59" mono_mass="201.970617"/>
      <umod:elem title="Au" full_name="Gold" avge_mass="196.96655" mono_mass="196.966543"/>
      <umod:elem title="I" full_name="Iodine" avge_mass="126.90447" mono_mass="126.904473"/>
      <umod:elem title="Mo" full_name="Molybdenum" avge_mass="95.94" mono_mass="97.9054073"/>
      <umod:elem title="Cu" full_name="Copper" avge_mass="63.546" mono_mass="62.9295989"/>
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      <umod:elem title="As" full_name="Arsenic" avge_mass="74.9215942" mono_mass="74.9215942"/>
      <umod:elem title="Cd" full_name="Cadmium" avge_mass="112.411" mono_mass="113.903357"/>
      <umod:elem title="Cr" full_name="Chromium" avge_mass="51.9961" mono_mass="51.9405098"/>
      <umod:elem title="Co" full_name="Cobalt" avge_mass="58.933195" mono_mass="58.9331976"/>
      <umod:elem title="Mn" full_name="Manganese" avge_mass="54.938045" mono_mass="54.9380471"/>
      <umod:elem title="Mg" full_name="Magnesium" avge_mass="24.305" mono_mass="23.9850423"/>
      <umod:elem title="Pd" full_name="Palladium" avge_mass="106.42" mono_mass="105.903478"/>
   </umod:elements>
   <umod:modifications>
      <umod:mod title="Acetyl" full_name="Acetylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="1"
                record_id="1">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Multiple"
                           spec_group="2">
            <umod:misc_notes>GIST acetyl light</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Multiple"
                           spec_group="1">
            <umod:misc_notes>PT and GIST acetyl light</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="7">
            <umod:misc_notes>O-acetyl</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="8"/>
         <umod:delta mono_mass="42.010565" avge_mass="42.0367" composition="H(2) C(2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>14730666</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15350136</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0055</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource acetylation tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/acetylation/acetylation.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Chemical Reagents for Protein Modification 3rd edition, pp 215-221, Roger L. Lundblad, CRC Press, New York, N.Y., 2005</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0043</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0044</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0354</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0045</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0056</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0046</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0051</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0052</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0364</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0041</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0049</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0048</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0047</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0042</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0050</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0053</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0054</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ACET</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PNAS 2006 103: 18574-18579</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1073/pnas.0608995103</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Amidated" full_name="Amidation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2010-06-28 10:52:25"
                approved="1"
                record_id="2">
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2">
            <umod:misc_notes>MS/MS experiments of mass spectrometric c-ions (MS^3) can be used for protein identification by library searching. T3-sequencing is such a technique (see reference). Search engines must recognize this as a virtual modification.</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.984016" avge_mass="-0.9848" composition="H N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:alt_name>Top-Down sequencing c-type fragment ion</umod:alt_name>
         <umod:xref>
            <umod:text>AA0088</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0087</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0086</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0085</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0084</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0083</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0082</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0081</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0089</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0090</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0091</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0092</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0093</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0094</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0095</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0096</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0097</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0098</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0099</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0100</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AMID</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14588022</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin" full_name="Biotinylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:27:08"
                approved="1"
                record_id="3">
         <umod:specificity hidden="0" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="226.077598" avge_mass="226.2954"
                     composition="H(14) C(10) N(2) O(2) S">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0117</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BIOT</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carbamidomethyl" full_name="Iodoacetamide derivative"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-21 13:05:07"
                approved="1"
                record_id="4">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Artefact"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Artefact"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="9"/>
         <umod:delta mono_mass="57.021464" avge_mass="57.0513" composition="H(3) C(2) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Carboxyamidomethylation</umod:alt_name>
         <umod:xref>
            <umod:text>Creasy, D. M., Cottrell, J. S., Proteomics 2 1426-34 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11510821</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Boja, E. S., Fales, H. M., Anal. Chem. 73 3576-82 (2001)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12422359</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carbamyl" full_name="Carbamylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-21 13:06:47"
                approved="0"
                record_id="5">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Multiple"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="9"/>
         <umod:delta mono_mass="43.005814" avge_mass="43.0247" composition="H C N O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12203680</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Stark; Modification of proteins with cyanate. Meth Enz 25B, 579-584 (1972)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0343</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10978403</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0332</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Smyth; Carbamylation of amino and tyrosine hydroxyl groups. J Biol Chem 242, 1579-1591 (1967)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource carbamylation tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/carbam/carbam.htm</umod:url>
         </umod:xref>
         <umod:misc_notes>Carbamylation is an irreversible process of non-enzymatic modification of proteins by the breakdown products of urea isocyanic acid reacts with the N-term of a proteine or side chains of lysine and arginine residues</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Carboxymethyl" full_name="Iodoacetic acid derivative"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 10:21:50"
                approved="1"
                record_id="6">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="4">
            <umod:misc_notes>Hydroxylethanone</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="58.005479" avge_mass="58.0361" composition="H(2) C(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Carboxymethylation</umod:alt_name>
      </umod:mod>
      <umod:mod title="Deamidated" full_name="Deamidation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-05-12 08:53:06"
                approved="0"
                record_id="7">
         <umod:specificity hidden="0" site="Q" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>Protein which is post-translationally modified by the de-imination of one or more arginine residues; Peptidylarginine deiminase (PAD) converts protein bound to citrulline</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>Convertion of glycosylated asparagine residues upon deglycosylation with PNGase F in H2O</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="F" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="3"/>
         <umod:delta mono_mass="0.984016" avge_mass="0.9848" composition="H(-1) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>phenyllactyl from N-term Phe</umod:alt_name>
         <umod:alt_name>Citrullination</umod:alt_name>
         <umod:xref>
            <umod:text>FLAC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0128</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CITR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource tutorial</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/Deamidation/deamidation.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0214</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>6838602</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15700232</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DEAM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-G" full_name="Gygi ICAT(TM) d0" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:00:43"
                approved="1"
                record_id="8">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="486.251206" avge_mass="486.6253"
                     composition="H(38) C(22) N(4) O(6) S">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10504701</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gygi S.P., et. al. Nat Biotechnol. 1999 Oct;17(10):994-9</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-G:2H(8)" full_name="Gygi ICAT(TM) d8" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:01:35"
                approved="1"
                record_id="9">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="494.301420" avge_mass="494.6746"
                     composition="H(30) 2H(8) C(22) N(4) O(6) S">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10504701</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gygi S.P., et. al. Nat Biotechnol. 1999 Oct;17(10):994-9</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Met-&gt;Hse" full_name="Homoserine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-13 15:40:08"
                approved="1"
                record_id="10">
         <umod:specificity hidden="0" site="M" position="Any C-term" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.992806" avge_mass="-30.0922" composition="H(-2) C(-1) O S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:misc_notes>Cyanogen bromide (CNBr) cleavage converts the C-term Met to either homoserine or homoserine lactone, depending on pH.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Met-&gt;Hsl" full_name="Homoserine lactone" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:10:15"
                approved="0"
                record_id="11">
         <umod:specificity hidden="0" site="M" position="Any C-term" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-48.003371" avge_mass="-48.1075" composition="H(-4) C(-1) S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Donald Voet, Judith G. Voet (1995): Biochemistry; p 115</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cyanogen bromide (CNBr) cleavage converts the C-term Met to either homoserine or homoserine lactone, depending on pH.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ICAT-D:2H(8)" full_name="Applied Biosystems original ICAT(TM) d8"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:56:23"
                approved="1"
                record_id="12">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="450.275205" avge_mass="450.6221"
                     composition="H(26) 2H(8) C(20) N(4) O(5) S">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:Ignore mono_mass="227.085423" avge_mass="227.3033"
                      composition="H(15) C(10) N(2) O(2) S ">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="288.16838" avge_mass="288.4223"
                      composition="H(18) 2H(4) C(13) N(3) O(2) S ">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="332.194594" avge_mass="332.4749"
                      composition="H(22) 2H(4) C(15) N(3) O(3) S ">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="411.288115" avge_mass="411.6092"
                      composition="H(27) 2H(8) C(18) N(4) O(4) S ">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="485.270751" avge_mass="485.7109"
                      composition="H(29) 2H(8) C(20) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="509.270751" avge_mass="509.7323"
                      composition="H(29) 2H(8) C(22) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="2H" number="8"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/images/icat_reagent.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Molecular &amp; Cellular Proteomics 2:428-442, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.mcponline.org/cgi/content/full/2/7/428</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-D" full_name="Applied Biosystems original ICAT(TM) d0"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:53:48"
                approved="1"
                record_id="13">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="442.224991" avge_mass="442.5728"
                     composition="H(34) C(20) N(4) O(5) S">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:Ignore mono_mass="227.085423" avge_mass="227.3033"
                      composition="H(15) C(10) N(2) O(2) S ">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="284.143273" avge_mass="284.3977"
                      composition="H(22) C(13) N(3) O(2) S ">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="328.169488" avge_mass="328.4502"
                      composition="H(26) C(15) N(3) O(3) S ">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="403.237901" avge_mass="403.5599"
                      composition="H(35) C(18) N(4) O(4) S ">
            <umod:element symbol="H" number="35"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="477.220537" avge_mass="477.6616"
                      composition="H(37) C(20) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:Ignore mono_mass="501.220537" avge_mass="501.683"
                      composition="H(37) C(22) N(4) O(5) S(2) ">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
         </umod:Ignore>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/images/icat_reagent.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Molecular &amp; Cellular Proteomics 2:428-442, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.mcponline.org/cgi/content/full/2/7/428</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NIPCAM" full_name="N-isopropylcarboxamidomethyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:39:14"
                approved="1"
                record_id="17">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="99.068414" avge_mass="99.1311" composition="H(9) C(5) N O">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Dimethylacrylamide, DMA</umod:alt_name>
         <umod:xref>
            <umod:text>Krutzsch and Inman, Analytical Biochemistry, 209, 109-116, (1993)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Galvani et.al. (2000) Electrophoresis vol 22 p2046-p2074</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8465942</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11465505</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PEO-Iodoacetyl-LC-Biotin"
                full_name="Biotinyl-iodoacetamidyl-3,6-dioxaoctanediamine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:40:00"
                approved="0"
                record_id="20">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="414.193691" avge_mass="414.5196"
                     composition="H(30) C(18) N(4) O(5) S">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Pierce EZ-Link PEO-Iodoacetyl Biotin</umod:alt_name>
         <umod:xref>
            <umod:text>12038753</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 278, Issue 7, 4500-4509, February 14, 2003</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.jbc.org/cgi/content/full/278/7/4500#F1</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>15253424</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phospho" full_name="Phosphorylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-25 10:55:54"
                approved="1"
                record_id="21">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="3">
            <umod:misc_notes>Rare</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>Usually don't see beta elimination of phosphate</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="97.976896" avge_mass="97.9952" flag="false"
                              composition="H(3) O(4) P">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="4"/>
               <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
         </umod:specificity>
         <umod:specificity hidden="0" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="97.976896" avge_mass="97.9952" flag="false"
                              composition="H(3) O(4) P">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="4"/>
               <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="7">
            <umod:misc_notes>from ProteinPilot</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="79.966331" avge_mass="79.9799" composition="H O(3) P">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PHOS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0034</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0222</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0039</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0038</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0033</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0037</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>IonSource</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ionsource.com/Card/phos/phos.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0036</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0035</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which is posttranslationally modified by the attachment of at least one phosphate group usually on serine, threonine or tyrosine residues, but also on aspartic acid or histidine residues.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dehydrated" full_name="Dehydration" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:05:47"
                approved="0"
                record_id="23">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="3">
            <umod:misc_notes>beta-elimination</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="Q" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C" position="Any N-term" classification="Artefact"
                           spec_group="7">
            <umod:misc_notes>Pyro-carboxymethyl as a delta from Carboxymethyl-Cys</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-18.010565" avge_mass="-18.0153" composition="H(-2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:alt_name>didehydroalanine</umod:alt_name>
         <umod:alt_name>C-terminal imide</umod:alt_name>
         <umod:alt_name>Prompt loss of phosphate from phosphorylated residue</umod:alt_name>
         <umod:alt_name>D-Succinimide</umod:alt_name>
         <umod:xref>
            <umod:text>DHAS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0303</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0302</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0181</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0182</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DHB</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propionamide" full_name="Acrylamide adduct" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2010-12-21 16:57:03"
                approved="1"
                record_id="24">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="71.037114" avge_mass="71.0779" composition="H(5) C(3) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>C.-H. Feng, C.-Y. Lu, Analytica Chimica Acta 684 (2011) 80–86</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1016/j.aca.2010.10.042</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Pyridylacetyl" full_name="pyridylacetyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:47:43"
                approved="1"
                record_id="25">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="119.037114" avge_mass="119.1207" composition="H(5) C(7) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9276974</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Pyro-carbamidomethyl"
                full_name="S-carbamoylmethylcysteine cyclization (N-terminus)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-11-14 11:05:25"
                approved="0"
                record_id="26">
         <umod:specificity hidden="0" site="C" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="39.994915" avge_mass="40.0208" composition="C(2) O">
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Carboxymethyl-Cys cyclization (N-terminus)</umod:alt_name>
         <umod:alt_name>Carbamidomethyl-Cys cyclization (N-terminus)</umod:alt_name>
         <umod:xref>
            <umod:text>12643538</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Proteome Res. 1, 181-187 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cyclisation of N-term Carbamidomethyl-Cys or Carboxymethyl-Cys. The delta is relative to Cys. For a delta relative to alkylated Cys, see Ammonia-loss and Dehydrated.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glu-&gt;pyro-Glu" full_name="Pyro-glu from E" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-06-05 13:54:56"
                approved="1"
                record_id="27">
         <umod:specificity hidden="0" site="E" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-18.010565" avge_mass="-18.0153" composition="H(-2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0031</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Miller et.al. Arch. Biochem. Biophy. (1993) 301, 41-52.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8442665</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRE</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Gln-&gt;pyro-Glu" full_name="Pyro-glu from Q" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-13 17:06:57"
                approved="1"
                record_id="28">
         <umod:specificity hidden="0" site="Q" position="Any N-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-17.026549" avge_mass="-17.0305" composition="H(-3) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0031</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SMA" full_name="N-Succinimidyl-2-morpholine acetate"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2010-11-03 17:44:14"
                approved="1"
                record_id="29">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="127.063329" avge_mass="127.1412" composition="H(9) C(6) N O(2)">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10446193</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Sherman, N. E., Yates, N. A., Shabanowitz, J., Hunt, D. F., Jeffery, W. A., Bartlet-Jones, M., and Pappin, D. J. C. (1995) Proceedings of the 43rd ASMS Conference on Mass Spectrometry and Allied Topics, May 21-26, 1995, Atlanta, GA</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cation:Na" full_name="Sodium adduct" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-14 19:43:17"
                approved="1"
                record_id="30">
         <umod:specificity hidden="0" site="D" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="E" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="21.981943" avge_mass="21.9818" composition="H(-1) Na">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Na" number="1"/>
         </umod:delta>
         <umod:misc_notes>Proton replaced by sodium cation</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Pyridylethyl" full_name="S-pyridylethylation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 12:43:38"
                approved="1"
                record_id="31">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="105.057849" avge_mass="105.1372" composition="H(7) C(7) N">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11760118</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl" full_name="Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-14 10:32:35"
                approved="1"
                record_id="34">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="14"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="13"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="10"/>
         <umod:specificity hidden="0" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="12"/>
         <umod:specificity hidden="0" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="12"/>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Multiple"
                           spec_group="11"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Post-translational"
                           spec_group="9"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="Post-translational"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
         <umod:alt_name>methyl ester</umod:alt_name>
         <umod:xref>
            <umod:text>METH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0318</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0338</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0064</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0061</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0063</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0065</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0069</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0336</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0305</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0272</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0076</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0071</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0070</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0073</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0234</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0273</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0317</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0337</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0299</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0072</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11875433</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0105</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Oxidation" full_name="Oxidation or Hydroxylation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:37:07"
                approved="0"
                record_id="35">
         <umod:specificity hidden="0" site="W" position="Anywhere" classification="Artefact"
                           spec_group="10"/>
         <umod:specificity hidden="0" site="H" position="Anywhere" classification="Artefact"
                           spec_group="10"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="9">
            <umod:misc_notes>Cysteine sulfenic acid</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="M" position="Anywhere" classification="Artefact"
                           spec_group="8">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="63.998285" avge_mass="64.1069" flag="false" composition="H(4) C O S">
               <umod:element symbol="H" number="4"/>
               <umod:element symbol="C" number="1"/>
               <umod:element symbol="O" number="1"/>
               <umod:element symbol="S" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Proline oxidation to glutamic semialdehyde</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="G" position="Any C-term" classification="Pre-translational"
                           spec_group="11">
            <umod:misc_notes>Hydroxyglycine derivative in amidation pathway</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="15.994915" avge_mass="15.9994" composition="O">
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>HYDR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0322</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11212008</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11120890</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DOPA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CSEA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14661084</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0026</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15569593</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0205</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0215</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Lagerwerf FM, van de Weert M, Heerma W, Haverkamp J, Rapid Commun Mass Spectrom. 1996;10(15):1905-10</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0029</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0030</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9004526</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0028</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11461766</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0027</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0235</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0146</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14661085</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12781462</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>2057999</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dimethyl" full_name="di-Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-18 14:35:31"
                approved="1"
                record_id="36">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="P" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>DIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0311</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0068</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14570711</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0067</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12964758</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0075</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0066</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Trimethyl" full_name="tri-Methylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-02-03 10:02:45"
                approved="1"
                record_id="37">
         <umod:specificity hidden="1" site="A" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="59.073499" avge_mass="59.1103" flag="false"
                              composition="H(9) C(3) N">
               <umod:element symbol="H" number="9"/>
               <umod:element symbol="C" number="3"/>
               <umod:element symbol="N" number="1"/>
            </umod:NeutralLoss>
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
         </umod:specificity>
         <umod:delta mono_mass="42.046950" avge_mass="42.0797" composition="H(6) C(3)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Zhang, K. et al. 2004. Differentiation between

peptides containing acetylated or tri-methylated

lysines by mass spectrometry: an application

for determining lysine 9 acetylation

and methylation of histone H3. Proteomics

4:1-10.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TRIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Explanation of why RESID gives the delta as 43 Da</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.ebi.ac.uk/RESID/faq.html#q12</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Hirota et. al., Rapid Commun. Mass Spectrom., 17 371-6 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0062</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12590383</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0074</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Role of arginine and its methylated derivatives in cancer biology and treatment</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.cancerci.com/content/1/1/3</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methylthio" full_name="Beta-methylthiolation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-24 16:48:21"
                approved="0"
                record_id="39">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Multiple"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="4"/>
         <umod:delta mono_mass="45.987721" avge_mass="46.0916" composition="H(2) C S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Methyl methanethiosulfonate</umod:alt_name>
         <umod:alt_name>MMTS</umod:alt_name>
         <umod:xref>
            <umod:text>J. A. Kowalak and K. A. Walsh, Protein Science (1996) 5: 1625-1632</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0320</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8844851</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TRC data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.trc-canada.com/white_papers.lasso</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0232</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Applied Biosystems iTRAQ(TM) Reagents Chemistry Reference Guide Part Number 4351918 Rev. A</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04351918.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0101</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BMTH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Sulfo" full_name="O-Sulfonation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2012-02-14 17:50:32"
                approved="1"
                record_id="40">
         <umod:specificity hidden="0" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="79.956815" avge_mass="80.0632" flag="false" composition="O(3) S">
               <umod:element symbol="O" number="3"/>
               <umod:element symbol="S" number="1"/>
            </umod:NeutralLoss>
            <umod:misc_notes>Because the modification is quantitatively lost on CID, site assigment is not possible when there is a choice of sites</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="79.956815" avge_mass="80.0632" flag="false" composition="O(3) S">
               <umod:element symbol="O" number="3"/>
               <umod:element symbol="S" number="1"/>
            </umod:NeutralLoss>
            <umod:misc_notes>Because the modification is quantitatively lost on CID, site assigment is not possible when there is a choice of sites</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="79.956815" avge_mass="80.0632" flag="false" composition="O(3) S">
               <umod:element symbol="O" number="3"/>
               <umod:element symbol="S" number="1"/>
            </umod:NeutralLoss>
            <umod:misc_notes>Because the modification is quantitatively lost on CID, site assigment is not possible when there is a choice of sites</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>Sulfitolysis</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="79.956815" avge_mass="80.0632" composition="O(3) S">
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0172</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14752058</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0362</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Medzihradszky et al., Mol. Cell. Proteomics 2004, 3, 429-440</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>SULF</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0171</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0361</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex" full_name="Hexose" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-21 13:57:35"
                approved="1"
                record_id="41">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Other glycosylation"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other glycosylation"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other glycosylation"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Other glycosylation"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other glycosylation"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Other glycosylation"
                           spec_group="3">
            <umod:misc_notes>glycation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other glycosylation"
                           spec_group="1">
            <umod:misc_notes>glycation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="9"/>
         <umod:delta mono_mass="162.052824" avge_mass="162.1406" composition="Hex">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:alt_name>Galactose</umod:alt_name>
         <umod:alt_name>Glucose</umod:alt_name>
         <umod:alt_name>Fructose</umod:alt_name>
         <umod:alt_name>Mannose</umod:alt_name>
         <umod:xref>
            <umod:text>CMAN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0217</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0327</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0157</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0152</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15279557</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GLUC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lipoyl" full_name="Lipoyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:06:53"
                approved="1"
                record_id="42">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="188.032956" avge_mass="188.3103" composition="H(12) C(8) O S(2)">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PDOC00168</umod:text>
            <umod:source>Prosite</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0118</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>LIPY</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3522581</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This group is normally a substituent on N6 of a lysine residue of an enzyme or other protein</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HexNAc" full_name="N-Acetylhexosamine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2014-04-04 10:41:33"
                approved="1"
                record_id="43">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other glycosylation"
                           spec_group="3">
            <umod:NeutralLoss mono_mass="203.079373" avge_mass="203.1925" flag="false" composition="HexNAc">
               <umod:element symbol="H" number="13"/>
               <umod:element symbol="C" number="8"/>
               <umod:element symbol="N" number="1"/>
               <umod:element symbol="O" number="5"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other glycosylation"
                           spec_group="2">
            <umod:NeutralLoss mono_mass="203.079373" avge_mass="203.1925" flag="false" composition="HexNAc">
               <umod:element symbol="H" number="13"/>
               <umod:element symbol="C" number="8"/>
               <umod:element symbol="N" number="1"/>
               <umod:element symbol="O" number="5"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="203.079373" avge_mass="203.1925" composition="HexNAc">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0155</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3086323</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0154</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0151</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GLCN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The amine derivative of a hexose formed by replacing a hydroxyl group with an amino group.(+acetyl group)</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Farnesyl" full_name="Farnesylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:11:38"
                approved="1"
                record_id="44">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="204.187801" avge_mass="204.3511" composition="H(24) C(15)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="15"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15609361</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0102</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FARN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Myristoyl" full_name="Myristoylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:13:17"
                approved="1"
                record_id="45">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="G" position="Any N-term" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="210.198366" avge_mass="210.3556" composition="H(26) C(14) O">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PDOC00008</umod:text>
            <umod:source>Prosite</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0059</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0307</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0078</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>MYRI</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PyridoxalPhosphate" full_name="Pyridoxal phosphate"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:35:42"
                approved="1"
                record_id="46">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="229.014009" avge_mass="229.1266" composition="H(8) C(8) N O(5) P">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochemistry; D.Voet and J.G.Voet WILEY(p728)</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0119</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PLP</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The co-enzyme derivative of vitamin B6. Forms Schiff\'s bases of substrate amino acids during catalysis of transamination, decarboxylation and racemisation reactions.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Palmitoyl" full_name="Palmitoylation" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:38:43"
                approved="1"
                record_id="47">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:delta mono_mass="238.229666" avge_mass="238.4088" composition="H(30) C(16) O">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0080</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0079</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0106</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0077</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PALM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0339</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0060</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Palmitoylation is a post-translational modification that consists in the addition of a 16 carbons fatty acid, palmitate, to a cysteine residue through the creation of a thioester link.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="GeranylGeranyl" full_name="Geranyl-geranyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 15:47:48"
                approved="1"
                record_id="48">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="272.250401" avge_mass="272.4681" composition="H(32) C(20)">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="20"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0104</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15609361</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GERA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phosphopantetheine" full_name="Phosphopantetheine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 16:00:24"
                approved="1"
                record_id="49">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="340.085794" avge_mass="340.3330"
                     composition="H(21) C(11) N(2) O(6) P S">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0150</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PPAN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which contains at least one phosphopantetheine as the prosthetic group. In acyl carrier proteins (ACP) for example, it serves as a \'swinging arm\' for the attachment of activated fatty acid and amino-acid groups.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="FAD" full_name="Flavin adenine dinucleotide" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-16 17:16:18"
                approved="1"
                record_id="50">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="783.141486" avge_mass="783.5339"
                     composition="H(31) C(27) N(9) O(15) P(2)">
            <umod:element symbol="H" number="31"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="9"/>
            <umod:element symbol="O" number="15"/>
            <umod:element symbol="P" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0143</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.aw-bc.com/mathews/EF/FAD.GIF</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0144</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0145</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0221</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FAD</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Tripalmitate" full_name="N-acyl diglyceride cysteine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2006-10-18 11:47:54"
                approved="1"
                record_id="51">
         <umod:specificity hidden="1" site="C" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="788.725777" avge_mass="789.3049" composition="H(96) C(51) O(5)">
            <umod:element symbol="H" number="96"/>
            <umod:element symbol="C" number="51"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10356335</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Guanidinyl" full_name="Guanidination" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2011-11-21 13:56:40"
                approved="1"
                record_id="52">
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="42.021798" avge_mass="42.0400" composition="H(2) C N(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>homoarginine</umod:alt_name>
         <umod:xref>
            <umod:text>11821862</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ASMS 2001 abstract</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.indiana.edu/~reillyjp/ASMS2001posters/beardsley_poster.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>11078590</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11085420</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Anal. Biochem. 287, p110-117, 2000</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Specific for sidechain of lysine. Does not modify the N-termini except for glycine at a slower rate than the side chain of lysine.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HNE" full_name="4-hydroxynonenal (HNE)" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2012-03-09 11:21:00"
                approved="1"
                record_id="53">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>GFAP from human brain tissues</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>GFAP from human brain tissues</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="156.115030" avge_mass="156.2221" composition="H(16) C(9) O(2)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11327326</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Poli G, Schaur RJ., IUBMB Life 2000 Oct-Nov;50(4-5):315-21</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>A lipid-type modification. HNE forms a Michael addition product on Cysteine, Histidine and Lysines. Unusually, it doesn\'t replace a hydrogen on the amino acid side chain.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glucuronyl" full_name="N-glucuronylation" username_of_poster="jcottrell"
                group_of_poster="users"
                date_time_posted="2002-10-01 21:36:48"
                date_time_modified="2006-10-16 17:26:21"
                approved="1"
                record_id="54">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="176.032088" avge_mass="176.1241" composition="H(8) C(6) O(6)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:alt_name>glucuronosyl</umod:alt_name>
         <umod:xref>
            <umod:text>AA0291</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0058</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Lin, T.S. Kolattukudy, P.E., Eur. J. Biochem. 106, 341-351, 1980</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>7398618</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The addition of a sugar unit to a protein amino acid, e.g. the addition of glycan chains to proteins. Addition of glucuronic acid. Observed for N-term G</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Glutathione" full_name="glutathione disulfide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2002-10-03 09:10:19"
                date_time_modified="2006-10-16 15:51:52"
                approved="1"
                record_id="55">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="305.068156" avge_mass="305.3076"
                     composition="H(15) C(10) N(3) O(6) S">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>3083866</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8344916</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0229</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GLUT</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Acetyl:2H(3)"
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            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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         <umod:xref>
            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
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         <umod:xref>
            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
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         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
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         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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            <umod:source>Journal</umod:source>
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            <umod:text>Global internal standard technology for comparative proteomics.     Chakraborty, Asish; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Journal of Chromatography, A  (2002),  949(1-2),  173-184.</umod:text>
            <umod:source>Journal</umod:source>
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11999733</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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      <umod:mod title="GIST-Quat"
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            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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      <umod:mod title="GIST-Quat:2H(3)"
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            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
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            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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      <umod:mod title="Succinyl"
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0130</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
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            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
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            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
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         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
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         <umod:delta mono_mass="104.029463" avge_mass="104.0434" composition="H(4) 13C(4) O(3)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Controlling Deuterium isotope effects in comparative proteomics.     Zhang, Roujian; Sioma, Cathy S.; Thompson, Robert A.; Xiong, Li; Regnier, Fred E..    Department of Chemistry,  Purdue University,  West Lafayette,  IN,  USA.    Analytical Chemistry  (2</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Comparative proteomics based on stable isotope labeling and affinity selection.     Regnier, Fred E.; Riggs, Larry; Zhang, Roujian; Xiong, Li; Liu, Peiran; Chakraborty, Asish; Seeley, Erin; Sioma, Cathy; Thompson, Robert A.    Department of Chemistry,  Pu</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11857757</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12175151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="probiotinhydrazide"
                full_name="oxidized proline biotinylated with biotin hydrazide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:56:20"
                date_time_modified="2006-11-14 12:12:19"
                approved="0"
                record_id="357">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="258.115047" avge_mass="258.3405"
                     composition="H(18) C(10) N(4) O(2) S">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15174056</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Yoo, Byoung-Sam; Regnier, Fred E. Electrophoresis (2004), 25(9), 1334-1341</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Pro-&gt;pyro-Glu" full_name="proline oxidation to pyroglutamic acid"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:58:42"
                date_time_modified="2006-10-14 10:03:34"
                approved="1"
                record_id="359">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="13.979265" avge_mass="13.9835" composition="H(-2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10717661</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="His-&gt;Asn" full_name="His-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:43:27"
                date_time_modified="2011-06-23 12:00:22"
                approved="1"
                record_id="348">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1">
            <umod:misc_notes>Could also be classed as chemical derivative</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-23.015984" avge_mass="-23.0366" composition="H(-1) C(-2) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>histidine oxidation to aspargine</umod:alt_name>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="His-&gt;Asp" full_name="His-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:44:32"
                date_time_modified="2011-06-23 12:00:45"
                approved="1"
                record_id="349">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1">
            <umod:misc_notes>Could also be classed as chemical derivative</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-22.031969" avge_mass="-22.0519"
                     composition="H(-2) C(-2) N(-2) O(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>histidine oxidation to aspartic acid</umod:alt_name>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Trp-&gt;Hydroxykynurenin"
                full_name="tryptophan oxidation to hydroxykynurenin"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:47:20"
                date_time_modified="2006-11-14 17:40:45"
                approved="1"
                record_id="350">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="19.989829" avge_mass="19.9881" composition="C(-1) O(2)">
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Degradation of the amino acids Isoleucine, Leucine and Tryptophan</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.lbqp.unb.br/bioq/htm/aulas2D/deg_aa_ile_leu_trp.htm?reload_coolmenus</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(4)C(3)" full_name="Propionaldehyde +40"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-08-12 20:04:01"
                date_time_modified="2010-02-25 10:49:55"
                approved="1"
                record_id="256">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term" classification="Other"
                           spec_group="3"/>
         <umod:delta mono_mass="40.031300" avge_mass="40.0639" composition="H(4) C(3)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Delta:H(4)C(2)" full_name="Acetaldehyde +28" username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-08-12 20:02:38"
                date_time_modified="2011-11-21 13:14:58"
                approved="1"
                record_id="255">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Other"
                           spec_group="3"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:misc_notes>Reduction of Schiff base formed between K amino group and acetaldehyde</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Cys-&gt;Dha" full_name="Dehydroalanine (from Cysteine)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-02 17:31:11"
                date_time_modified="2006-10-13 15:27:46"
                approved="1"
                record_id="368">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-33.987721" avge_mass="-34.0809" composition="H(-2) S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11212008</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Arg-&gt;GluSA" full_name="Arginine oxidation to glutamic semialdehyde"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:38:24"
                date_time_modified="2006-11-16 15:25:28"
                approved="1"
                record_id="344">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-43.053433" avge_mass="-43.0711" composition="H(-5) C(-1) N(-3) O">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Arginine oxidation to gamma-glutamyl semialdehyde</umod:alt_name>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Jesus Requena, Chien-Chung Chao, Rodney L. Levine, and Earl R. Stadtman, Glutamic and aminoadipic semialdehydes are the main carbonyl products of metal-catalyzed oxidation of proteins, PNAS 98 69-74 (2001)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.pnas.org/cgi/content/full/98/1/69</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>1680314</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Trioxidation" full_name="cysteine oxidation to cysteic acid"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:39:38"
                date_time_modified="2011-11-25 11:17:41"
                approved="1"
                record_id="345">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="47.984744" avge_mass="47.9982" composition="O(3)">
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14678012</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Iminobiotin" full_name="Iminobiotinylation"
                username_of_poster="toppolzer"
                group_of_poster="users"
                date_time_posted="2002-11-25 16:01:48"
                date_time_modified="2006-10-16 15:26:37"
                approved="1"
                record_id="89">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="225.093583" avge_mass="225.3106" composition="H(15) C(10) N(3) O S">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9750125</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ESP" full_name="ESP-Tag light d0" username_of_poster="toppolzer"
                group_of_poster="users"
                date_time_posted="2002-11-25 16:12:50"
                date_time_modified="2006-10-16 15:58:19"
                approved="1"
                record_id="90">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="338.177647" avge_mass="338.4682"
                     composition="H(26) C(16) N(4) O(2) S">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Poster abstract P-48</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.wzw.tum.de/proteomik/forum2003/Posters-Abstracts.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ESP:2H(10)" full_name="ESP-Tag heavy d10" username_of_poster="toppolzer"
                group_of_poster="users"
                date_time_posted="2002-11-25 16:18:58"
                date_time_modified="2006-10-16 16:03:06"
                approved="1"
                record_id="91">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="348.240414" avge_mass="348.5299"
                     composition="H(16) 2H(10) C(16) N(4) O(2) S">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="2H" number="10"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Poster abstract P-48</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.wzw.tum.de/proteomik/forum2003/Posters-Abstracts.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NHS-LC-Biotin" full_name="NHS-LC-Biotin" username_of_poster="toppolzer"
                group_of_poster="users"
                date_time_posted="2002-12-04 09:55:19"
                date_time_modified="2006-11-14 11:14:57"
                approved="0"
                record_id="92">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="339.161662" avge_mass="339.4530"
                     composition="H(25) C(16) N(3) O(3) S">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Introduction to Protein Labeling</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>EZ-Link Sulfo-NHS-Biotin Reagents</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=8D38BA83-EFDC-421A-853F-E96EBA380612</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="EDT-maleimide-PEO-biotin" full_name="EDT-maleimide-PEO-biotin"
                username_of_poster="take"
                group_of_poster="users"
                date_time_posted="2002-12-27 09:08:56"
                date_time_modified="2006-11-14 11:15:06"
                approved="0"
                record_id="93">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="601.206246" avge_mass="601.8021"
                     composition="H(39) C(25) N(5) O(6) S(3)">
            <umod:element symbol="H" number="39"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>EZ-Link Maleimide PEOn-Biotin (n = 2 and 11)</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=01031005</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="IMID" full_name="IMID d0" username_of_poster="Liao"
                group_of_poster="users"
                date_time_posted="2003-01-09 04:14:06"
                date_time_modified="2006-10-16 10:33:45"
                approved="1"
                record_id="94">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="68.037448" avge_mass="68.0773" composition="H(4) C(3) N(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>2-methoxy-4,5-dihydro-1H-imidazole derivative</umod:alt_name>
         <umod:alt_name>Lys imidazole</umod:alt_name>
         <umod:xref>
            <umod:text>11746907</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Rapid Communications in Mass Spectrometry, Volume 15, Issue 24 , Pages 2387 - 2392</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/rcm.517</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Agilent Lys Tag 4H Reagent Kit</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chem.agilent.com/cag/lystag.asp</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Poster: Kelly Zhang, Gordon Nicol, Nina Zolotarjova, Cory Szafranski, Jerome Bailey, Liang-Sheng Yang, and Barry Boyes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chem.agilent.com/cag/other/IMTHUPO2003.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="IMID:2H(4)" full_name="IMID d4" username_of_poster="Liao"
                group_of_poster="users"
                date_time_posted="2003-01-09 04:15:25"
                date_time_modified="2006-10-16 11:06:13"
                approved="1"
                record_id="95">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="72.062555" avge_mass="72.1019" composition="2H(4) C(3) N(2)">
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>2-methoxy-4,5-dihydro-1H-imidazole derivative</umod:alt_name>
         <umod:xref>
            <umod:text>Rapid Communications in Mass Spectrometry, Volume 15, Issue 24 , Pages 2387 - 2392</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/rcm.517</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Agilent Lys Tag 4H Reagent Kit</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chem.agilent.com/cag/lystag.asp</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>11746907</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Poster: Kelly Zhang, Gordon Nicol, Nina Zolotarjova, Cory Szafranski, Jerome Bailey, Liang-Sheng Yang, and Barry Boyes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chem.agilent.com/cag/other/IMTHUPO2003.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lysbiotinhydrazide"
                full_name="oxidized Lysine biotinylated with biotin hydrazide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:51:13"
                date_time_modified="2006-11-14 12:12:01"
                approved="0"
                record_id="353">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="241.088497" avge_mass="241.3100"
                     composition="H(15) C(10) N(3) O(2) S">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Yoo, Byoung-Sam; Regnier, Fred E. Electrophoresis (2004), 25(9), 1334-1341</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propionamide:2H(3)" full_name="Acrylamide d3" username_of_poster="Liao"
                group_of_poster="users"
                date_time_posted="2003-01-14 08:10:30"
                date_time_modified="2006-10-16 11:07:07"
                approved="1"
                record_id="97">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="74.055944" avge_mass="74.0964" composition="H(2) 2H(3) C(3) N O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Nitro" full_name="Oxidation to nitro" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:52:38"
                date_time_modified="2006-10-16 10:02:15"
                approved="1"
                record_id="354">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="44.985078" avge_mass="44.9976" composition="H(-1) N O(2)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>8839040</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-C" full_name="Applied Biosystems cleavable ICAT(TM) light"
                username_of_poster="tpjd2"
                group_of_poster="users"
                date_time_posted="2003-01-27 10:27:11"
                date_time_modified="2006-10-16 15:32:17"
                approved="1"
                record_id="105">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="227.126991" avge_mass="227.2603" composition="H(17) C(10) N(3) O(3)">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>ICAT page from the Royal Society of Chemistry</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/icat.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Applied Biosystems product page</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>https://products.appliedbiosystems.com/ab/en/US/adirect/ab?cmd=catNavigate2&amp;catID=600902</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Cleavable ICAT Reagent Kit for Protein Labeling</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04333373.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(2)C(2)" full_name="Acetaldehyde +26" username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-08-12 20:01:03"
                date_time_modified="2011-11-21 13:14:17"
                approved="1"
                record_id="254">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term" classification="Other"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Other"
                           spec_group="4"/>
         <umod:delta mono_mass="26.015650" avge_mass="26.0373" composition="H(2) C(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>7744761</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Lys modification is formation of Schiff base.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Trp-&gt;Kynurenin" full_name="tryptophan oxidation to kynurenin"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:48:33"
                date_time_modified="2006-10-14 09:39:53"
                approved="1"
                record_id="351">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="3.994915" avge_mass="3.9887" composition="C(-1) O">
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lys-&gt;Allysine" full_name="Lysine oxidation to aminoadipic semialdehyde"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:49:59"
                date_time_modified="2006-10-13 18:27:28"
                approved="1"
                record_id="352">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.031634" avge_mass="-1.0311" composition="H(-3) N(-1) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0121</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ALLYS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11120890</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-C:13C(9)" full_name="Applied Biosystems cleavable ICAT(TM) heavy"
                username_of_poster="tpjd2"
                group_of_poster="users"
                date_time_posted="2003-01-27 10:32:53"
                date_time_modified="2006-10-16 15:34:14"
                approved="1"
                record_id="106">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="236.157185" avge_mass="236.1942"
                     composition="H(17) C 13C(9) N(3) O(3)">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="13C" number="9"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Cleavable ICAT Reagent Kit for Protein Labeling</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04333373.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Applied Biosystems product page</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>https://products.appliedbiosystems.com/ab/en/US/adirect/ab?cmd=catNavigate2&amp;catID=600902</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>ICAT page from the Royal Society of Chemistry</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemsoc.org/exemplarchem/entries/2002/proteomics/icat.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FormylMet" full_name="Addition of N-formyl met"
                username_of_poster="jphilip"
                group_of_poster="users"
                date_time_posted="2003-01-27 18:24:14"
                date_time_modified="2006-10-16 14:08:15"
                approved="1"
                record_id="107">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Pre-translational"
                           spec_group="1">
            <umod:misc_notes>only with Listeria monocytogenes (gram-positive bacteria)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="159.035399" avge_mass="159.2062" composition="H(9) C(6) N O(2) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0021</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10825024</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8758896</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Nethylmaleimide" full_name="N-ethylmaleimide on cysteines"
                username_of_poster="Pflieger"
                group_of_poster="users"
                date_time_posted="2003-01-30 09:52:51"
                date_time_modified="2006-10-16 13:36:10"
                approved="1"
                record_id="108">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="125.047679" avge_mass="125.1253" composition="H(7) C(6) N O(2)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>CysNEM</umod:alt_name>
         <umod:xref>
            <umod:text>reaction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemistry.ucsc.edu/~fink/231/Image118.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12777388</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11813307</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="OxLysBiotinRed"
                full_name="Oxidized lysine biotinylated with biotin-LC-hydrazide, reduced"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 00:53:43"
                date_time_modified="2006-11-14 12:10:49"
                approved="0"
                record_id="112">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="354.172562" avge_mass="354.4676"
                     composition="H(26) C(16) N(4) O(3) S">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="IBTP" full_name="Thio Ether Formation - BTP Adduct"
                username_of_poster="MRCDunn"
                group_of_poster="users"
                date_time_posted="2003-03-13 09:36:40"
                date_time_modified="2006-10-16 15:52:42"
                approved="1"
                record_id="119">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="316.138088" avge_mass="316.3759" composition="H(21) C(22) P">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Biol. Chem 2002 vol277 pp17048-17056</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11861642</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="OxLysBiotin"
                full_name="Oxidized lysine biotinylated with biotin-LC-hydrazide"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 01:25:11"
                date_time_modified="2006-11-14 12:10:53"
                approved="0"
                record_id="113">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="352.156911" avge_mass="352.4518"
                     composition="H(24) C(16) N(4) O(3) S">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="OxProBiotinRed"
                full_name="Oxidized proline biotinylated with biotin-LC-hydrazide, reduced"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 01:34:28"
                date_time_modified="2006-11-14 12:11:11"
                approved="0"
                record_id="114">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="371.199111" avge_mass="371.4982"
                     composition="H(29) C(16) N(5) O(3) S">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="OxProBiotin"
                full_name="Oxidized Proline biotinylated with biotin-LC-hydrazide"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 01:35:44"
                date_time_modified="2006-11-14 12:11:17"
                approved="0"
                record_id="115">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="369.183461" avge_mass="369.4823"
                     composition="H(27) C(16) N(5) O(3) S">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="OxArgBiotin"
                full_name="Oxidized arginine biotinylated with biotin-LC-hydrazide"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 01:41:19"
                date_time_modified="2011-07-18 11:34:02"
                approved="0"
                record_id="116">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="310.135113" avge_mass="310.4118"
                     composition="H(22) C(15) N(2) O(3) S">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce introduction to biotin</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Nitrogen metabolism</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://themedicalbiochemistrypage.org/nitrogen-metabolism.html</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="OxArgBiotinRed"
                full_name="Oxidized arginine biotinylated with biotin-LC-hydrazide, reduced"
                username_of_poster="S_Lee"
                group_of_poster="users"
                date_time_posted="2003-02-21 01:43:00"
                date_time_modified="2011-07-18 11:33:41"
                approved="0"
                record_id="117">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="312.150763" avge_mass="312.4277"
                     composition="H(24) C(15) N(2) O(3) S">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce introduction to biotin</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Nitrogen metabolism</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://themedicalbiochemistrypage.org/nitrogen-metabolism.html</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="EDT-iodoacetyl-PEO-biotin" full_name="EDT-iodo-PEO-biotin"
                username_of_poster="take"
                group_of_poster="users"
                date_time_posted="2003-02-24 07:18:42"
                date_time_modified="2006-10-16 17:01:15"
                approved="1"
                record_id="118">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="490.174218" avge_mass="490.7034"
                     composition="H(34) C(20) N(4) O(4) S(3)">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="GG" full_name="ubiquitinylation residue" username_of_poster="gielbert"
                group_of_poster="users"
                date_time_posted="2003-04-30 13:32:37"
                date_time_modified="2014-07-09 16:52:39"
                approved="1"
                record_id="121">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="114.042927" avge_mass="114.1026" composition="H(6) C(4) N(2) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>glycineglycine</umod:alt_name>
         <umod:xref>
            <umod:text>12872131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>The Ubiquitin System for Protein Modification and Degradation</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.nottingham.ac.uk/biochemcourses/students/ub/ubindex.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Wang et al., J Cell Biol. 2007 May 21;177(4):613-24</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/17502423</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Grou et al., J Biol Chem. 2008 Mar 22; Epub</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.jbc.org/cgi/content/abstract/M800402200v1</umod:url>
         </umod:xref>
         <umod:misc_notes>The two glycine residues left on ubiquitinylated lysine after tryptic digestion</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Formyl" full_name="Formylation" username_of_poster="pnacman"
                group_of_poster="users"
                date_time_posted="2003-05-01 13:28:36"
                date_time_modified="2006-11-14 12:01:57"
                approved="1"
                record_id="122">
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5">
            <umod:misc_notes>A protein in which either the N-terminal N-formylmethionine has not been processed by the methionyl-tRNA formyltransferase or which is posttranslationally modified by the attachment of at least one formyl group.</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Artefact"
                           spec_group="4">
            <umod:misc_notes>Can occur under CNBr cleavage conditions (70% HCOOH)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>Can occur under CNBr cleavage conditions (70% HCOOH)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="2">
            <umod:misc_notes>Can occur under CNBr cleavage conditions (70% HCOOH)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Artefact"
                           spec_group="3">
            <umod:misc_notes>Can occur under CNBr cleavage conditions (70% HCOOH)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="27.994915" avge_mass="28.0101" composition="C O">
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0211</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15799070</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0021</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FORM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0384</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0057</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0384</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-H" full_name="N-iodoacetyl, p-chlorobenzyl-12C6-glucamine"
                username_of_poster="allis"
                group_of_poster="users"
                date_time_posted="2003-05-07 19:54:20"
                date_time_modified="2006-10-16 16:02:00"
                approved="1"
                record_id="123">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="345.097915" avge_mass="345.7754" composition="H(20) C(15) N O(6) Cl">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="Cl" number="1"/>
         </umod:delta>
         <umod:alt_name>Harbury glyco-ICAT C12</umod:alt_name>
         <umod:xref>
            <umod:text>Silverman, Harbury,  J. Biol. Chem.  2002, 277, 34, pp. 30968-30975</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12185208</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICAT-H:13C(6)" full_name="N-iodoacetyl, p-chlorobenzyl-13C6-glucamine"
                username_of_poster="allis"
                group_of_poster="users"
                date_time_posted="2003-05-07 19:56:12"
                date_time_modified="2006-10-16 16:04:02"
                approved="1"
                record_id="124">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="351.118044" avge_mass="351.7313"
                     composition="H(20) C(9) 13C(6) N O(6) Cl">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="Cl" number="1"/>
         </umod:delta>
         <umod:alt_name>Harbury glyco-ICAT C13</umod:alt_name>
         <umod:xref>
            <umod:text>Silverman, Harbury,  J. Biol. Chem.  2002, 277, 34, pp. 30968-30975</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12185208</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cation:K" full_name="Replacement of proton by potassium"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-15 18:29:43"
                date_time_modified="2006-10-18 11:17:39"
                approved="1"
                record_id="530">
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="37.955882" avge_mass="38.0904" composition="H(-1) K">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="K" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thioacyl" full_name="3-sulfanylpropanoyl" username_of_poster="rabah"
                group_of_poster="users"
                date_time_posted="2003-06-05 13:38:19"
                date_time_modified="2010-08-17 16:42:36"
                approved="1"
                record_id="126">
         <umod:specificity hidden="1" site="N-term" position="Anywhere" classification="Other"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="87.998285" avge_mass="88.1283" composition="H(4) C(3) O S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Lee,W.T. and Conrad, D.H. 1985, J. Immunol. 134:518</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3155470</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>957432</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Pierce EZ-link Sulfo-NHS-SS-Biotin data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/products/browse.cfm?fldID=01030908</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Lomant, A.J. and Fairbanks, G., J.Mol. Biol. 104, 243-261 (1976)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11710128</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Reduced product of reaction with 3,3-Dithio-bis-(sulfosuccinimidyl)propionate. Note that name thioacyl is misleading and subject to change in a future revision. Can also be the product of reaction with EZ-Link Sulfo-NHS-SS-Biotin (Sulfosuccinimidyl 2-(biotinamido)-ethyl-1, 3-dithiopropionate) followed by reduction with DTT</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Fluoro" full_name="fluorination" username_of_poster="jschulte"
                group_of_poster="users"
                date_time_posted="2003-06-19 19:54:25"
                date_time_modified="2012-11-20 11:56:44"
                approved="1"
                record_id="127">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Non-standard residue"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Non-standard residue"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:delta mono_mass="17.990578" avge_mass="17.9905" composition="H(-1) F">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="F" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>1093385</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Journal of Drug Targeting (1993), 1(3), 259-67.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Fluorescein"
                full_name="5-Iodoacetamidofluorescein (Molecular Probe, Eugene, OR)"
                username_of_poster="Philip"
                group_of_poster="users"
                date_time_posted="2003-06-25 02:58:18"
                date_time_modified="2006-10-16 16:42:41"
                approved="1"
                record_id="128">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="388.082112" avge_mass="388.3497" composition="H(14) C(22) N O(6)">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>5-iodoacetamidofluorescein, [63368-54-7]</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3578767</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gorman, J. J., Eur. J. Biochem 1987, 168-9</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gorman, J. J., Anal Biochem 1984, 160, 376</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3311742</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Iodo" full_name="Iodination" username_of_poster="brettsp"
                group_of_poster="users"
                date_time_posted="2003-07-10 15:43:17"
                date_time_modified="2006-10-16 13:38:03"
                approved="1"
                record_id="129">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="125.896648" avge_mass="125.8965" composition="H(-1) I">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="I" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>2026710</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15627961</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diiodo" full_name="di-Iodination" username_of_poster="brettsp"
                group_of_poster="users"
                date_time_posted="2003-07-10 15:49:42"
                date_time_modified="2011-11-21 13:23:20"
                approved="1"
                record_id="130">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="251.793296" avge_mass="251.7931" composition="H(-2) I(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="I" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15627961</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Triiodo" full_name="tri-Iodination" username_of_poster="brettsp"
                group_of_poster="users"
                date_time_posted="2003-07-10 15:51:32"
                date_time_modified="2006-10-16 16:36:49"
                approved="1"
                record_id="131">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="377.689944" avge_mass="377.6896" composition="H(-3) I(3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="I" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>2026710</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15627961</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Myristoleyl" full_name="(cis-delta 5)-tetradecaenoyl"
                username_of_poster="tomneubert"
                group_of_poster="users"
                date_time_posted="2003-07-18 21:30:51"
                date_time_modified="2006-10-16 15:11:18"
                approved="1"
                record_id="134">
         <umod:specificity hidden="1" site="G" position="Protein N-term" classification="Co-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="208.182715" avge_mass="208.3398" composition="H(24) C(14) O">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>myristoyl with one double bond</umod:alt_name>
         <umod:alt_name>C14:1 acylation</umod:alt_name>
         <umod:xref>
            <umod:text>Neubert TA, Johnson RS, Hurley JB, Walsh KA (1992). The rod transducin alpha subunit amino terminus is heterogeneously fatty acylated. J Biol Chem. 267(26):18274-7.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>1326520</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Found on vision signal transduction proteins</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Pro-&gt;Pyrrolidinone" full_name="Proline oxidation to pyrrolidinone"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 23:00:19"
                date_time_modified="2006-10-13 15:37:42"
                approved="1"
                record_id="360">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-30.010565" avge_mass="-30.0260" composition="H(-2) C(-1) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Myristoyl+Delta:H(-4)"
                full_name="(cis,cis-delta 5, delta 8)-tetradecadienoyl"
                username_of_poster="tomneubert"
                group_of_poster="users"
                date_time_posted="2003-07-18 21:36:44"
                date_time_modified="2006-10-16 15:10:51"
                approved="1"
                record_id="135">
         <umod:specificity hidden="1" site="G" position="Protein N-term" classification="Co-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="206.167065" avge_mass="206.3239" composition="H(22) C(14) O">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>myristoyl with 2 double bonds</umod:alt_name>
         <umod:alt_name>C14:2 fatty acylation</umod:alt_name>
         <umod:xref>
            <umod:text>Neubert TA, Johnson RS, Hurley JB, Walsh KA (1992). The rod transducin alpha subunit amino terminus is heterogeneously fatty acylated. J Biol Chem. 267(26):18274-7.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>1326520</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Found on vision signal transduction proteins</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Benzoyl" full_name="labeling reagent light form (N-term &amp; K)"
                username_of_poster="samirjulka"
                group_of_poster="users"
                date_time_posted="2003-07-31 22:24:05"
                date_time_modified="2006-10-16 12:41:22"
                approved="1"
                record_id="136">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="104.026215" avge_mass="104.1061" composition="H(4) C(7) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Julka,S.Regnier,F.E Anal Chem. 2004 Oct 1;76(19):5799-806.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15456300</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex(5)HexNAc(2)" full_name="N-linked glycan core"
                username_of_poster="tpjd2"
                group_of_poster="users"
                date_time_posted="2003-08-06 11:31:37"
                date_time_modified="2006-10-16 17:22:04"
                approved="1"
                record_id="137">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1216.422863" avge_mass="1217.0880" composition="Hex(5) HexNAc(2)">
            <umod:element symbol="H" number="76"/>
            <umod:element symbol="C" number="46"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="35"/>
         </umod:delta>
         <umod:alt_name>Man5</umod:alt_name>
         <umod:misc_notes>Core structure of high-mannose N-linked oligosaccharides</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dansyl" full_name="5-dimethylaminonaphthalene-1-sulfonyl"
                username_of_poster="allis"
                group_of_poster="users"
                date_time_posted="2003-08-19 02:51:24"
                date_time_modified="2006-10-16 15:36:09"
                approved="1"
                record_id="139">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="233.051049" avge_mass="233.2862" composition="H(11) C(12) N O(2) S">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>dansyl chloride [605-65-2]</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="a-type-ion" full_name="ISD a-series (C-Term)"
                username_of_poster="suckau"
                group_of_poster="users"
                date_time_posted="2003-09-02 16:17:09"
                date_time_modified="2010-06-08 14:19:03"
                approved="0"
                record_id="140">
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Other"
                           spec_group="1">
            <umod:misc_notes>Virtual Modification  for MS/MS of a-type ions

corrected by subtraction of a further -O at 8.6.2010</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-46.005479" avge_mass="-46.0254" composition="H(-2) C(-1) O(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="-2"/>
         </umod:delta>
         <umod:alt_name>Decarboxylation of C-terminus as reaction inside the mass spectrometer</umod:alt_name>
         <umod:xref>
            <umod:text>D. Suckau, A. Resemann, Anal. Chem., 75(21):5817-24 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14588022</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>MS/MS experiments of mass spectrometric a-ions (MS^3) can be used for protein identification by library searching. T3-sequencing is such a technique (see reference). Search engines must recognize this \'virtual modification\' for this purpose.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Amidine"
                full_name="amidination of lysines or N-terminal amines with methyl acetimidate"
                username_of_poster="pnacman"
                group_of_poster="users"
                date_time_posted="2003-09-25 11:04:41"
                date_time_modified="2006-10-15 18:32:25"
                approved="1"
                record_id="141">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="41.026549" avge_mass="41.0519" composition="H(3) C(2) N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>ASMS 2004 abstract</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.indiana.edu/~reillyjp/ASMS2004/janecki_Ext-Abs%20Amidination.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12643539</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>6273432</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HexNAc(1)dHex(1)" full_name="HexNAc1dHex1" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:28:45"
                date_time_modified="2006-10-16 16:03:39"
                approved="1"
                record_id="142">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="349.137281" avge_mass="349.3337" composition="dHex HexNAc">
            <umod:element symbol="H" number="23"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="9"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="HexNAc(2)" full_name="HexNAc2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:37:55"
                date_time_modified="2006-10-16 16:43:09"
                approved="1"
                record_id="143">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="406.158745" avge_mass="406.3850" composition="HexNAc(2)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(3)" full_name="Hex3" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:39:30"
                date_time_modified="2006-10-16 16:59:36"
                approved="1"
                record_id="144">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="486.158471" avge_mass="486.4218" composition="Hex(3)">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="O" number="15"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="HexNAc(1)dHex(2)" full_name="HexNAc1dHex2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:40:57"
                date_time_modified="2006-10-16 17:01:52"
                approved="1"
                record_id="145">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="495.195190" avge_mass="495.4749" composition="dHex(2) HexNAc">
            <umod:element symbol="H" number="33"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="13"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(1)dHex(1)" full_name="Hex1HexNAc1dHex1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:42:27"
                date_time_modified="2006-10-16 17:02:06"
                approved="1"
                record_id="146">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="511.190105" avge_mass="511.4743" composition="dHex Hex HexNAc">
            <umod:element symbol="H" number="33"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="14"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="HexNAc(2)dHex(1)" full_name="HexNAc2dHex1" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:44:18"
                date_time_modified="2006-10-16 17:04:11"
                approved="1"
                record_id="147">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="552.216654" avge_mass="552.5262" composition="dHex HexNAc(2)">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="14"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(2)" full_name="Hex1HexNAc2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:48:18"
                date_time_modified="2006-10-16 17:04:35"
                approved="1"
                record_id="148">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="568.211569" avge_mass="568.5256" composition="Hex HexNAc(2)">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="15"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(1)NeuAc(1)" full_name="Hex1HexNAc1NeuAc1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:51:19"
                date_time_modified="2007-10-20 19:29:29"
                approved="1"
                record_id="149">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:delta mono_mass="656.227613" avge_mass="656.5877" composition="Hex HexNAc NeuAc">
            <umod:element symbol="H" number="40"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="18"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Saito T., Itoh T.; Journal of dairy Science, 75 (1992). p1768.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HexNAc(2)dHex(2)" full_name="HexNAc2dHex2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:52:36"
                date_time_modified="2006-10-16 17:11:45"
                approved="1"
                record_id="150">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="698.274563" avge_mass="698.6674" composition="dHex(2) HexNAc(2)">
            <umod:element symbol="H" number="46"/>
            <umod:element symbol="C" number="28"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="18"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(2)Pent(1)" full_name="Hex1HexNAc2Pent1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:53:29"
                date_time_modified="2006-10-16 17:12:02"
                approved="1"
                record_id="151">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="700.253828" avge_mass="700.6403" composition="Pent Hex HexNAc(2)">
            <umod:element symbol="H" number="44"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="19"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(2)dHex(1)" full_name="Hex1HexNAc2dHex1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:54:18"
                date_time_modified="2006-10-16 17:12:59"
                approved="1"
                record_id="152">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="714.269478" avge_mass="714.6668" composition="dHex Hex HexNAc(2)">
            <umod:element symbol="H" number="46"/>
            <umod:element symbol="C" number="28"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="19"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(2)HexNAc(2)" full_name="Hex2HexNAc2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:55:08"
                date_time_modified="2006-10-16 17:13:17"
                approved="1"
                record_id="153">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="730.264392" avge_mass="730.6662" composition="Hex(2) HexNAc(2)">
            <umod:element symbol="H" number="46"/>
            <umod:element symbol="C" number="28"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="20"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(3)HexNAc(1)Pent(1)" full_name="Hex3HexNAc1Pent1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:56:02"
                date_time_modified="2006-10-16 17:18:03"
                approved="1"
                record_id="154">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="821.280102" avge_mass="821.7289" composition="Pent Hex(3) HexNAc">
            <umod:element symbol="H" number="51"/>
            <umod:element symbol="C" number="31"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="24"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(2)dHex(1)Pent(1)" full_name="Hex1HexNAc2dHex1Pent1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:57:01"
                date_time_modified="2006-10-16 17:18:41"
                approved="1"
                record_id="155">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="846.311736" avge_mass="846.7815"
                     composition="Pent dHex Hex HexNAc(2)">
            <umod:element symbol="H" number="54"/>
            <umod:element symbol="C" number="33"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="23"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(2)dHex(2)" full_name="Hex1HexNAc2dHex2"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:57:52"
                date_time_modified="2006-10-16 17:18:56"
                approved="1"
                record_id="156">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="860.327386" avge_mass="860.8080" composition="dHex(2) Hex HexNAc(2)">
            <umod:element symbol="H" number="56"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="23"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(2)HexNAc(2)Pent(1)" full_name="Hex2HexNAc2Pent1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:58:38"
                date_time_modified="2006-10-16 17:19:11"
                approved="1"
                record_id="157">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="862.306651" avge_mass="862.7809" composition="Pent Hex(2) HexNAc(2)">
            <umod:element symbol="H" number="54"/>
            <umod:element symbol="C" number="33"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="24"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(2)HexNAc(2)dHex(1)" full_name="Hex2HexNAc2dHex1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:59:18"
                date_time_modified="2006-10-16 17:19:27"
                approved="1"
                record_id="158">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="876.322301" avge_mass="876.8074" composition="dHex Hex(2) HexNAc(2)">
            <umod:element symbol="H" number="56"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="24"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(3)HexNAc(2)" full_name="Hex3HexNAc2" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 12:59:59"
                date_time_modified="2006-10-16 17:19:58"
                approved="1"
                record_id="159">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="892.317216" avge_mass="892.8068" composition="Hex(3) HexNAc(2)">
            <umod:element symbol="H" number="56"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="25"/>
         </umod:delta>
         <umod:alt_name>chitobiose core</umod:alt_name>
      </umod:mod>
      <umod:mod title="Hex(1)HexNAc(1)NeuAc(2)" full_name="Hex1HexNAc1NeuAc2"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 13:01:06"
                date_time_modified="2007-10-20 19:30:21"
                approved="1"
                record_id="160">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:delta mono_mass="947.323029" avge_mass="947.8423" composition="Hex HexNAc NeuAc(2)">
            <umod:element symbol="H" number="57"/>
            <umod:element symbol="C" number="36"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="26"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Saito T., Itoh T.; Journal of dairy Science, 75 (1992). p1768.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex(3)HexNAc(2)P(1)" full_name="Hex3HexNAc2P1"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2003-09-29 13:02:02"
                date_time_modified="2006-10-16 17:20:48"
                approved="1"
                record_id="161">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="923.290978" avge_mass="923.7806" composition="P Hex(3) HexNAc(2)">
            <umod:element symbol="H" number="56"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="25"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Delta:S(-1)Se(1)" full_name="Selenium replaces sulfur"
                username_of_poster="pnacman"
                group_of_poster="users"
                date_time_posted="2003-10-14 11:24:28"
                date_time_modified="2012-03-09 11:23:23"
                approved="1"
                record_id="162">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Non-standard residue"
                           spec_group="2">
            <umod:misc_notes>Selenocysteine conventionally represented by 1 letter code U</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="47.944449" avge_mass="46.8950" composition="S(-1) Se">
            <umod:element symbol="S" number="-1"/>
            <umod:element symbol="Se" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0022</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12148805</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NBS:13C(6)" full_name="Shimadzu NBS-13C" username_of_poster="kuyama"
                group_of_poster="users"
                date_time_posted="2004-01-07 07:22:34"
                date_time_modified="2007-08-31 10:35:22"
                approved="0"
                record_id="171">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="159.008578" avge_mass="159.1144" composition="H(3) 13C(6) N O(2) S">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>NBS reagent heavy</umod:alt_name>
         <umod:xref>
            <umod:text>Rapid Communications in Mass Spectrometry, 17, 1642-1650 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12845591</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl:2H(3)13C(1)" full_name="monomethylated arginine"
                username_of_poster="sams"
                group_of_poster="users"
                date_time_posted="2005-06-30 18:19:34"
                date_time_modified="2006-10-14 19:40:53"
                approved="1"
                record_id="329">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="18.037835" avge_mass="18.0377" composition="H(-1) 2H(3) 13C">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="13C" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Identifying and quantifying in vivo methylation sites by heavy methyl SILAC, Shao-En Ong et al., Nature methods 1(2) 2004, 1-8</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dimethyl:2H(6)13C(2)" full_name="dimethylated arginine"
                username_of_poster="sams"
                group_of_poster="users"
                date_time_posted="2005-06-30 18:21:32"
                date_time_modified="2011-07-18 11:27:58"
                approved="1"
                record_id="330">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="3"/>
         <umod:delta mono_mass="36.075670" avge_mass="36.0754" composition="H(-2) 2H(6) 13C(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="13C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Triplex protein quantification based on stable isotope labeling by peptide dimethylation applied to cell and tissue lysates. Boersema PJ, Aye TT, van Veen TA, Heck AJ, Mohammed S. Proteomics. 2008 Nov;8(22):4624-32</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15782174</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NBS" full_name="Shimadzu NBS-12C" username_of_poster="kuyama"
                group_of_poster="users"
                date_time_posted="2004-01-07 07:25:07"
                date_time_modified="2007-08-31 10:34:53"
                approved="0"
                record_id="172">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="152.988449" avge_mass="153.1585" composition="H(3) C(6) N O(2) S">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>2-nitrobenzenesulfenyl</umod:alt_name>
         <umod:xref>
            <umod:text>12845591</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Rapid Communications in Mass Spectrometry, 17, 1642-1650 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(1)N(-1)18O(1)" full_name="glycosylated asparagine 18O labeling"
                username_of_poster="lobvi"
                group_of_poster="users"
                date_time_posted="2003-12-11 18:24:58"
                date_time_modified="2014-05-21 08:59:48"
                approved="1"
                record_id="170">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="2.988261" avge_mass="2.9845" composition="H(-1) N(-1) 18O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Anal. Biochem. 1992, 205:151-158</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>1443554</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Conversion of glycosylated asparagine residues upon deglycosylation with PGNase F in 18O labelled water.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="QAT" full_name="APTA-d0" username_of_poster="s_julka"
                group_of_poster="users"
                date_time_posted="2004-04-08 17:12:14"
                date_time_modified="2009-06-26 17:39:29"
                approved="1"
                record_id="195">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="171.149738" avge_mass="171.2600" composition="H(19) C(9) N(2) O">
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>(3-acrylamidopropyl)trimethylammonium</umod:alt_name>
         <umod:xref>
            <umod:text>15283597</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="BHT"
                full_name="Michael addition of BHT quinone methide to Cysteine and Lysine"
                username_of_poster="gonzo"
                group_of_poster="users"
                date_time_posted="2004-02-05 22:02:53"
                date_time_modified="2006-10-16 15:19:41"
                approved="1"
                record_id="176">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="2">
            <umod:misc_notes>Secondary adduct - much less common as C</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>Secondary adduct - much less common as C</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="3">
            <umod:misc_notes>Primary adduct formed</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="218.167065" avge_mass="218.3346" composition="H(22) C(15) O">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Butylated Hydroxytoluene</umod:alt_name>
         <umod:xref>
            <umod:text>9448752</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>BHT metabolism has been studied in rats and mice in relation to tumor promotion.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Delta:H(4)C(2)O(-1)S(1)" full_name="S-Ethylcystine from Serine"
                username_of_poster="UCDMSF"
                group_of_poster="users"
                date_time_posted="2005-06-20 20:09:02"
                date_time_modified="2006-10-16 10:00:57"
                approved="1"
                record_id="327">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="44.008456" avge_mass="44.1188" composition="H(4) C(2) O(-1) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>2005 ASMS poster Presentation TP 527</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Phosphoserine to S-ethylcystine\r\nvia Beta elimination/Michael addition of ethylthiol</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DAET" full_name="phosphorylation to amine thiol"
                username_of_poster="chemgirl18"
                group_of_poster="users"
                date_time_posted="2004-02-11 20:34:16"
                date_time_modified="2006-10-16 12:34:48"
                approved="1"
                record_id="178">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="87.050655" avge_mass="87.1866" composition="H(9) C(4) N O(-1) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>b-elimination thiol derivatization</umod:alt_name>
         <umod:xref>
            <umod:text>12216740</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>DAET = 2-(dimethylamino)ethanethiol; The phosphorylation to amine is the beta elimination of phosphate and Michael addition of 2-(dimethylamino)ethanethiol to the site.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Pro-&gt;Pyrrolidone" full_name="Pyrrolidone from Proline"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-02 17:39:05"
                date_time_modified="2006-11-14 11:12:17"
                approved="0"
                record_id="369">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.994915" avge_mass="-28.0101" composition="C(-1) O(-1)">
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(9)" full_name="13C(9) Silac label" username_of_poster="hs"
                group_of_poster="users"
                date_time_posted="2004-02-16 21:19:47"
                date_time_modified="2007-08-22 18:31:52"
                approved="1"
                record_id="184">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="9.030193" avge_mass="8.9339" composition="C(-9) 13C(9)">
            <umod:element symbol="C" number="-9"/>
            <umod:element symbol="13C" number="9"/>
         </umod:delta>
         <umod:alt_name>heavy tyrosine</umod:alt_name>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(9)+Phospho" full_name="C13 label (Phosphotyrosine)"
                username_of_poster="hs"
                group_of_poster="users"
                date_time_posted="2004-02-22 04:42:33"
                date_time_modified="2006-10-16 12:37:51"
                approved="1"
                record_id="185">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="88.996524" avge_mass="88.9138" composition="H C(-9) 13C(9) O(3) P">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="-9"/>
            <umod:element symbol="13C" number="9"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>heavy phosphotyrosine</umod:alt_name>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)" full_name="13C(6) Silac label" username_of_poster="hs"
                group_of_poster="users"
                date_time_posted="2004-02-28 19:54:10"
                date_time_modified="2007-08-22 18:29:56"
                approved="1"
                record_id="188">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="6.020129" avge_mass="5.9559" composition="C(-6) 13C(6)">
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HPG" full_name="Hydroxyphenylglyoxal arginine"
                username_of_poster="gcarven"
                group_of_poster="users"
                date_time_posted="2004-02-26 20:19:25"
                date_time_modified="2006-10-17 11:46:39"
                approved="1"
                record_id="186">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="132.021129" avge_mass="132.1162" composition="H(4) C(8) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>HPG arginine</umod:alt_name>
         <umod:xref>
            <umod:text>11698400</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11914093</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="2HPG" full_name="bis(hydroxphenylglyoxal) arginine"
                username_of_poster="gcarven"
                group_of_poster="users"
                date_time_posted="2004-02-26 22:05:25"
                date_time_modified="2009-06-26 17:37:17"
                approved="1"
                record_id="187">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="282.052824" avge_mass="282.2476" composition="H(10) C(16) O(5)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11698400</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>OH-PGO and PGO react with arginine at a stoichiometry of 2:1</umod:misc_notes>
      </umod:mod>
      <umod:mod title="QAT:2H(3)" full_name="APTA d3" username_of_poster="s_julka"
                group_of_poster="users"
                date_time_posted="2004-04-08 17:15:04"
                date_time_modified="2006-10-16 15:01:35"
                approved="1"
                record_id="196">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="174.168569" avge_mass="174.2784"
                     composition="H(16) 2H(3) C(9) N(2) O">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>(3-acrylamidopropyl)trimethylammonium</umod:alt_name>
         <umod:xref>
            <umod:text>15283597</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:18O(2)" full_name="O18 label at both C-terminal oxygens"
                username_of_poster="Hensbergen"
                group_of_poster="users"
                date_time_posted="2004-03-30 14:20:29"
                date_time_modified="2006-11-14 12:01:04"
                approved="1"
                record_id="193">
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="4.008491" avge_mass="3.9995" composition="O(-2) 18O(2)">
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="18O" number="2"/>
         </umod:delta>
         <umod:alt_name>Double O18 (C-term)</umod:alt_name>
         <umod:xref>
            <umod:text>11467524</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="AccQTag" full_name="6-aminoquinolyl-N-hydroxysuccinimidyl carbamate"
                username_of_poster="davidcreasy"
                group_of_poster="users"
                date_time_posted="2004-04-08 12:01:19"
                date_time_modified="2006-10-16 14:59:12"
                approved="1"
                record_id="194">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="170.048013" avge_mass="170.1674" composition="H(6) C(10) N(2) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Waters Application Note 930494</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www2.waters.com/watprod.nsf/newdocs/930494</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>14997490</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Hochleitner, E. O. et al, Proteomics 2004, 4, 669-676,</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dimethyl:2H(4)" full_name="DiMethyl-CHD2" username_of_poster="PhilipHsu"
                group_of_poster="users"
                date_time_posted="2004-04-20 07:07:29"
                date_time_modified="2006-10-15 18:24:07"
                approved="1"
                record_id="199">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="32.056407" avge_mass="32.0778" composition="2H(4) C(2)">
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:alt_name>reductive amination</umod:alt_name>
         <umod:xref>
            <umod:text>Anal Chem 2003. 75, 6843</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14670044</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Jue-Liang Hsu, Sheng-Yu Huang, and Shu-Hui Chen. Stable-Isotope based Multiplex Labeling Coupled with LC-MS/MS, HUPO 3rd ANNUAL WORLD CONGRESS, Bejing (China) 2004</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="EQAT" full_name="EAPTA d0" username_of_poster="s_julka"
                group_of_poster="users"
                date_time_posted="2004-04-08 17:21:08"
                date_time_modified="2006-10-16 15:05:02"
                approved="1"
                record_id="197">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="184.157563" avge_mass="184.2786" composition="H(20) C(10) N(2) O">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="EQAT:2H(5)" full_name="EAPTA d5" username_of_poster="s_julka"
                group_of_poster="users"
                date_time_posted="2004-04-08 17:25:24"
                date_time_modified="2006-10-16 15:07:31"
                approved="1"
                record_id="198">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="189.188947" avge_mass="189.3094"
                     composition="H(15) 2H(5) C(10) N(2) O">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ethanedithiol" full_name="EDT" username_of_poster="take"
                group_of_poster="users"
                date_time_posted="2004-04-20 08:27:30"
                date_time_modified="2006-10-16 11:07:38"
                approved="1"
                record_id="200">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="75.980527" avge_mass="76.1838" composition="H(4) C(2) O(-1) S(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11507762</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NEIAA:2H(5)" full_name="N-ethyl iodoacetamide-d5"
                username_of_poster="Botting"
                group_of_poster="users"
                date_time_posted="2004-05-18 11:11:52"
                date_time_modified="2006-10-16 12:38:09"
                approved="1"
                record_id="212">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="90.084148" avge_mass="90.1353" composition="H(2) 2H(5) C(4) N O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12766232</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(6)C(6)O(1)" full_name="Acrolein addition +94"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-05-06 18:54:17"
                date_time_modified="2006-10-16 12:38:28"
                approved="1"
                record_id="205">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="94.041865" avge_mass="94.1112" composition="H(6) C(6) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Acrolein94, FDP</umod:alt_name>
      </umod:mod>
      <umod:mod title="Delta:H(4)C(3)O(1)" full_name="Acrolein addition +56"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-05-06 18:55:58"
                date_time_modified="2006-10-16 10:16:29"
                approved="1"
                record_id="206">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="56.026215" avge_mass="56.0633" composition="H(4) C(3) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Acrolein56</umod:alt_name>
         <umod:xref>
            <umod:text>10825247</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15541752</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(2)C(3)" full_name="Acrolein addition +38"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-05-06 18:57:08"
                date_time_modified="2006-10-15 18:30:31"
                approved="1"
                record_id="207">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="38.015650" avge_mass="38.0480" composition="H(2) C(3)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
         <umod:alt_name>Acrolein38</umod:alt_name>
      </umod:mod>
      <umod:mod title="Delta:H(4)C(6)" full_name="Acrolein addition +76"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-05-06 18:59:23"
                date_time_modified="2006-10-16 11:08:13"
                approved="1"
                record_id="208">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="76.031300" avge_mass="76.0960" composition="H(4) C(6)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
         </umod:delta>
         <umod:alt_name>Acrolein76</umod:alt_name>
      </umod:mod>
      <umod:mod title="Delta:H(8)C(6)O(2)" full_name="Acrolein addition +112"
                username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-05-06 19:00:25"
                date_time_modified="2006-10-16 12:46:03"
                approved="1"
                record_id="209">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="112.052430" avge_mass="112.1265" composition="H(8) C(6) O(2)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Acrolein112</umod:alt_name>
      </umod:mod>
      <umod:mod title="ADP-Ribosyl" full_name="ADP  Ribose addition"
                username_of_poster="ionjockey"
                group_of_poster="users"
                date_time_posted="2004-05-27 20:53:37"
                date_time_modified="2013-08-02 11:49:42"
                approved="1"
                record_id="213">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other glycosylation"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Other glycosylation"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other glycosylation"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Other glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Other glycosylation"
                           spec_group="7"/>
         <umod:delta mono_mass="541.061110" avge_mass="541.3005"
                     composition="H(21) C(15) N(5) O(13) P(2)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="13"/>
            <umod:element symbol="P" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>P-T modification of Lysine</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1093/nar/gkq463</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>ADP</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0169</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0237</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15842200</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0295</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://betelgeuse.u-strasbg.fr/DocPARP/DocPARG/images/Structure-pADPR.jpg</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0231</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0168</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Mapping PARP-1 auto-ADP-ribosylation sites by liquid chromatography-tandem mass spectrometry</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/pr301219h</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Identification of the ADP-ribosylation sites in the PARP-1 automodification domain: analysis and implications</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ja906135d</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NEIAA" full_name="N-ethyl iodoacetamide-d0" username_of_poster="Botting"
                group_of_poster="users"
                date_time_posted="2004-05-18 11:10:37"
                date_time_modified="2006-10-16 12:15:11"
                approved="1"
                record_id="211">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="85.052764" avge_mass="85.1045" composition="H(7) C(4) N O">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12766232</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="iTRAQ4plex"
                full_name="Representative mass and accurate mass for 116 &amp; 117"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2004-06-08 14:04:07"
                date_time_modified="2011-11-21 14:08:42"
                approved="0"
                record_id="214">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="7"/>
         <umod:delta mono_mass="144.102063" avge_mass="144.1544"
                     composition="H(12) C(4) 13C(3) N 15N O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>AKA iTRAQ4plex116/7</umod:alt_name>
         <umod:alt_name>Applied Biosystems iTRAQ(TM) multiplexed quantitation chemistry</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems Chemistry Reference Guide</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04351918.pdf</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses. Use this value for all channels for quantitation purposes. mTRAQ heavy is identical to iTRAQ4plex 117</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Crotonaldehyde" full_name="Crotonaldehyde" username_of_poster="fatcat"
                group_of_poster="users"
                date_time_posted="2004-08-12 19:56:03"
                date_time_modified="2006-10-16 10:35:31"
                approved="1"
                record_id="253">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="70.041865" avge_mass="70.0898" composition="H(6) C(4) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11283024</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Bromo" full_name="bromination" username_of_poster="gerribe"
                group_of_poster="users"
                date_time_posted="2005-09-06 08:31:51"
                date_time_modified="2011-11-21 12:07:51"
                approved="1"
                record_id="340">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:delta mono_mass="77.910511" avge_mass="78.8961" composition="H(-1) Br">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Br" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9033387</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0174</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0175</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0176</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0173</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0180</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0179</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BROM</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Amino" full_name="Tyrosine oxidation to 2-aminotyrosine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 21:18:23"
                date_time_modified="2006-10-14 10:39:53"
                approved="1"
                record_id="342">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="15.010899" avge_mass="15.0146" composition="H N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Argbiotinhydrazide"
                full_name="oxidized Arginine biotinylated with biotin hydrazide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 22:36:58"
                date_time_modified="2006-11-14 12:10:30"
                approved="0"
                record_id="343">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="199.066699" avge_mass="199.2700" composition="H(13) C(9) N O(2) S">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Yoo, Byoung-Sam; Regnier, Fred E. Electrophoresis (2004), 25(9), 1334-1341.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15828771</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:18O(1)" full_name="O18 Labeling" username_of_poster="chemgirl18"
                group_of_poster="users"
                date_time_posted="2004-08-27 21:57:17"
                date_time_modified="2006-10-13 18:53:41"
                approved="1"
                record_id="258">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>alkaline phosphatase to dephosphorylate</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>alkaline phosphatase to dephosphorylate</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>alkaline phosphatase to dephosphorylate</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="C-term" position="Any C-term" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>digesting in labelled water</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="2.004246" avge_mass="1.9998" composition="O(-1) 18O">
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:alt_name>H2 18O Alkaline Phosphatase</umod:alt_name>
         <umod:xref>
            <umod:text>11467524</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(2)" full_name="13C(6) 15N(2) Silac label"
                username_of_poster="hs01"
                group_of_poster="users"
                date_time_posted="2004-08-30 16:23:02"
                date_time_modified="2014-06-09 09:40:49"
                approved="1"
                record_id="259">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="8.014199" avge_mass="7.9427" composition="C(-6) 13C(6) N(-2) 15N(2)">
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
         <umod:alt_name>heavy lysine</umod:alt_name>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Thiophospho" full_name="Thiophosphorylation"
                username_of_poster="mrbladergroen"
                group_of_poster="users"
                date_time_posted="2004-09-01 13:20:58"
                date_time_modified="2006-10-16 12:38:48"
                approved="1"
                record_id="260">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="95.943487" avge_mass="96.0455" composition="H O(2) P S">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12110917</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SPITC" full_name="4-sulfophenyl isothiocyanate"
                username_of_poster="hatlevig"
                group_of_poster="users"
                date_time_posted="2004-09-14 20:01:29"
                date_time_modified="2006-10-16 15:26:00"
                approved="1"
                record_id="261">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="214.971084" avge_mass="215.2495" composition="H(5) C(7) N O(3) S(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:alt_name>N-terminal / lysine sulfonation</umod:alt_name>
         <umod:xref>
            <umod:text>Wang et al. 2004. Rapid Commun Mass Spectrom. 18(1):96-102</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Chen et. al. Rapid Commun Mass Spectrom. 2004;18(2):191-8.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Shimadzu application note</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.shimadzu-biotech.net/literature/application_note/202_1.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>14745769</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14689565</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>16526082</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="IGBP" full_name="Light IDBEST tag for quantitation"
                username_of_poster="zqiao"
                group_of_poster="users"
                date_time_posted="2004-07-26 23:02:04"
                date_time_modified="2006-10-19 11:13:26"
                approved="1"
                record_id="243">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="296.016039" avge_mass="297.1478"
                     composition="H(13) C(12) N(2) O(2) Br">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="Br" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Under construction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.targetdiscovery.com/index.php?topic=prod.idbe</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Target discovery , Inc. IDBEST IGBP user manual</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cytopiloyne" full_name="nucleophilic addtion to cytopiloyne"
                username_of_poster="ymchiang"
                group_of_poster="users"
                date_time_posted="2004-11-10 03:13:23"
                date_time_modified="2006-10-16 16:35:54"
                approved="1"
                record_id="270">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="362.136553" avge_mass="362.3738" composition="H(22) C(19) O(7)">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15549660</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cytopiloyne is a polyacetylenic glucoside isolated form Bidens pilosa which can modulate T helper cell differentiation. Biotinylated cytopiloyne might be use to identify its receptor in T cell.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Cytopiloyne+water" full_name="nucleophilic addition to cytopiloyne+H2O"
                username_of_poster="ymchiang"
                group_of_poster="users"
                date_time_posted="2004-11-11 05:23:17"
                date_time_modified="2006-10-16 16:37:10"
                approved="1"
                record_id="271">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="380.147118" avge_mass="380.3891" composition="H(24) C(19) O(8)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="O" number="8"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15549660</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Cytopiloyne is a polyacetylenic glucoside isolated form Bidens pilosa which can modulated T helper cell differentiation. Biotinylated cytopiloyne might be use to identify its receptor in T cell.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(4)" full_name="13C(6) 15N(4) Silac label"
                username_of_poster="AFCS"
                group_of_poster="users"
                date_time_posted="2004-10-20 17:49:33"
                date_time_modified="2006-10-19 10:30:51"
                approved="1"
                record_id="267">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="10.008269" avge_mass="9.9296"
                     composition="C(-6) 13C(6) N(-4) 15N(4)">
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(9)15N(1)" full_name="13C(9) 15N(1) Silac label"
                username_of_poster="Deepa"
                group_of_poster="users"
                date_time_posted="2004-11-05 18:51:13"
                date_time_modified="2006-10-19 10:31:10"
                approved="1"
                record_id="269">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in AQUA experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="10.027228" avge_mass="9.9273" composition="C(-9) 13C(9) N(-1) 15N">
            <umod:element symbol="C" number="-9"/>
            <umod:element symbol="13C" number="9"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12771378</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(3)" full_name="Trideuteration" username_of_poster="mmolloy"
                group_of_poster="users"
                date_time_posted="2004-09-29 08:52:01"
                date_time_modified="2013-02-22 12:42:11"
                approved="1"
                record_id="262">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>for SILAC expt</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="3.018830" avge_mass="3.0185" composition="H(-3) 2H(3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="3"/>
         </umod:delta>
         <umod:alt_name>Trideuteration</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(5)15N(1)" full_name="13C(5) 15N(1) Silac label"
                username_of_poster="Deepa"
                group_of_poster="users"
                date_time_posted="2004-11-05 18:49:37"
                date_time_modified="2011-11-21 14:48:39"
                approved="1"
                record_id="268">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>SILAC label used in COFRADIC</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Result of conversion of 13C6, 15N4 arginine to 13C5, 15N1 proline</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in AQUA experiment</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:delta mono_mass="6.013809" avge_mass="5.9567" composition="C(-5) 13C(5) N(-1) 15N">
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="13C" number="5"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12771378</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PET" full_name="phosphorylation to pyridyl thiol"
                username_of_poster="vbad"
                group_of_poster="users"
                date_time_posted="2004-10-07 08:55:33"
                date_time_modified="2006-10-16 12:48:51"
                approved="1"
                record_id="264">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="121.035005" avge_mass="121.2028" composition="H(7) C(7) N O(-1) S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>b-elimination PET derivatisation</umod:alt_name>
         <umod:xref>
            <umod:text>Manfredo Quadroni in: ''Proteome Research: Mass Spectrometry (ed. P.James)'' pp 187-206</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>PET = 2-[4-pyridyl]ethanethiol. This modification is a chemical derivative, based on a alkaline catalysed beta-elimination of phosphoserines and phosphothreonines and subsequent 1,4-addition of 2-[4-pyridine]ethanethiol. These modified serines and threonines produce in MS/MS a characteristic fragment which can be used for precursor-ion-scan experiments.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CAF" full_name="sulfonation of N-terminus" username_of_poster="chens002"
                group_of_poster="users"
                date_time_posted="2004-11-16 14:25:33"
                date_time_modified="2007-01-03 19:34:35"
                approved="1"
                record_id="272">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="135.983029" avge_mass="136.1265" composition="H(4) C(3) O(4) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Ettan CAF MALDI</umod:alt_name>
         <umod:xref>
            <umod:text>Anal.Chem 75(7):156A-165A</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15732931</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>16046801</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>N-terminal sulfonation of diglycine to detect ubiquitination sites</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Xlink:SSD"
                full_name="covalent modification of lysine by cross-linking reagent"
                username_of_poster="tom"
                group_of_poster="users"
                date_time_posted="2004-11-16 20:20:17"
                date_time_modified="2006-10-17 11:43:47"
                approved="1"
                record_id="273">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="253.095023" avge_mass="253.2512" composition="H(15) C(12) N O(5)">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Partis MD et al. 1983 J Prot Chem 2 263-277</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Nitrosyl" full_name="S-nitrosylation" username_of_poster="dengh"
                group_of_poster="users"
                date_time_posted="2004-12-11 00:23:12"
                date_time_modified="2006-10-15 18:00:14"
                approved="1"
                record_id="275">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="28.990164" avge_mass="28.9982" composition="H(-1) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0230</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10442087</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>NTRY</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15688001</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which is posttranslationally modified by the attachment of a nitric oxide group on the sulfur atom of one or more cysteine residues.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="AEBS" full_name="Aminoethylbenzenesulfonylation"
                username_of_poster="plattm"
                group_of_poster="users"
                date_time_posted="2004-12-14 04:38:25"
                date_time_modified="2006-10-16 15:04:42"
                approved="1"
                record_id="276">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Artefact"
                           spec_group="4">
            <umod:misc_notes>Primary site of modification</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="183.035399" avge_mass="183.2276" composition="H(9) C(8) N O(2) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochim Biophys Acta. 1996 Feb 16; 1299(3):353-7</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>8597590</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Potential protein modification when using AEBSF (Pefabloc) as a serine protease inhibitor.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ethanolyl" full_name="Ethanolation" username_of_poster="knierman"
                group_of_poster="users"
                date_time_posted="2005-01-11 04:26:47"
                date_time_modified="2010-04-28 18:12:10"
                approved="1"
                record_id="278">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>reduced form of oxidation product</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>from reaction of SH group with iodoethanol</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:misc_notes>reduced form of oxidation product</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="44.026215" avge_mass="44.0526" composition="H(4) C(2) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Hydroxy ethyl</umod:alt_name>
         <umod:xref>
            <umod:text>15351294</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J Biol Chem. 1995 Apr 28;270(17):10017-26.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>A simplified procedure for the reduction and alkylation of cysteine residues in proteins prior to proteolytic digestion and mass spectral analysis. Hale JE, Butler JP, Gelfanova V, You JS, Knierman MD. Anal Biochem. 2004 Oct 1;333(1):174-81</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>7730303</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(2)+Dimethyl"
                full_name="Dimethyl 13C(6)15N(2) Silac label"
                username_of_poster="glick2"
                group_of_poster=""
                date_time_posted="2010-05-09 10:57:55"
                date_time_modified="2010-05-14 16:20:12"
                approved="0"
                record_id="987">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>SILAC+PTM</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="36.045499" avge_mass="35.9959"
                     composition="H(4) C(-4) 13C(6) N(-2) 15N(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>SILAC Introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>DIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HMVK"
                full_name="Michael addition of hydroxymethylvinyl ketone to cysteine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-03 15:59:33"
                date_time_modified="2006-10-16 12:15:35"
                approved="1"
                record_id="371">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="86.036779" avge_mass="86.0892" composition="H(6) C(4) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>hydroxymethylvinyl ketone</umod:alt_name>
         <umod:xref>
            <umod:text>11743741</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ethyl" full_name="Ethylation" username_of_poster="Qishanl"
                group_of_poster="users"
                date_time_posted="2005-01-27 23:18:07"
                date_time_modified="2009-10-02 18:28:37"
                approved="1"
                record_id="280">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Multiple"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9629898</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Effects of tryptic peptide esterification in MALDI mass spectrometry Anal. Chem. 2005, 77, 4185-4193</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/ac0481250</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="CoenzymeA" full_name="Cysteine modified Coenzyme A"
                username_of_poster="tremis"
                group_of_poster="users"
                date_time_posted="2005-02-01 17:10:00"
                date_time_modified="2006-10-16 17:15:18"
                approved="1"
                record_id="281">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="765.099560" avge_mass="765.5182"
                     composition="H(34) C(21) N(7) O(16) P(3) S">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="21"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="16"/>
            <umod:element symbol="P" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Structure</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://commons.wikimedia.org/wiki/Image:Coenzyme_a.png</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0306</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl+Deamidated" full_name="Deamidation followed by a methylation"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-14 10:39:08"
                date_time_modified="2007-02-04 12:25:42"
                approved="1"
                record_id="528">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="14.999666" avge_mass="15.0113" composition="H C N(-1) O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Glutamate methyl ester</umod:alt_name>
         <umod:xref>
            <umod:text>P02942</umod:text>
            <umod:source>Swiss-Prot</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DEAME</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Anal Chem. 2007 Jan 15;79(2):673-81.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(5)C(2)" full_name="Dimethylation of proline residue"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-15 18:02:34"
                date_time_modified="2006-10-15 18:03:16"
                approved="1"
                record_id="529">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="29.039125" avge_mass="29.0611" composition="H(5) C(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>DIMETP</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl:2H(2)" full_name="Deuterium Methylation of Lysine"
                username_of_poster="Glebivanov"
                group_of_poster="users"
                date_time_posted="2005-02-13 01:26:38"
                date_time_modified="2006-10-14 19:35:54"
                approved="1"
                record_id="284">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="16.028204" avge_mass="16.0389" composition="2H(2) C">
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Nature. 2004 Nov 18;432(7015):353-60. Epub 2004 Nov 03</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15525938</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SulfanilicAcid" full_name="Light Sulfanilic Acid (SA) C12"
                username_of_poster="apanchaud"
                group_of_poster="users"
                date_time_posted="2005-02-17 15:48:07"
                date_time_modified="2006-10-16 14:05:34"
                approved="1"
                record_id="285">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="155.004099" avge_mass="155.1744" composition="H(5) C(6) N O(2) S">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>C-Terminal/Glutamate/Aspartate sulfonation</umod:alt_name>
         <umod:xref>
            <umod:text>ASMS 2005: Panchaud et al. (Poster ThP 509) ''Combining protein identification and quantitation: C-terminal isotope-coded tagging''</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SulfanilicAcid:13C(6)" full_name="Heavy Sulfanilic Acid (SA) C13"
                username_of_poster="apanchaud"
                group_of_poster="users"
                date_time_posted="2005-02-17 15:55:52"
                date_time_modified="2006-10-16 14:08:42"
                approved="1"
                record_id="286">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="161.024228" avge_mass="161.1303" composition="H(5) 13C(6) N O(2) S">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>C-Terminal/Glutamate/Aspartate sulfonation</umod:alt_name>
         <umod:xref>
            <umod:text>ASMS 2005: Panchaud et al. (Poster ThP 509) ''Combining protein identification and quantitation: C-terminal isotope-coded tagging''</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9254591</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin-PEO-Amine" full_name="Biotin polyethyleneoxide amine"
                username_of_poster="TBricker1"
                group_of_poster="users"
                date_time_posted="2005-03-02 16:49:17"
                date_time_modified="2006-11-14 11:15:23"
                approved="0"
                record_id="289">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>EDC-coupled modification of D, E and C-terminus</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>EDC-coupled modification of D, E and C-terminus</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:misc_notes>EDC-coupled modification of D, E and C-terminus</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="356.188212" avge_mass="356.4835"
                     composition="H(28) C(16) N(4) O(3) S">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Introduction to Protein Labeling</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:url>
         </umod:xref>
         <umod:misc_notes>EDC crosslinker is used to couple biotin PEO-amine to carboxyl groups or 5\' phosphate groups</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Trp-&gt;Oxolactone" full_name="Tryptophan oxidation to oxolactone"
                username_of_poster="oxolactone"
                group_of_poster="users"
                date_time_posted="2005-02-25 23:30:20"
                date_time_modified="2006-10-14 10:06:01"
                approved="1"
                record_id="288">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="13.979265" avge_mass="13.9835" composition="H(-2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>7949339</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The cleavage of a peptide bond between Try-Xxx with oxidation of tryptophan to the oxolactone occurs in the presence of BNPS-skatole. This is a useful method for the chemical cleavage of proteins specifically at tryptophan residues.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Biotin-HPDP" full_name="Pierce EZ-Link Biotin-HPDP"
                username_of_poster="tgreco"
                group_of_poster="users"
                date_time_posted="2005-03-03 22:56:52"
                date_time_modified="2010-12-03 16:28:07"
                approved="0"
                record_id="290">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="428.191582" avge_mass="428.6124"
                     composition="H(32) C(19) N(4) O(3) S(2)">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>EZ-Link Biotin-HPDP (N-(6-(Biotinamido)hexyl)-3'-(2'-pyridyldithio)-propionamide</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=01031002</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:Hg(1)" full_name="Mercury Mercaptan" username_of_poster="tgreco"
                group_of_poster="users"
                date_time_posted="2005-03-03 23:53:00"
                date_time_modified="2006-10-16 15:09:18"
                approved="1"
                record_id="291">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="201.970617" avge_mass="200.5900" composition="Hg">
            <umod:element symbol="Hg" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10695144</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="IodoU-AMP" full_name="Cross-link of (Iodo)-uracil MP with W,F,Y"
                username_of_poster="davidERICanderson"
                group_of_poster="users"
                date_time_posted="2005-03-04 22:57:55"
                date_time_modified="2006-10-16 15:53:06"
                approved="1"
                record_id="292">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:misc_notes>Used in base/residue interactions (in principle?)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>Used in base/residue interactions (observed)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Used in base/residue interactions (in principle?)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="322.020217" avge_mass="322.1654"
                     composition="H(11) C(9) N(2) O(9) P">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>UV induced cross-link product of Iodo-U-amp with WFY</umod:alt_name>
         <umod:xref>
            <umod:text>6540775</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11112526</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11567090</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>One note about this chemistry is that for W you have to take care of O2 big time (and extract the I-uracil monophosphate with organics to get rid of residual iodide).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CAMthiopropanoyl" full_name="3-(carbamidomethylthio)propanoyl"
                username_of_poster="vanschra"
                group_of_poster="users"
                date_time_posted="2005-03-09 15:22:46"
                date_time_modified="2006-10-16 13:58:55"
                approved="1"
                record_id="293">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="145.019749" avge_mass="145.1796" composition="H(7) C(5) N O(2) S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>3-thiopropanoyl moiety from reduced DSP crosslinker or NHS-SS-biotin, modified with Iodoacetamide</umod:alt_name>
         <umod:xref>
            <umod:text>Peirce MJ, Wait R, Begum S, Saklatvala J, Cope AP (2004) Mol Cell Proteomics 3: 56-65</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Swaim CL, Smith JB, Smith DL (2004) J Am Soc Mass Spectrom 15:736-749</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15121203</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="IED-Biotin" full_name="biotinoyl-iodoacetyl-ethylenediamine"
                username_of_poster="alexey"
                group_of_poster="users"
                date_time_posted="2005-03-10 16:28:09"
                date_time_modified="2006-10-16 15:53:29"
                approved="1"
                record_id="294">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="326.141261" avge_mass="326.4145"
                     composition="H(22) C(14) N(4) O(3) S">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10906242</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="dHex" full_name="Fucose" username_of_poster="rsack"
                group_of_poster="users"
                date_time_posted="2005-03-22 16:57:00"
                date_time_modified="2011-11-21 13:16:16"
                approved="1"
                record_id="295">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:delta mono_mass="146.057909" avge_mass="146.1412" composition="dHex">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>deoxyhexose</umod:alt_name>
         <umod:xref>
            <umod:text>11344537</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Mormann, M., Macek, B., Gonzalez de Peredo, A., Hofsteenge, J., Peter-Katalinic, J. (2004). ''Structural studies on protein O-fucosylation by electron capture dissoziation.'' International Journal of Mass Spectrometry 234:11-21</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15189151</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl:2H(3)" full_name="deuterated methyl ester"
                username_of_poster="ndacoyas"
                group_of_poster="users"
                date_time_posted="2005-03-24 16:31:28"
                date_time_modified="2013-02-07 16:43:18"
                approved="1"
                record_id="298">
         <umod:specificity hidden="1" site="C-term" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>esterification of carboxylic acids using D3-Methanolic HCl</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>esterification of carboxylic acids using D3-Methanolic HCl</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>esterification of carboxylic acids using D3-Methanolic HCl</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>SILAC labelling with L-Methionine-(methyl-d3)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>SILAC labelling with L-Methionine-(methyl-d3)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="17.034480" avge_mass="17.0451" composition="H(-1) 2H(3) C">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>SILAC overview</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.sigmaaldrich.com/technical-documents/articles/stable-isotopes/stable-isotope-labeling-by-amino-acids.html</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carboxy" full_name="Carboxylation" username_of_poster="Carol"
                group_of_poster="users"
                date_time_posted="2005-03-29 22:55:44"
                date_time_modified="2006-11-14 11:08:50"
                approved="0"
                record_id="299">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Gamma-carboxylation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="3">
            <umod:misc_notes>Gamma-carboxylation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="M" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="5"/>
         <umod:delta mono_mass="43.989829" avge_mass="44.0095" composition="C O(2)">
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0114</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GGLU</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0363</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0032</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3802193</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0304</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Bromobimane" full_name="Monobromobimane derivative"
                username_of_poster="catsriku"
                group_of_poster="users"
                date_time_posted="2005-04-04 23:03:13"
                date_time_modified="2006-10-16 15:07:49"
                approved="1"
                record_id="301">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="190.074228" avge_mass="190.1986" composition="H(10) C(10) N(2) O(2)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>mBromobimane</umod:alt_name>
         <umod:xref>
            <umod:text>7856876</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Menadione" full_name="Menadione quinone derivative"
                username_of_poster="catsriku"
                group_of_poster="users"
                date_time_posted="2005-04-04 23:21:29"
                date_time_modified="2007-07-12 07:36:32"
                approved="0"
                record_id="302">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="170.036779" avge_mass="170.1641" composition="H(6) C(11) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Vitamin k3 (Q)</umod:alt_name>
         <umod:xref>
            <umod:text>15939799</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DeStreak" full_name="Cysteine mercaptoethanol"
                username_of_poster="harald"
                group_of_poster="users"
                date_time_posted="2005-04-11 14:06:08"
                date_time_modified="2006-10-16 11:07:55"
                approved="1"
                record_id="303">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="75.998285" avge_mass="76.1176" composition="H(4) C(2) O S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12442261</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(3)HexNAc(4)"
                full_name="Fucosylated biantennary (-2 galactose)"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 18:20:12"
                date_time_modified="2006-10-16 17:22:46"
                approved="1"
                record_id="305">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1444.533870" avge_mass="1445.3331"
                     composition="dHex Hex(3) HexNAc(4)">
            <umod:element symbol="H" number="92"/>
            <umod:element symbol="C" number="56"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="39"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(4)HexNAc(4)"
                full_name="Fucosylated biantennary (-1 galactose)"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:22:11"
                date_time_modified="2006-10-16 17:23:48"
                approved="1"
                record_id="307">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1606.586693" avge_mass="1607.4737"
                     composition="dHex Hex(4) HexNAc(4)">
            <umod:element symbol="H" number="102"/>
            <umod:element symbol="C" number="62"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="44"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(5)HexNAc(4)" full_name="Fucosylated biantennary"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:25:17"
                date_time_modified="2006-10-16 17:24:49"
                approved="1"
                record_id="308">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1768.639517" avge_mass="1769.6143"
                     composition="dHex Hex(5) HexNAc(4)">
            <umod:element symbol="H" number="112"/>
            <umod:element symbol="C" number="68"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="49"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(3)HexNAc(4)" full_name="Biantennary (-2 galactose)"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:27:51"
                date_time_modified="2006-10-16 17:22:29"
                approved="1"
                record_id="309">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1298.475961" avge_mass="1299.1919" composition="Hex(3) HexNAc(4)">
            <umod:element symbol="H" number="82"/>
            <umod:element symbol="C" number="50"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="35"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(4)HexNAc(4)" full_name="Biantennary (-1 galactose)"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:33:37"
                date_time_modified="2006-10-16 17:23:05"
                approved="1"
                record_id="310">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1460.528784" avge_mass="1461.3325" composition="Hex(4) HexNAc(4)">
            <umod:element symbol="H" number="92"/>
            <umod:element symbol="C" number="56"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="40"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(5)HexNAc(4)" full_name="Biantennary" username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:35:54"
                date_time_modified="2006-10-16 17:24:34"
                approved="1"
                record_id="311">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1622.581608" avge_mass="1623.4731" composition="Hex(5) HexNAc(4)">
            <umod:element symbol="H" number="102"/>
            <umod:element symbol="C" number="62"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="45"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cysteinyl" full_name="Cysteinylation" username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 19:59:43"
                date_time_modified="2006-12-17 11:28:36"
                approved="1"
                record_id="312">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="119.004099" avge_mass="119.1423" composition="H(5) C(3) N O(2) S">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0025</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lys-loss" full_name="Loss of C-terminal K from Heavy Chain of MAb"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 20:05:38"
                date_time_modified="2006-10-13 15:00:47"
                approved="1"
                record_id="313">
         <umod:specificity hidden="1" site="K" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-128.094963" avge_mass="-128.1723"
                     composition="H(-12) C(-6) N(-2) O(-1)">
            <umod:element symbol="H" number="-12"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>16078144</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Nmethylmaleimide" full_name="Nmethylmaleimide"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-04-25 20:12:24"
                date_time_modified="2006-10-16 17:26:09"
                approved="1"
                record_id="314">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="111.032028" avge_mass="111.0987" composition="H(5) C(5) N O(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="CyDye-Cy3" full_name="Cy3 CyDye DIGE Fluor saturation dye"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2006-03-27 11:17:51"
                date_time_modified="2012-09-15 00:20:19"
                approved="0"
                record_id="494">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="672.298156" avge_mass="672.8335"
                     composition="H(44) C(37) N(4) O(6) S">
            <umod:element symbol="H" number="44"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Formula needs confirmation</umod:alt_name>
         <umod:xref>
            <umod:text>12872219</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>GE Life Sciences data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>https://www.gelifesciences.com/gehcls_images/GELS/Related Content/Files/1314735988470/litdoc28953107AD_20110831002141.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DimethylpyrroleAdduct" full_name="2,5-dimethypyrrole"
                username_of_poster="Qishanl"
                group_of_poster="users"
                date_time_posted="2005-05-07 03:11:23"
                date_time_modified="2006-10-16 11:14:22"
                approved="1"
                record_id="316">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="78.046950" avge_mass="78.1118" composition="H(6) C(6)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="6"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Delta:H(2)C(5)" full_name="MDA adduct +62" username_of_poster="rkupfer"
                group_of_poster="users"
                date_time_posted="2005-05-12 22:00:21"
                date_time_modified="2006-10-16 10:29:55"
                approved="1"
                record_id="318">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="62.015650" avge_mass="62.0694" composition="H(2) C(5)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="5"/>
         </umod:delta>
         <umod:alt_name>MDA62</umod:alt_name>
         <umod:misc_notes>usually major adduct formed from malondialdehyde (MDA) with the amino group of lysine residues</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Delta:H(2)C(3)O(1)" full_name="MDA adduct +54"
                username_of_poster="rkupfer"
                group_of_poster="users"
                date_time_posted="2005-05-12 22:12:10"
                date_time_modified="2006-10-16 10:15:34"
                approved="1"
                record_id="319">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Malondialdehyde (MDA) adduct</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>5-hydro-5-methylimidazol-4-one, Methylglyoxal adduct</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="54.010565" avge_mass="54.0474" composition="H(2) C(3) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>MDA54</umod:alt_name>
         <umod:xref>
            <umod:text>Uchida K, Sakai K, Itakura K, Osawa T, Toyokuni S. 1977. Protein modification by lipid peroxidation products: formation of malondialdehyde-derived N(epsilon)-(2-propenol)lysine in proteins. Arch Biochem Biophys. 346(1):45-52</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Nethylmaleimide+water" full_name="Nethylmaleimidehydrolysis"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2005-05-16 22:18:42"
                date_time_modified="2006-10-17 11:40:14"
                approved="1"
                record_id="320">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="143.058243" avge_mass="143.1406" composition="H(9) C(6) N O(3)">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chemistry of Protein Conjugation and Crosslinking by Shan S. Wong, 1991, pg.32</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl+Acetyl:2H(3)"
                full_name="Mono-methylated lysine labelled with Acetyl_heavy"
                username_of_poster="buchanan"
                group_of_poster=""
                date_time_posted="2007-08-06 09:35:40"
                date_time_modified="2007-09-07 16:56:17"
                approved="0"
                record_id="768">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="59.045045" avge_mass="59.0817" composition="H 2H(3) C(3) O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xlink:B10621" full_name="bis-N-I-sulfonerahodamine"
                username_of_poster="dengh"
                group_of_poster="users"
                date_time_posted="2005-05-17 22:56:12"
                date_time_modified="2006-10-16 17:12:41"
                approved="1"
                record_id="323">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="713.093079" avge_mass="713.5626"
                     composition="H(30) C(31) N(4) O(6) S I">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="31"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
            <umod:element symbol="I" number="1"/>
         </umod:delta>
         <umod:misc_notes>Invitrogen X-link reagent</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DTBP" full_name="dimethyl 3,3\'-dithiobispropionimidate"
                username_of_poster="takesin"
                group_of_poster="users"
                date_time_posted="2005-05-18 08:43:26"
                date_time_modified="2006-11-14 11:16:21"
                approved="0"
                record_id="324">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="87.014270" avge_mass="87.1435" composition="H(5) C(3) N S">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/0668ss5.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>770170</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>imidoester cross-linker</umod:misc_notes>
      </umod:mod>
      <umod:mod title="FP-Biotin"
                full_name="10-ethoxyphosphinyl-N-(biotinamidopentyl)decanamide"
                username_of_poster="lmschopfer"
                group_of_poster="users"
                date_time_posted="2005-05-19 22:01:37"
                date_time_modified="2010-02-24 20:54:27"
                approved="0"
                record_id="325">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="572.316129" avge_mass="572.7405"
                     composition="H(49) C(27) N(4) O(5) P S">
            <umod:element symbol="H" number="49"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>O-ethyl-N-(biotinamidopentyl)decanamido phosphonate</umod:alt_name>
         <umod:xref>
            <umod:text>Liu, Patricelli and Cravatt; Activity-based protein profiling:  The serine hydrolases.  Proc Natl Acad Sci USA 96, 14694-14699 (1999)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Schopfer, Champion, Tamblyn, Thompson and Lockridge;  Characteristic mass spectral fragments of the organophosphorus agent FP-biotin and FP-biotinylated peptides from trypsin and bovine albumin (Tyr410).  Anal Biochem 345, 122-132 (2005)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10611275</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Grigoryan, Li, Xue, Grigoryan, Schopfer and Lockridge; Mass spectral characterization of organophosphate-labeled lysine in peptides.  Analytical Biochemistry 394, 92-100 (2009)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>FP-biotin was designed to label the active site serine of serine esterases/proteases.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Thiophos-S-S-biotin" full_name="thiophosphate labeled with biotin-HPDP"
                username_of_poster="lparker"
                group_of_poster="users"
                date_time_posted="2005-07-21 16:37:10"
                date_time_modified="2006-10-16 17:02:42"
                approved="1"
                record_id="332">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:NeutralLoss mono_mass="525.142894" avge_mass="525.6658" flag="false"
                              composition="H(34) C(19) N(4) O(5) P S(3)">
               <umod:element symbol="H" number="34"/>
               <umod:element symbol="C" number="19"/>
               <umod:element symbol="N" number="4"/>
               <umod:element symbol="O" number="5"/>
               <umod:element symbol="P" number="1"/>
               <umod:element symbol="S" number="3"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:NeutralLoss mono_mass="525.142894" avge_mass="525.6658" flag="false"
                              composition="H(34) C(19) N(4) O(5) P S(3)">
               <umod:element symbol="H" number="34"/>
               <umod:element symbol="C" number="19"/>
               <umod:element symbol="N" number="4"/>
               <umod:element symbol="O" number="5"/>
               <umod:element symbol="P" number="1"/>
               <umod:element symbol="S" number="3"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="525.142894" avge_mass="525.6658" flag="false"
                              composition="H(34) C(19) N(4) O(5) P S(3)">
               <umod:element symbol="H" number="34"/>
               <umod:element symbol="C" number="19"/>
               <umod:element symbol="N" number="4"/>
               <umod:element symbol="O" number="5"/>
               <umod:element symbol="P" number="1"/>
               <umod:element symbol="S" number="3"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="525.142894" avge_mass="525.6658"
                     composition="H(34) C(19) N(4) O(5) P S(3)">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="3"/>
         </umod:delta>
         <umod:alt_name>Thiophos-biotin disulfide</umod:alt_name>
      </umod:mod>
      <umod:mod title="Can-FP-biotin" full_name="6-N-biotinylaminohexyl isopropyl phosphate"
                username_of_poster="lmschopfer"
                group_of_poster="users"
                date_time_posted="2005-07-21 20:54:00"
                date_time_modified="2010-12-03 16:24:45"
                approved="0"
                record_id="333">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="447.195679" avge_mass="447.5291"
                     composition="H(34) C(19) N(3) O(5) P S">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>O-isopropyl-N-biotinylaminohexyl phosphonate</umod:alt_name>
         <umod:xref>
            <umod:text>Higson, Ferguson and Nikolaev; Synthesis of 6-N-biotinylaminohexyl isopropyl phosphorofluoridate:  A potent tool for the inhibition/isolation of serine esterases and proteases.  Synthesis 3, 407-409 (1999)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Commercially available from Toronto Research Chemicals Inc, as of 2005.  Designed to label the active site serine of serine esterases/proteases.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HNE+Delta:H(2)" full_name="reduced 4-Hydroxynonenal"
                username_of_poster="rkupfer"
                group_of_poster="users"
                date_time_posted="2005-08-10 20:52:36"
                date_time_modified="2011-07-18 11:28:34"
                approved="1"
                record_id="335">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="158.130680" avge_mass="158.2380" composition="H(18) C(9) O(2)">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11910026</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Michael addition adduct of 4-hydroxynonenal with histidine, cystein and lysine residues stabilized by reduction with NaBH4</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Thrbiotinhydrazide"
                full_name="oxidized Threonine biotinylated with biotin hydrazide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-09-10 23:01:28"
                date_time_modified="2006-11-14 12:12:13"
                approved="0"
                record_id="361">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="240.104482" avge_mass="240.3252" composition="H(16) C(10) N(4) O S">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>http://www.piercenet.com/Proteomics/browse.cfm?fldID=84EBE112-F871-4CA5-807F-47327153CFCB</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Yoo, Byoung-Sam; Regnier, Fred E. Electrophoresis (2004), 25(9), 1334-1341</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methylamine" full_name="Michael addition with methylamine"
                username_of_poster="zhulx"
                group_of_poster="users"
                date_time_posted="2005-08-12 21:55:51"
                date_time_modified="2006-10-14 10:02:51"
                approved="1"
                record_id="337">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="13.031634" avge_mass="13.0418" composition="H(3) C N O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Rapid Commun. Mass Spectrom. 2002; 16: 999-1001</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diisopropylphosphate" full_name="O-Diisopropylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster="users"
                date_time_posted="2005-09-14 18:05:04"
                date_time_modified="2011-12-05 16:14:23"
                approved="0"
                record_id="362">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:delta mono_mass="164.060231" avge_mass="164.1394" composition="H(13) C(6) O(3) P">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Main; Mode of action of anticholinesterases.  Pharmac Ther 6, 579-628 (1979)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Grigoryan, Li, Xue, Grigoryan, Schopfer and Lockridge; Mass spectral characterization of organophosphate-labeled lysine in peptides.  Analytical Biochemistry 394, 92-100 (2009)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Chen, J.; Chen, Y.; Gong, P.; Jiang, Y.; Li, Y. M.; Zhao, Y. F. Novel Phosphoryl Derivatization Method for Peptide Sequencing by Electrospray Ionization Mass Spectrometry. Rapid Commun. Spectrom. 2002, 16, 531-536.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Gao, X.; Hu, X. M.; Zhu, J.; Zeng, Z. P.; Han, D. X.; Tang, G.; Huang, X. T.; Xu, P. X.; Zhao, Y. F. An isotope (18O, 15N, and 2H) technique to investigate the metal ion interactions between the phosphoryl group and amino acid side chains by electrospray ionization mass spectrometry. J. Am. Soc. Mass Spectrom. 2011, 22, 689-702.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>A selective label for the active site serine of the serine esterase/protease family.  It has also been shown to label tyrosine in serum albumin.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Isopropylphospho" full_name="O-Isopropylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster="users"
                date_time_posted="2005-09-14 18:08:20"
                date_time_modified="2007-01-15 15:25:45"
                approved="0"
                record_id="363">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="122.013281" avge_mass="122.0596" composition="H(7) C(3) O(3) P">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Main;  Mode of action of anticholnesterases.  Pharmac Ther 6, 579-628 (1979)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by auto-catalytic dealkylation of the O-Diisopropylphosphate adduct.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ICPL:13C(6)"
                full_name="Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, heavy form"
                username_of_poster="suckau"
                group_of_poster="users"
                date_time_posted="2005-09-19 12:45:52"
                date_time_modified="2008-09-03 15:27:07"
                approved="0"
                record_id="364">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Use when labelling post-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Use when labelling pre-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="111.041593" avge_mass="111.0500" composition="H(3) 13C(6) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Bruker Daltonics order reference</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.bdal.de/life-science-tools/care-consumables-more/icpl-kit.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Schmidt A, Kellermann J, Lottspeich F (2005): A novel strategy for quantitative proteomics using isotope-coded protein labels. Proteomics 5: 4-15</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Attention: As the digest is typically applied AFTER ICPL_light/heavy labeling, only ProteinN-term labeling and Lys-specific labeling is applied.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CarbamidomethylDTT"
                full_name="Carbamidomethylated DTT modification of cysteine"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2009-01-09 01:39:37"
                date_time_modified="2009-01-10 19:03:36"
                approved="0"
                record_id="893">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="209.018035" avge_mass="209.2864"
                     composition="H(11) C(6) N O(3) S(2)">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18653769</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/18653769</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICPL"
                full_name="Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, light form"
                username_of_poster="suckau"
                group_of_poster="users"
                date_time_posted="2005-09-19 13:00:14"
                date_time_modified="2008-09-03 15:26:36"
                approved="0"
                record_id="365">
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Use when labelling pre-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Use when labelling post-digest</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="105.021464" avge_mass="105.0941" composition="H(3) C(6) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Bruker Daltonics order reference</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.bdal.de/life-science-tools/care-consumables-more/icpl-kit.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Schmidt A, Kellermann J, Lottspeich F (2005): A novel strategy for quantitative proteomics using isotope-coded protein labels. Proteomics 5: 4-15.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Attention: As the digest is typically applied AFTER ICPL_light/heavy labeling, only ProteinN-term labeling and Lys-specific labeling is applied.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Deamidated:18O(1)" full_name="Deamidation in presence of O18"
                username_of_poster="gerribe"
                group_of_poster="users"
                date_time_posted="2005-09-22 15:30:16"
                date_time_modified="2006-10-14 09:35:33"
                approved="1"
                record_id="366">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="2.988261" avge_mass="2.9845" composition="H(-1) N(-1) 18O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:misc_notes>Observed</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Arg-&gt;Orn" full_name="Ornithine from Arginine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-05 17:55:25"
                date_time_modified="2006-10-13 15:26:33"
                approved="1"
                record_id="372">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-42.021798" avge_mass="-42.0400" composition="H(-2) C(-1) N(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15489230</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cation:Cu[I]" full_name="Replacement of proton by copper"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-16 10:29:12"
                date_time_modified="2006-11-14 10:38:36"
                approved="1"
                record_id="531">
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="61.921774" avge_mass="62.5381" composition="H(-1) Cu">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Cu" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Dehydro" full_name="Half of a disulfide bridge"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-06 20:57:01"
                date_time_modified="2006-10-13 18:28:17"
                approved="1"
                record_id="374">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.007825" avge_mass="-1.0079" composition="H(-1)">
            <umod:element symbol="H" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0025</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diphthamide" full_name="Diphthamide" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-06 23:21:29"
                date_time_modified="2006-10-16 13:43:13"
                approved="1"
                record_id="375">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="143.118438" avge_mass="143.2068" composition="H(15) C(7) N(2) O">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0040</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DIPH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxyfarnesyl" full_name="hydroxyfarnesyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-07 20:36:20"
                date_time_modified="2006-10-16 15:20:11"
                approved="1"
                record_id="376">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="220.182715" avge_mass="220.3505" composition="H(24) C(15) O">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0103</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FAR0</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diacylglycerol" full_name="diacylglycerol" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-07 20:41:21"
                date_time_modified="2006-10-16 17:05:40"
                approved="1"
                record_id="377">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="576.511761" avge_mass="576.9334" composition="H(68) C(37) O(4)">
            <umod:element symbol="H" number="68"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0107</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DIAC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carboxyethyl" full_name="carboxyethyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-07 22:18:20"
                date_time_modified="2012-09-19 22:24:05"
                approved="1"
                record_id="378">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>Labeling with diethylpyrocarbonate (DEPC)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="72.021129" avge_mass="72.0627" composition="H(4) C(3) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0115</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hypusine" full_name="hypusine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-07 22:20:53"
                date_time_modified="2006-10-16 12:35:24"
                approved="1"
                record_id="379">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="87.068414" avge_mass="87.1204" composition="H(9) C(4) N O">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0116</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>HYPU</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Retinylidene" full_name="retinal" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-07 22:27:27"
                date_time_modified="2006-10-16 15:47:14"
                approved="1"
                record_id="380">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="266.203451" avge_mass="266.4204" composition="H(26) C(20)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="20"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0120</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Lys-&gt;AminoadipicAcid" full_name="alpha-amino adipic acid"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 17:41:37"
                date_time_modified="2006-10-14 10:33:11"
                approved="1"
                record_id="381">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="14.963280" avge_mass="14.9683" composition="H(-3) N(-1) O(2)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0122</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cys-&gt;PyruvicAcid" full_name="pyruvic acid from N-term cys"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 17:48:42"
                date_time_modified="2006-10-13 16:42:55"
                approved="1"
                record_id="382">
         <umod:specificity hidden="1" site="C" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-33.003705" avge_mass="-33.0961" composition="H(-3) N(-1) O S(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0127</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRUC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ammonia-loss" full_name="Loss of ammonia" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:00:01"
                date_time_modified="2007-07-15 20:11:01"
                approved="0"
                record_id="385">
         <umod:specificity hidden="0" site="C" position="Any N-term" classification="Artefact"
                           spec_group="3">
            <umod:misc_notes>Pyro-carbamidomethyl as a delta from Carbamidomethyl-Cys</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="4">
            <umod:misc_notes>N-Succinimide</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-17.026549" avge_mass="-17.0305" composition="H(-3) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
         <umod:alt_name>oxobutanoic acid from N term Thr</umod:alt_name>
         <umod:alt_name>pyruvic acid from N-term ser</umod:alt_name>
         <umod:xref>
            <umod:text>AA0127</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRUS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0129</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>OXOB</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phycocyanobilin" full_name="phycocyanobilin" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:06:19"
                date_time_modified="2006-10-16 17:07:44"
                approved="1"
                record_id="387">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="586.279135" avge_mass="586.6780" composition="H(38) C(33) N(4) O(6)">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="33"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:alt_name>phycobiliviolin</umod:alt_name>
         <umod:xref>
            <umod:text>AA0258</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0131</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>phycocyanobilin and phycobiliviolin have different structures but the same empirical formula</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Phycoerythrobilin" full_name="phycoerythrobilin"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:08:38"
                date_time_modified="2006-10-16 17:08:02"
                approved="1"
                record_id="388">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="588.294785" avge_mass="588.6939" composition="H(40) C(33) N(4) O(6)">
            <umod:element symbol="H" number="40"/>
            <umod:element symbol="C" number="33"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0132</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phytochromobilin" full_name="phytochromobilin"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:23:58"
                date_time_modified="2006-10-16 17:07:22"
                approved="1"
                record_id="389">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="584.263485" avge_mass="584.6621" composition="H(36) C(33) N(4) O(6)">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="33"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0133</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Heme" full_name="heme" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:27:20"
                date_time_modified="2006-10-16 17:10:28"
                approved="1"
                record_id="390">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="616.177295" avge_mass="616.4873"
                     composition="H(32) C(34) N(4) O(4) Fe">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="Fe" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0329</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0135</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0276</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Molybdopterin" full_name="molybdopterin" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:46:19"
                date_time_modified="2006-10-16 17:02:25"
                approved="1"
                record_id="391">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="521.884073" avge_mass="520.2668"
                     composition="H(11) C(10) N(5) O(8) P S(2) Mo">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="2"/>
            <umod:element symbol="Mo" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0142</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Quinone" full_name="quinone" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 18:56:28"
                date_time_modified="2006-10-15 18:03:47"
                approved="1"
                record_id="392">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="29.974179" avge_mass="29.9829" composition="H(-2) O(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0147</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0148</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TOPA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Glucosylgalactosyl" full_name="glucosylgalactosyl hydroxylysine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 19:19:13"
                date_time_modified="2007-12-04 08:55:56"
                approved="1"
                record_id="393">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="324.105647" avge_mass="324.2812" flag="false" composition="Hex(2)">
               <umod:element symbol="H" number="20"/>
               <umod:element symbol="C" number="12"/>
               <umod:element symbol="O" number="10"/>
            </umod:NeutralLoss>
            <umod:NeutralLoss mono_mass="162.052823" avge_mass="162.1406" flag="false" composition="Hex">
               <umod:element symbol="H" number="10"/>
               <umod:element symbol="C" number="6"/>
               <umod:element symbol="O" number="5"/>
            </umod:NeutralLoss>
            <umod:PepNeutralLoss mono_mass="324.105647" avge_mass="324.2812" required="false"
                                 composition="Hex(2)">
               <umod:element symbol="H" number="20"/>
               <umod:element symbol="C" number="12"/>
               <umod:element symbol="O" number="10"/>
            </umod:PepNeutralLoss>
            <umod:PepNeutralLoss mono_mass="162.052823" avge_mass="162.1406" required="false" composition="Hex">
               <umod:element symbol="H" number="10"/>
               <umod:element symbol="C" number="6"/>
               <umod:element symbol="O" number="5"/>
            </umod:PepNeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="340.100562" avge_mass="340.2806" composition="O Hex(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="O" number="11"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0153</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GPIanchor" full_name="glycosylphosphatidylinositol"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 19:31:10"
                date_time_modified="2006-11-14 11:13:52"
                approved="0"
                record_id="394">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="123.008530" avge_mass="123.0477" composition="H(6) C(2) N O(3) P">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0158</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0159</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0160</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0161</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0162</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0163</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0164</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0165</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0166</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PhosphoribosyldephosphoCoA"
                full_name="phosphoribosyl dephospho-coenzyme A"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 19:42:56"
                date_time_modified="2006-10-16 17:19:42"
                approved="1"
                record_id="395">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="881.146904" avge_mass="881.6335"
                     composition="H(42) C(26) N(7) O(19) P(3) S">
            <umod:element symbol="H" number="42"/>
            <umod:element symbol="C" number="26"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="19"/>
            <umod:element symbol="P" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0167</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GlycerylPE" full_name="glycerylphosphorylethanolamine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 19:50:17"
                date_time_modified="2006-10-16 15:08:39"
                approved="1"
                record_id="396">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="197.045310" avge_mass="197.1262" composition="H(12) C(5) N O(5) P">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0170</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Triiodothyronine" full_name="triiodo" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:08:28"
                date_time_modified="2006-10-16 16:59:19"
                approved="1"
                record_id="397">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="469.716159" avge_mass="469.7850" composition="H C(6) O I(3)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="I" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0177</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>THRN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Thyroxine" full_name="tetraiodo" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:10:14"
                date_time_modified="2006-10-16 17:08:51"
                approved="1"
                record_id="398">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="595.612807" avge_mass="595.6815" composition="C(6) O I(4)">
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="I" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0178</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>THRX</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Dha" full_name="Dehydroalanine (from Tyrosine)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:17:48"
                date_time_modified="2006-10-13 15:02:50"
                approved="1"
                record_id="400">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-94.041865" avge_mass="-94.1112" composition="H(-6) C(-6) O(-1)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0181</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Didehydro" full_name="2-amino-3-oxo-butanoic_acid"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:23:58"
                date_time_modified="2008-07-30 12:01:47"
                approved="1"
                record_id="401">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>oxoalanine formylglycine</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Any C-term" classification="Artefact"
                           spec_group="4">
            <umod:misc_notes>Lactone formation from C-terminal hydroxylysine</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-2.015650" avge_mass="-2.0159" composition="H(-2)">
            <umod:element symbol="H" number="-2"/>
         </umod:delta>
         <umod:alt_name>oxoalanine</umod:alt_name>
         <umod:xref>
            <umod:text>AA0183</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0185</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0365</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>OXOAS</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DHY</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15705169</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cys-&gt;Oxoalanine" full_name="oxoalanine" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:29:10"
                date_time_modified="2009-03-13 16:04:03"
                approved="1"
                record_id="402">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-17.992806" avge_mass="-18.0815" composition="H(-2) O S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>formylglycine</umod:alt_name>
         <umod:xref>
            <umod:text>AA0185</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>OXOAC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Dierks T, Miech C, Hummerjohann J, Schmidt B, Kertesz MA, von Figura K. Posttranslational formation of formylglycine in prokaryotic sulfatases by modification of either cysteine or serine. J. Biol. Chem. 1998; 273: 25 560</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>18722427</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>17450134</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ser-&gt;LacticAcid" full_name="lactic acid from N-term Ser"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 20:34:16"
                date_time_modified="2006-10-13 17:18:52"
                approved="1"
                record_id="403">
         <umod:specificity hidden="1" site="S" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.010899" avge_mass="-15.0146" composition="H(-1) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0186</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GluGlu" full_name="diglutamyl" username_of_poster="vcavett"
                group_of_poster="users"
                date_time_posted="2005-10-18 15:17:59"
                date_time_modified="2006-10-17 13:49:07"
                approved="0"
                record_id="451">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="258.085186" avge_mass="258.2280" composition="H(14) C(10) N(2) O(6)">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 277, Issue 48, 46140-46144, November 29, 2002</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12356754</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phosphoadenosine" full_name="AMP binding site"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 21:34:01"
                date_time_modified="2006-10-16 15:53:49"
                approved="1"
                record_id="405">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="329.052520" avge_mass="329.2059"
                     composition="H(12) C(10) N(5) O(6) P">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0371</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0227</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0203</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0267</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Glu" full_name="monoglutamyl" username_of_poster="vcavett"
                group_of_poster="users"
                date_time_posted="2005-10-18 15:07:18"
                date_time_modified="2006-10-17 13:48:54"
                approved="0"
                record_id="450">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="129.042593" avge_mass="129.1140" composition="H(7) C(5) N O(3)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12356754</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 277, Issue 48, 46140-46144, November 29, 2002</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxycinnamyl" full_name="hydroxycinnamyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 21:40:43"
                date_time_modified="2006-10-16 14:02:07"
                approved="1"
                record_id="407">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="146.036779" avge_mass="146.1427" composition="H(6) C(9) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0207</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Glycosyl" full_name="glycosyl-L-hydroxyproline"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 21:57:16"
                date_time_modified="2006-10-16 14:03:02"
                approved="1"
                record_id="408">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="148.037173" avge_mass="148.1140" composition="H(8) C(5) O(5)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0212</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FMNH" full_name="flavin mononucleotide" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 22:09:45"
                date_time_modified="2006-10-16 16:57:46"
                approved="1"
                record_id="409">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="454.088965" avge_mass="454.3279"
                     composition="H(19) C(17) N(4) O(9) P">
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0353</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0220</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0352</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FMNH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Archaeol" full_name="S-diphytanylglycerol diether"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-11 22:15:37"
                date_time_modified="2006-10-16 17:10:59"
                approved="1"
                record_id="410">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="634.662782" avge_mass="635.1417" composition="H(86) C(43) O(2)">
            <umod:element symbol="H" number="86"/>
            <umod:element symbol="C" number="43"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0223</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>ARCH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phenylisocyanate" full_name="phenyl isocyanate"
                username_of_poster="TING"
                group_of_poster="users"
                date_time_posted="2005-10-14 21:13:16"
                date_time_modified="2006-10-16 12:48:08"
                approved="1"
                record_id="411">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="119.037114" avge_mass="119.1207" composition="H(5) C(7) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phenylisocyanate:2H(5)" full_name="d5-phenyl isocyanate"
                username_of_poster="TING"
                group_of_poster="users"
                date_time_posted="2005-10-14 21:16:11"
                date_time_modified="2006-10-16 13:35:26"
                approved="1"
                record_id="412">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="124.068498" avge_mass="124.1515" composition="2H(5) C(7) N O">
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phosphoguanosine" full_name="phospho-guanosine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 15:50:03"
                date_time_modified="2006-10-16 16:01:42"
                approved="1"
                record_id="413">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="345.047435" avge_mass="345.2053"
                     composition="H(12) C(10) N(5) O(7) P">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0325</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0228</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxymethyl" full_name="hydroxymethyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 16:12:56"
                date_time_modified="2006-10-15 18:04:18"
                approved="1"
                record_id="414">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="30.010565" avge_mass="30.0260" composition="H(2) C O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0236</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MolybdopterinGD+Delta:S(-1)Se(1)"
                full_name="L-selenocysteinyl molybdenum bis(molybdopterin guanine dinucleotide)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 16:27:56"
                date_time_modified="2006-10-17 11:44:58"
                approved="1"
                record_id="415">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="1620.930224" avge_mass="1618.9096"
                     composition="H(47) C(40) N(20) O(26) P(4) S(3) Se Mo">
            <umod:element symbol="H" number="47"/>
            <umod:element symbol="C" number="40"/>
            <umod:element symbol="N" number="20"/>
            <umod:element symbol="O" number="26"/>
            <umod:element symbol="P" number="4"/>
            <umod:element symbol="S" number="3"/>
            <umod:element symbol="Se" number="1"/>
            <umod:element symbol="Mo" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0248</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dipyrrolylmethanemethyl" full_name="dipyrrolylmethanemethyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 16:33:24"
                date_time_modified="2006-11-14 10:37:01"
                approved="1"
                record_id="416">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="418.137616" avge_mass="418.3973" composition="H(22) C(20) N(2) O(8)">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="8"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0252</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PhosphoUridine" full_name="uridine phosphodiester"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 16:38:18"
                date_time_modified="2006-10-16 15:52:11"
                approved="1"
                record_id="417">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="306.025302" avge_mass="306.1660"
                     composition="H(11) C(9) N(2) O(8) P">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0256</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Glycerophospho" full_name="glycerophospho" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:02:51"
                date_time_modified="2006-10-16 14:03:40"
                approved="1"
                record_id="419">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="154.003110" avge_mass="154.0584" composition="H(7) C(3) O(5) P">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0264</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carboxy-&gt;Thiocarboxy" full_name="thiocarboxylic acid"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:08:53"
                date_time_modified="2006-10-14 10:59:20"
                approved="1"
                record_id="420">
         <umod:specificity hidden="1" site="G" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="15.977156" avge_mass="16.0656" composition="O(-1) S">
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>THIOG</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0265</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Sulfide" full_name="persulfide" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:22:45"
                date_time_modified="2012-11-23 11:25:27"
                approved="1"
                record_id="421">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:misc_notes>beta-thiolation</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:misc_notes>Addition of a single sulfur atom by Pi3-Tryptophan reagent to create thiol</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="31.972071" avge_mass="32.0650" composition="S">
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0269</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Instruction manual for the Pi3 Tryptophan selective resins</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.nestgrp.com/protocols/bmt/pi3tr.shtml</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>CYSP</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PyruvicAcidIminyl" full_name="N-pyruvic acid 2-iminyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:30:48"
                date_time_modified="2006-10-16 10:35:08"
                approved="1"
                record_id="422">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="V" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="70.005479" avge_mass="70.0468" composition="H(2) C(3) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0287</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0274</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0275</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:Se(1)" full_name="selenyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:49:48"
                date_time_modified="2006-10-16 11:14:44"
                approved="1"
                record_id="423">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="79.916520" avge_mass="78.9600" composition="Se">
            <umod:element symbol="Se" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0277</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MolybdopterinGD"
                full_name="molybdenum bis(molybdopterin guanine dinucleotide)"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:53:48"
                date_time_modified="2006-10-17 11:44:28"
                approved="1"
                record_id="424">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="1572.985775" avge_mass="1572.0146"
                     composition="H(47) C(40) N(20) O(26) P(4) S(4) Mo">
            <umod:element symbol="H" number="47"/>
            <umod:element symbol="C" number="40"/>
            <umod:element symbol="N" number="20"/>
            <umod:element symbol="O" number="26"/>
            <umod:element symbol="P" number="4"/>
            <umod:element symbol="S" number="4"/>
            <umod:element symbol="Mo" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0281</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0375</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dioxidation" full_name="dihydroxy" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 17:59:33"
                date_time_modified="2006-10-15 18:19:52"
                approved="1"
                record_id="425">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="7">
            <umod:misc_notes>trihydroxyphenylalanine</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="6">
            <umod:misc_notes>tryptophan oxidation to formylkynurenin</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Chemical derivative"
                           spec_group="5">
            <umod:misc_notes>phenylalanine oxidation to dihydroxyphenylalanine</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="M" position="Anywhere" classification="Post-translational"
                           spec_group="4">
            <umod:misc_notes>Sulphone</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="8">
            <umod:misc_notes>sulfinic acid</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="31.989829" avge_mass="31.9988" composition="O(2)">
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12686488</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0262</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CSIA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>MSONE</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DIHYDR</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>9252331</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0251</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0370</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Berlett, Barbara S.; Stadtman, Earl R. Journal of Biological Chemistry (1997), 272(33), 20313-20316.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0282</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0369</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0263</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Hyun Ae Woo, et. al., Science Vol. 300. no. 5619, pp. 653 - 656</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Octanoyl" full_name="octanoyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 18:04:46"
                date_time_modified="2013-03-07 10:09:12"
                approved="1"
                record_id="426">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:delta mono_mass="126.104465" avge_mass="126.1962" composition="H(14) C(8) O">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0290</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0386</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>OCTA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0584</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PhosphoHexNAc" full_name="N-acetylglucosamine-1-phosphoryl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 18:15:16"
                date_time_modified="2010-11-05 17:03:09"
                approved="1"
                record_id="428">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:delta mono_mass="283.045704" avge_mass="283.1724" composition="H O(3) P HexNAc">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0296</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PhosphoHex" full_name="phosphoglycosyl-D-mannose-1-phosphoryl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 18:18:51"
                date_time_modified="2006-10-16 15:48:55"
                approved="1"
                record_id="429">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="242.019154" avge_mass="242.1205" composition="H O(3) P Hex">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0297</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Palmitoleyl" full_name="palmitoleyl" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 19:57:30"
                date_time_modified="2009-06-21 21:18:50"
                approved="1"
                record_id="431">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Pre-translational"
                           spec_group="3"/>
         <umod:delta mono_mass="236.214016" avge_mass="236.3929" composition="H(28) C(16) O">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0308</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PALE</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>17141155</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cholesterol" full_name="cholesterol ester" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:00:10"
                date_time_modified="2006-10-16 16:36:21"
                approved="1"
                record_id="432">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="368.344302" avge_mass="368.6383" composition="H(44) C(27)">
            <umod:element symbol="H" number="44"/>
            <umod:element symbol="C" number="27"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0309</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CHOL</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Didehydroretinylidene" full_name="3,4-didehydroretinylidene"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:05:19"
                date_time_modified="2006-10-16 15:46:50"
                approved="1"
                record_id="433">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="264.187801" avge_mass="264.4046" composition="H(24) C(20)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="20"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0312</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="CHDH" full_name="cis-14-hydroxy-10,13-dioxo-7-heptadecenoic ester"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:08:49"
                date_time_modified="2006-10-16 15:49:28"
                approved="1"
                record_id="434">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="294.183109" avge_mass="294.3859" composition="H(26) C(17) O(4)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0316</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>CHDH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methylpyrroline" full_name="4-methyl-delta-1-pyrroline-5-carboxyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:21:00"
                date_time_modified="2006-10-16 13:37:33"
                approved="1"
                record_id="435">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="109.052764" avge_mass="109.1259" composition="H(7) C(6) N O">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0321</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>PYRK</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxyheme" full_name="hydroxyheme" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:29:16"
                date_time_modified="2006-10-16 17:10:10"
                approved="1"
                record_id="436">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="614.161645" avge_mass="614.4714"
                     composition="H(30) C(34) N(4) O(4) Fe">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="Fe" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0324</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MicrocinC7"
                full_name="(3-aminopropyl)(L-aspartyl-1-amino)phosphoryl-5-adenosine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:36:37"
                date_time_modified="2006-10-16 16:40:21"
                approved="1"
                record_id="437">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="386.110369" avge_mass="386.3003"
                     composition="H(19) C(13) N(6) O(6) P">
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0328</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cyano" full_name="cyano" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:42:40"
                date_time_modified="2006-10-14 19:43:48"
                approved="1"
                record_id="438">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="24.995249" avge_mass="25.0095" composition="H(-1) C N">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0333</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diironsubcluster" full_name="hydrogenase diiron subcluster"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:46:03"
                date_time_modified="2006-10-16 16:01:22"
                approved="1"
                record_id="439">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="342.786916" avge_mass="342.8760"
                     composition="H(-1) C(5) N(2) O(5) S(2) Fe(2)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="2"/>
            <umod:element symbol="Fe" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0334</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Amidino" full_name="amidino" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 20:49:10"
                date_time_modified="2006-10-15 19:58:03"
                approved="1"
                record_id="440">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="42.021798" avge_mass="42.0400" composition="H(2) C N(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0335</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FMN" full_name="O3-(riboflavin phosphoryl)" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 21:11:32"
                date_time_modified="2006-10-16 16:47:27"
                approved="1"
                record_id="442">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="438.094051" avge_mass="438.3285"
                     composition="H(19) C(17) N(4) O(8) P">
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0350</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0349</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FMN</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FMNC" full_name="S-(4a-FMN)" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 21:21:47"
                date_time_modified="2006-10-16 16:58:10"
                approved="1"
                record_id="443">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="456.104615" avge_mass="456.3438"
                     composition="H(21) C(17) N(4) O(9) P">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0351</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>FMNC</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="CuSMo" full_name="copper sulfido molybdopterin cytosine dinuncleotide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 21:34:38"
                date_time_modified="2006-10-16 17:20:14"
                approved="1"
                record_id="444">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="922.834855" avge_mass="922.0670"
                     composition="H(24) C(19) N(8) O(15) P(2) S(3) Cu Mo">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="O" number="15"/>
            <umod:element symbol="P" number="2"/>
            <umod:element symbol="S" number="3"/>
            <umod:element symbol="Mo" number="1"/>
            <umod:element symbol="Cu" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0355</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxytrimethyl" full_name="5-hydroxy-N6,N6,N6-trimethyl"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 21:40:08"
                date_time_modified="2006-10-16 10:28:02"
                approved="1"
                record_id="445">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="59.049690" avge_mass="59.0871" composition="H(7) C(3) O">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0359</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>TRIMETK</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Deoxy" full_name="reduction" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 22:00:35"
                date_time_modified="2006-10-13 17:16:30"
                approved="1"
                record_id="447">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3">
            <umod:misc_notes>Beta elimination of O-glycosylation under alkaline conditions followed by reduction</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>Beta elimination of O-glycosylation under alkaline conditions followed by reduction</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-15.994915" avge_mass="-15.9994" composition="O(-1)">
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:alt_name>Serine to Alanine</umod:alt_name>
         <umod:alt_name>Threonine to a-aminobutyrate</umod:alt_name>
         <umod:xref>
            <umod:text>AA0191</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>14235557</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0373</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Microcin" full_name="microcin E492 siderophore ester from serine"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 22:04:46"
                date_time_modified="2006-10-16 17:18:24"
                approved="1"
                record_id="448">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="831.197041" avge_mass="831.6871"
                     composition="H(37) C(36) N(3) O(20)">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="36"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="20"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0374</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Decanoyl" full_name="lipid" username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2005-10-15 22:14:11"
                date_time_modified="2006-10-16 14:04:24"
                approved="1"
                record_id="449">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="154.135765" avge_mass="154.2493" composition="H(18) C(10) O">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>AA0387</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>AA0385</umod:text>
            <umod:source>RESID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>DECA</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GluGluGlu" full_name="triglutamyl" username_of_poster="vcavett"
                group_of_poster="users"
                date_time_posted="2005-10-18 15:21:01"
                date_time_modified="2006-10-17 14:11:11"
                approved="0"
                record_id="452">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="387.127779" avge_mass="387.3419" composition="H(21) C(15) N(3) O(9)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="9"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12356754</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 277, Issue 48, 46140-46144, November 29, 2002</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GluGluGluGlu" full_name="tetraglutamyl" username_of_poster="vcavett"
                group_of_poster="users"
                date_time_posted="2005-10-18 15:22:24"
                date_time_modified="2006-10-17 14:16:56"
                approved="0"
                record_id="453">
         <umod:specificity hidden="1" site="C-term" position="Protein C-term"
                           classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="516.170373" avge_mass="516.4559"
                     composition="H(28) C(20) N(4) O(12)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="12"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Biol. Chem., Vol. 277, Issue 48, 46140-46144, November 29, 2002</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12356754</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HexN" full_name="Hexosamine" username_of_poster="xyuan"
                group_of_poster="users"
                date_time_posted="2005-11-08 18:58:20"
                date_time_modified="2006-10-16 14:09:11"
                approved="1"
                record_id="454">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere"
                           classification="Synth. pep. protect. gp."
                           spec_group="1"/>
         <umod:delta mono_mass="161.068808" avge_mass="161.1558" composition="H(11) C(6) N O(4)">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>Galactosamine</umod:alt_name>
         <umod:alt_name>Glucosamine</umod:alt_name>
      </umod:mod>
      <umod:mod title="Xlink:DMP-s" full_name="One end of crosslink attached, one end free"
                username_of_poster="mariana"
                group_of_poster="users"
                date_time_posted="2005-11-08 20:09:24"
                date_time_modified="2006-10-17 13:39:17"
                approved="0"
                record_id="455">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="154.110613" avge_mass="154.2096" composition="H(14) C(8) N(2) O">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Dimethyl pimelimidate</umod:alt_name>
         <umod:xref>
            <umod:text>Imidoester Cross-linkers</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/0668ss5.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Packman, L.C. and Perhan, R.N. (1982). Quaternary Structures the Pyruvate Dehydrogenase Multienzyme Complex of Bacillus Stearothermophilus Studies by a New Reversible Crosslinking Procedure with Bis(imidoesters). Biochem. 21, 5171-5175.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Hand, E.S., and Jencks, W.P. (1962). Mechanism of the reaction of imidoesters with amines. J. Am. Chem. Soc. 84, 3505-3514.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:DMP" full_name="Both ends of crosslink attached to same peptide"
                username_of_poster="mariana"
                group_of_poster="users"
                date_time_posted="2005-11-08 20:15:20"
                date_time_modified="2006-10-17 13:38:09"
                approved="0"
                record_id="456">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>Dimethyl pimelimidate, reaction with both ends</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Dimethyl pimelimidate, reaction with both ends</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="122.084398" avge_mass="122.1677" composition="H(10) C(7) N(2)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>Dimethyl pimelimidate</umod:alt_name>
         <umod:xref>
            <umod:text>Imidoester Cross-linkers</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/0668ss5.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Hand, E.S., and Jencks, W.P. (1962). Mechanism of the reaction of imidoesters with amines. J. Am. Chem. Soc. 84, 3505-3514.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Packman, L.C. and Perhan, R.N. (1982). Quaternary Structures the Pyruvate Dehydrogenase Multienzyme Complex of Bacillus StearothermophilusStudies by a New Reversible Crosslinking Procedure with Bis(imidoesters). Biochem. 21, 5171-5175.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NDA" full_name="naphthalene-2,3-dicarboxaldehyde"
                username_of_poster="Dekker"
                group_of_poster="users"
                date_time_posted="2005-11-11 11:03:32"
                date_time_modified="2006-10-17 13:41:04"
                approved="0"
                record_id="457">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="175.042199" avge_mass="175.1855" composition="H(5) C(13) N">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>2081203</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>fluorescent derivative</umod:misc_notes>
      </umod:mod>
      <umod:mod title="SPITC:13C(6)" full_name="4-sulfophenyl isothiocyanate (Heavy C13)"
                username_of_poster="apanchaud"
                group_of_poster="users"
                date_time_posted="2005-12-19 08:37:57"
                date_time_modified="2006-10-16 15:25:36"
                approved="1"
                record_id="464">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="220.991213" avge_mass="221.2054"
                     composition="H(5) C 13C(6) N O(3) S(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:alt_name>N-terminal / lysine sulfonation</umod:alt_name>
         <umod:xref>
            <umod:text>16526082</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Lee et al, Rapid Commun Mass Spetrom 2004, 18, 3019-3027</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="TMAB:2H(9)" full_name="d9-4-trimethyllammoniumbutyryl-"
                username_of_poster="xwei"
                group_of_poster="users"
                date_time_posted="2006-02-15 18:36:06"
                date_time_modified="2006-10-17 12:08:34"
                approved="0"
                record_id="477">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2">
            <umod:NeutralLoss mono_mass="68.129990" avge_mass="68.1657" flag="false"
                              composition="2H(9) C(3) N">
               <umod:element symbol="2H" number="9"/>
               <umod:element symbol="C" number="3"/>
               <umod:element symbol="N" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="68.129990" avge_mass="68.1657" flag="false"
                              composition="2H(9) C(3) N">
               <umod:element symbol="2H" number="9"/>
               <umod:element symbol="C" number="3"/>
               <umod:element symbol="N" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="137.164030" avge_mass="137.2476" composition="H(5) 2H(9) C(7) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="2H" number="9"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Mass Spectrom. 2005; 40: 238-249</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="TMAB" full_name="4-trimethyllammoniumbutyryl-" username_of_poster="xwei"
                group_of_poster="users"
                date_time_posted="2006-02-15 03:10:16"
                date_time_modified="2006-10-17 12:08:04"
                approved="0"
                record_id="476">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2">
            <umod:NeutralLoss mono_mass="59.073499" avge_mass="59.1103" flag="false"
                              composition="H(9) C(3) N">
               <umod:element symbol="H" number="9"/>
               <umod:element symbol="C" number="3"/>
               <umod:element symbol="N" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="59.073499" avge_mass="59.1103" flag="false"
                              composition="H(9) C(3) N">
               <umod:element symbol="H" number="9"/>
               <umod:element symbol="C" number="3"/>
               <umod:element symbol="N" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="128.107539" avge_mass="128.1922" composition="H(14) C(7) N O">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Mass Spectrom. 2005; 40: 238-249</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FTC" full_name="fluorescein-5-thiosemicarbazide"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2006-02-20 11:15:03"
                date_time_modified="2006-10-16 16:45:27"
                approved="1"
                record_id="478">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="421.073241" avge_mass="421.4259"
                     composition="H(15) C(21) N(3) O(5) S">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="21"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ahn, B., Rhee, S.G., and Stadtmann, E. R. (1987) Anal. Biochem.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="AEC-MAEC" full_name="aminoethylcysteine" username_of_poster="mpcusack"
                group_of_poster="users"
                date_time_posted="2006-01-20 00:46:08"
                date_time_modified="2007-09-26 22:43:16"
                approved="0"
                record_id="472">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>pT gives beta-methylaminoethylcysteine</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>pS gives aminoethylcysteine</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="59.019355" avge_mass="59.1334" composition="H(5) C(2) N O(-1) S">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>beta-methylaminoethylcysteine</umod:alt_name>
         <umod:xref>
            <umod:text>Z. A. Knight et al, Nature Biotech., 21(9) 1047-1054 (2003)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Modification procedure used for phosphopeptide mapping</umod:misc_notes>
      </umod:mod>
      <umod:mod title="BADGE" full_name="Bisphenol A diglycidyl ether derivative"
                username_of_poster="TNO"
                group_of_poster="users"
                date_time_posted="2006-03-27 09:30:54"
                date_time_modified="2006-10-17 14:09:11"
                approved="0"
                record_id="493">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Non-standard residue"
                           spec_group="1">
            <umod:misc_notes>found in canned food products</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="340.167459" avge_mass="340.4129" composition="H(24) C(21) O(4)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="21"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Berger U, Oehme M, Girardin L., Fresenius J Anal Chem. 2001 Jan 2;369(2):115-23.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Found in canned food products</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:2H(4)" full_name="4,4,5,5-D4 Lysine" username_of_poster="yunwah"
                group_of_poster="users"
                date_time_posted="2006-02-20 11:44:19"
                date_time_modified="2010-06-04 15:12:04"
                approved="0"
                record_id="481">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Cambridge Labs DLM-451</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="4.025107" avge_mass="4.0246" composition="H(-4) 2H(4)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="2H" number="4"/>
         </umod:delta>
         <umod:alt_name>K4</umod:alt_name>
         <umod:misc_notes>For SILAC experiments</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Hep" full_name="Heptose" username_of_poster="anikolakakis"
                group_of_poster="users"
                date_time_posted="2006-03-24 15:59:43"
                date_time_modified="2006-10-16 15:08:16"
                approved="1"
                record_id="490">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="192.063388" avge_mass="192.1666" composition="Hep">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="CyDye-Cy5" full_name="Cy5 CyDye DIGE Fluor saturation dye"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2006-03-27 11:53:04"
                date_time_modified="2006-10-17 14:18:49"
                approved="0"
                record_id="495">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="684.298156" avge_mass="684.8442"
                     composition="H(44) C(38) N(4) O(6) S">
            <umod:element symbol="H" number="44"/>
            <umod:element symbol="C" number="38"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Amersham (GE Healthcare) instruction leaflet 25800983PL Rev-B, 2003</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12872219</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DHP"
                full_name="Dehydropyrrolizidine alkaloid (dehydroretronecine) on cysteines"
                username_of_poster="rowanrainbow"
                group_of_poster="users"
                date_time_posted="2006-03-07 08:40:13"
                date_time_modified="2006-10-17 12:07:19"
                approved="0"
                record_id="488">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="118.065674" avge_mass="118.1558" composition="H(8) C(8) N">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:alt_name>Dehydroretronecine</umod:alt_name>
         <umod:xref>
            <umod:text>16222722</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="BHTOH"
                full_name="Michael addition of t-butyl hydroxylated BHT (BHTOH) to C, H or K"
                username_of_poster="rkupfer"
                group_of_poster="users"
                date_time_posted="2006-04-10 19:27:51"
                date_time_modified="2006-10-17 13:42:22"
                approved="0"
                record_id="498">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>primary adduct</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:delta mono_mass="234.161980" avge_mass="234.3340" composition="H(22) C(15) O(2)">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>t-butyl hydroxylated BHT</umod:alt_name>
         <umod:xref>
            <umod:text>16533022</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>BHTOH is formed upon metabolism of BHT with P450 enzymes. The BHTOH is further metabolized to its quinone methide (electrophile) which reacts with -SH and -NH2 groups</umod:misc_notes>
      </umod:mod>
      <umod:mod title="IGBP:13C(2)" full_name="Heavy IDBEST tag for quantitation"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2006-04-14 18:44:41"
                date_time_modified="2006-10-19 10:48:25"
                approved="1"
                record_id="499">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="298.022748" avge_mass="299.1331"
                     composition="H(13) C(10) 13C(2) N(2) O(2) Br">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="13C" number="2"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="Br" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Under construction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.targetdiscovery.com/index.php?topic=prod.idbe</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Target discovery , Inc. IDBEST IGBP user manual</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Nmethylmaleimide+water" full_name="Nmethylmaleimidehydrolysis"
                username_of_poster="whaskins"
                group_of_poster="users"
                date_time_posted="2006-04-14 22:58:34"
                date_time_modified="2006-10-17 12:12:40"
                approved="0"
                record_id="500">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="129.042593" avge_mass="129.1140" composition="H(7) C(5) N O(3)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chemistry of Protein Conjugation and Crosslinking by Shan S. Wong, 1991, pg.32</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PyMIC" full_name="3-methyl-2-pyridyl isocyanate"
                username_of_poster="TING"
                group_of_poster="users"
                date_time_posted="2006-04-18 20:46:17"
                date_time_modified="2006-10-17 12:19:15"
                approved="0"
                record_id="501">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="134.048013" avge_mass="134.1353" composition="H(6) C(7) N(2) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="LG-lactam-K" full_name="Levuglandinyl - lysine lactam adduct"
                username_of_poster="alexparf"
                group_of_poster="users"
                date_time_posted="2006-04-27 17:56:39"
                date_time_modified="2006-11-14 12:04:37"
                approved="0"
                record_id="503">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="332.198760" avge_mass="332.4339" composition="H(28) C(20) O(4)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Salomon RG. Antioxid Redox Signal. 2005 Jan-Feb;7(1-2):185-201.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Chem Phys Lipids. 2005 Mar;134(1):1-20.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15650407</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15752459</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="BisANS"
                full_name="4,4\'-dianilino-1,1\'-binaphthyl-5,5\'-disulfonic acid"
                username_of_poster="app95d"
                group_of_poster="users"
                date_time_posted="2006-07-05 23:31:08"
                date_time_modified="2012-05-15 20:15:06"
                approved="0"
                record_id="519">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="594.091928" avge_mass="594.6569"
                     composition="H(22) C(32) N(2) O(6) S(2)">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="32"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce, A., Dewaal, E., Vanremmen, H., Richardson, A. &amp; Chaudhuri, A. (2006). A Novel Approach for Screening the Proteome for Changes in Protein Conformation. Biochemistry 45, 3077-3085.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Piperidine" full_name="Piperidination" username_of_poster="PhilipHsu"
                group_of_poster="users"
                date_time_posted="2006-07-20 08:37:21"
                date_time_modified="2006-10-17 12:05:44"
                approved="0"
                record_id="520">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="68.062600" avge_mass="68.1170" composition="H(8) C(5)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Jue-Liang Hsu, Sheng-Yu Huang, and Shu-Hui Chen. Stable-Isotope based Multiplex Labeling Coupled with LC-MS/MS, HUPO 3rd ANNUAL WORLD CONGRESS, Bejing (China) 2004</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Diethyl" full_name="Diethylation, analogous to Dimethylation"
                username_of_poster="PhilipHsu"
                group_of_poster="users"
                date_time_posted="2006-06-15 07:18:26"
                date_time_modified="2006-10-17 12:00:33"
                approved="0"
                record_id="518">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="56.062600" avge_mass="56.1063" composition="H(8) C(4)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Proteome Res. 2005, 4, 101-108.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="LG-Hlactam-K" full_name="Levuglandinyl - lysine hydroxylactam adduct"
                username_of_poster="alexparf"
                group_of_poster="users"
                date_time_posted="2006-04-27 18:02:17"
                date_time_modified="2006-11-14 12:04:47"
                approved="0"
                record_id="504">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="348.193674" avge_mass="348.4333" composition="H(28) C(20) O(5)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Salomon RG. Antioxid Redox Signal. 2005 Jan-Feb;7(1-2):185-201.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Chem Phys Lipids. 2005 Mar;134(1):1-20.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15650407</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15752459</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dimethyl:2H(4)13C(2)" full_name="DiMethyl-C13HD2"
                username_of_poster="oded"
                group_of_poster="users"
                date_time_posted="2006-05-08 22:03:41"
                date_time_modified="2006-10-15 18:26:15"
                approved="1"
                record_id="510">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="34.063117" avge_mass="34.0631" composition="2H(4) 13C(2)">
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="13C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>16335955</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>J Proteome Res. 2005 Nov-Dec;4(6):2099-108</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="C8-QAT"
                full_name="[3-(2,5)-Dioxopyrrolidin-1-yloxycarbonyl)-propyl]dimethyloctylammonium"
                username_of_poster="amadian"
                group_of_poster="users"
                date_time_posted="2006-05-13 20:55:20"
                date_time_modified="2006-12-03 19:43:27"
                approved="0"
                record_id="513">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="227.224915" avge_mass="227.3862" composition="H(29) C(14) N O">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>16771548</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex(2)" full_name="Lactosylation" username_of_poster="molle"
                group_of_poster="users"
                date_time_posted="2006-05-11 13:21:17"
                date_time_modified="2006-10-17 13:44:30"
                approved="0"
                record_id="512">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other glycosylation"
                           spec_group="2">
            <umod:misc_notes>Maillard reaction (first event)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other glycosylation"
                           spec_group="1">
            <umod:misc_notes>Maillard reaction (first event)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="324.105647" avge_mass="324.2812" composition="Hex(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
         <umod:alt_name>lac</umod:alt_name>
         <umod:xref>
            <umod:text>ANALYTICAL BIOCHEMISTRY 259, 152-161 (1998)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>BIOCHIMECAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 236, 413-417 (1997)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Lactosylation of bovine Beta-Lactoglobulin</umod:misc_notes>
      </umod:mod>
      <umod:mod title="LG-lactam-R" full_name="Levuglandinyl - arginine lactam adduct"
                username_of_poster="alexparf"
                group_of_poster="users"
                date_time_posted="2006-04-27 18:05:11"
                date_time_modified="2006-10-17 14:08:20"
                approved="0"
                record_id="505">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="290.176961" avge_mass="290.3939"
                     composition="H(26) C(19) N(-2) O(4)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15650407</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15752459</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Chem Phys Lipids. 2005 Mar;134(1):1-20.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Antioxid Redox Signal. 2005 Jan-Feb;7(1-2):185-201.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Withaferin" full_name="Modification of cystein by withaferin"
                username_of_poster="ProtUA"
                group_of_poster=""
                date_time_posted="2011-04-06 12:31:40"
                date_time_modified="2011-04-08 16:37:15"
                approved="0"
                record_id="1036">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="470.266839" avge_mass="470.5977" composition="H(38) C(28) O(6)">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="28"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PMID: 21432907</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/21432907</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Preparation of Withaferin-A loaded PLGA Nanoparticles by Modified Emulsion Diffusion Evaporation Technique</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.ripublication.com/ijna/ijnav4n2_12.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-88317" full_name="desthiobiotin fluorophosphonate"
                username_of_poster="rbomgard"
                group_of_poster=""
                date_time_posted="2011-05-06 19:40:48"
                date_time_modified="2011-05-09 15:58:31"
                approved="0"
                record_id="1037">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="443.291294" avge_mass="443.5603"
                     composition="H(42) C(22) N(3) O(4) P">
            <umod:element symbol="H" number="42"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>desthiobiotin-alkyl-FP</umod:alt_name>
         <umod:alt_name>desthiobiotin-FP</umod:alt_name>
         <umod:xref>
            <umod:text>Serine Hydrolase Probes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=0842EF3A-D867-AEA2-6E77-E84116CAA87C</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Liu, Patricelli and Cravatt. (1999) Activity-based protein profiling: The serine hydrolases. Proc Natl Acad Sci USA 96:14694-14699</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Dethiobiotin-FP was designed to label the active site serine of serine hydrolases (e.g. esterases, peptidases, lipases)</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CLIP_TRAQ_2" full_name="CLIP_TRAQ_2" username_of_poster="overalllab"
                group_of_poster="users"
                date_time_posted="2006-09-15 02:25:46"
                date_time_modified="2006-10-17 18:04:46"
                approved="0"
                record_id="525">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Side reaction, low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="141.098318" avge_mass="141.1756" composition="H(12) C(6) 13C N(2) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>CLIP_TRAQ_double</umod:alt_name>
         <umod:misc_notes>CLIP-TRAQ-2 H(17) C(10) C13 N(3) O(4) is an in-house made compound that reacts with primary amines through a N-hydroxysuccinimide group leading to a 141.0983 Da mass shift (monoisotopic) in MS mode. The reporter ion in MS/MS mode can either be 113 or 114 m/z depending on the position of isotopic C13 in the molecule. (Fahlman, R. and Overall, C.M. in preparation).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="LG-Hlactam-R" full_name="Levuglandinyl - arginine hydroxylactam adduct"
                username_of_poster="alexparf"
                group_of_poster="users"
                date_time_posted="2006-04-27 18:08:11"
                date_time_modified="2006-10-17 14:08:30"
                approved="0"
                record_id="506">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="306.171876" avge_mass="306.3933"
                     composition="H(26) C(19) N(-2) O(5)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15650407</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15752459</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Chem Phys Lipids. 2005 Mar;134(1):1-20.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Salomon RG. Antioxid Redox Signal. 2005 Jan-Feb;7(1-2):185-201.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Maleimide-PEO2-Biotin" full_name="Maleimide-Biotin"
                username_of_poster="ericjohansen"
                group_of_poster="users"
                date_time_posted="2006-08-11 02:49:51"
                date_time_modified="2010-12-03 16:13:49"
                approved="0"
                record_id="522">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="525.225719" avge_mass="525.6183"
                     composition="H(35) C(23) N(5) O(7) S">
            <umod:element symbol="H" number="35"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Maleimide-PEG2-Biotin</umod:alt_name>
         <umod:xref>
            <umod:text>EZ-Link Maleimide PEOn-Biotin</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=01031005</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Sulfo-NHS-LC-LC-Biotin" full_name="Biot_LC_LC"
                username_of_poster="unimod"
                group_of_poster="admin"
                date_time_posted="2006-08-31 18:01:50"
                date_time_modified="2010-12-03 16:11:08"
                approved="0"
                record_id="523">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="452.245726" avge_mass="452.6106"
                     composition="H(36) C(22) N(4) O(4) S">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Sulfo-NHS-LC-LC-Biotin</umod:alt_name>
         <umod:xref>
            <umod:text>EZ-Link Sulfo-NHS-Biotin Reagents</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=8D38BA83-EFDC-421A-853F-E96EBA380612</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="FNEM" full_name="fluorescein-5-maleimide" username_of_poster="shure"
                group_of_poster="users"
                date_time_posted="2006-06-08 10:07:56"
                date_time_modified="2006-10-17 14:15:03"
                approved="0"
                record_id="515">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>photosensitive</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="427.069202" avge_mass="427.3625" composition="H(13) C(24) N O(7)">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="24"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:alt_name>fluorescein-NEM</umod:alt_name>
         <umod:xref>
            <umod:text>9325338</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11665566</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Thiol-Reactive Probes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://probes.invitrogen.com/media/pis/mp00003.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PropylNAGthiazoline"
                full_name="propyl-1,2-dideoxy-2\'-methyl-alpha-D-glucopyranoso-[2,1-d]-Delta2\'-thiazoline"
                username_of_poster="mmacaule"
                group_of_poster="users"
                date_time_posted="2006-05-18 18:44:52"
                date_time_modified="2006-11-14 10:35:19"
                approved="0"
                record_id="514">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="232.064354" avge_mass="232.2768" composition="H(14) C(9) N O(4) S">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15795231</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>In a recent publication (see reference), we have shown that family 84 glycoside hydrolases contain a deep pocket beneath the 2-acetamido group of its substrate (N-acetyl-glucosamine). With this strucual feature in mind, we have designed a specific inhibitor that contains a chloride group appended to the end of the propyl chain on a known inhibitor termed propyl-NAG-thiazoline. We have shown kinetically that this molecule is a potent suicide inhibitor of this enzyme famiy and now wish to know the precise residue which is acting as the nucleophile to dispace the choride atom. We have included all residues that are in the vacinity of the chloride atom that could potentially act in a nucleophilic manner.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dethiomethyl" full_name="Prompt loss of side chain from oxidised Met"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-13 15:14:55"
                date_time_modified="2006-10-13 17:02:27"
                approved="1"
                record_id="526">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="-48.003371" avge_mass="-48.1075" composition="H(-4) C(-1) S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9004526</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>More commonly seen as a neutral loss</umod:misc_notes>
      </umod:mod>
      <umod:mod title="iTRAQ4plex114" full_name="Accurate mass for 114"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-16 13:46:49"
                date_time_modified="2006-12-09 18:48:09"
                approved="0"
                record_id="532">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="144.105918" avge_mass="144.1680"
                     composition="H(12) C(5) 13C(2) N(2) 18O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="13C" number="2"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems iTRAQ(TM) multiplexed quantitation chemistry</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems Chemistry Reference Guide</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04351918.pdf</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="iTRAQ4plex115" full_name="Accurate mass for 115"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-16 13:48:16"
                date_time_modified="2006-12-09 18:47:52"
                approved="0"
                record_id="533">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="144.099599" avge_mass="144.1688"
                     composition="H(12) C(6) 13C N 15N 18O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems iTRAQ(TM) multiplexed quantitation chemistry</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems Chemistry Reference Guide</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://docs.appliedbiosystems.com/pebiodocs/04351918.pdf</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dibromo" full_name="Dibromo" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-16 14:06:38"
                date_time_modified="2006-10-16 14:06:38"
                approved="1"
                record_id="534">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="155.821022" avge_mass="157.7921" composition="H(-2) Br(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Br" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="LRGG" full_name="Ubiquitination" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-10-16 16:39:05"
                date_time_modified="2014-07-09 16:48:40"
                approved="1"
                record_id="535">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="383.228103" avge_mass="383.4460" composition="H(29) C(16) N(7) O(4)">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>Addition of LRGG</umod:alt_name>
      </umod:mod>
      <umod:mod title="CLIP_TRAQ_3" full_name="CLIP_TRAQ_3" username_of_poster="overall"
                group_of_poster=""
                date_time_posted="2006-10-17 18:08:00"
                date_time_modified="2006-10-17 18:11:03"
                approved="0"
                record_id="536">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="271.148736" avge_mass="271.2976"
                     composition="H(20) C(11) 13C N(3) O(4)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:misc_notes>CLIP_TRAQ_3 (H(20) C(11) C13 N(3) O(4) is an in-house made compound that reacts with primary amines through a N-hydroxysuccinimide group leading to a 155.1 Da mass shift (monoisotopic) in MS mode. The reporter ion in MS/MS mode can either be 127 or 128 m/z depending on the position of isotopic C13 in the molecule. (Fahlman, R. and Overall, C.M. in preparation).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CLIP_TRAQ_4" full_name="CLIP_TRAQ_4" username_of_poster="overall"
                group_of_poster=""
                date_time_posted="2006-10-17 18:09:22"
                date_time_modified="2006-10-17 18:10:05"
                approved="0"
                record_id="537">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="244.101452" avge_mass="244.2292"
                     composition="H(15) C(9) 13C N(2) O(5)">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:misc_notes>CLIP_TRAQ_4 is an in-house made compound that reacts with primary amines through a N-hydroxysuccinimide group leading to a 128.1 Da mass shift (monoisotopic) in MS mode. The reporter ion in MS/MS mode can either be 100 or 101 m/z depending on the position of isotopic C13 in the molecule. (Fahlman, R. and Overall, C.M. in preparation).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Biotin:Cayman-10141" full_name="was 15dB-biotin"
                username_of_poster="sevgh"
                group_of_poster=""
                date_time_posted="2006-10-17 18:13:45"
                date_time_modified="2010-12-03 16:08:40"
                approved="0"
                record_id="538">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="626.386577" avge_mass="626.8927"
                     composition="H(54) C(35) N(4) O(4) S">
            <umod:element symbol="H" number="54"/>
            <umod:element symbol="C" number="35"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>15-deoxy-delta 12,14-Prostaglandin J2-biotinimide</umod:alt_name>
         <umod:xref>
            <umod:text>Cayman Chemical data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.caymanchem.com/pdfs/10141.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Cayman-10013" full_name="was PGA1-biotin"
                username_of_poster="sevgh"
                group_of_poster=""
                date_time_posted="2006-10-17 18:24:06"
                date_time_modified="2010-12-03 16:07:57"
                approved="0"
                record_id="539">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="660.428442" avge_mass="660.9504"
                     composition="H(60) C(36) N(4) O(5) S">
            <umod:element symbol="H" number="60"/>
            <umod:element symbol="C" number="36"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Prostaglandin A1-biotinimide</umod:alt_name>
         <umod:xref>
            <umod:text>Cayman Chemical data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.caymanchem.com/pdfs/10013.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ala-&gt;Ser" full_name="Ala-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:07:30"
                date_time_modified="2006-11-09 10:07:30"
                approved="0"
                record_id="540">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="15.994915" avge_mass="15.9994" composition="O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Thr" full_name="Ala-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:13:43"
                date_time_modified="2006-11-09 10:13:43"
                approved="0"
                record_id="541">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="30.010565" avge_mass="30.0260" composition="H(2) C O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Asp" full_name="Ala-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:15:05"
                date_time_modified="2006-11-09 10:15:05"
                approved="0"
                record_id="542">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="43.989829" avge_mass="44.0095" composition="C O(2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Pro" full_name="Ala-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:16:03"
                date_time_modified="2006-11-09 10:16:03"
                approved="0"
                record_id="543">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="26.015650" avge_mass="26.0373" composition="H(2) C(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Gly" full_name="Ala-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:16:35"
                date_time_modified="2006-11-09 10:16:35"
                approved="0"
                record_id="544">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.015650" avge_mass="-14.0266" composition="H(-2) C(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Glu" full_name="Ala-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:19:56"
                date_time_modified="2006-11-09 10:19:56"
                approved="0"
                record_id="545">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="58.005479" avge_mass="58.0361" composition="H(2) C(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ala-&gt;Val" full_name="Ala-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:20:15"
                date_time_modified="2006-11-09 10:20:15"
                approved="0"
                record_id="546">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Phe" full_name="Cys-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:20:41"
                date_time_modified="2006-11-09 10:20:41"
                approved="0"
                record_id="547">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="44.059229" avge_mass="44.0310" composition="H(4) C(6) S(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Ser" full_name="Cys-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:21:13"
                date_time_modified="2006-11-09 10:21:13"
                approved="0"
                record_id="548">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.977156" avge_mass="-16.0656" composition="O S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Trp" full_name="Cys-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:21:37"
                date_time_modified="2006-11-09 10:21:37"
                approved="0"
                record_id="549">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="83.070128" avge_mass="83.0670" composition="H(5) C(8) N S(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Tyr" full_name="Cys-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:22:04"
                date_time_modified="2006-11-09 10:22:04"
                approved="0"
                record_id="550">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="60.054144" avge_mass="60.0304" composition="H(4) C(6) O S(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Arg" full_name="Cys-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:22:25"
                date_time_modified="2006-11-09 10:22:25"
                approved="0"
                record_id="551">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="53.091927" avge_mass="53.0428" composition="H(7) C(3) N(3) S(-1)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;Gly" full_name="Cys-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:22:43"
                date_time_modified="2006-11-09 10:22:43"
                approved="0"
                record_id="552">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-45.987721" avge_mass="-46.0916" composition="H(-2) C(-1) S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Ala" full_name="Asp-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:53:54"
                date_time_modified="2006-11-09 10:53:54"
                approved="0"
                record_id="553">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-43.989829" avge_mass="-44.0095" composition="C(-1) O(-2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;His" full_name="Asp-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:55:25"
                date_time_modified="2006-11-09 10:55:25"
                approved="0"
                record_id="554">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="22.031969" avge_mass="22.0519" composition="H(2) C(2) N(2) O(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Asn" full_name="Asp-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:55:49"
                date_time_modified="2006-11-09 10:55:49"
                approved="0"
                record_id="555">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.984016" avge_mass="-0.9848" composition="H N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Gly" full_name="Asp-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:56:52"
                date_time_modified="2006-11-09 10:56:52"
                approved="0"
                record_id="556">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-58.005479" avge_mass="-58.0361" composition="H(-2) C(-2) O(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Tyr" full_name="Asp-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:58:23"
                date_time_modified="2006-11-09 10:58:23"
                approved="0"
                record_id="557">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="48.036386" avge_mass="48.0859" composition="H(4) C(5) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Glu" full_name="Asp-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:58:44"
                date_time_modified="2006-11-09 10:58:44"
                approved="0"
                record_id="558">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asp-&gt;Val" full_name="Asp-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 10:59:02"
                date_time_modified="2006-11-09 10:59:02"
                approved="0"
                record_id="559">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.958529" avge_mass="-15.9563" composition="H(4) C O(-2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Ala" full_name="Glu-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:00:54"
                date_time_modified="2006-11-09 11:00:54"
                approved="0"
                record_id="560">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-58.005479" avge_mass="-58.0361" composition="H(-2) C(-2) O(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Gln" full_name="Glu-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:01:29"
                date_time_modified="2006-11-09 11:01:29"
                approved="0"
                record_id="561">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.984016" avge_mass="-0.9848" composition="H N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Asp" full_name="Glu-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:01:53"
                date_time_modified="2006-11-09 11:01:53"
                approved="0"
                record_id="562">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.015650" avge_mass="-14.0266" composition="H(-2) C(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Lys" full_name="Glu-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:02:15"
                date_time_modified="2006-11-09 11:02:15"
                approved="0"
                record_id="563">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.947630" avge_mass="-0.9417" composition="H(5) C N O(-2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Gly" full_name="Glu-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:02:36"
                date_time_modified="2006-11-09 11:02:36"
                approved="0"
                record_id="564">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-72.021129" avge_mass="-72.0627" composition="H(-4) C(-3) O(-2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Glu-&gt;Val" full_name="Glu-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:03:02"
                date_time_modified="2006-11-09 11:03:02"
                approved="0"
                record_id="565">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.974179" avge_mass="-29.9829" composition="H(2) O(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phe-&gt;Ser" full_name="Phe-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:03:29"
                date_time_modified="2006-11-09 11:03:29"
                approved="0"
                record_id="566">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-60.036386" avge_mass="-60.0966" composition="H(-4) C(-6) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phe-&gt;Cys" full_name="Phe-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:04:01"
                date_time_modified="2006-11-09 11:04:01"
                approved="0"
                record_id="567">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-44.059229" avge_mass="-44.0310" composition="H(-4) C(-6) S">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phe-&gt;Xle" full_name="Phe-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:05:41"
                date_time_modified="2011-06-21 15:10:27"
                approved="0"
                record_id="568">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-33.984350" avge_mass="-34.0162" composition="H(2) C(-3)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phe-&gt;Tyr" full_name="Phe-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:06:56"
                date_time_modified="2006-11-09 11:06:56"
                approved="0"
                record_id="569">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="15.994915" avge_mass="15.9994" composition="O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phe-&gt;Val" full_name="Phe-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:07:20"
                date_time_modified="2006-11-09 11:07:20"
                approved="0"
                record_id="570">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-48.000000" avge_mass="-48.0428" composition="C(-4)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Ala" full_name="Gly-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:07:51"
                date_time_modified="2006-11-09 11:07:51"
                approved="0"
                record_id="571">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Ser" full_name="Gly-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:08:13"
                date_time_modified="2006-11-09 11:08:13"
                approved="0"
                record_id="572">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="30.010565" avge_mass="30.0260" composition="H(2) C O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Trp" full_name="Gly-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:08:33"
                date_time_modified="2006-11-09 11:08:33"
                approved="0"
                record_id="573">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="129.057849" avge_mass="129.1586" composition="H(7) C(9) N">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Glu" full_name="Gly-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:08:57"
                date_time_modified="2006-11-09 11:08:57"
                approved="0"
                record_id="574">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="72.021129" avge_mass="72.0627" composition="H(4) C(3) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Val" full_name="Gly-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:09:18"
                date_time_modified="2006-11-09 11:09:18"
                approved="0"
                record_id="575">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="42.046950" avge_mass="42.0797" composition="H(6) C(3)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Asp" full_name="Gly-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:09:44"
                date_time_modified="2006-11-09 11:09:44"
                approved="0"
                record_id="576">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="58.005479" avge_mass="58.0361" composition="H(2) C(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Cys" full_name="Gly-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:10:03"
                date_time_modified="2006-11-09 11:10:03"
                approved="0"
                record_id="577">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="45.987721" avge_mass="46.0916" composition="H(2) C S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gly-&gt;Arg" full_name="Gly-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:10:23"
                date_time_modified="2006-11-09 11:10:23"
                approved="0"
                record_id="578">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="99.079647" avge_mass="99.1344" composition="H(9) C(4) N(3)">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dNIC" full_name="deuterated Nicotinic Acid"
                username_of_poster="verena-meyer"
                group_of_poster=""
                date_time_posted="2006-12-04 16:12:54"
                date_time_modified="2014-07-09 16:57:50"
                approved="0"
                record_id="698">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="109.048119" avge_mass="109.1205" composition="H 2H(3) C(6) N O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Nature Biotechnology  22, 450 - 454 (2004)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.nature.com/nbt/journal/v22/n4/abs/nbt947.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>15004565</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Anal. Chem., 2009, 81 (18), pp 7814–7822</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/ac901108g</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="His-&gt;Pro" full_name="His-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:11:29"
                date_time_modified="2006-11-09 11:11:29"
                approved="0"
                record_id="580">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-40.006148" avge_mass="-40.0241" composition="C(-1) N(-2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="His-&gt;Tyr" full_name="His-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:11:50"
                date_time_modified="2006-11-09 11:11:50"
                approved="0"
                record_id="581">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="26.004417" avge_mass="26.0340" composition="H(2) C(3) N(-2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="His-&gt;Gln" full_name="His-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:14:42"
                date_time_modified="2006-11-09 11:14:42"
                approved="0"
                record_id="582">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-9.000334" avge_mass="-9.0101" composition="H C(-1) N(-1) O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="NIC" full_name="Nicotinic Acid" username_of_poster="verena-meyer"
                group_of_poster=""
                date_time_posted="2006-12-04 16:04:56"
                date_time_modified="2014-07-09 16:57:01"
                approved="0"
                record_id="697">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="105.021464" avge_mass="105.0941" composition="H(3) C(6) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Nature Biotechnology  22, 450 - 454 (2004)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.nature.com/nbt/journal/v22/n4/abs/nbt947.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>15004565</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Anal. Chem., 2009, 81 (18), pp 7814–7822</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/ac901108g</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="His-&gt;Arg" full_name="His-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:15:26"
                date_time_modified="2006-11-09 11:15:26"
                approved="0"
                record_id="584">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="19.042199" avge_mass="19.0464" composition="H(5) N">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="His-&gt;Xle" full_name="His-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:15:51"
                date_time_modified="2011-06-21 15:10:11"
                approved="0"
                record_id="585">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-23.974848" avge_mass="-23.9816" composition="H(4) N(-2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="N" number="-2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Ala" full_name="Leu/Ile-&gt;Ala substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:33:19"
                date_time_modified="2011-06-21 15:33:19"
                approved="0"
                record_id="1125">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="-42.046950" avge_mass="-42.0797" composition="H(-6) C(-3)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Thr" full_name="Leu/Ile-&gt;Thr substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:18:09"
                date_time_modified="2011-06-21 15:29:22"
                approved="0"
                record_id="588">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-12.036386" avge_mass="-12.0538" composition="H(-4) C(-2) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Asn" full_name="Leu/Ile-&gt;Asn substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:18:31"
                date_time_modified="2011-06-21 15:29:41"
                approved="0"
                record_id="589">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="0.958863" avge_mass="0.9450" composition="H(-5) C(-2) N O">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Lys" full_name="Leu/Ile-&gt;Lys substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:18:57"
                date_time_modified="2011-06-21 15:27:59"
                approved="0"
                record_id="590">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="15.010899" avge_mass="15.0146" composition="H N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Thr" full_name="Lys-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:20:28"
                date_time_modified="2006-11-09 11:20:28"
                approved="0"
                record_id="594">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.047285" avge_mass="-27.0684" composition="H(-5) C(-2) N(-1) O">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Asn" full_name="Lys-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:20:51"
                date_time_modified="2006-11-09 11:20:51"
                approved="0"
                record_id="595">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.052036" avge_mass="-14.0696" composition="H(-6) C(-2) O">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Glu" full_name="Lys-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:21:12"
                date_time_modified="2006-11-09 11:21:12"
                approved="0"
                record_id="596">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="0.947630" avge_mass="0.9417" composition="H(-5) C(-1) N(-1) O(2)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Gln" full_name="Lys-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:21:32"
                date_time_modified="2006-11-09 11:21:32"
                approved="0"
                record_id="597">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.036386" avge_mass="-0.0431" composition="H(-4) C(-1) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Met" full_name="Lys-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:21:56"
                date_time_modified="2006-11-09 11:21:56"
                approved="0"
                record_id="598">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="2.945522" avge_mass="3.0238" composition="H(-3) C(-1) N(-1) S">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Arg" full_name="Lys-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:22:15"
                date_time_modified="2006-11-09 11:22:15"
                approved="0"
                record_id="599">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="28.006148" avge_mass="28.0134" composition="N(2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Xle" full_name="Lys-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:22:38"
                date_time_modified="2011-06-21 15:25:01"
                approved="0"
                record_id="600">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.010899" avge_mass="-15.0146" composition="H(-1) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Ser" full_name="Leu/Ile-&gt;Ser substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:23:01"
                date_time_modified="2011-06-21 15:29:50"
                approved="0"
                record_id="601">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-26.052036" avge_mass="-26.0803" composition="H(-6) C(-3) O">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Phe" full_name="Leu/Ile-&gt;Phe substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:23:22"
                date_time_modified="2011-06-21 15:28:53"
                approved="0"
                record_id="602">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="33.984350" avge_mass="34.0162" composition="H(-2) C(3)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Trp" full_name="Leu/Ile-&gt;Trp substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:23:48"
                date_time_modified="2011-06-21 15:28:22"
                approved="0"
                record_id="603">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="72.995249" avge_mass="73.0523" composition="H(-1) C(5) N">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Pro" full_name="Leu/Ile-&gt;Pro substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:24:06"
                date_time_modified="2011-06-21 15:29:13"
                approved="0"
                record_id="604">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-16.031300" avge_mass="-16.0425" composition="H(-4) C(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Val" full_name="Leu/Ile-&gt;Val substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:24:28"
                date_time_modified="2011-06-21 15:28:33"
                approved="0"
                record_id="605">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.015650" avge_mass="-14.0266" composition="H(-2) C(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;His" full_name="Leu/Ile-&gt;His substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:24:50"
                date_time_modified="2011-06-21 15:29:31"
                approved="0"
                record_id="606">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="23.974848" avge_mass="23.9816" composition="H(-4) N(2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Gln" full_name="Leu/Ile-&gt;Gln substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:25:14"
                date_time_modified="2011-06-21 15:29:03"
                approved="0"
                record_id="607">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.974514" avge_mass="14.9716" composition="H(-3) C(-1) N O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Met" full_name="Leu/Ile-&gt;Met substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:25:59"
                date_time_modified="2011-06-21 15:28:43"
                approved="0"
                record_id="608">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="17.956421" avge_mass="18.0384" composition="H(-2) C(-1) S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Arg" full_name="Leu/Ile-&gt;Arg substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:26:21"
                date_time_modified="2011-06-21 15:28:11"
                approved="0"
                record_id="609">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="43.017047" avge_mass="43.0280" composition="H N(3)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Met-&gt;Thr" full_name="Met-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:26:47"
                date_time_modified="2006-11-09 11:26:47"
                approved="0"
                record_id="610">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.992806" avge_mass="-30.0922" composition="H(-2) C(-1) O S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Met-&gt;Arg" full_name="Met-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:27:10"
                date_time_modified="2006-11-09 11:27:10"
                approved="0"
                record_id="611">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="25.060626" avge_mass="24.9896" composition="H(3) C N(3) S(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Met-&gt;Lys" full_name="Met-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:28:29"
                date_time_modified="2006-11-09 11:28:29"
                approved="0"
                record_id="613">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-2.945522" avge_mass="-3.0238" composition="H(3) C N S(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Met-&gt;Xle" full_name="Met-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:28:56"
                date_time_modified="2011-06-21 15:09:53"
                approved="0"
                record_id="614">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-17.956421" avge_mass="-18.0384" composition="H(2) C S(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Met-&gt;Val" full_name="Met-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:29:27"
                date_time_modified="2006-11-09 11:29:27"
                approved="0"
                record_id="615">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-31.972071" avge_mass="-32.0650" composition="S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Ser" full_name="Asn-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:29:57"
                date_time_modified="2006-11-09 11:29:57"
                approved="0"
                record_id="616">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.010899" avge_mass="-27.0253" composition="H(-1) C(-1) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Thr" full_name="Asn-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:34:11"
                date_time_modified="2006-11-09 11:34:11"
                approved="0"
                record_id="617">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-12.995249" avge_mass="-12.9988" composition="H N(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Lys" full_name="Asn-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:34:31"
                date_time_modified="2006-11-09 11:34:31"
                approved="0"
                record_id="618">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.052036" avge_mass="14.0696" composition="H(6) C(2) O(-1)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Tyr" full_name="Asn-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:34:56"
                date_time_modified="2006-11-09 11:34:56"
                approved="0"
                record_id="619">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="49.020401" avge_mass="49.0706" composition="H(3) C(5) N(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;His" full_name="Asn-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:35:18"
                date_time_modified="2006-11-09 11:35:18"
                approved="0"
                record_id="620">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="23.015984" avge_mass="23.0366" composition="H C(2) N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Asp" full_name="Asn-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:35:42"
                date_time_modified="2006-11-09 11:35:42"
                approved="0"
                record_id="621">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="0.984016" avge_mass="0.9848" composition="H(-1) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Asn-&gt;Xle" full_name="Asn-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:36:02"
                date_time_modified="2011-06-21 15:13:54"
                approved="0"
                record_id="622">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-0.958863" avge_mass="-0.9450" composition="H(5) C(2) N(-1) O(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Ser" full_name="Pro-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:36:26"
                date_time_modified="2006-11-09 11:36:26"
                approved="0"
                record_id="623">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-10.020735" avge_mass="-10.0379" composition="H(-2) C(-2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Ala" full_name="Pro-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:37:56"
                date_time_modified="2006-11-09 11:37:56"
                approved="0"
                record_id="624">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-26.015650" avge_mass="-26.0373" composition="H(-2) C(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;His" full_name="Pro-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:38:18"
                date_time_modified="2006-11-09 11:38:18"
                approved="0"
                record_id="625">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="40.006148" avge_mass="40.0241" composition="C N(2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Gln" full_name="Pro-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:38:40"
                date_time_modified="2006-11-09 11:38:40"
                approved="0"
                record_id="626">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="31.005814" avge_mass="31.0140" composition="H N O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Thr" full_name="Pro-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:39:02"
                date_time_modified="2006-11-09 11:39:02"
                approved="0"
                record_id="627">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="3.994915" avge_mass="3.9887" composition="C(-1) O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Arg" full_name="Pro-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:39:29"
                date_time_modified="2006-11-09 11:39:29"
                approved="0"
                record_id="628">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="59.048347" avge_mass="59.0705" composition="H(5) C N(3)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Pro-&gt;Xle" full_name="Pro-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:39:47"
                date_time_modified="2011-06-21 15:09:36"
                approved="0"
                record_id="629">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="16.031300" avge_mass="16.0425" composition="H(4) C">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;Pro" full_name="Gln-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:40:19"
                date_time_modified="2006-11-09 11:40:19"
                approved="0"
                record_id="630">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-31.005814" avge_mass="-31.0140" composition="H(-1) N(-1) O(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;Lys" full_name="Gln-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:42:17"
                date_time_modified="2006-11-09 11:42:17"
                approved="0"
                record_id="631">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="0.036386" avge_mass="0.0431" composition="H(4) C O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;Glu" full_name="Gln-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:42:38"
                date_time_modified="2006-11-09 11:42:38"
                approved="0"
                record_id="632">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="0.984016" avge_mass="0.9848" composition="H(-1) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;His" full_name="Gln-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:42:58"
                date_time_modified="2006-11-09 11:42:58"
                approved="0"
                record_id="633">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="9.000334" avge_mass="9.0101" composition="H(-1) C N O(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;Arg" full_name="Gln-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:43:25"
                date_time_modified="2006-11-09 11:43:25"
                approved="0"
                record_id="634">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="28.042534" avge_mass="28.0565" composition="H(4) C N(2) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Gln-&gt;Xle" full_name="Gln-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:43:47"
                date_time_modified="2011-06-21 15:09:23"
                approved="0"
                record_id="635">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.974514" avge_mass="-14.9716" composition="H(3) C N(-1) O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Ser" full_name="Arg-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:44:13"
                date_time_modified="2006-11-09 11:44:13"
                approved="0"
                record_id="636">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-69.069083" avge_mass="-69.1084" composition="H(-7) C(-3) N(-3) O">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Trp" full_name="Arg-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:44:36"
                date_time_modified="2006-11-09 11:44:36"
                approved="0"
                record_id="637">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="29.978202" avge_mass="30.0242" composition="H(-2) C(5) N(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Thr" full_name="Arg-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:44:59"
                date_time_modified="2006-11-09 11:44:59"
                approved="0"
                record_id="638">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-55.053433" avge_mass="-55.0818" composition="H(-5) C(-2) N(-3) O">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Pro" full_name="Arg-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:45:18"
                date_time_modified="2006-11-09 11:45:18"
                approved="0"
                record_id="639">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-59.048347" avge_mass="-59.0705" composition="H(-5) C(-1) N(-3)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Lys" full_name="Arg-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:45:37"
                date_time_modified="2006-11-09 11:45:37"
                approved="0"
                record_id="640">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-28.006148" avge_mass="-28.0134" composition="N(-2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;His" full_name="Arg-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:45:56"
                date_time_modified="2006-11-09 11:45:56"
                approved="0"
                record_id="641">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-19.042199" avge_mass="-19.0464" composition="H(-5) N(-1)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Gln" full_name="Arg-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:46:17"
                date_time_modified="2006-11-09 11:46:17"
                approved="0"
                record_id="642">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-28.042534" avge_mass="-28.0565" composition="H(-4) C(-1) N(-2) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Met" full_name="Arg-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:46:37"
                date_time_modified="2006-11-09 11:46:37"
                approved="0"
                record_id="643">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-25.060626" avge_mass="-24.9896" composition="H(-3) C(-1) N(-3) S">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Cys" full_name="Arg-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:47:00"
                date_time_modified="2006-11-09 11:47:00"
                approved="0"
                record_id="644">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-53.091927" avge_mass="-53.0428" composition="H(-7) C(-3) N(-3) S">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Xle" full_name="Arg-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:47:36"
                date_time_modified="2011-06-21 15:09:05"
                approved="0"
                record_id="645">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-43.017047" avge_mass="-43.0280" composition="H(-1) N(-3)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg-&gt;Gly" full_name="Arg-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 11:48:00"
                date_time_modified="2006-11-09 11:48:00"
                approved="0"
                record_id="646">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-99.079647" avge_mass="-99.1344" composition="H(-9) C(-4) N(-3)">
            <umod:element symbol="H" number="-9"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Phe" full_name="Ser-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:32:55"
                date_time_modified="2006-11-09 12:32:55"
                approved="0"
                record_id="647">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="60.036386" avge_mass="60.0966" composition="H(4) C(6) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Ala" full_name="Ser-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:33:14"
                date_time_modified="2006-11-09 12:33:14"
                approved="0"
                record_id="648">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.994915" avge_mass="-15.9994" composition="O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Trp" full_name="Ser-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:33:32"
                date_time_modified="2006-11-09 12:33:32"
                approved="0"
                record_id="649">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="99.047285" avge_mass="99.1326" composition="H(5) C(8) N O(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Thr" full_name="Ser-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:33:51"
                date_time_modified="2006-11-09 12:33:51"
                approved="0"
                record_id="650">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Asn" full_name="Ser-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:34:12"
                date_time_modified="2006-11-09 12:34:12"
                approved="0"
                record_id="651">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.010899" avge_mass="27.0253" composition="H C N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Pro" full_name="Ser-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:34:34"
                date_time_modified="2006-11-09 12:34:34"
                approved="0"
                record_id="652">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="10.020735" avge_mass="10.0379" composition="H(2) C(2) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Tyr" full_name="Ser-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:35:00"
                date_time_modified="2006-11-09 12:35:00"
                approved="0"
                record_id="653">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="76.031300" avge_mass="76.0960" composition="H(4) C(6)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Cys" full_name="Ser-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:35:22"
                date_time_modified="2006-11-09 12:35:22"
                approved="0"
                record_id="654">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="15.977156" avge_mass="16.0656" composition="O(-1) S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Arg" full_name="Ser-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:35:40"
                date_time_modified="2006-11-09 12:35:40"
                approved="0"
                record_id="655">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="69.069083" avge_mass="69.1084" composition="H(7) C(3) N(3) O(-1)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Xle" full_name="Ser-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:36:10"
                date_time_modified="2011-06-21 15:08:47"
                approved="0"
                record_id="656">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="26.052036" avge_mass="26.0803" composition="H(6) C(3) O(-1)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ser-&gt;Gly" full_name="Ser-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:36:34"
                date_time_modified="2006-11-09 12:36:34"
                approved="0"
                record_id="657">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-30.010565" avge_mass="-30.0260" composition="H(-2) C(-1) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Ser" full_name="Thr-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:36:57"
                date_time_modified="2006-11-09 12:36:57"
                approved="0"
                record_id="658">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.015650" avge_mass="-14.0266" composition="H(-2) C(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Ala" full_name="Thr-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:37:15"
                date_time_modified="2006-11-09 12:37:15"
                approved="0"
                record_id="659">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-30.010565" avge_mass="-30.0260" composition="H(-2) C(-1) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Asn" full_name="Thr-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:37:37"
                date_time_modified="2006-11-09 12:37:37"
                approved="0"
                record_id="660">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="12.995249" avge_mass="12.9988" composition="H(-1) N">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Lys" full_name="Thr-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:37:55"
                date_time_modified="2006-11-09 12:37:55"
                approved="0"
                record_id="661">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.047285" avge_mass="27.0684" composition="H(5) C(2) N O(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Pro" full_name="Thr-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:38:14"
                date_time_modified="2006-11-09 12:38:14"
                approved="0"
                record_id="662">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-3.994915" avge_mass="-3.9887" composition="C O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Met" full_name="Thr-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:38:34"
                date_time_modified="2006-11-09 12:38:34"
                approved="0"
                record_id="663">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="29.992806" avge_mass="30.0922" composition="H(2) C O(-1) S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Xle" full_name="Thr-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:38:56"
                date_time_modified="2011-06-21 15:25:44"
                approved="0"
                record_id="664">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="12.036386" avge_mass="12.0538" composition="H(4) C(2) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Thr-&gt;Arg" full_name="Thr-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:39:14"
                date_time_modified="2006-11-09 12:39:14"
                approved="0"
                record_id="665">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="55.053433" avge_mass="55.0818" composition="H(5) C(2) N(3) O(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Phe" full_name="Val-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:39:35"
                date_time_modified="2006-11-09 12:39:35"
                approved="0"
                record_id="666">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="48.000000" avge_mass="48.0428" composition="C(4)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Ala" full_name="Val-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:40:00"
                date_time_modified="2006-11-09 12:40:00"
                approved="0"
                record_id="667">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-28.031300" avge_mass="-28.0532" composition="H(-4) C(-2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Glu" full_name="Val-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:40:19"
                date_time_modified="2006-11-09 12:40:19"
                approved="0"
                record_id="668">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="29.974179" avge_mass="29.9829" composition="H(-2) O(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Met" full_name="Val-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:40:36"
                date_time_modified="2006-11-09 12:40:36"
                approved="0"
                record_id="669">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="31.972071" avge_mass="32.0650" composition="S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Asp" full_name="Val-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:41:04"
                date_time_modified="2006-11-09 12:41:04"
                approved="0"
                record_id="670">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="15.958529" avge_mass="15.9563" composition="H(-4) C(-1) O(2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Xle" full_name="Val-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:41:27"
                date_time_modified="2011-06-21 15:08:28"
                approved="0"
                record_id="671">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Val-&gt;Gly" full_name="Val-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:41:45"
                date_time_modified="2006-11-09 12:41:45"
                approved="0"
                record_id="672">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-42.046950" avge_mass="-42.0797" composition="H(-6) C(-3)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trp-&gt;Ser" full_name="Trp-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:42:22"
                date_time_modified="2006-11-09 12:42:22"
                approved="0"
                record_id="673">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-99.047285" avge_mass="-99.1326" composition="H(-5) C(-8) N(-1) O">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-8"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trp-&gt;Cys" full_name="Trp-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:42:46"
                date_time_modified="2006-11-09 12:42:46"
                approved="0"
                record_id="674">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-83.070128" avge_mass="-83.0670" composition="H(-5) C(-8) N(-1) S">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-8"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trp-&gt;Arg" full_name="Trp-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:43:10"
                date_time_modified="2006-11-09 12:43:10"
                approved="0"
                record_id="675">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.978202" avge_mass="-30.0242" composition="H(2) C(-5) N(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trp-&gt;Gly" full_name="Trp-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:43:29"
                date_time_modified="2006-11-09 12:43:29"
                approved="0"
                record_id="676">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-129.057849" avge_mass="-129.1586" composition="H(-7) C(-9) N(-1)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-9"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trp-&gt;Xle" full_name="Trp-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:43:49"
                date_time_modified="2011-06-21 15:08:09"
                approved="0"
                record_id="677">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-72.995249" avge_mass="-73.0523" composition="H C(-5) N(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Phe" full_name="Tyr-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:44:13"
                date_time_modified="2006-11-09 12:44:13"
                approved="0"
                record_id="678">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.994915" avge_mass="-15.9994" composition="O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Ser" full_name="Tyr-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:44:37"
                date_time_modified="2006-11-09 12:44:37"
                approved="0"
                record_id="679">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-76.031300" avge_mass="-76.0960" composition="H(-4) C(-6)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Asn" full_name="Tyr-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:44:59"
                date_time_modified="2006-11-09 12:44:59"
                approved="0"
                record_id="680">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-49.020401" avge_mass="-49.0706" composition="H(-3) C(-5) N">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;His" full_name="Tyr-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:45:22"
                date_time_modified="2006-11-09 12:45:22"
                approved="0"
                record_id="681">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-26.004417" avge_mass="-26.0340"
                     composition="H(-2) C(-3) N(2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Asp" full_name="Tyr-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:45:44"
                date_time_modified="2006-11-09 12:45:44"
                approved="0"
                record_id="682">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-48.036386" avge_mass="-48.0859" composition="H(-4) C(-5) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Cys" full_name="Tyr-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-09 12:46:03"
                date_time_modified="2006-11-09 12:46:03"
                approved="0"
                record_id="683">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-60.054144" avge_mass="-60.0304" composition="H(-4) C(-6) O(-1) S">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="BDMAPP" full_name="Mass Defect Tag on lysine e-amino"
                username_of_poster="LVSchneid"
                group_of_poster=""
                date_time_posted="2006-11-13 18:51:11"
                date_time_modified="2006-11-13 18:52:47"
                approved="0"
                record_id="684">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Artefact"
                           spec_group="5">
            <umod:misc_notes>Low efficiency</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="4">
            <umod:misc_notes>Low efficiency</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>Low efficiency</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="253.010225" avge_mass="254.1231" composition="H(12) C(11) N O Br">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="Br" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Isotope-differentiated binding energy shift tags</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.targetdiscovery.com/article.php?topic=crpc.prst&amp;story=20060321132643690</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NA-LNO2" full_name="Nitroalkylation by Nitro Linoleic Acid"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2006-11-13 18:59:35"
                date_time_modified="2006-11-13 18:59:35"
                approved="0"
                record_id="685">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="325.225309" avge_mass="325.4430" composition="H(31) C(18) N O(4)">
            <umod:element symbol="H" number="31"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>Michael addition of nitro-linoleic acid to Cys and His</umod:alt_name>
         <umod:xref>
            <umod:text>JBC 281(29):20450-63; 2006</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Reversible post-translational modification of proteins by nitrated fatty acids</umod:misc_notes>
      </umod:mod>
      <umod:mod title="NA-OA-NO2" full_name="Nitroalkylation by Nitro Oleic Acid"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2006-11-13 19:01:33"
                date_time_modified="2006-11-13 19:01:33"
                approved="0"
                record_id="686">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="327.240959" avge_mass="327.4589" composition="H(33) C(18) N O(4)">
            <umod:element symbol="H" number="33"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>Michael addition of nitro-oleic acid to Cys and His</umod:alt_name>
         <umod:xref>
            <umod:text>JBC 281(29):20450-63; 2006</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Reversible post-translational modification of proteins by nitrated fatty acids</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ICPL:2H(4)"
                full_name="Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, medium form"
                username_of_poster="suckau"
                group_of_poster=""
                date_time_posted="2006-11-13 19:05:12"
                date_time_modified="2008-09-03 15:26:54"
                approved="0"
                record_id="687">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Use when labelling post-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Use when labelling pre-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="109.046571" avge_mass="109.1188" composition="H(-1) 2H(4) C(6) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Bruker Daltonics order reference</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.bdal.de/life-science-tools/care-consumables-more/icpl-kit.html</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Schmidt A, Kellermann J, Lottspeich F (2005): A novel strategy for quantitative proteomics using isotope-coded protein labels. Proteomics 5: 4-15</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15602776</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Attention: As the digest is typically applied AFTER ICPL_light/heavy labeling, only ProteinN-term labeling and Lys-specific labeling is applied.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CarboxymethylDTT"
                full_name="Carboxymethylated DTT modification of cysteine"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2009-01-09 01:43:09"
                date_time_modified="2009-01-10 19:03:19"
                approved="0"
                record_id="894">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="210.002050" avge_mass="210.2712" composition="H(10) C(6) O(4) S(2)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18653769</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/18653769</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="iTRAQ8plex"
                full_name="Representative mass and accurate mass for 113, 114, 116 &amp; 117"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2007-01-11 09:53:13"
                date_time_modified="2011-11-21 14:10:21"
                approved="0"
                record_id="730">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="7"/>
         <umod:delta mono_mass="304.205360" avge_mass="304.3074"
                     composition="H(24) C(7) 13C(7) N(3) 15N O(3)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="13C" number="7"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems iTRAQ(TM) multiplexed quantitation chemistry</umod:alt_name>
         <umod:alt_name>AKA iTRAQ8plex:13C(7)15N(1)</umod:alt_name>
         <umod:misc_notes>Other 4 channels have the same nominal mass but slightly different exact mass. For quantitation purposes, use this entry for all channels</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(1)" full_name="13C(6) 15N(1) Silac label"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2006-11-29 15:10:53"
                date_time_modified="2007-08-22 18:30:49"
                approved="1"
                record_id="695">
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="7.017164" avge_mass="6.9493" composition="C(-6) 13C(6) N(-1) 15N">
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(9)13C(6)15N(2)" full_name="13C(6) 15N(2) (D)9 SILAC label"
                username_of_poster="striker2000"
                group_of_poster=""
                date_time_posted="2006-12-01 22:36:25"
                date_time_modified="2007-08-22 18:48:35"
                approved="0"
                record_id="696">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="17.070690" avge_mass="16.9982"
                     composition="H(-9) 2H(9) C(-6) 13C(6) N(-2) 15N(2)">
            <umod:element symbol="H" number="-9"/>
            <umod:element symbol="2H" number="9"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
         <umod:alt_name>heavy D9 lysine</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>CDNLM-6810</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.isotope.com/cil/products/displayproduct.cfm?prod_id=8635</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HNE-Delta:H(2)O" full_name="Dehydrated 4-hydroxynonenal"
                username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-01-08 18:29:46"
                date_time_modified="2007-01-21 18:27:18"
                approved="0"
                record_id="720">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="138.104465" avge_mass="138.2069" composition="H(14) C(9) O">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Liu Z, Minkler P, and Sayre L.  Chem. Res. Toxicology 2003 16 901-911</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Mass Spectroscopic Characterization of Protein Modification by 4-Hydroxy-2-(E)-nonenal and 4-Oxo-2-(E)-nonenal.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="4-ONE" full_name="4-Oxononenal (ONE)" username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-01-08 19:41:28"
                date_time_modified="2007-01-21 18:26:54"
                approved="0"
                record_id="721">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="154.099380" avge_mass="154.2063" composition="H(14) C(9) O(2)">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chemico-Biological Interactions 143-144(2003) 93-100.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Covalent adduction of nucleophilic amino acids by 4-hydroxynonenal and 4-oxononenal</umod:misc_notes>
      </umod:mod>
      <umod:mod title="O-Dimethylphosphate" full_name="O-Dimethylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-09 21:25:28"
                date_time_modified="2007-01-13 21:01:15"
                approved="0"
                record_id="723">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="107.997631" avge_mass="108.0331" composition="H(5) C(2) O(3) P">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Fidder, Hulst, Noort, Ruiter, van der Schans, Benschop and Langenberg; Retrospective detection of exposure to organophosphorus anti-cholinesterases:  Mass spectrometric analysis of phosphylated human butyrylcholinestease.  Chem. Res. Toxicol. 15, 582-590 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="O-Methylphosphate" full_name="O-Methylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-09 21:35:38"
                date_time_modified="2007-01-21 18:13:01"
                approved="0"
                record_id="724">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="93.981981" avge_mass="94.0065" composition="H(3) C O(3) P">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Main;  Mode of action of anticholnesterases.  Pharmac Ther 6, 579-628 (1979)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by auto-catalytic dealkylation of the O-Dimethylphosphate adduct.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Diethylphosphate" full_name="O-Diethylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-09 21:44:04"
                date_time_modified="2011-12-05 16:15:16"
                approved="0"
                record_id="725">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="136.028931" avge_mass="136.0862" composition="H(9) C(4) O(3) P">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Zhang, D. M.; Liu, H. X.; Zhang, S. S.; Chen, X. L.; Li, S. F.; Zhang, C. L.; Hu, X. M.; Bi, K. S.; Chen, X. H.; Jiang, Y. Y. An effective method for de novo peptide sequencing based on phosphorylation strategy and mass spectrometry. Talanta 2011, 84, 614-622.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Grigoryan, Li, Xue, Grigoryan, Schopfer and Lockridge; Mass spectral characterization of organophosphate-labeled lysine in peptides.  Analytical Biochemistry 394, 92-100 (2009)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Fidder, Hulst, Noort, Ruiter, van der Schans, Benschop and Langenberg; Retrospective detection of exposure to organophosphorus anti-cholinesterases:  Mass spectrometric analysis of phosphylated human butyrylcholinestease.  Chem. Res. Toxicol. 15, 582-590 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ethylphosphate" full_name="O-Ethylphosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-09 21:46:17"
                date_time_modified="2011-12-05 16:15:47"
                approved="0"
                record_id="726">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="107.997631" avge_mass="108.0331" composition="H(5) C(2) O(3) P">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Wang, F.; Fu, H.; Jiang, Y. Y.; Zhao, Y. F. A Picomole-Scale Method for Rapid Peptide Sequencing Through Convenient and Efficient N-Terminal Phosphorylation and Electrospray Ionization Mass Spectrometry. J. Am. Soc. Mass Spectrom. 2006, 17, 995-999.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Main;  Mode of action of anticholnesterases.  Pharmac Ther 6, 579-628 (1979)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by auto-catalytic dealkylation of the O-Diethylphosphate adduct.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="O-pinacolylmethylphosphonate"
                full_name="O-pinacolylmethylphosphonylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-10 16:04:46"
                date_time_modified="2010-04-29 08:38:50"
                approved="0"
                record_id="727">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:delta mono_mass="162.080967" avge_mass="162.1666" composition="H(15) C(7) O(2) P">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Fidder, Hulst, Noort, Ruiter, van der Schans, Benschop and Langenberg; Retrospective detection of exposure to organophosphorus anti-cholinesterases:  Mass spectrometric analysis of phosphylated human butyrylcholinestease.  Chem. Res. Toxicol. 15, 582-590 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methylphosphonate" full_name="Methylphosphonylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-10 16:07:37"
                date_time_modified="2007-01-21 18:11:36"
                approved="0"
                record_id="728">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="77.987066" avge_mass="78.0071" composition="H(3) C O(2) P">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Main;  Mode of action of anticholnesterases.  Pharmac Ther 6, 579-628 (1979)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by auto-catalytic dealkylation of either the O-pinacolylmethylphosphonate adduct, or the O-isopropylmethylphosphonate adduct.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="O-Isopropylmethylphosphonate"
                full_name="O-Isopropylmethylphosphonylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2007-01-10 16:10:55"
                date_time_modified="2007-01-13 21:02:02"
                approved="0"
                record_id="729">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="120.034017" avge_mass="120.0868" composition="H(9) C(4) O(2) P">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Fidder, Hulst, Noort, Ruiter, van der Schans, Benschop and Langenberg; Retrospective detection of exposure to organophosphorus anti-cholinesterases:  Mass spectrometric analysis of phosphylated human butyrylcholinestease.  Chem. Res. Toxicol. 15, 582-590 (2002)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="iTRAQ8plex:13C(6)15N(2)"
                full_name="Accurate mass for 115, 118, 119 &amp; 121"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2007-01-11 09:56:21"
                date_time_modified="2007-01-13 20:59:54"
                approved="0"
                record_id="731">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="304.199040" avge_mass="304.3081"
                     composition="H(24) C(8) 13C(6) N(2) 15N(2) O(3)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems iTRAQ(TM) multiplexed quantitation chemistry</umod:alt_name>
         <umod:misc_notes>Other 4 channels have the same nominal mass but slightly different exact mass. For quantitation purposes, use iTRAQ8plex for all channels</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DTT_ST" full_name="Dithiothreitol (DTT)"
                username_of_poster="stephenaw777"
                group_of_poster=""
                date_time_posted="2007-02-10 00:00:43"
                date_time_modified="2007-02-11 19:39:11"
                approved="0"
                record_id="735">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>The addition of DTT adds 136.2 not 154.2 to Serine due to loss of water in reaction</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>The addition of DTT adds 136.2 not 154.2 to Threonine due to loss of water in reaction</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="136.001656" avge_mass="136.2357" composition="H(8) C(4) O S(2)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:alt_name>threo-1,4-dimercaptobutane-2,3-diol</umod:alt_name>
         <umod:alt_name>Cleland's reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Methods Enzymol. 2006;415:113-33.  Links rnIdentification of O-GlcNAc sites on proteins.Whelan SA, Hart GW.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>17116471</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Mol Cell Proteomics. 2002 Oct;1(10):791-804.  rnMapping sites of O-GlcNAc modification using affinity tags for serine and threonine post-translational modifications.Wells L, Vosseller K, Cole RN, Cronshaw JM, Matunis MJ, Hart GW.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>12438562</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Proteomics. 2005 Feb;5(2):388-98.  Links rnQuantitative analysis of both protein expression and serine / threonine post-translational modifications through stable isotope labeling with dithiothreitol.Vosseller K, Hansen KC, Chalkley RJ, Trinidad JC, Wells L, Hart GW, Burlingame AL.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>15648052</umod:url>
         </umod:xref>
         <umod:misc_notes>Beta-elimination and Michael addition of dithiothreitol (DTT) to serine and threonine adds a weight of approximately 136.2.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ethanolamine" full_name="Carboxyl modification with ethanolamine"
                username_of_poster="overalllab"
                group_of_poster=""
                date_time_posted="2007-01-31 22:04:44"
                date_time_modified="2012-11-01 12:02:56"
                approved="0"
                record_id="734">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:delta mono_mass="43.042199" avge_mass="43.0678" composition="H(5) C(2) N">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>2</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Carbodiimide mediated blocking of free carboxylic acids (Asp/Glu sidechains and C-termini) with ethanolamine; reaction yields an amide-bond between the carboxylic acid of the peptide/protein and the primary amine of ethanolamine; reaction irreversibly modifies carboxylic acids. Shown above is the composition of the mass adduct, after substraction of water.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="TMT6plex" full_name="Sixplex Tandem Mass Tag"
                username_of_poster="JUergen.schaefer"
                group_of_poster=""
                date_time_posted="2007-03-01 13:44:23"
                date_time_modified="2011-11-25 11:11:19"
                approved="0"
                record_id="737">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6"/>
         <umod:delta mono_mass="229.162932" avge_mass="229.2634"
                     composition="H(20) C(8) 13C(4) N 15N O(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:alt_name>Tandem Mass Tag sixplex labelling kit Proteome Sciences</umod:alt_name>
         <umod:xref>
            <umod:text>Juergen.Schaefer@Proteomics.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Sixplex-TMT reagents 6TMT-126, 6TMT-127, 6TMT-128, 6TMT-129, 6TMT-130, 6TMT-131 Masses of the TMT fragment ions to be quantified:126.1283 127.1316 128.1350 129.1383 130.1417 131.1387</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DTT_C" full_name="Dithiothreitol (DTT) on Cys"
                username_of_poster="stephenaw777"
                group_of_poster=""
                date_time_posted="2007-02-10 03:12:41"
                date_time_modified="2007-02-11 19:38:59"
                approved="0"
                record_id="736">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="120.024500" avge_mass="120.1701" composition="H(8) C(4) O(2) S">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Cleland's reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Methods Enzymol. 2006;415:113-33.  Links rnIdentification of O-GlcNAc sites on proteins.Whelan SA, Hart GW.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>17116471</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Mol Cell Proteomics. 2006 May;5(5):923-34. Epub 2006 Feb 1.  Links rnO-linked N-acetylglucosamine proteomics of postsynaptic density preparations using lectin weak affinity chromatography and mass spectrometry.Vosseller K, Trinidad JC, Chalkley RJ, Specht CG, Thalhammer A, Lynn AJ, Snedecor JO, Guan S, Medzihradszky KF, Maltby DA, Schoepfer R, Burlingame AL.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>16452088</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Mol Cell Proteomics. 2002 Oct;1(10):791-804.  Mapping sites of O-GlcNAc modification using affinity tags for serine and threonine post-translational modifications.Wells L, Vosseller K, Cole RN, Cronshaw JM, Matunis MJ, Hart GW.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>12438562</umod:url>
         </umod:xref>
         <umod:misc_notes>When the beta-elimination and Michael addition of dithiothreitol (DTT) (BEMAD) reaction is used with alkylated cysteine a sulfur group is lost leaving the addition of approximately 120.2 in the chemical reaction.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="TMT2plex" full_name="Duplex Tandem Mass Tag"
                username_of_poster="JUergen.schaefer"
                group_of_poster=""
                date_time_posted="2007-03-01 13:53:36"
                date_time_modified="2011-11-25 11:12:57"
                approved="0"
                record_id="738">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6"/>
         <umod:delta mono_mass="225.155833" avge_mass="225.2921"
                     composition="H(20) C(11) 13C N(2) O(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Tandem Mass Tag Duplex labelling kit Proteome Sciences</umod:alt_name>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:xref>
            <umod:text>Juergen.Schaefer@Proteomics.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Duplex-TMT reagents 2TMT-126, 2TMT-127 Masses of the TMT fragment ions to be quantified: 126.1283 127.1316</umod:misc_notes>
      </umod:mod>
      <umod:mod title="TMT" full_name="Native Tandem Mass Tag"
                username_of_poster="JUergen.schaefer"
                group_of_poster=""
                date_time_posted="2007-03-02 09:29:50"
                date_time_modified="2011-11-25 11:15:14"
                approved="0"
                record_id="739">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6"/>
         <umod:delta mono_mass="224.152478" avge_mass="224.2994" composition="H(20) C(12) N(2) O(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:xref>
            <umod:text>Juergen.Schaefer@Proteomics.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This modification describes the \"native\" TMT Reagent without isotopic label.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ExacTagThiol" full_name="ExacTag Thiol label mass for 2-4-7-10 plex"
                username_of_poster="cparman"
                group_of_poster=""
                date_time_posted="2007-03-02 17:24:48"
                date_time_modified="2007-03-03 18:28:20"
                approved="0"
                record_id="740">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="972.365219" avge_mass="972.7268"
                     composition="H(50) C(23) 13C(12) N(8) 15N(6) O(18)">
            <umod:element symbol="H" number="50"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="13C" number="12"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="15N" number="6"/>
            <umod:element symbol="O" number="18"/>
         </umod:delta>
         <umod:alt_name>PerkinElmer ExacTag Thiol kit</umod:alt_name>
         <umod:xref>
            <umod:text>PerkinElmer ExacTag product page</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.perkinelmer.com/exactag</umod:url>
         </umod:xref>
         <umod:misc_notes>Accurate mass for Exactag Thiol labels</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ExacTagAmine" full_name="ExacTag Amine label mass for 2-4-7-10 plex"
                username_of_poster="cparman"
                group_of_poster=""
                date_time_posted="2007-03-02 17:28:02"
                date_time_modified="2007-05-02 14:15:44"
                approved="0"
                record_id="741">
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="1046.347854" avge_mass="1046.8285"
                     composition="H(52) C(25) 13C(12) N(8) 15N(6) O(19) S">
            <umod:element symbol="H" number="52"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="13C" number="12"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="15N" number="6"/>
            <umod:element symbol="O" number="19"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>PerkinElmer ExacTag Amine kit</umod:alt_name>
         <umod:xref>
            <umod:text>PerkinElmer ExacTag product page</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.perkinelmer.com/exactag</umod:url>
         </umod:xref>
         <umod:misc_notes>Accurate mass for Exactag Amine labels. Includes the mass of the conjugation reagent</umod:misc_notes>
      </umod:mod>
      <umod:mod title="NO_SMX_SEMD"
                full_name="Nitroso Sulfamethoxazole Sulphenamide thiol adduct"
                username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-04-17 23:28:29"
                date_time_modified="2007-04-21 16:55:48"
                approved="0"
                record_id="744">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="252.044287" avge_mass="252.2697"
                     composition="H(10) C(10) N(3) O(3) S">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Naisbitt, D. J., O'Neill, P. M., Pirohamed, M., and Park, B. K.  1996.  Bioorganic and Medicinal Chemistry Letters 6(13):1511-1516.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Synthesis and Reactions of Nitroso Sulphamethoxazole with Biological Nucleophiles: Implications for Immune Mediated Toxicity.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="4-ONE+Delta:H(-2)O(-1)"
                full_name="Dehydrated 4-Oxononenal Michael adduct"
                username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-03-21 21:21:34"
                date_time_modified="2007-04-08 18:56:36"
                approved="0"
                record_id="743">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="136.088815" avge_mass="136.1910" composition="H(12) C(9) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Liu. Z., Minkler, P. E., and Sayre, L. M.  Chem. Res. Toxico. 2003, 16, 901-911.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Mass Spectorscopic Characterization of Protein Modification by 4-hydroxy-2-(E)-nonenal and 4-oxo-2-(E)-nonenal</umod:misc_notes>
      </umod:mod>
      <umod:mod title="NO_SMX_SMCT"
                full_name="Nitroso Sulfamethoxazole semimercaptal thiol adduct"
                username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-04-18 21:37:48"
                date_time_modified="2007-04-21 16:56:19"
                approved="0"
                record_id="745">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="268.039202" avge_mass="268.2691"
                     composition="H(10) C(10) N(3) O(4) S">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Naisbitt, D. J., O'Neill, P. M., Pirohamed, M., and Park, B. K.  1996.  Bioorganic and Medicinal Chemistry Letters 6(13):1511-1516.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Synthesis and Reactions of Nitroso Sulphamethoxazole with Biological Nucleophiles: Implications for Immune Mediated Toxicity.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="NO_SMX_SIMD"
                full_name="Nitroso Sulfamethoxazole Sulfinamide thiol adduct"
                username_of_poster="stewartb"
                group_of_poster=""
                date_time_posted="2007-04-18 21:39:11"
                date_time_modified="2007-04-21 16:56:07"
                approved="0"
                record_id="746">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="267.031377" avge_mass="267.2612"
                     composition="H(9) C(10) N(3) O(4) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Naisbitt, D. J., O'Neill, P. M., Pirohamed, M., and Park, B. K.  1996.  Bioorganic and Medicinal Chemistry Letters 6(13):1511-1516.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Synthesis and Reactions of Nitroso Sulphamethoxazole with Biological Nucleophiles: Implications for Immune Mediated Toxicity.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Malonyl" full_name="Malonylation of C and S residues"
                username_of_poster="massy"
                group_of_poster=""
                date_time_posted="2007-05-17 14:17:42"
                date_time_modified="2007-05-25 18:34:43"
                approved="0"
                record_id="747">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="86.000394" avge_mass="86.0462" composition="H(2) C(3) O(3)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="3sulfo"
                full_name="derivatization by N-term modification using 3-Sulfobenzoic succinimidyl ester"
                username_of_poster="MaxWis"
                group_of_poster=""
                date_time_posted="2007-05-31 10:15:48"
                date_time_modified="2007-06-24 19:58:07"
                approved="0"
                record_id="748">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="183.983029" avge_mass="184.1693" composition="H(4) C(7) O(4) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="trifluoro" full_name="trifluoroleucine replacement of leucine"
                username_of_poster="UKMSF"
                group_of_poster=""
                date_time_posted="2007-06-13 17:10:33"
                date_time_modified="2007-06-24 19:56:32"
                approved="0"
                record_id="750">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="53.971735" avge_mass="53.9714" composition="H(-3) F(3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="F" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="TNBS" full_name="tri nitro benzene" username_of_poster="DelphineP"
                group_of_poster=""
                date_time_posted="2007-06-21 13:36:03"
                date_time_modified="2007-06-24 19:58:58"
                approved="0"
                record_id="751">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="210.986535" avge_mass="211.0886" composition="H C(6) N(3) O(6)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Biotin-phenacyl"
                full_name="Alkylation by biotinylated form of phenacyl bromide"
                username_of_poster="Sandeep"
                group_of_poster=""
                date_time_posted="2007-09-14 23:07:12"
                date_time_modified="2007-10-03 15:42:46"
                approved="0"
                record_id="774">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="626.263502" avge_mass="626.7270"
                     composition="H(38) C(29) N(8) O(6) S">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="29"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>4-bromophenacyl bromide [99-73-0]</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>428399</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>phenacyl bromide conjugated with a linker and biotin tag, details not published yet</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DTT_C:2H(6)"
                full_name="Isotopically labeled Dithiothreitol (DTT) modification of cysteines"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2007-07-10 20:44:56"
                date_time_modified="2007-07-10 21:10:28"
                approved="0"
                record_id="764">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="126.062161" avge_mass="126.2071"
                     composition="H(2) 2H(6) C(4) O(2) S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Cleland's reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Vosseller K, Hansen KC, Chalkley RJ, Trinidad JC, Wells L, Hart GW, Burlingame AL. Proteomics. 2005 5(2):388-98. Quantitative analysis of both protein expression and serine / threonine post-translational modifications through stable isotope labeling with dithiothreitol.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15648052</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Can be used for quantitative analysis of cysteine-containing peptides. Same reaction can be used for quantitative analysis of O-linked post-translational modifications to serines and threonines, but then the modification is 16 Da more in mass; i.e. isotopically labeled reagent adds 142 Da in mass.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="lapachenole" full_name="lapachenole photochemically added to cysteine"
                username_of_poster="hmfales"
                group_of_poster=""
                date_time_posted="2007-08-17 22:22:15"
                date_time_modified="2007-09-07 16:52:37"
                approved="0"
                record_id="771">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Simple cyclic compound C16H16O2 adds to cysteine forming fluorescent derivative.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="240.115030" avge_mass="240.2970" composition="H(16) C(16) O(2)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochemistry 2005 vol 44 pp 1833-1845</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/bi048228c</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(5)" full_name="13C(5) Silac label" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2007-08-22 18:36:11"
                date_time_modified="2007-08-22 18:36:11"
                approved="1"
                record_id="772">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Result of Arg to Pro conversion of 13C(6) labelled Arg</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="5.016774" avge_mass="4.9633" composition="C(-5) 13C(5)">
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="13C" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="maleimide" full_name="maleimide" username_of_poster="mjayson"
                group_of_poster=""
                date_time_posted="2007-09-05 23:31:52"
                date_time_modified="2007-09-06 11:28:09"
                approved="0"
                record_id="773">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="97.016378" avge_mass="97.0721" composition="H(3) C(4) N O(2)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="IDEnT" full_name="Isotope Distribution Encoded Tag"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2007-07-10 20:14:50"
                date_time_modified="2007-07-15 20:04:29"
                approved="0"
                record_id="762">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="214.990469" avge_mass="216.0640" composition="H(7) C(9) N O Cl(2)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="Cl" number="2"/>
         </umod:delta>
         <umod:alt_name>2,4-dichlorobenzylcarbamidomethyl</umod:alt_name>
         <umod:xref>
            <umod:text>Analytical Chemistry (2000) 72 6 1112-1118</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>10740847</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Modified peptides identified by isotope pattern.  Restriction to cysteine-containing peptides combined with high mass accuracy allows peptide identification.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DTT_ST:2H(6)"
                full_name="Isotopically labeled Dithiothreitol (DTT) modification of serines or threonines"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2007-07-10 20:34:46"
                date_time_modified="2007-07-10 21:11:44"
                approved="0"
                record_id="763">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="142.039317" avge_mass="142.2727"
                     composition="H(2) 2H(6) C(4) O S(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:alt_name>Cleland's reagent</umod:alt_name>
         <umod:xref>
            <umod:text>15648052</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Vosseller K, Hansen KC, Chalkley RJ, Trinidad JC, Wells L, Hart GW, Burlingame AL. Proteomics. 2005 5(2):388-98.  Quantitative analysis of both protein expression and serine / threonine post-translational modifications through stable isotope labeling with dithiothreitol.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Can be used for quantitative analysis of O-linked post-translational modifications.  Same reaction can be used for quantitative analysis of cysteine-containing peptides, but then the modification is 16 Da less in mass; i.e. isotopically labeled reagent adds 126 Da in mass.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Met-loss"
                full_name="Removal of initiator methionine from protein N-terminus"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2007-07-10 22:40:00"
                date_time_modified="2007-07-15 20:01:35"
                approved="0"
                record_id="765">
         <umod:specificity hidden="1" site="M" position="Protein N-term" classification="Co-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-131.040485" avge_mass="-131.1961"
                     composition="H(-9) C(-5) N(-1) O(-1) S(-1)">
            <umod:element symbol="H" number="-9"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochemistry (1987) 26 8242-8246</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>3327521</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>N-terminal initiator methionine is removed by a methionine aminopeptidase from proteins where the residue following the methionine is Ala, Cys, Gly, Pro, Ser, Thr or Val.  This is generally the final N-terminal state for proteins where the following residue was a Cys, Pro or Val.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Met-loss+Acetyl"
                full_name="Removal of initiator methionine from protein N-terminus, then acetylation of the new N-terminus"
                username_of_poster="chalkley"
                group_of_poster=""
                date_time_posted="2007-07-10 22:57:12"
                date_time_modified="2007-07-15 20:01:06"
                approved="0"
                record_id="766">
         <umod:specificity hidden="1" site="M" position="Protein N-term" classification="Co-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-89.029920" avge_mass="-89.1594"
                     composition="H(-7) C(-3) N(-1) S(-1)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>3327521</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Biochemistry (1987) 26 8242-8246</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The N-terminal initiator methionine is removed by a methionine aminopeptidase from proteins whose residue following the methionine is Ala, Cys, Gly, Pro, Ser, Thr or Val. Proteins whose following residue was Ala, Gly, Ser or Thr are then acetylated by an N(alpha)-acetyltransferase on the new N-terminus.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Menadione-HQ" full_name="Menadione hydroquinone derivative"
                username_of_poster="catsriku"
                group_of_poster=""
                date_time_posted="2007-07-12 07:35:07"
                date_time_modified="2007-07-15 20:05:56"
                approved="0"
                record_id="767">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="172.052430" avge_mass="172.1800" composition="H(8) C(11) O(2)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15939799</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carboxymethyl:13C(2)"
                full_name="Iodoacetic acid derivative w/ 13C label"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2007-09-18 19:26:42"
                date_time_modified="2008-06-22 12:00:27"
                approved="0"
                record_id="775">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="60.012189" avge_mass="60.0214" composition="H(2) 13C(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="13C" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Carboxymethylation w/ 13C label</umod:alt_name>
         <umod:xref>
            <umod:text>B. Schilling, C.B. Yoo, C.J. Collins, B.W. Gibson, Determining Cysteine Oxidation Status Using Differential Alkylation, Int. J. Mass Spectrom., 2004, 236 (1-3), 117-121</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1016/j.ijms.2004.06.004</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NEM:2H(5)" full_name="D5 N-ethylmaleimide on cysteines"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2007-09-18 19:49:39"
                date_time_modified="2007-09-28 10:37:50"
                approved="0"
                record_id="776">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="130.079062" avge_mass="130.1561"
                     composition="H(2) 2H(5) C(6) N O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>CysNEM D5</umod:alt_name>
         <umod:xref>
            <umod:text>reaction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemistry.ucsc.edu/~fink/231/Image118.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12777388</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11813307</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Gly-loss+Amide"
                full_name="Enzymatic glycine removal leaving an amidated C-terminus"
                username_of_poster="timothyr"
                group_of_poster=""
                date_time_posted="2008-02-06 09:33:39"
                date_time_modified="2010-07-14 23:15:49"
                approved="0"
                record_id="822">
         <umod:specificity hidden="1" site="G" position="Any C-term" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-58.005479" avge_mass="-58.0361" composition="H(-2) C(-2) O(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="O" number="-2"/>
         </umod:delta>
         <umod:alt_name>Amidation requires presence of glycine at peptide terminus</umod:alt_name>
         <umod:xref>
            <umod:text>Richmond, T., Baggerman, G., Vandekerckhove, T., Menschaert, G., Husson, S., Verleyen, P., Schoofs, L., Van Criekinge, W. (2008). Bioinformatic Strategies for More Complete and Accurate Identification of Neuropeptides. . ASMS Conference on Mass Spectrometry. Denver, Colorado, USA, June 1-5 2008.</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Bradbury, A.F. and D.G. Smyth, Peptide amidation. Trends Biochem Sci, 1991. 16(3): p. 112-5.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="TMPP-Ac"
                full_name="tris(2,4,6-trimethoxyphenyl)phosphonium acetic acid N-hydroxysuccinimide ester derivative"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2008-02-20 14:12:31"
                date_time_modified="2009-05-13 18:21:27"
                approved="0"
                record_id="827">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="572.181134" avge_mass="572.5401" composition="H(33) C(29) O(10) P">
            <umod:element symbol="H" number="33"/>
            <umod:element symbol="C" number="29"/>
            <umod:element symbol="O" number="10"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Weibin Chen et. al., Anal. Chem.2007, 79,1583-1590</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ac061670b</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Sadagopan, N. and Watson, J. T., Journal of the American Society For Mass Spectrometry 11 107-119 (2000)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>The formula has been reduced from H(34) to H(33) on 13 May 2009 so as to give correct observed m/z values. The charge on the TMPP means that ions have one less proton than would be expected</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:13C(6)+GG" full_name="13C6 labeled ubiquitinylation residue"
                username_of_poster="glick2"
                group_of_poster=""
                date_time_posted="2007-12-02 22:45:39"
                date_time_modified="2014-07-09 16:53:01"
                approved="0"
                record_id="799">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="120.063056" avge_mass="120.0586"
                     composition="H(6) C(-2) 13C(6) N(2) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/pr0255708</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Peng J, Schwartz D, Elias JE, Thoreen CC, Cheng D, Marsischky G, Roelofs J, Finley D, Gygi SP.

Nat Biotechnol. 2003 Aug;21(8):921-6</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1038/nbt849</umod:url>
         </umod:xref>
         <umod:misc_notes>The two glycine residues left on SILAC labeled ubiquitinylated lysine after tryptic digestion</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Arg-&gt;Npo" full_name="Arginine replacement by Nitropyrimidyl ornithine"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2008-04-10 15:35:22"
                date_time_modified="2008-04-21 18:30:45"
                approved="0"
                record_id="837">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="80.985078" avge_mass="81.0297" composition="H(-1) C(3) N O(2)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>JBC 258(1) 203-207 1983</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.jbc.org/cgi/reprint/258/1/203.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(4)+Acetyl" full_name="Acetyl 4,4,5,5-D4 Lysine"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2008-03-24 17:25:15"
                date_time_modified="2008-04-02 10:17:08"
                approved="0"
                record_id="834">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Both isotopiclabel and post translational mod</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="46.035672" avge_mass="46.0613" composition="H(-2) 2H(4) C(2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Acetyl_K4</umod:alt_name>
         <umod:misc_notes>For SILAC experiments, + PTM</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Pentylamine"
                full_name="Labeling transglutaminase substrate on glutamine side chain"
                username_of_poster="mengyi"
                group_of_poster=""
                date_time_posted="2007-12-05 11:08:02"
                date_time_modified="2007-12-14 17:52:16"
                approved="0"
                record_id="801">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="85.089149" avge_mass="85.1475" composition="H(11) C(5) N">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21345" full_name="was PentylamineBiotin"
                username_of_poster="mengyi"
                group_of_poster=""
                date_time_posted="2007-12-03 13:56:58"
                date_time_modified="2010-12-03 16:06:50"
                approved="0"
                record_id="800">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="311.166748" avge_mass="311.4429"
                     composition="H(25) C(15) N(3) O(2) S">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Used for labeling glutamine-donor substrate of transglutaminase</umod:alt_name>
         <umod:xref>
            <umod:text>Pierce EZ-Link Pentylamine-Biotin</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=01031206</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dihydroxyimidazolidine" full_name="Dihydroxy methylglyoxal adduct"
                username_of_poster="kimzey"
                group_of_poster=""
                date_time_posted="2008-03-04 00:00:29"
                date_time_modified="2008-05-22 00:32:41"
                approved="0"
                record_id="830">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="72.021129" avge_mass="72.0627" composition="H(4) C(3) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Mass. Spectrom.  2007; 42:89-100.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.1144</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DFDNB" full_name="Addition of DFDNB crosslinker"
                username_of_poster="Larsenmarsen"
                group_of_poster=""
                date_time_posted="2008-02-13 15:35:40"
                date_time_modified="2008-03-05 16:48:47"
                approved="0"
                record_id="825">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="203.998263" avge_mass="204.0879"
                     composition="H(2) C(6) N(2) O(4) F(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="F" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chen, X., et al. (1999). Anal. Biochem. 273, 192-203.</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/products/browse.cfm?fldID=02030220</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Kornblatt, J.A. and Lake, D.F. (1980). Crosslinking of cytochrome oxidase subunits with difluorodinitrobenzene. Can J. Biochem. 58, 219-224.</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/products/browse.cfm?fldID=02030220</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cy3b-maleimide" full_name="fluorescent dye that labels cysteines"
                username_of_poster="kfinan"
                group_of_poster=""
                date_time_posted="2008-02-01 16:03:09"
                date_time_modified="2012-09-14 23:51:19"
                approved="0"
                record_id="821">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="682.246120" avge_mass="682.7852"
                     composition="H(38) C(37) N(4) O(7) S">
            <umod:element symbol="H" number="38"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Cy3b meleimide reacted with Cysteine</umod:alt_name>
         <umod:alt_name>Formula requires confirmation</umod:alt_name>
         <umod:xref>
            <umod:text>GE Life Science data sheet</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>https://www.gelifesciences.com/gehcls_images/GELS/Related%20Content/Files/1314742967685/litdocPA63100PL_Rev_C_2006_web_20110831004625.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Article describing design of Cy3B</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.springerlink.com/content/q3u3271467573733/</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hex1HexNAc1" full_name="Hex1HexNAc1" username_of_poster="julienjardin"
                group_of_poster=""
                date_time_posted="2007-10-12 13:16:23"
                date_time_modified="2011-11-21 14:03:42"
                approved="0"
                record_id="793">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="3"/>
         <umod:delta mono_mass="365.132196" avge_mass="365.3331" composition="Hex HexNAc">
            <umod:element symbol="H" number="23"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Saito T., Itoh T.; Journal of dairy Science, 75 (1992). p1768.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="AEC-MAEC:2H(4)" full_name="deuterium cysteamine modification to S or T"
                username_of_poster="zwang23"
                group_of_poster=""
                date_time_posted="2007-10-03 19:41:19"
                date_time_modified="2007-10-08 13:44:02"
                approved="0"
                record_id="792">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="63.044462" avge_mass="63.1580" composition="H 2H(4) C(2) N O(-1) S">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="BMOE" full_name="Addition of BMOE crosslinker"
                username_of_poster="Larsenmarsen"
                group_of_poster=""
                date_time_posted="2008-02-13 15:28:55"
                date_time_modified="2008-03-05 16:47:02"
                approved="0"
                record_id="824">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="220.048407" avge_mass="220.1815" composition="H(8) C(10) N(2) O(4)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chen, L.L., Rosa, J.J., Turner, S. and Pepinsky, R.B. (1991). Production of multimeric forms of CD4 through a sugar-based crosslinking strategy. J. Biol. Chem. 266(27), 18237-18243</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=02030208</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21360" full_name="was Biotin-PEO4-hydrazide"
                username_of_poster="MCole18"
                group_of_poster=""
                date_time_posted="2007-12-12 15:23:23"
                date_time_modified="2010-12-03 16:05:51"
                approved="0"
                record_id="811">
         <umod:specificity hidden="1" site="C-term" position="Anywhere"
                           classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>hydrazide reacts at any activated carboxyl group</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="487.246455" avge_mass="487.6134"
                     composition="H(37) C(21) N(5) O(6) S">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="21"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Pierce EZ link biotin hydrazide prod no. 21360</umod:alt_name>
         <umod:xref>
            <umod:text>Pierce product page</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/products/browse.cfm?fldID=C4FE82D4-DD06-493C-8EC4-9C1D7F83211B</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)+Acetyl" full_name="Acetyl 13C(6) Silac label"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2008-03-24 17:33:44"
                date_time_modified="2008-04-02 10:14:57"
                approved="0"
                record_id="835">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>SILAC and PTM</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="48.030694" avge_mass="47.9926" composition="H(2) C(-4) 13C(6) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ong, S-E, I. Kratchmarova, and M. Mann (2003). J Proteome Research 2: 173-181</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(2)+Acetyl" full_name="Acetyl_13C(6) 15N(2) Silac label"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2008-03-24 17:35:52"
                date_time_modified="2008-04-02 10:13:59"
                approved="0"
                record_id="836">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="50.024764" avge_mass="49.9794"
                     composition="H(2) C(-4) 13C(6) N(-2) 15N(2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Acetyl_heavy lysine</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="EQIGG" full_name="Sumo mutant Smt3-WT tail following trypsin digestion"
                username_of_poster="Magnojunqueira"
                group_of_poster=""
                date_time_posted="2008-05-13 16:56:23"
                date_time_modified="2008-05-17 18:58:13"
                approved="0"
                record_id="846">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="484.228162" avge_mass="484.5035" composition="H(32) C(20) N(6) O(8)">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="8"/>
         </umod:delta>
         <umod:alt_name>Sumoylation</umod:alt_name>
         <umod:xref>
            <umod:text>Wohlschlegel, J. A. et al., J Proteome Res. 5 761 2006</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/pr050451o</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="cGMP" full_name="S-guanylation" username_of_poster="atsushiirie"
                group_of_poster=""
                date_time_posted="2008-06-21 09:02:53"
                date_time_modified="2014-02-08 02:24:10"
                approved="0"
                record_id="849">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="343.031785" avge_mass="343.1895"
                     composition="H(10) C(10) N(5) O(7) P">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Nat Chem Biol. 3: 727-735, 2007</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>17906641</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15063129</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which is posttranslationally modified by the attachment of cGMP on the sulfur atom of Cys or hydroxyl group of Ser residues.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="cGMP+RMP-loss" full_name="S-guanylation-2"
                username_of_poster="atsushiirie"
                group_of_poster=""
                date_time_posted="2008-06-21 09:06:56"
                date_time_modified="2009-05-24 20:03:08"
                approved="0"
                record_id="851">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="150.041585" avge_mass="150.1182" composition="H(4) C(5) N(5) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Nat Chem Biol. 3: 727-735, 2007</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>17906641</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15063129</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Protein which is posttranslationally modified by the attachment of cGMP that has lost ribose 3\',5\'-cyclic monophosphate moiety on the sulfur atom of Cys or hydroxyl group of Ser.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="mTRAQ" full_name="mTRAQ light" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2008-12-04 13:50:02"
                date_time_modified="2011-11-25 10:30:51"
                approved="0"
                record_id="888">
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="140.094963" avge_mass="140.1830" composition="H(12) C(7) N(2) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems mTRAQ(TM) reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems mTRAQ(TM) Reagents</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www3.appliedbiosystems.com/cms/groups/psm_support/documents/generaldocuments/cms_054141.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Arg2PG" full_name="Adduct of phenylglyoxal with Arg"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2008-05-16 11:07:51"
                date_time_modified="2008-11-21 18:13:56"
                approved="0"
                record_id="848">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>The reaction product of Arg with phenylglyoxal has been shown to be a 2:1 adduct</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="266.057909" avge_mass="266.2482" composition="H(10) C(16) O(4)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11945751</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11698400</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>5723461</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(4)+GG" full_name="Ubiquitination 2H4 lysine"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2008-06-27 14:28:36"
                date_time_modified="2014-07-09 16:52:49"
                approved="0"
                record_id="853">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="118.068034" avge_mass="118.1273"
                     composition="H(2) 2H(4) C(4) N(2) O(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(8)15N(2)" full_name="13C(8) 15N(2) Silac label"
                username_of_poster="nedamoc"
                group_of_poster=""
                date_time_posted="2008-06-30 20:11:08"
                date_time_modified="2008-07-04 19:07:25"
                approved="0"
                record_id="854">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="10.020909" avge_mass="9.9281"
                     composition="C(-8) 13C(8) N(-2) 15N(2)">
            <umod:element symbol="C" number="-8"/>
            <umod:element symbol="13C" number="8"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(1)2H(3)" full_name="SILAC" username_of_poster="msalek"
                group_of_poster=""
                date_time_posted="2008-08-11 13:43:25"
                date_time_modified="2008-08-14 18:16:30"
                approved="0"
                record_id="862">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Isotopic labeled methionine SILAC</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="4.022185" avge_mass="4.0111" composition="H(-3) 2H(3) C(-1) 13C">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="13C" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ZGB" full_name="NHS ester linked Green Fluorescent Bodipy Dye"
                username_of_poster="JBowden"
                group_of_poster=""
                date_time_posted="2008-07-30 14:51:06"
                date_time_modified="2008-09-22 21:42:19"
                approved="0"
                record_id="861">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Other"
                           spec_group="2"/>
         <umod:delta mono_mass="758.380841" avge_mass="758.7261"
                     composition="H(53) B C(37) N(6) O(6) F(2) S">
            <umod:element symbol="H" number="53"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="F" number="2"/>
            <umod:element symbol="S" number="1"/>
            <umod:element symbol="B" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Created for Commercial use by ZDye.  Being utilized in proteomic and peptidomic research soon to be published</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.zdye.com/</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MG-H1" full_name="Methylglyoxal-derived hydroimidazolone"
                username_of_poster="AndrewW"
                group_of_poster=""
                date_time_posted="2008-07-24 14:41:07"
                date_time_modified="2008-07-31 17:14:35"
                approved="0"
                record_id="859">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="54.010565" avge_mass="54.0474" composition="H(2) C(3) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15377717</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="G-H1" full_name="Glyoxal-derived hydroimiadazolone"
                username_of_poster="AndrewW"
                group_of_poster=""
                date_time_posted="2008-07-24 14:44:11"
                date_time_modified="2008-07-31 17:16:39"
                approved="0"
                record_id="860">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="39.994915" avge_mass="40.0208" composition="C(2) O">
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>17143934</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(2)+GG" full_name="13C(6) 15N(2) Lysine glygly"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2008-08-13 21:56:52"
                date_time_modified="2014-07-09 16:53:44"
                approved="0"
                record_id="864">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC PTM (glygly) experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="122.057126" avge_mass="122.0454"
                     composition="H(6) C(-2) 13C(6) 15N(2) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>heavy glygly lysine</umod:alt_name>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICPL:13C(6)2H(4)"
                full_name="Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, +10 Da form"
                username_of_poster="suckau"
                group_of_poster=""
                date_time_posted="2008-09-03 15:17:21"
                date_time_modified="2008-09-12 11:59:23"
                approved="0"
                record_id="866">
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Use when labelling post-digest</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="2">
            <umod:misc_notes>Use when labelling pre-digest</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="115.066700" avge_mass="115.0747"
                     composition="H(-1) 2H(4) 13C(6) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>ICPL_10</umod:alt_name>
         <umod:xref>
            <umod:text>Schmidt A, Kellermann J, Lottspeich F (2005): A novel strategy for quantitative proteomics using isotope-coded protein labels. Proteomics 5: 4-15.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Bruker Daltonics order reference</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.bdal.de/life-science-tools/care-consumables-more/icpl-kit.html</umod:url>
         </umod:xref>
         <umod:misc_notes>Attention: As the digest is typically applied AFTER ICPL labeling, only ProteinN-term labeling and Lys-specific labeling is applied.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DyLight-maleimide"
                full_name="Thiol-reactive dye for fluorescence labelling of proteins"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2008-12-05 15:23:15"
                date_time_modified="2008-12-15 12:17:39"
                approved="0"
                record_id="890">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="940.199900" avge_mass="941.0762"
                     composition="H(48) C(39) N(4) O(15) S(4)">
            <umod:element symbol="H" number="48"/>
            <umod:element symbol="C" number="39"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="15"/>
            <umod:element symbol="S" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/1964as4.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="mTRAQ:13C(3)15N(1)" full_name="mTRAQ medium" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2008-12-05 09:26:02"
                date_time_modified="2011-11-25 10:34:05"
                approved="0"
                record_id="889">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="144.102063" avge_mass="144.1544"
                     composition="H(12) C(4) 13C(3) N 15N O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>mTRAQ medium is identical to iTRAQ4plex 117</umod:alt_name>
         <umod:alt_name>Applied Biosystems mTRAQ(TM) reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems mTRAQ(TM) Reagents</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www3.appliedbiosystems.com/cms/groups/psm_support/documents/generaldocuments/cms_054141.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl-PEO12-Maleimide" full_name="Methyl-PEO12-Maleimide"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2008-12-09 11:02:18"
                date_time_modified="2008-12-15 12:15:50"
                approved="0"
                record_id="891">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="710.383719" avge_mass="710.8073"
                     composition="H(58) C(32) N(2) O(15)">
            <umod:element symbol="H" number="58"/>
            <umod:element symbol="C" number="32"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="15"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/1768dh5.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MDCC"
                full_name="covalent linkage of maleimidyl coumarin probe (Molecular Probes D-10253)"
                username_of_poster="shartson"
                group_of_poster=""
                date_time_posted="2008-12-03 16:20:46"
                date_time_modified="2008-12-05 09:32:22"
                approved="0"
                record_id="887">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Due to the mechanism of maleimidyl modification of Cys, the molecular weight of MDCC equals the mass shift created upon crossllinking (no chemical leaving group). During MS/MS, MDCC can reasonably be predicted to fragment readily and at various positions.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="383.148121" avge_mass="383.3978" composition="H(21) C(20) N(3) O(5)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:alt_name>CAS 156571-46-9</umod:alt_name>
         <umod:alt_name>7-diethylamino-3-((((2-maleimidyl)ethyl)amino)carbonyl)coumarin</umod:alt_name>
         <umod:xref>
            <umod:text>technical resources at Molecular Probes</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://products.invitrogen.com/ivgn/en/US/adirect/invitrogen?cmd=catProductDetail&amp;entryPoint=adirect&amp;productID=D10253&amp;messageType=catProductDetail&amp;showAddButton=true</umod:url>
         </umod:xref>
         <umod:misc_notes>MDCC is used extensively as a fluorescent probe to report changes in protein conformation.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="QQQTGG" full_name="SUMOylation by SUMO-2/3" username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2008-09-09 17:09:04"
                date_time_modified="2008-09-19 19:06:46"
                approved="0"
                record_id="877">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>This peptide is generated from a trypsin/chymotrypsin dual digest</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="599.266339" avge_mass="599.5942"
                     composition="H(37) C(23) N(9) O(10)">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="9"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
         <umod:alt_name>GlnGlnGlnThrGlyGly</umod:alt_name>
      </umod:mod>
      <umod:mod title="QEQTGG" full_name="SUMOylation by SUMO-1" username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2008-09-09 17:02:45"
                date_time_modified="2011-11-25 13:05:17"
                approved="0"
                record_id="876">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>This peptide is generated from a trypsin/chymotrypsin dual digest.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="600.250354" avge_mass="600.5789"
                     composition="H(36) C(23) N(8) O(11)">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="O" number="11"/>
         </umod:delta>
         <umod:alt_name>GlnGluGlnThrGlyGly</umod:alt_name>
      </umod:mod>
      <umod:mod title="HydroxymethylOP"
                full_name="2-ammonio-6-[4-(hydroxymethyl)-3-oxidopyridinium-1-yl]- hexanoate"
                username_of_poster="AndrewW"
                group_of_poster=""
                date_time_posted="2008-11-03 14:35:36"
                date_time_modified="2008-11-09 17:49:00"
                approved="0"
                record_id="886">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>Advanced Glycation Endproduct</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="108.021129" avge_mass="108.0948" composition="H(4) C(6) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>12595094</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21325" full_name="was ChromoBiotin"
                username_of_poster="chens002"
                group_of_poster=""
                date_time_posted="2008-10-20 13:26:20"
                date_time_modified="2010-12-03 16:04:54"
                approved="0"
                record_id="884">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="695.310118" avge_mass="695.8288"
                     composition="H(45) C(34) N(7) O(7) S">
            <umod:element symbol="H" number="45"/>
            <umod:element symbol="C" number="34"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>EZ-Link NHS-Chromogenic Biotin</umod:alt_name>
         <umod:xref>
            <umod:text>Thermo Scientific (Pierce) Product 21325</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=44B1F9DF-B306-4278-B292-6CDB5B3B9D53</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(1)2H(3)+Oxidation"
                full_name="Oxidised methionine 13C(1)2H(3) SILAC label"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2008-10-24 09:47:20"
                date_time_modified="2009-09-25 13:15:07"
                approved="0"
                record_id="885">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="20.017100" avge_mass="20.0105" composition="H(-3) 2H(3) C(-1) 13C O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Bodipy" full_name="Bodipy modifications onto cysteine"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2008-09-10 20:24:53"
                date_time_modified="2008-09-12 18:30:57"
                approved="0"
                record_id="878">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="414.167478" avge_mass="414.2135"
                     composition="H(21) B C(20) N(4) O(3) F(2)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="F" number="2"/>
            <umod:element symbol="B" number="1"/>
         </umod:delta>
         <umod:alt_name>Which one?</umod:alt_name>
         <umod:xref>
            <umod:text>Invitrogen BODIPY Handbook</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://probes.invitrogen.com/handbook/sections/0104.html</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin-PEG-PRA" full_name="Biotin polyethyleneoxide (n=3) alkyne"
                username_of_poster="Larsenmarsen"
                group_of_poster=""
                date_time_posted="2009-01-19 10:54:58"
                date_time_modified="2009-02-06 16:50:56"
                approved="0"
                record_id="895">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="578.317646" avge_mass="578.6611" composition="H(42) C(26) N(8) O(7)">
            <umod:element symbol="H" number="42"/>
            <umod:element symbol="C" number="26"/>
            <umod:element symbol="N" number="8"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Page 12 Scheme 1: (1) Structure of azidohomoalanine (2) Biotin-PEO-alkyne in our case PEO n=3 as in this publication</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://etd.caltech.edu/etd/available/etd-09132005-120123/unrestricted/Chapter2.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Drug Discovery Today Volume 8, Issue 24, 15 December 2003, Pages 1128-1137 Figure 4 page 1335</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.sciencedirect.com/science?_ob=ArticleURL&amp;_udi=B6T64-4B6C6T5-D&amp;_user=616146&amp;_rdoc=1&amp;_fmt=&amp;_orig=search&amp;_sort=d&amp;view=c&amp;_acct=C000032323&amp;_version=1&amp;_urlVersion=0&amp;_userid=616146&amp;md5=b526a97bcf2d86ccddd5f602e2bcb53a</umod:url>
         </umod:xref>
         <umod:misc_notes>Methionine (C5H11NO2S) is substituted in cell culture by Azidohomoalanine (C4H8N4O2). The azido group reacts with an alkyne group attached to a linker (PEO) with a biotin group at the end (C27H45N5O7S). As a result the side chain of Met (C3H7S) is substitued by C29H49N8O7S.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Met-&gt;Aha" full_name="Methionine replacement by azido homoalanine"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2009-01-30 14:52:20"
                date_time_modified="2009-02-06 16:38:02"
                approved="0"
                record_id="896">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="-4.986324" avge_mass="-5.0794" composition="H(-3) C(-1) N(3) S(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>16281315</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11752401</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:15N(4)" full_name="SILAC 15N(4)" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2009-02-06 15:29:55"
                date_time_modified="2011-11-21 14:26:52"
                approved="0"
                record_id="897">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="3.988140" avge_mass="3.9736" composition="N(-4) 15N(4)">
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
         <umod:alt_name>Metabolic labeling with ammonium sulfate (15N)</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="pyrophospho" full_name="pyrophosphorylation of Ser/Thr"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2009-02-23 20:54:00"
                date_time_modified="2009-11-11 09:39:17"
                approved="0"
                record_id="898">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Post-translational"
                           spec_group="2">
            <umod:NeutralLoss mono_mass="176.935402" avge_mass="176.9671" flag="false"
                              composition="H(3) O(7) P(2)">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="7"/>
               <umod:element symbol="P" number="2"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="176.935402" avge_mass="176.9671" flag="false"
                              composition="H(3) O(7) P(2)">
               <umod:element symbol="H" number="3"/>
               <umod:element symbol="O" number="7"/>
               <umod:element symbol="P" number="2"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="159.932662" avge_mass="159.9598" composition="H(2) O(6) P(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>17873058</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Met-&gt;Hpg" full_name="methionine replacement by homopropargylglycine"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2009-02-24 17:11:44"
                date_time_modified="2009-03-13 16:00:16"
                approved="0"
                record_id="899">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="-21.987721" avge_mass="-22.0702" composition="H(-2) C S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>DOI: 10.1021/ja992749j

Efficient incorporation of unsaturated methionine analogues into proteins in vivo</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/pdf/10.1021/ja992749j</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="4AcAllylGal"
                full_name="2,3,4,6-tetra-O-Acetyl-1-allyl-alpha-D-galactopyranoside modification of cysteine"
                username_of_poster="paolo.nanni"
                group_of_poster=""
                date_time_posted="2009-03-06 16:08:43"
                date_time_modified="2014-06-23 14:32:00"
                approved="0"
                record_id="901">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="372.142033" avge_mass="372.3671" composition="H(24) C(17) O(9)">
            <umod:element symbol="H" number="24"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="O" number="9"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18275052</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>19798718</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DimethylArsino" full_name="Reaction with dimethylarsinous (AsIII) acid"
                username_of_poster="dashford"
                group_of_poster=""
                date_time_posted="2009-03-09 17:03:27"
                date_time_modified="2009-03-13 15:59:22"
                approved="0"
                record_id="902">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="103.960719" avge_mass="103.9827" composition="H(5) C(2) As">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="As" number="1"/>
         </umod:delta>
         <umod:misc_notes>Protein from animals exposed to organoarsenicals</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Lys-&gt;CamCys" full_name="Lys-&gt;Cys substitution and carbamidomethylation"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2009-04-17 14:47:30"
                date_time_modified="2009-05-01 16:47:52"
                approved="0"
                record_id="903">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Pre-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="31.935685" avge_mass="32.0219" composition="H(-4) C(-1) O S">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:misc_notes>for Brad Strader</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Phe-&gt;CamCys" full_name="Phe-&gt;Cys substitution and carbamidomethylation"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2009-04-17 14:49:02"
                date_time_modified="2009-07-13 18:16:29"
                approved="0"
                record_id="904">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Pre-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="12.962234" avge_mass="13.0204" composition="H(-1) C(-4) N O S">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:misc_notes>for Brad Strader</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Leu-&gt;MetOx" full_name="Leu-&gt;Met substitution and sulfoxidation"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2009-04-17 14:50:35"
                date_time_modified="2009-05-01 16:47:06"
                approved="0"
                record_id="905">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Pre-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="33.951335" avge_mass="34.0378" composition="H(-2) C(-1) O S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:misc_notes>for Brad Strader</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Lys-&gt;MetOx" full_name="Lys-&gt;Met substitution and sulfoxidation"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2009-04-17 14:51:35"
                date_time_modified="2009-05-01 16:46:28"
                approved="0"
                record_id="906">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Pre-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="18.940436" avge_mass="19.0232" composition="H(-3) C(-1) N(-1) O S">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:misc_notes>for Brad Strader</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Galactosyl" full_name="Galactosyl hydroxylysine"
                username_of_poster="zientek"
                group_of_poster=""
                date_time_posted="2009-04-21 18:11:24"
                date_time_modified="2010-03-02 20:53:08"
                approved="0"
                record_id="907">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="162.052824" avge_mass="162.1406" flag="false" composition="Hex">
               <umod:element symbol="H" number="10"/>
               <umod:element symbol="C" number="6"/>
               <umod:element symbol="O" number="5"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="178.047738" avge_mass="178.1400" composition="O Hex">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>743239</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/743239?ordinalpos=1&amp;itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SMCC-maleimide"
                full_name="Modified SMCC maleimide with 3-(dimethylamino)-1-propylamine"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2009-04-23 19:39:42"
                date_time_modified="2009-05-01 16:41:44"
                approved="0"
                record_id="908">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="321.205242" avge_mass="321.4146" composition="H(27) C(17) N(3) O(3)">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="C" number="17"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>http://www.piercenet.com/files/0581dh5.pdf</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/files/0581dh5.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Bacillosamine" full_name="2,4-diacetamido-2,4,6-trideoxyglucopyranose"
                username_of_poster="rlmoritz"
                group_of_poster=""
                date_time_posted="2009-06-23 18:27:32"
                date_time_modified="2009-06-26 11:12:01"
                approved="0"
                record_id="910">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="228.111007" avge_mass="228.2450" composition="H(16) C(10) N(2) O(4)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:alt_name>Asn-linked glycan from Gram-negative Bacterium</umod:alt_name>
         <umod:xref>
            <umod:text>12186869</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.jbc.org/cgi/content/full/277/45/42530?view=long&amp;pmid=12186869</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MTSL"
                full_name="Cys modification by (1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-methyl)methanesulfonate (MTSL)"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2009-06-25 20:19:40"
                date_time_modified="2009-06-26 11:13:49"
                approved="0"
                record_id="911">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="184.079610" avge_mass="184.2786" composition="H(14) C(9) N O S">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9335564</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12441112</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HNE-BAHAH"
                full_name="4-hydroxy-2-nonenal and biotinamidohexanoic acid hydrazide, reduced"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2009-07-13 18:23:28"
                date_time_modified="2009-07-17 17:49:45"
                approved="0"
                record_id="912">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="511.319226" avge_mass="511.7209"
                     composition="H(45) C(25) N(5) O(4) S">
            <umod:element symbol="H" number="45"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>19054759</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/19054759?ordinalpos=2&amp;itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum</umod:url>
         </umod:xref>
         <umod:misc_notes>for Bindu Abraham</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ethoxyformyl" full_name="Ethoxyformylation" username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2009-07-24 17:00:29"
                date_time_modified="2009-07-26 22:05:56"
                approved="0"
                record_id="915">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="73.028954" avge_mass="73.0706" composition="H(5) C(3) O(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochemistry, 1970, 9 (2), pp 251–258 DOI: 10.1021/bi00804a010</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/bi00804a010</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methylmalonylation" full_name="Methylmalonylation on Serine"
                username_of_poster="xwei"
                group_of_poster=""
                date_time_posted="2009-07-15 23:43:13"
                date_time_modified="2010-11-24 17:59:18"
                approved="0"
                record_id="914">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="100.016044" avge_mass="100.0728" composition="H(4) C(4) O(3)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Bifunctional Acyltransferase/Decarboxylase LnmK as the Missing Link for beta-Alkylation in Polyketide Biosynthesis, J. Am. Chem. Soc., 2009, 131 (20), pp 6900-6901</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/ja9012134</umod:url>
         </umod:xref>
         <umod:misc_notes>structural isomer to succinyl</umod:misc_notes>
      </umod:mod>
      <umod:mod title="AROD" full_name="Cysteine modifier" username_of_poster="hbromage"
                group_of_poster=""
                date_time_posted="2009-10-15 19:27:20"
                date_time_modified="2009-10-16 14:41:49"
                approved="0"
                record_id="938">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="820.336015" avge_mass="820.9790"
                     composition="H(52) C(35) N(10) O(9) S(2)">
            <umod:element symbol="H" number="52"/>
            <umod:element symbol="C" number="35"/>
            <umod:element symbol="N" number="10"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:misc_notes>The electrophilic moiety of the chemical forms a direct bond with the thiol bond of the cysteine.  As a result, there are no losses of elements and the final adduct has the monoisotopic mass of the chemical at 820.3360 added to a cysteine at SH side chain.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Cys-&gt;methylaminoAla"
                full_name="carbamidomethylated Cys that undergoes beta-elimination and Michael addition of methylamine"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2009-10-16 13:50:33"
                date_time_modified="2009-10-16 14:44:00"
                approved="0"
                record_id="939">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="-2.945522" avge_mass="-3.0238" composition="H(3) C N S(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cys-&gt;ethylaminoAla"
                full_name="Carbamidomethylated Cys that undergoes beta-elimination and Michael addition of ethylamine"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2009-10-16 13:53:46"
                date_time_modified="2009-10-16 14:44:21"
                approved="0"
                record_id="940">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="11.070128" avge_mass="11.0028" composition="H(5) C(2) N S(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(4)15N(2)+GG" full_name="13C(4) 15N(2) Lysine glygly"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2009-09-16 21:04:07"
                date_time_modified="2014-07-09 16:53:30"
                approved="0"
                record_id="923">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>Used in SILAC PTM (glygly) experiment</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="120.050417" avge_mass="120.0601"
                     composition="H(6) 13C(4) 15N(2) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>heavy glygly lysine</umod:alt_name>
         <umod:xref>
            <umod:text>12716131</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ethylamino" full_name="ethyl amino" username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2009-09-17 20:37:18"
                date_time_modified="2009-10-02 18:21:10"
                approved="0"
                record_id="926">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="27.047285" avge_mass="27.0684" composition="H(5) C(2) N O(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:misc_notes>product of beta elimination of phospho- or glycosylated-Ser with addition of ethylamine</umod:misc_notes>
      </umod:mod>
      <umod:mod title="MercaptoEthanol" full_name="2-OH-ethyl thio-Ser"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2009-09-17 20:43:13"
                date_time_modified="2009-10-02 18:23:38"
                approved="0"
                record_id="928">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="60.003371" avge_mass="60.1182" composition="H(4) C(2) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:misc_notes>product of beta elimination of phospho- or glycosylated-Ser with addition of beta Mercapto Ethanol</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Atto495Maleimide"
                full_name="High molecular absorption maleimide label for proteins"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2009-10-14 18:48:56"
                date_time_modified="2009-10-16 14:34:17"
                approved="0"
                record_id="935">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="474.250515" avge_mass="474.5747" composition="H(32) C(27) N(5) O(3)">
            <umod:element symbol="H" number="32"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Sigma datasheet</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.sigmaaldrich.com/etc/medialib/docs/Sigma/Datasheet/6/41022dat.Par.0001.File.tmp/41022dat.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Fluorescence depletion mechanisms in super-resolving STED microscopy</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1016/j.cplett.2007.06.017</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="AMTzHexNAc2" full_name="Photocleavable Biotin + GalNAz on O-GlcNAc"
                username_of_poster="mskim"
                group_of_poster=""
                date_time_posted="2009-10-08 18:05:00"
                date_time_modified="2010-10-03 13:45:56"
                approved="0"
                record_id="934">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="502.202341" avge_mass="502.4757"
                     composition="H(30) C(19) N(6) O(10)">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="19"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Enrichment and site-mapping of O-Linked N-Acetylglucosamine by a combination of chemical/enzymatic tagging, photochemical cleavage, and electron transfer dissociation (ETD) mass spectrometry</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1074/mcp.M900268-MCP200</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ethyl+Deamidated"
                full_name="deamidation followed by esterification with ethanol"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2009-09-22 11:05:21"
                date_time_modified="2012-08-06 14:58:24"
                approved="0"
                record_id="931">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="29.015316" avge_mass="29.0379" composition="H(3) C(2) N(-1) O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Effects of Tryptic peptide esterification in MALDI mass spectrometry Anal. Chem. 2005, 77, 4185-4193</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/ac0481250</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="VFQQQTGG" full_name="SUMOylation by SUMO-2/3 (formic acid cleavage)"
                username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2009-09-24 16:11:11"
                date_time_modified="2010-02-02 18:25:30"
                approved="0"
                record_id="932">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>This peptide is generated from a formic acid digest</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="845.403166" avge_mass="845.8991"
                     composition="H(55) C(37) N(11) O(12)">
            <umod:element symbol="H" number="55"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="11"/>
            <umod:element symbol="O" number="12"/>
         </umod:delta>
         <umod:alt_name>ValPheGlnGlnGlnThrGlyGly</umod:alt_name>
      </umod:mod>
      <umod:mod title="VIEVYQEQTGG" full_name="SUMOylation by SUMO-1 (formic acid cleavage)"
                username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2009-09-24 16:15:34"
                date_time_modified="2009-10-02 18:31:51"
                approved="0"
                record_id="933">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="1203.577168" avge_mass="1204.2859"
                     composition="H(81) C(53) N(13) O(19)">
            <umod:element symbol="H" number="81"/>
            <umod:element symbol="C" number="53"/>
            <umod:element symbol="N" number="13"/>
            <umod:element symbol="O" number="19"/>
         </umod:delta>
         <umod:alt_name>ValIleGluValTyrGlnGluGlnThrGlyGly</umod:alt_name>
      </umod:mod>
      <umod:mod title="Chlorination" full_name="Chlorination of tyrosine residues"
                username_of_poster="Bryan"
                group_of_poster=""
                date_time_posted="2009-10-15 17:07:41"
                date_time_modified="2014-05-19 10:13:05"
                approved="0"
                record_id="936">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="33.961028" avge_mass="34.4451" composition="H(-1) Cl">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Cl" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>14660678</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="dichlorination" full_name="Dichlorination" username_of_poster="Bryan"
                group_of_poster=""
                date_time_posted="2009-10-15 17:12:42"
                date_time_modified="2014-05-19 10:13:24"
                approved="0"
                record_id="937">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="67.922055" avge_mass="68.8901" composition="H(-2) Cl(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Cl" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>11733505</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DNPS" full_name="2,4-Dinitrobenzenesulfenyl"
                username_of_poster="odra.pinato"
                group_of_poster=""
                date_time_posted="2009-10-19 13:08:56"
                date_time_modified="2009-10-30 18:23:17"
                approved="0"
                record_id="941">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Fontana A. Biochemistry. vol 7.  980-986 (1968)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="2">
            <umod:misc_notes>derivatization of Trp residues using the 2,4-dinitrophenyl-sulfenyl chloride (DNPS-Cl) reagent, that leads to a Trp derivative with the DNPS label attached at 2-position of the indole nucleus.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="198.981352" avge_mass="199.1640" composition="H(3) C(6) N(2) O(4) S">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Trp modification with 2,4-Dinitrobenzenesulfenyl</umod:alt_name>
         <umod:xref>
            <umod:text>Fontana A. Methods Enzymol 25 482-494 (1972)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Fontana A. Biochemistry. vol 7. 971-979 and 980-986 (1968)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Fontana A. Biochemical and biophysical research communications. vol. 25 (2). 170-174 (1966)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SulfoGMBS" full_name="High molecular absorption label for proteins"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2009-10-26 19:28:04"
                date_time_modified="2009-11-13 17:02:06"
                approved="0"
                record_id="942">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="458.162391" avge_mass="458.5306"
                     composition="H(26) C(22) N(4) O(5) S">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/1763dh4.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DimethylamineGMBS" full_name="Modified GMBS X linker for proteins"
                username_of_poster="anikolakakis"
                group_of_poster=""
                date_time_posted="2009-11-04 20:26:57"
                date_time_modified="2009-11-13 16:38:29"
                approved="0"
                record_id="943">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="267.158292" avge_mass="267.3241" composition="H(21) C(13) N(3) O(3)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Pierce data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/files/1763dh4.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:15N(2)2H(9)" full_name="SILAC label" username_of_poster="mskim"
                group_of_poster=""
                date_time_posted="2009-11-25 22:32:49"
                date_time_modified="2009-12-07 20:03:50"
                approved="0"
                record_id="944">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="11.050561" avge_mass="11.0423"
                     composition="H(-9) 2H(9) N(-2) 15N(2)">
            <umod:element symbol="H" number="-9"/>
            <umod:element symbol="2H" number="9"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
         <umod:alt_name>Label:15N(2)2H(9)</umod:alt_name>
      </umod:mod>
      <umod:mod title="LG-anhydrolactam" full_name="Levuglandinyl-lysine anhydrolactam adduct"
                username_of_poster="wridenour"
                group_of_poster=""
                date_time_posted="2010-01-12 01:08:28"
                date_time_modified="2011-06-08 18:01:31"
                approved="0"
                record_id="946">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="314.188195" avge_mass="314.4186" composition="H(26) C(20) O(3)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Boutaud O, Brame CJ, Salomon RG, Roberts LJ 2nd, Oates JA. Characterization of the lysyl adducts formed from prostaglandin H2 via the levuglandin pathway. Biochemistry. 1999 Jul 20;38(29):9389-96.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>10413514</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="LG-pyrrole" full_name="Levuglandinyl-lysine pyrrole adduct"
                username_of_poster="wridenour"
                group_of_poster=""
                date_time_posted="2010-01-12 01:12:38"
                date_time_modified="2011-06-08 18:01:50"
                approved="0"
                record_id="947">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="316.203845" avge_mass="316.4345" composition="H(28) C(20) O(3)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Boutaud O, Brame CJ, Salomon RG, Roberts LJ 2nd, Oates JA. Characterization of the lysyl adducts formed from prostaglandin H2 via the levuglandin pathway. Biochemistry. 1999 Jul 20;38(29):9389-96.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>10413514</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="LG-anhyropyrrole" full_name="Levuglandinyl-lysine anhyropyrrole adduct"
                username_of_poster="wridenour"
                group_of_poster=""
                date_time_posted="2010-01-12 01:14:46"
                date_time_modified="2011-06-08 17:59:35"
                approved="0"
                record_id="948">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="298.193280" avge_mass="298.4192" composition="H(26) C(20) O(2)">
            <umod:element symbol="H" number="26"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Boutaud O, Brame CJ, Salomon RG, Roberts LJ 2nd, Oates JA., Characterization of the lysyl adducts formed from prostaglandin H2 via the levuglandin pathway. Biochemistry. 1999 Jul 20;38(29):9389-96.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>10413514</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="3-deoxyglucosone" full_name="Condensation product of 3-deoxyglucosone"
                username_of_poster="kimzey"
                group_of_poster=""
                date_time_posted="2010-01-15 18:19:17"
                date_time_modified="2010-01-18 13:20:51"
                approved="0"
                record_id="949">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="144.042259" avge_mass="144.1253" composition="H(8) C(6) O(4)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Biochem. J. (1999) 344  (109–116)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.biochemj.org/bj/344/0109/bj3440109.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cation:Li" full_name="Replacement of proton by lithium"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:17:12"
                date_time_modified="2010-01-20 12:17:13"
                approved="0"
                record_id="950">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="6.008178" avge_mass="5.9331" composition="H(-1) Li">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Li" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Ca[II]" full_name="Replacement of 2 protons by calcium"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:20:03"
                date_time_modified="2010-01-20 12:36:41"
                approved="0"
                record_id="951">
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="37.946941" avge_mass="38.0621" composition="H(-2) Ca">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Ca" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Fe[II]" full_name="Replacement of 2 protons by iron"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:21:03"
                date_time_modified="2010-01-20 12:21:03"
                approved="0"
                record_id="952">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="53.919289" avge_mass="53.8291" composition="H(-2) Fe">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Fe" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Ni[II]" full_name="Replacement of 2 protons by nickel"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:22:52"
                date_time_modified="2010-01-20 12:22:52"
                approved="0"
                record_id="953">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="55.919696" avge_mass="56.6775" composition="H(-2) Ni">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Ni" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Zn[II]" full_name="Replacement of 2 protons by zinc"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:23:59"
                date_time_modified="2010-01-20 12:24:16"
                approved="0"
                record_id="954">
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="61.913495" avge_mass="63.3931" composition="H(-2) Zn">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Zn" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Ag" full_name="Replacement of proton by silver"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:30:59"
                date_time_modified="2010-01-20 12:30:59"
                approved="0"
                record_id="955">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="105.897267" avge_mass="106.8603" composition="H(-1) Ag">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="Ag" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Cation:Mg[II]" full_name="Replacement of 2 protons by magnesium"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-01-20 12:36:18"
                date_time_modified="2010-01-20 12:36:18"
                approved="0"
                record_id="956">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="2"/>
         <umod:delta mono_mass="21.969392" avge_mass="22.2891" composition="H(-2) Mg">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="Mg" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="2-succinyl" full_name="S-(2-succinyl) cysteine"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-01-26 09:57:53"
                date_time_modified="2010-10-15 15:51:20"
                approved="0"
                record_id="957">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="116.010959" avge_mass="116.0722" composition="H(4) C(4) O(4)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18448829</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Propargylamine" full_name="propargylamine"
                username_of_poster="ywswansea"
                group_of_poster=""
                date_time_posted="2010-01-26 14:37:33"
                date_time_modified="2010-02-01 09:26:28"
                approved="0"
                record_id="958">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="37.031634" avge_mass="37.0632" composition="H(3) C(3) N O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Phosphopropargyl" full_name="phospho-propargylamine"
                username_of_poster="ywswansea"
                group_of_poster=""
                date_time_posted="2010-01-26 14:42:08"
                date_time_modified="2010-02-01 09:25:52"
                approved="0"
                record_id="959">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Multiple"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Multiple"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="116.997965" avge_mass="117.0431" composition="H(4) C(3) N O(2) P">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="SUMO2135" full_name="SUMOylation by SUMO-1 after tryptic cleavage"
                username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2010-02-02 18:17:15"
                date_time_modified="2010-02-14 11:28:47"
                approved="0"
                record_id="960">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="2135.920496" avge_mass="2137.2343"
                     composition="H(137) C(90) N(21) O(37) S">
            <umod:element symbol="H" number="137"/>
            <umod:element symbol="C" number="90"/>
            <umod:element symbol="N" number="21"/>
            <umod:element symbol="O" number="37"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>ELGMEEEDVIEVYQEQTGG</umod:alt_name>
      </umod:mod>
      <umod:mod title="SUMO3549" full_name="SUMOylation by SUMO-2/3 after tryptic cleavage"
                username_of_poster="oosula"
                group_of_poster=""
                date_time_posted="2010-02-02 18:21:23"
                date_time_modified="2010-02-14 11:27:47"
                approved="0"
                record_id="961">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="3549.536568" avge_mass="3551.6672"
                     composition="H(224) C(150) N(38) O(60) S">
            <umod:element symbol="H" number="224"/>
            <umod:element symbol="C" number="150"/>
            <umod:element symbol="N" number="38"/>
            <umod:element symbol="O" number="60"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>FDGQPINETDTPAQLEMEDEDTIDVFQQQTGG</umod:alt_name>
      </umod:mod>
      <umod:mod title="Chlorpyrifos"
                full_name="O,O-diethyl o-3,5,6-trichloro-2-pyridyl phosphorothioate"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2010-02-24 20:59:41"
                date_time_modified="2010-04-05 21:28:28"
                approved="0"
                record_id="975">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="153.013912" avge_mass="153.1598" composition="H(10) C(4) O(2) P S">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="BITC" full_name="Benzyl isothiocyanate" username_of_poster="miyoshin"
                group_of_poster=""
                date_time_posted="2010-03-09 09:42:12"
                date_time_modified="2013-04-26 06:26:47"
                approved="0"
                record_id="978">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="149.029920" avge_mass="149.2129" composition="H(7) C(8) N S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>22835833</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Carbofuran"
                full_name="2,3-dihydro-2,2-dimethyl-7-benzofuranol N-methyl carbamate"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2010-02-24 21:10:32"
                date_time_modified="2010-04-05 21:27:53"
                approved="0"
                record_id="977">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="58.029289" avge_mass="58.0593" composition="H(4) C(2) N O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Li, Ricordel, Tong, Schopfer, Baud, Megarbane, Maury, Masson and Lockridge; Carbofuran poisoning detected by mass spectrometry of butyrylcholinesterase adduct in human serum.  J Applied Toxicol 29, 149-155 (2009)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PEITC" full_name="Phenethyl isothiocyanate"
                username_of_poster="miyoshin"
                group_of_poster=""
                date_time_posted="2010-03-09 10:06:18"
                date_time_modified="2013-04-26 06:27:10"
                approved="0"
                record_id="979">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="163.045570" avge_mass="163.2395" composition="H(9) C(9) N S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>22835833</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="thioacylPA" full_name="membrane protein extraction"
                username_of_poster="tmiwamoto"
                group_of_poster=""
                date_time_posted="2010-02-05 06:00:39"
                date_time_modified="2010-04-05 21:31:02"
                approved="0"
                record_id="967">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="159.035399" avge_mass="159.2062" composition="H(9) C(6) N O(2) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="maleimide3" full_name="maleimide-3-saccharide"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2010-02-12 17:23:33"
                date_time_modified="2010-04-05 21:30:05"
                approved="0"
                record_id="971">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:delta mono_mass="969.366232" avge_mass="969.8975"
                     composition="H(59) C(37) N(7) O(23)">
            <umod:element symbol="H" number="59"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="23"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18925771</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Bindu Abraham 12/22/09</umod:misc_notes>
      </umod:mod>
      <umod:mod title="maleimide5" full_name="maleimide-5-saccharide"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2010-02-12 17:25:52"
                date_time_modified="2010-04-05 21:29:47"
                approved="0"
                record_id="972">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="1293.471879" avge_mass="1294.1787"
                     composition="H(79) C(49) N(7) O(33)">
            <umod:element symbol="H" number="79"/>
            <umod:element symbol="C" number="49"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="33"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18925771</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Bindu Abraham 12/22/09</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Puromycin" full_name="Puromycin" username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2010-02-12 20:50:31"
                date_time_modified="2010-04-12 15:38:52"
                approved="0"
                record_id="973">
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Co-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="453.212452" avge_mass="453.4943" composition="H(27) C(22) N(7) O(4)">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="N" number="7"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10666460</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Michael (Brad) Strader 2/12/10</umod:misc_notes>
      </umod:mod>
      <umod:mod title="glucosone" full_name="Condensation product of glucosone"
                username_of_poster="kimzey"
                group_of_poster=""
                date_time_posted="2010-03-31 00:28:53"
                date_time_modified="2010-04-05 21:25:21"
                approved="0"
                record_id="981">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="160.037173" avge_mass="160.1247" composition="H(8) C(6) O(5)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>glucosone</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/full/10.1021/jf9019085</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(6)+Dimethyl" full_name="Dimethyl 13C(6) Silac label"
                username_of_poster="glick2"
                group_of_poster=""
                date_time_posted="2010-05-09 10:48:19"
                date_time_modified="2010-05-14 16:19:43"
                approved="0"
                record_id="986">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1">
            <umod:misc_notes>SILAC+PTM</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="34.051429" avge_mass="34.0091" composition="H(4) C(-4) 13C(6)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>DIMETH</umod:text>
            <umod:source>FindMod</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>SILAC introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Stable-isotope dimethyl labeling for quantitative proteomics</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/14670044?dopt=AbstractPlus</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="cysTMT" full_name="Native cysteine-reactive Tandem Mass Tag"
                username_of_poster="jorogers6"
                group_of_poster=""
                date_time_posted="2010-04-22 21:57:44"
                date_time_modified="2010-04-28 18:04:40"
                approved="0"
                record_id="984">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="299.166748" avge_mass="299.4322"
                     composition="H(25) C(14) N(3) O(2) S">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:xref>
            <umod:text>John.C.Rogers@thermo.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This modification describes the native cysteine-reactive cysTMT Reagent without isotopic label. Upon CID, this reagent releases a reporter ion of 126.127725 (monoisotopic mass).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="cysTMT6plex" full_name="cysteine-reactive Sixplex Tandem Mass Tag"
                username_of_poster="jorogers6"
                group_of_poster=""
                date_time_posted="2010-04-22 22:05:46"
                date_time_modified="2010-04-22 22:06:15"
                approved="0"
                record_id="985">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="304.177202" avge_mass="304.3962"
                     composition="H(25) C(10) 13C(4) N(2) 15N O(2) S">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:xref>
            <umod:text>John.C.Rogers@thermo.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This modification describes the isobaric sixplex cysteine-reactive cysTMT6 Reagents with isotopic labels. Upon CID, these reagents release reporter ions of 126.127725, 127.131079, 128.134433, 129.137787, 130.141141, and 131.138176 (monoisotopic mass).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="ISD_z+2_ion" full_name="ISD (z+2)-series" username_of_poster="suckau"
                group_of_poster=""
                date_time_posted="2010-06-08 09:42:52"
                date_time_modified="2010-06-28 10:47:55"
                approved="0"
                record_id="991">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>this is a "virtual modification", as it only accounts for the structure of the MS/MS fragment as it occurs in Top-Down MS/MS analyses. This must be accounted for in MS³-analysis of z+2 ions</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="-15.010899" avge_mass="-15.0146" composition="H(-1) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="N" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Ammonium" full_name="replacement of proton with ammonium ion"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-05-18 10:32:03"
                date_time_modified="2010-06-04 15:08:34"
                approved="0"
                record_id="989">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C-term" position="Any C-term" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="17.026549" avge_mass="17.0305" composition="H(3) N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:misc_notes>sometimes observed after elution of phosphopeptides from TiO2 with ammonium hydroxide</umod:misc_notes>
      </umod:mod>
      <umod:mod title="BHAc" full_name="N-biotinyl-6-aminohexanoyl"
                username_of_poster="natfre08"
                group_of_poster=""
                date_time_posted="2010-07-13 14:38:17"
                date_time_modified="2010-08-02 17:37:08"
                approved="0"
                record_id="998">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="339.161662" avge_mass="339.4530"
                     composition="H(25) C(16) N(3) O(3) S">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Patricelli et al. (2007). Functional Interrogation of the Kinome Using Nucleotide Acyl Phosphates. Biochemistry, 46, 350-358.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/bi062142x</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Sigma-B1267" full_name="was Biotin-maleimide"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2010-06-10 07:50:00"
                date_time_modified="2010-12-03 16:02:22"
                approved="0"
                record_id="993">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="449.173290" avge_mass="449.5239"
                     composition="H(27) C(20) N(5) O(5) S">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="C" number="20"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>maleimide biotinylated</umod:alt_name>
         <umod:xref>
            <umod:text>Datasheet for Sigma Aldrich product.</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.sigmaaldrich.com/catalog/DataSheetPage.do?brandKey=SIGMA&amp;symbol=B1267</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>15449375</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:15N(1)" full_name="15N(1)" username_of_poster="ppicotti"
                group_of_poster=""
                date_time_posted="2010-06-22 14:52:08"
                date_time_modified="2011-11-21 14:26:07"
                approved="0"
                record_id="994">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="14"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Isotopic label"
                           spec_group="13"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Isotopic label"
                           spec_group="12"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Isotopic label"
                           spec_group="11"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="Isotopic label"
                           spec_group="10"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="9"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="8"/>
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="Isotopic label"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Isotopic label"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="0.997035" avge_mass="0.9934" composition="N(-1) 15N">
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:alt_name>Metabolic labeling with ammonium sulfate (15N)</umod:alt_name>
         <umod:xref>
            <umod:text>19664813</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:15N(2)" full_name="15N(2)" username_of_poster="ppicotti"
                group_of_poster=""
                date_time_posted="2010-06-22 15:29:02"
                date_time_modified="2011-11-21 14:26:18"
                approved="0"
                record_id="995">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Isotopic label"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="1.994070" avge_mass="1.9868" composition="N(-2) 15N(2)">
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="15N" number="2"/>
         </umod:delta>
         <umod:alt_name>Metabolic labeling with ammonium sulfate (15N)</umod:alt_name>
         <umod:xref>
            <umod:text>19664813</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:15N(3)" full_name="15N(3)" username_of_poster="ppicotti"
                group_of_poster=""
                date_time_posted="2010-06-22 15:30:28"
                date_time_modified="2011-11-21 14:26:28"
                approved="0"
                record_id="996">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="2.991105" avge_mass="2.9802" composition="N(-3) 15N(3)">
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="15N" number="3"/>
         </umod:delta>
         <umod:alt_name>Metabolic labeling with ammonium sulfate (15N)</umod:alt_name>
         <umod:xref>
            <umod:text>19664813</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="sulfo+amino" full_name="aminotyrosine with sulfation"
                username_of_poster="huidouzi"
                group_of_poster=""
                date_time_posted="2010-06-23 18:50:14"
                date_time_modified="2010-06-28 10:29:52"
                approved="0"
                record_id="997">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="94.967714" avge_mass="95.0778" composition="H N O(3) S">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>amino_sulfate</umod:alt_name>
      </umod:mod>
      <umod:mod title="AHA-Alkyne"
                full_name="Azidohomoalanine (AHA) bound to propargylglycine-NH2 (alkyne)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-09-28 09:28:15"
                date_time_modified="2010-10-03 13:44:56"
                approved="0"
                record_id="1000">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="107.077339" avge_mass="107.0504"
                     composition="H(5) C(4) N(5) O S(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Dieterich DC et al., (2007) Labelling, detection and identification of newly synthesized proteomes with bioorthogonal non-canonical amino acid tagging. Nature Protocols 2(3): 532-40</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Methionine (C5H11NO2S) is substituted in culture with azidohomoalanine (AHA - C4H8N4O2). The azide group reacts with the alkyne group propargylglycine-NH2. As a result the side chain of methionine (C3H7S) is substituted by C7H12N5O.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="AHA-Alkyne-KDDDD"
                full_name="Azidohomoalanine (AHA) bound to DDDDK-propargylglycine-NH2 (alkyne)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-09-28 09:35:48"
                date_time_modified="2010-10-03 13:44:40"
                approved="0"
                record_id="1001">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="695.280074" avge_mass="695.5723"
                     composition="H(37) C(26) N(11) O(14) S(-1)">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="26"/>
            <umod:element symbol="N" number="11"/>
            <umod:element symbol="O" number="14"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Dieterich DC et al., (2007) Labeling, detection and identification of newly synthesized proteomes with bioorthogonal non-canonical amino acid tagging. Nature Protocols 2(3): 532-40.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Methionine (C5H11NO2S) is substituted in culture with azidohomoalanine (AHA - C4H8N4O2). The azide group reacts with the alkyne group DDDDK-propargylglycine-NH2. As a result the side chain of methionine (C3H7S) is substituted by C29H44N11O14.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="EGCG1" full_name="(-)-epigallocatechin-3-gallate"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2010-10-05 20:46:40"
                date_time_modified="2010-12-23 15:47:42"
                approved="0"
                record_id="1002">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="456.069261" avge_mass="456.3558" composition="H(16) C(22) O(11)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="22"/>
            <umod:element symbol="O" number="11"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18771724</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Bindu Abraham 2010-10-05</umod:misc_notes>
      </umod:mod>
      <umod:mod title="EGCG2" full_name="(-)-dehydroepigallocatechin"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2010-10-05 20:48:38"
                date_time_modified="2010-12-23 15:47:33"
                approved="0"
                record_id="1003">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="287.055563" avge_mass="287.2442" composition="H(11) C(15) O(6)">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="15"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18771724</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Bindu Abraham 2010-10-05</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(4)+Methyl" full_name="Monomethylated Arg13C(6) 15N(4)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-10-27 10:36:31"
                date_time_modified="2010-11-05 16:47:36"
                approved="0"
                record_id="1004">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="24.023919" avge_mass="23.9561"
                     composition="H(2) C(-5) 13C(6) N(-4) 15N(4)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(4)+Dimethyl" full_name="Dimethylated Arg13C(6) 15N(4)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-10-27 10:52:10"
                date_time_modified="2010-11-05 16:49:29"
                approved="0"
                record_id="1005">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="38.039569" avge_mass="37.9827"
                     composition="H(4) C(-4) 13C(6) N(-4) 15N(4)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(4)+Methyl:2H(3)13C(1)"
                full_name="2H(3) 13C(1) monomethylated Arg13C(6) 15N(4)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-10-27 10:59:21"
                date_time_modified="2010-11-05 16:53:21"
                approved="0"
                record_id="1006">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="28.046104" avge_mass="27.9673"
                     composition="H(-1) 2H(3) C(-6) 13C(7) N(-4) 15N(4)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="7"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2)"
                full_name="2H(6) 13C(2) Dimethylated Arg13C(6) 15N(4)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-10-27 11:07:29"
                date_time_modified="2010-11-05 16:54:24"
                approved="0"
                record_id="1007">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="46.083939" avge_mass="46.0050"
                     composition="H(-2) 2H(6) C(-6) 13C(8) N(-4) 15N(4)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="13C" number="8"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="SecCarbamidomethyl" full_name="Sec Iodoacetamide derivative"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-11-04 12:00:12"
                date_time_modified="2010-11-05 16:55:08"
                approved="0"
                record_id="1008">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="104.965913" avge_mass="103.9463"
                     composition="H(3) C(2) N O S(-1) Se">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
            <umod:element symbol="Se" number="1"/>
         </umod:delta>
         <umod:alt_name>Carboxyamidomethylation of selenocysteine</umod:alt_name>
         <umod:xref>
            <umod:text>18283440</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Thiazolidine" full_name="Addition of Carbon to cysteine"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2010-11-04 12:29:10"
                date_time_modified="2013-08-19 16:44:59"
                approved="0"
                record_id="1009">
         <umod:specificity hidden="1" site="C" position="Any N-term"
                           classification="Synth. pep. protect. gp."
                           spec_group="1"/>
         <umod:delta mono_mass="12.000000" avge_mass="12.0107" composition="C">
            <umod:element symbol="C" number="1"/>
         </umod:delta>
         <umod:alt_name>formaldehyde adduct</umod:alt_name>
         <umod:alt_name>thiazolidine-2-carboxylic acid</umod:alt_name>
         <umod:xref>
            <umod:text>65126-70-7</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Formation of E-Formyllysine on Silver-stained Proteins</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1074/mcp.M600279-MCP200</umod:url>
         </umod:xref>
         <umod:misc_notes>formaldeyde induced formation of thioproline</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DEDGFLYMVYASQETFG" full_name="Addition of DEDGFLYMVYASQETFG"
                username_of_poster="hbromage"
                group_of_poster=""
                date_time_posted="2010-11-04 17:27:46"
                date_time_modified="2010-11-24 18:00:09"
                approved="0"
                record_id="1010">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:NeutralLoss mono_mass="18.010565" avge_mass="18.0153" flag="false" composition="Water">
               <umod:element symbol="H" number="2"/>
               <umod:element symbol="O" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="1970.824411" avge_mass="1972.0880"
                     composition="H(122) C(89) N(18) O(31) S">
            <umod:element symbol="H" number="122"/>
            <umod:element symbol="C" number="89"/>
            <umod:element symbol="N" number="18"/>
            <umod:element symbol="O" number="31"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Biotin:Invitrogen-M1602"
                full_name="Nalpha-(3-maleimidylpropionyl)biocytin"
                username_of_poster="camoin"
                group_of_poster=""
                date_time_posted="2010-11-16 10:11:53"
                date_time_modified="2010-12-03 15:58:11"
                approved="0"
                record_id="1012">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="523.210069" avge_mass="523.6024"
                     composition="H(33) C(23) N(5) O(7) S">
            <umod:element symbol="H" number="33"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Reference M1602 Invitrogen</umod:alt_name>
         <umod:xref>
            <umod:text>Invitrogen data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://products.invitrogen.com/ivgn/product/M1602?ICID=search-m1602</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:DSS"
                full_name="Monolink of DSS/BS3 crosslinker to Lys or N-terminus"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-07 14:20:22"
                date_time_modified="2011-02-11 14:33:33"
                approved="0"
                record_id="1020">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="156.078644" avge_mass="156.1791" composition="H(12) C(8) O(3)">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>8326953</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=8326953</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DMPO" full_name="DMPO spin-trap nitrone adduct"
                username_of_poster="hooverdm"
                group_of_poster=""
                date_time_posted="2011-01-25 18:30:32"
                date_time_modified="2011-02-28 17:17:57"
                approved="0"
                record_id="1017">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="111.068414" avge_mass="111.1418" composition="H(9) C(6) N O">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18160050</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>17637042</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created for Bindu Abraham 2011-01-25</umod:misc_notes>
      </umod:mod>
      <umod:mod title="glycidamide" full_name="glycidamide adduct" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2010-12-21 17:00:41"
                date_time_modified="2010-12-21 17:00:41"
                approved="0"
                record_id="1014">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="87.032028" avge_mass="87.0773" composition="H(5) C(3) N O(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>C.-H. Feng, C.-Y. Lu, Analytica Chimica Acta 684 (2011) 80–86</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1016/j.aca.2010.10.042</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ahx2+Hsl"
                full_name="C-terminal homoserine lactone and two aminohexanoic acids"
                username_of_poster="kpkent"
                group_of_poster=""
                date_time_posted="2010-12-22 10:13:01"
                date_time_modified="2011-01-07 17:06:08"
                approved="0"
                record_id="1015">
         <umod:specificity hidden="1" site="C-term" position="Any C-term"
                           classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="309.205242" avge_mass="309.4039" composition="H(27) C(16) N(3) O(3)">
            <umod:element symbol="H" number="27"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Ahx residues were incroporated by Fmoc synthesis, the reagent has a part number of 852053.</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.emdchemicals.com/life-science-research/fmoc-epsilon-ahx-oh/EMD_BIO-852053/p_uuid?WT_oss=852053&amp;WT_oss_r=1</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICDID" full_name="Isotope-Coded Dimedone light form"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-02-02 17:23:34"
                date_time_modified="2011-02-02 17:23:34"
                approved="0"
                record_id="1018">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="138.068080" avge_mass="138.1638" composition="H(10) C(8) O(2)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Quantification of Protein Sulfenic Acid Modifications Using Isotope-Coded Dimedone and Iododimedone</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/anie.201007175</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="ICDID:2H(6)" full_name="Isotope-Coded Dimedone heavy form"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-02-02 17:24:45"
                date_time_modified="2011-02-02 17:24:45"
                approved="0"
                record_id="1019">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="144.105740" avge_mass="144.2008" composition="H(4) 2H(6) C(8) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Quantification of Protein Sulfenic Acid Modifications Using Isotope-Coded Dimedone and Iododimedone</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/anie.201007175</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:EGS" full_name="Monolink of EGS crosslinker to Lys or N-terminus"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-07 17:40:36"
                date_time_modified="2011-02-11 14:33:05"
                approved="0"
                record_id="1021">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="244.058303" avge_mass="244.1981" composition="H(12) C(10) O(7)">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:xref>
            <umod:text>36892</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=A%20new%20cleavable%20reagent%20for%20cross-linking%20and%20reversible%20immobilization%20of%20proteins</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:DST" full_name="Monolink of DST crosslinker to Lys or N-terminus"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-07 18:02:58"
                date_time_modified="2011-02-11 14:32:52"
                approved="0"
                record_id="1022">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="132.005873" avge_mass="132.0716" composition="H(4) C(4) O(5)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>3001048</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=Characterization%20of%20the%20cell%20surface%20receptor%20for%20a%20multi-lineage%20colony-stimulating%20factor%20%28CSF-2%20%29</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>212103</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/212103</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:DTSSP"
                full_name="Monolink of DSP/DTSSP crosslinker to Lys or N-terminus"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-07 18:22:31"
                date_time_modified="2011-02-11 14:32:42"
                approved="0"
                record_id="1023">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="191.991486" avge_mass="192.2559" composition="H(8) C(6) O(3) S(2)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>1262347</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/1262347</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>322714</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/322714</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>8457554</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/8457554</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:SMCC" full_name="Monolink of sulfoSMCC/SMCC crosslinker to Cys"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-07 19:33:39"
                date_time_modified="2011-02-11 14:32:28"
                approved="0"
                record_id="1024">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="237.100108" avge_mass="237.2518" composition="H(15) C(12) N O(4)">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>1931231</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/1931231</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>6490581</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=6490581</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="2-nitrobenzyl" full_name="Tyrosine caged with 2-nitrobenzyl (ONB)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-03-14 10:56:33"
                date_time_modified="2011-03-18 13:39:54"
                approved="0"
                record_id="1032">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="135.032028" avge_mass="135.1201" composition="H(5) C(7) N O(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>16548032</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:DMP-de"
                full_name="Monolink of DMP crosslinker to Lys or N-terminus"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-25 16:18:13"
                date_time_modified="2011-03-04 11:06:19"
                approved="0"
                record_id="1027">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="140.094963" avge_mass="140.1830" composition="H(12) C(7) N(2) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Dimethyl pimelimidate dead-end crosslink</umod:alt_name>
         <umod:xref>
            <umod:text>2144419</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=Macromolecular%20association%20of%20ADP-ribosyltransferase%20and%20its%20correlation%20with%20enzymic%20activity</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>14696200</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=Chemical%20cross-linking%20and%20mass%20spectrometry%20for%20mapping%20three-dimensional%20structures%20of%20proteins%20and%20protein%20complexes</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Xlink:EGScleaved"
                full_name="EGS crosslinker to Lys or N-terminus following hydroxylamine cleavage"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2011-02-25 17:16:45"
                date_time_modified="2011-03-04 10:43:22"
                approved="0"
                record_id="1028">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="99.032028" avge_mass="99.0880" composition="H(5) C(4) N O(2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Cleavage product of EGS protein crosslinks by hydroylamine treatment</umod:alt_name>
         <umod:xref>
            <umod:text>36892</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed?term=a%20new%20cleavable%20reagent%20for%20cross-linking%20and%20reversible%20immobilization</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SecNEM" full_name="N-ethylmaleimide on selenocysteines"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2011-03-31 18:29:45"
                date_time_modified="2011-03-31 18:41:41"
                approved="0"
                record_id="1033">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:delta mono_mass="172.992127" avge_mass="172.0203"
                     composition="H(7) C(6) N O(2) S(-1) Se">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
            <umod:element symbol="Se" number="1"/>
         </umod:delta>
         <umod:alt_name>SecNEM</umod:alt_name>
         <umod:xref>
            <umod:text>18283440</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12777388</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>11813307</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>reaction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemistry.ucsc.edu/~fink/231/Image118.gif</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SecNEM:2H(5)" full_name="D5 N-ethylmaleimide on selenocysteines"
                username_of_poster="mpcusack"
                group_of_poster=""
                date_time_posted="2011-03-31 18:32:32"
                date_time_modified="2011-03-31 18:41:50"
                approved="0"
                record_id="1034">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="178.023511" avge_mass="177.0511"
                     composition="H(2) 2H(5) C(6) N O(2) S(-1) Se">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
            <umod:element symbol="Se" number="1"/>
         </umod:delta>
         <umod:alt_name>SecNEM D5</umod:alt_name>
         <umod:xref>
            <umod:text>11813307</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>12777388</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>reaction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemistry.ucsc.edu/~fink/231/Image118.gif</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>18283440</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Thiadiazole" full_name="Thiadiazolydation of Cys"
                username_of_poster="cbatthya"
                group_of_poster=""
                date_time_posted="2011-04-01 16:26:52"
                date_time_modified="2011-04-08 16:38:12"
                approved="0"
                record_id="1035">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="174.025169" avge_mass="174.2223" composition="H(6) C(9) N(2) S">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-88310" full_name="desthiobiotin modification of lysine"
                username_of_poster="rbomgard"
                group_of_poster=""
                date_time_posted="2011-03-02 20:33:20"
                date_time_modified="2011-03-18 13:44:07"
                approved="0"
                record_id="1031">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="196.121178" avge_mass="196.2462" composition="H(16) C(10) N(2) O(2)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>desthiobiotin-ATP</umod:alt_name>
         <umod:alt_name>desthiobiotin-ADP</umod:alt_name>
         <umod:alt_name>desthiobiotin-GTP</umod:alt_name>
         <umod:xref>
            <umod:text>Patricelli, M.P., et al. (2007). Functional interrogation of the kinome using nucleotide acyl phosphates. Biochemistry 46:350-8</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Kinase Enrichment Kits and Probes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=3D3869A6-C21A-B057-1746-32B318A394B1</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>GTPase Enrichment Kit and Probes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=A3E85706-9C15-11DA-341A-2C8A2849EA03</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="TAMRA-FP" full_name="TAMRA fluorophosphonate modification of serine"
                username_of_poster="rbomgard"
                group_of_poster=""
                date_time_posted="2011-05-06 20:03:27"
                date_time_modified="2011-05-09 16:01:57"
                approved="0"
                record_id="1038">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="659.312423" avge_mass="659.7514"
                     composition="H(46) C(37) N(3) O(6) P">
            <umod:element symbol="H" number="46"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>ActivX TAMRA-FP Serine Hydrolase Probe</umod:alt_name>
         <umod:alt_name>TAMRA-alkyl-FP</umod:alt_name>
         <umod:xref>
            <umod:text>Serine Hydrolase Probes</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=0842EF3A-D867-AEA2-6E77-E84116CAA87C</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Liu, Patricelli and Cravatt. (1999) Activity-based protein profiling: The serine hydrolases. Proc Natl Acad Sci USA 96:14694-14699</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Okerberg, E.S., et al. (2005). High-resolution functional proteomics by active-site peptide profiling. Proc Natl Acad Sci USA 102(14):4996-5001.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>TAMRA-FP was designed to label the active site serine of serine hydrolases (e.g. esterases, peptidases, lipases)</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21901+H2O" full_name="Maleimide-Biotin + Water"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-05-18 16:28:42"
                date_time_modified="2011-05-25 16:02:07"
                approved="0"
                record_id="1039">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="543.236284" avge_mass="543.6336"
                     composition="H(37) C(23) N(5) O(8) S">
            <umod:element symbol="H" number="37"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Maleimide-PEG2-Biotin + Water</umod:alt_name>
         <umod:xref>
            <umod:text>Lab observation analagous to hydrolysis of N-Ethylmaleimide</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/Products/Browse.cfm?fldID=01031005</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Deoxyhypusine" full_name="Deoxyhypusine" username_of_poster="cbarrero"
                group_of_poster=""
                date_time_posted="2011-06-15 12:04:35"
                date_time_modified="2011-06-25 03:09:15"
                approved="0"
                record_id="1041">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="71.073499" avge_mass="71.1210" composition="H(9) C(4) N">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10542236</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>20942800</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Deoxyhypusine synthase catalyzes the formation of a deoxyhypusine by transferring an aminobutyl moiety from spermidine onto a conserved lysine residue within the eIF5A</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Acetyldeoxyhypusine" full_name="Acetyldeoxyhypusine"
                username_of_poster="cbarrero"
                group_of_poster=""
                date_time_posted="2011-06-18 04:14:19"
                date_time_modified="2011-06-25 03:10:45"
                approved="0"
                record_id="1042">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="97.089149" avge_mass="97.1582" composition="H(11) C(6) N">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>20942800</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Regulation of eIF5A by deoxyhypusine acetylation/deacetylation</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Acetylhypusine" full_name="Acetylhypusine" username_of_poster="cbarrero"
                group_of_poster=""
                date_time_posted="2011-06-18 04:16:59"
                date_time_modified="2011-06-25 03:11:31"
                approved="0"
                record_id="1043">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="113.084064" avge_mass="113.1576" composition="H(11) C(6) N O">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>20942800</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Regulation of eIF5A by hypusine acetylation/deacetylation</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ala-&gt;Cys" full_name="Ala-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:49:30"
                date_time_modified="2011-06-20 16:49:30"
                approved="0"
                record_id="1044">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="31.972071" avge_mass="32.0650" composition="S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Phe" full_name="Ala-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:50:25"
                date_time_modified="2011-06-20 16:50:25"
                approved="0"
                record_id="1045">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="76.031300" avge_mass="76.0960" composition="H(4) C(6)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;His" full_name="Ala-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:56:21"
                date_time_modified="2011-06-20 16:56:21"
                approved="0"
                record_id="1046">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="66.021798" avge_mass="66.0614" composition="H(2) C(3) N(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Xle" full_name="Ala-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:57:10"
                date_time_modified="2011-06-21 15:12:27"
                approved="0"
                record_id="1047">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="42.046950" avge_mass="42.0797" composition="H(6) C(3)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Lys" full_name="Ala-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:57:37"
                date_time_modified="2011-06-20 16:57:37"
                approved="0"
                record_id="1048">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.057849" avge_mass="57.0944" composition="H(7) C(3) N">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Met" full_name="Ala-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:58:05"
                date_time_modified="2011-06-20 16:58:05"
                approved="0"
                record_id="1049">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="60.003371" avge_mass="60.1182" composition="H(4) C(2) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Asn" full_name="Ala-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:58:32"
                date_time_modified="2011-06-20 16:58:32"
                approved="0"
                record_id="1050">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="43.005814" avge_mass="43.0247" composition="H C N O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Gln" full_name="Ala-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:58:56"
                date_time_modified="2011-06-20 16:58:56"
                approved="0"
                record_id="1051">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.021464" avge_mass="57.0513" composition="H(3) C(2) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Arg" full_name="Ala-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:59:22"
                date_time_modified="2011-06-20 16:59:22"
                approved="0"
                record_id="1052">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="85.063997" avge_mass="85.1078" composition="H(7) C(3) N(3)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Trp" full_name="Ala-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 16:59:45"
                date_time_modified="2011-06-20 16:59:45"
                approved="0"
                record_id="1053">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="115.042199" avge_mass="115.1320" composition="H(5) C(8) N">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ala-&gt;Tyr" full_name="Ala-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:00:09"
                date_time_modified="2011-06-20 17:00:09"
                approved="0"
                record_id="1054">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="92.026215" avge_mass="92.0954" composition="H(4) C(6) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Ala" full_name="Cys-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:26:22"
                date_time_modified="2011-06-20 17:26:22"
                approved="0"
                record_id="1055">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-31.972071" avge_mass="-32.0650" composition="S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Asp" full_name="Cys-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:26:57"
                date_time_modified="2011-06-20 17:26:57"
                approved="0"
                record_id="1056">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="12.017759" avge_mass="11.9445" composition="C O(2) S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Glu" full_name="Cys-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:27:25"
                date_time_modified="2011-06-20 17:27:25"
                approved="0"
                record_id="1057">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="26.033409" avge_mass="25.9711" composition="H(2) C(2) O(2) S(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;His" full_name="Cys-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:27:48"
                date_time_modified="2011-06-20 17:27:48"
                approved="0"
                record_id="1058">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="34.049727" avge_mass="33.9964" composition="H(2) C(3) N(2) S(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Xle" full_name="Cys-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:28:11"
                date_time_modified="2011-06-21 15:14:49"
                approved="0"
                record_id="1059">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="10.074880" avge_mass="10.0147" composition="H(6) C(3) S(-1)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Lys" full_name="Cys-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:28:36"
                date_time_modified="2011-06-20 17:28:36"
                approved="0"
                record_id="1060">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="25.085779" avge_mass="25.0294" composition="H(7) C(3) N S(-1)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Met" full_name="Cys-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:29:04"
                date_time_modified="2011-06-20 17:29:04"
                approved="0"
                record_id="1061">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="28.031300" avge_mass="28.0532" composition="H(4) C(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Asn" full_name="Cys-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:29:28"
                date_time_modified="2011-06-20 17:29:28"
                approved="0"
                record_id="1062">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="11.033743" avge_mass="10.9597" composition="H C N O S(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Pro" full_name="Cys-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:29:55"
                date_time_modified="2011-06-20 17:29:55"
                approved="0"
                record_id="1063">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-5.956421" avge_mass="-6.0277" composition="H(2) C(2) S(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Gln" full_name="Cys-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:30:19"
                date_time_modified="2011-06-20 17:30:19"
                approved="0"
                record_id="1064">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="25.049393" avge_mass="24.9863" composition="H(3) C(2) N O S(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Thr" full_name="Cys-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:30:53"
                date_time_modified="2011-06-20 17:30:53"
                approved="0"
                record_id="1065">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.961506" avge_mass="-2.0390" composition="H(2) C O S(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Cys-&gt;Val" full_name="Cys-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:31:23"
                date_time_modified="2011-06-20 17:31:23"
                approved="0"
                record_id="1066">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-3.940771" avge_mass="-4.0118" composition="H(4) C(2) S(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Cys" full_name="Asp-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:40:11"
                date_time_modified="2011-06-20 17:40:11"
                approved="0"
                record_id="1067">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-12.017759" avge_mass="-11.9445" composition="C(-1) O(-2) S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Phe" full_name="Asp-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:40:35"
                date_time_modified="2011-06-20 17:40:35"
                approved="0"
                record_id="1068">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="32.041471" avge_mass="32.0865" composition="H(4) C(5) O(-2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Xle" full_name="Asp-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:41:00"
                date_time_modified="2011-06-21 15:14:23"
                approved="0"
                record_id="1069">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.942879" avge_mass="-1.9298" composition="H(6) C(2) O(-2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="O" number="-2"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Lys" full_name="Asp-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:41:26"
                date_time_modified="2011-06-20 17:41:26"
                approved="0"
                record_id="1070">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="13.068020" avge_mass="13.0849" composition="H(7) C(2) N O(-2)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Met" full_name="Asp-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:41:51"
                date_time_modified="2011-06-20 17:41:51"
                approved="0"
                record_id="1071">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="16.013542" avge_mass="16.1087" composition="H(4) C O(-2) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Pro" full_name="Asp-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:42:17"
                date_time_modified="2011-06-20 17:42:17"
                approved="0"
                record_id="1072">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-17.974179" avge_mass="-17.9722" composition="H(2) C O(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Gln" full_name="Asp-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:42:41"
                date_time_modified="2011-06-20 17:42:41"
                approved="0"
                record_id="1073">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="13.031634" avge_mass="13.0418" composition="H(3) C N O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Arg" full_name="Asp-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:43:03"
                date_time_modified="2011-06-20 17:43:03"
                approved="0"
                record_id="1074">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="41.074168" avge_mass="41.0983" composition="H(7) C(2) N(3) O(-2)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Ser" full_name="Asp-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:43:25"
                date_time_modified="2011-06-20 17:43:25"
                approved="0"
                record_id="1075">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.994915" avge_mass="-28.0101" composition="C(-1) O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Thr" full_name="Asp-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:43:51"
                date_time_modified="2011-06-20 17:43:51"
                approved="0"
                record_id="1076">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-13.979265" avge_mass="-13.9835" composition="H(2) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asp-&gt;Trp" full_name="Asp-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-20 17:44:16"
                date_time_modified="2011-06-20 17:44:16"
                approved="0"
                record_id="1077">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="71.052370" avge_mass="71.1225" composition="H(5) C(7) N O(-2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Cys" full_name="Glu-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:00:46"
                date_time_modified="2011-06-21 12:00:47"
                approved="0"
                record_id="1078">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-26.033409" avge_mass="-25.9711" composition="H(-2) C(-2) O(-2) S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Phe" full_name="Glu-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:01:12"
                date_time_modified="2011-06-21 12:01:12"
                approved="0"
                record_id="1079">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="18.025821" avge_mass="18.0599" composition="H(2) C(4) O(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;His" full_name="Glu-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:01:42"
                date_time_modified="2011-06-21 12:01:42"
                approved="0"
                record_id="1080">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="8.016319" avge_mass="8.0253" composition="C N(2) O(-2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Xle" full_name="Glu-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:02:09"
                date_time_modified="2011-06-21 15:15:18"
                approved="0"
                record_id="1081">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-15.958529" avge_mass="-15.9563" composition="H(4) C O(-2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="-2"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Met" full_name="Glu-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:02:35"
                date_time_modified="2011-06-21 12:02:35"
                approved="0"
                record_id="1082">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="1.997892" avge_mass="2.0821" composition="H(2) O(-2) S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Asn" full_name="Glu-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:03:01"
                date_time_modified="2011-06-21 12:03:01"
                approved="0"
                record_id="1083">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.999666" avge_mass="-15.0113" composition="H(-1) C(-1) N O(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Pro" full_name="Glu-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:03:25"
                date_time_modified="2011-06-21 12:03:25"
                approved="0"
                record_id="1084">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-31.989829" avge_mass="-31.9988" composition="O(-2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Arg" full_name="Glu-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:03:48"
                date_time_modified="2011-06-21 12:03:48"
                approved="0"
                record_id="1085">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.058518" avge_mass="27.0717" composition="H(5) C N(3) O(-2)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Ser" full_name="Glu-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:04:12"
                date_time_modified="2011-06-21 12:04:12"
                approved="0"
                record_id="1086">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-42.010565" avge_mass="-42.0367" composition="H(-2) C(-2) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Thr" full_name="Glu-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:04:38"
                date_time_modified="2011-06-21 12:04:38"
                approved="0"
                record_id="1087">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.994915" avge_mass="-28.0101" composition="C(-1) O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Trp" full_name="Glu-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:05:01"
                date_time_modified="2011-06-21 12:05:01"
                approved="0"
                record_id="1088">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.036720" avge_mass="57.0959" composition="H(3) C(6) N O(-2)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Glu-&gt;Tyr" full_name="Glu-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 12:05:23"
                date_time_modified="2011-06-21 12:05:23"
                approved="0"
                record_id="1089">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="34.020735" avge_mass="34.0593" composition="H(2) C(4) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Ala" full_name="Phe-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:41:15"
                date_time_modified="2011-06-21 13:41:15"
                approved="0"
                record_id="1090">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-76.031300" avge_mass="-76.0960" composition="H(-4) C(-6)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Asp" full_name="Phe-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:41:48"
                date_time_modified="2011-06-21 13:41:48"
                approved="0"
                record_id="1091">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-32.041471" avge_mass="-32.0865" composition="H(-4) C(-5) O(2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Glu" full_name="Phe-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:56:57"
                date_time_modified="2011-06-21 13:56:57"
                approved="0"
                record_id="1092">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-18.025821" avge_mass="-18.0599" composition="H(-2) C(-4) O(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Gly" full_name="Phe-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:57:23"
                date_time_modified="2011-06-21 13:57:23"
                approved="0"
                record_id="1093">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-90.046950" avge_mass="-90.1225" composition="H(-6) C(-7)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;His" full_name="Phe-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:57:45"
                date_time_modified="2011-06-21 13:57:45"
                approved="0"
                record_id="1094">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-10.009502" avge_mass="-10.0346" composition="H(-2) C(-3) N(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Lys" full_name="Phe-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:58:10"
                date_time_modified="2011-06-21 13:58:10"
                approved="0"
                record_id="1095">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-18.973451" avge_mass="-19.0016" composition="H(3) C(-3) N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Met" full_name="Phe-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:58:32"
                date_time_modified="2011-06-21 13:58:32"
                approved="0"
                record_id="1096">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-16.027929" avge_mass="-15.9778" composition="C(-4) S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Asn" full_name="Phe-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:58:57"
                date_time_modified="2011-06-21 13:58:57"
                approved="0"
                record_id="1097">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-33.025486" avge_mass="-33.0712" composition="H(-3) C(-5) N O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Pro" full_name="Phe-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:59:19"
                date_time_modified="2011-06-21 13:59:19"
                approved="0"
                record_id="1098">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-50.015650" avge_mass="-50.0587" composition="H(-2) C(-4)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Gln" full_name="Phe-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 13:59:42"
                date_time_modified="2011-06-21 13:59:42"
                approved="0"
                record_id="1099">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-19.009836" avge_mass="-19.0446" composition="H(-1) C(-4) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Arg" full_name="Phe-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:00:05"
                date_time_modified="2011-06-21 14:00:05"
                approved="0"
                record_id="1100">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="9.032697" avge_mass="9.0118" composition="H(3) C(-3) N(3)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Thr" full_name="Phe-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:00:30"
                date_time_modified="2011-06-21 14:00:30"
                approved="0"
                record_id="1101">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-46.020735" avge_mass="-46.0700" composition="H(-2) C(-5) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Phe-&gt;Trp" full_name="Phe-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:00:53"
                date_time_modified="2011-06-21 14:00:53"
                approved="0"
                record_id="1102">
         <umod:specificity hidden="1" site="F" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="39.010899" avge_mass="39.0360" composition="H C(2) N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Phe" full_name="Gly-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:03:41"
                date_time_modified="2011-06-21 14:03:41"
                approved="0"
                record_id="1103">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="90.046950" avge_mass="90.1225" composition="H(6) C(7)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;His" full_name="Gly-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:04:05"
                date_time_modified="2011-06-21 14:04:05"
                approved="0"
                record_id="1104">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="80.037448" avge_mass="80.0880" composition="H(4) C(4) N(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Xle" full_name="Gly-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:04:27"
                date_time_modified="2011-06-21 15:15:58"
                approved="0"
                record_id="1105">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="56.062600" avge_mass="56.1063" composition="H(8) C(4)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Lys" full_name="Gly-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:04:51"
                date_time_modified="2011-06-21 14:04:51"
                approved="0"
                record_id="1106">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="71.073499" avge_mass="71.1210" composition="H(9) C(4) N">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Met" full_name="Gly-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:05:16"
                date_time_modified="2011-06-21 14:05:16"
                approved="0"
                record_id="1107">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="74.019021" avge_mass="74.1447" composition="H(6) C(3) S">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Asn" full_name="Gly-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:05:35"
                date_time_modified="2011-06-21 14:05:35"
                approved="0"
                record_id="1108">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.021464" avge_mass="57.0513" composition="H(3) C(2) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Pro" full_name="Gly-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:05:55"
                date_time_modified="2011-06-21 14:05:55"
                approved="0"
                record_id="1109">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="40.031300" avge_mass="40.0639" composition="H(4) C(3)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Gln" full_name="Gly-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:06:16"
                date_time_modified="2011-06-21 14:06:16"
                approved="0"
                record_id="1110">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="71.037114" avge_mass="71.0779" composition="H(5) C(3) N O">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Thr" full_name="Gly-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:06:40"
                date_time_modified="2011-06-21 14:06:40"
                approved="0"
                record_id="1111">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="44.026215" avge_mass="44.0526" composition="H(4) C(2) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gly-&gt;Tyr" full_name="Gly-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:07:05"
                date_time_modified="2011-06-21 14:07:05"
                approved="0"
                record_id="1112">
         <umod:specificity hidden="1" site="G" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="106.041865" avge_mass="106.1219" composition="H(6) C(7) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Ala" full_name="His-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:51:31"
                date_time_modified="2011-06-21 14:51:31"
                approved="0"
                record_id="1113">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-66.021798" avge_mass="-66.0614" composition="H(-2) C(-3) N(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Cys" full_name="His-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:51:56"
                date_time_modified="2011-06-21 14:51:56"
                approved="0"
                record_id="1114">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-34.049727" avge_mass="-33.9964" composition="H(-2) C(-3) N(-2) S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Glu" full_name="His-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:52:16"
                date_time_modified="2011-06-21 14:52:16"
                approved="0"
                record_id="1115">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-8.016319" avge_mass="-8.0253" composition="C(-1) N(-2) O(2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Phe" full_name="His-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:52:50"
                date_time_modified="2011-06-21 14:52:50"
                approved="0"
                record_id="1116">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="10.009502" avge_mass="10.0346" composition="H(2) C(3) N(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Gly" full_name="His-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:53:45"
                date_time_modified="2011-06-21 14:53:45"
                approved="0"
                record_id="1117">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-80.037448" avge_mass="-80.0880" composition="H(-4) C(-4) N(-2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Lys" full_name="His-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:59:08"
                date_time_modified="2011-06-21 14:59:08"
                approved="0"
                record_id="1119">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-8.963949" avge_mass="-8.9670" composition="H(5) N(-1)">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Met" full_name="His-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:59:30"
                date_time_modified="2011-06-21 14:59:30"
                approved="0"
                record_id="1120">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-6.018427" avge_mass="-5.9432" composition="H(2) C(-1) N(-2) S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Ser" full_name="His-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 14:59:50"
                date_time_modified="2011-06-21 14:59:50"
                approved="0"
                record_id="1121">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-50.026883" avge_mass="-50.0620" composition="H(-2) C(-3) N(-2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Thr" full_name="His-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:00:20"
                date_time_modified="2011-06-21 15:00:20"
                approved="0"
                record_id="1122">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-36.011233" avge_mass="-36.0354" composition="C(-2) N(-2) O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Val" full_name="His-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:00:41"
                date_time_modified="2011-06-21 15:00:41"
                approved="0"
                record_id="1123">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-37.990498" avge_mass="-38.0082" composition="H(2) C(-1) N(-2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="His-&gt;Trp" full_name="His-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:01:02"
                date_time_modified="2011-06-21 15:01:02"
                approved="0"
                record_id="1124">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="49.020401" avge_mass="49.0706" composition="H(3) C(5) N(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Xle-&gt;Cys" full_name="Leu/Ile-&gt;Cys substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:33:43"
                date_time_modified="2011-06-21 15:33:44"
                approved="0"
                record_id="1126">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="-10.074880" avge_mass="-10.0147" composition="H(-6) C(-3) S">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Asp" full_name="Leu/Ile-&gt;Asp substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:34:14"
                date_time_modified="2011-06-21 15:34:14"
                approved="0"
                record_id="1127">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="1.942879" avge_mass="1.9298" composition="H(-6) C(-2) O(2)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Glu" full_name="Leu/Ile-&gt;Glu substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:34:40"
                date_time_modified="2011-06-21 15:34:40"
                approved="0"
                record_id="1128">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="15.958529" avge_mass="15.9563" composition="H(-4) C(-1) O(2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Gly" full_name="Leu/Ile-&gt;Gly substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:35:12"
                date_time_modified="2011-06-21 15:35:12"
                approved="0"
                record_id="1129">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="-56.062600" avge_mass="-56.1063" composition="H(-8) C(-4)">
            <umod:element symbol="H" number="-8"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Xle-&gt;Tyr" full_name="Leu/Ile-&gt;Tyr substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:35:36"
                date_time_modified="2011-06-21 15:35:36"
                approved="0"
                record_id="1130">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="I" position="Anywhere" classification="AA substitution"
                           spec_group="2"/>
         <umod:delta mono_mass="49.979265" avge_mass="50.0156" composition="H(-2) C(3) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Lys-&gt;Ala" full_name="Lys-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 15:37:25"
                date_time_modified="2011-06-21 15:37:25"
                approved="0"
                record_id="1131">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.057849" avge_mass="-57.0944" composition="H(-7) C(-3) N(-1)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Cys" full_name="Lys-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:01:01"
                date_time_modified="2011-06-21 16:01:01"
                approved="0"
                record_id="1132">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-25.085779" avge_mass="-25.0294" composition="H(-7) C(-3) N(-1) S">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Asp" full_name="Lys-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:01:33"
                date_time_modified="2011-06-21 16:01:33"
                approved="0"
                record_id="1133">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-13.068020" avge_mass="-13.0849"
                     composition="H(-7) C(-2) N(-1) O(2)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Phe" full_name="Lys-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:01:56"
                date_time_modified="2011-06-21 16:01:56"
                approved="0"
                record_id="1134">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="18.973451" avge_mass="19.0016" composition="H(-3) C(3) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Gly" full_name="Lys-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:02:20"
                date_time_modified="2011-06-21 16:02:20"
                approved="0"
                record_id="1135">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-71.073499" avge_mass="-71.1210" composition="H(-9) C(-4) N(-1)">
            <umod:element symbol="H" number="-9"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;His" full_name="Lys-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:02:42"
                date_time_modified="2011-06-21 16:02:42"
                approved="0"
                record_id="1136">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="8.963949" avge_mass="8.9670" composition="H(-5) N">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Pro" full_name="Lys-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:03:06"
                date_time_modified="2011-06-21 16:03:06"
                approved="0"
                record_id="1137">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-31.042199" avge_mass="-31.0571" composition="H(-5) C(-1) N(-1)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Ser" full_name="Lys-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:03:27"
                date_time_modified="2011-06-21 16:03:27"
                approved="0"
                record_id="1138">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-41.062935" avge_mass="-41.0950" composition="H(-7) C(-3) N(-1) O">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Val" full_name="Lys-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:03:49"
                date_time_modified="2011-06-21 16:03:49"
                approved="0"
                record_id="1139">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-29.026549" avge_mass="-29.0412" composition="H(-3) C(-1) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Trp" full_name="Lys-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:04:11"
                date_time_modified="2011-06-21 16:04:11"
                approved="0"
                record_id="1140">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.984350" avge_mass="58.0376" composition="H(-2) C(5)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Lys-&gt;Tyr" full_name="Lys-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:04:35"
                date_time_modified="2011-06-21 16:04:35"
                approved="0"
                record_id="1141">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="34.968366" avge_mass="35.0010" composition="H(-3) C(3) N(-1) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Ala" full_name="Met-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:28:27"
                date_time_modified="2011-06-21 16:28:27"
                approved="0"
                record_id="1142">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-60.003371" avge_mass="-60.1182" composition="H(-4) C(-2) S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Cys" full_name="Met-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:28:53"
                date_time_modified="2011-06-21 16:28:53"
                approved="0"
                record_id="1143">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-28.031300" avge_mass="-28.0532" composition="H(-4) C(-2)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Asp" full_name="Met-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:29:13"
                date_time_modified="2011-06-21 16:29:13"
                approved="0"
                record_id="1144">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-16.013542" avge_mass="-16.1087"
                     composition="H(-4) C(-1) O(2) S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Glu" full_name="Met-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:29:35"
                date_time_modified="2011-06-21 16:29:35"
                approved="0"
                record_id="1145">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.997892" avge_mass="-2.0821" composition="H(-2) O(2) S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Phe" full_name="Met-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:30:07"
                date_time_modified="2011-06-21 16:30:07"
                approved="0"
                record_id="1146">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="16.027929" avge_mass="15.9778" composition="C(4) S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Gly" full_name="Met-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:30:29"
                date_time_modified="2011-06-21 16:30:29"
                approved="0"
                record_id="1147">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-74.019021" avge_mass="-74.1447" composition="H(-6) C(-3) S(-1)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;His" full_name="Met-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:30:50"
                date_time_modified="2011-06-21 16:30:50"
                approved="0"
                record_id="1148">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="6.018427" avge_mass="5.9432" composition="H(-2) C N(2) S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Asn" full_name="Met-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:31:14"
                date_time_modified="2011-06-21 16:31:14"
                approved="0"
                record_id="1149">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-16.997557" avge_mass="-17.0934" composition="H(-3) C(-1) N O S(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Pro" full_name="Met-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:31:34"
                date_time_modified="2011-06-21 16:31:34"
                approved="0"
                record_id="1150">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-33.987721" avge_mass="-34.0809" composition="H(-2) S(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Gln" full_name="Met-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:31:55"
                date_time_modified="2011-06-21 16:31:55"
                approved="0"
                record_id="1151">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-2.981907" avge_mass="-3.0668" composition="H(-1) N O S(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Ser" full_name="Met-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:32:16"
                date_time_modified="2011-06-21 16:32:16"
                approved="0"
                record_id="1152">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-44.008456" avge_mass="-44.1188" composition="H(-4) C(-2) O S(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Trp" full_name="Met-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:32:38"
                date_time_modified="2011-06-21 16:32:38"
                approved="0"
                record_id="1153">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="55.038828" avge_mass="55.0138" composition="H C(6) N S(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Met-&gt;Tyr" full_name="Met-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:33:00"
                date_time_modified="2011-06-21 16:33:00"
                approved="0"
                record_id="1154">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="32.022844" avge_mass="31.9772" composition="C(4) O S(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="-1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Ala" full_name="Asn-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:36:38"
                date_time_modified="2011-06-21 16:36:38"
                approved="0"
                record_id="1155">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-43.005814" avge_mass="-43.0247"
                     composition="H(-1) C(-1) N(-1) O(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Cys" full_name="Asn-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:37:03"
                date_time_modified="2011-06-21 16:37:03"
                approved="0"
                record_id="1156">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-11.033743" avge_mass="-10.9597"
                     composition="H(-1) C(-1) N(-1) O(-1) S">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Glu" full_name="Asn-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:37:26"
                date_time_modified="2011-06-21 16:37:26"
                approved="0"
                record_id="1157">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.999666" avge_mass="15.0113" composition="H C N(-1) O">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Phe" full_name="Asn-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:37:48"
                date_time_modified="2011-06-21 16:37:48"
                approved="0"
                record_id="1158">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="33.025486" avge_mass="33.0712" composition="H(3) C(5) N(-1) O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Gly" full_name="Asn-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:38:11"
                date_time_modified="2011-06-21 16:38:11"
                approved="0"
                record_id="1159">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.021464" avge_mass="-57.0513"
                     composition="H(-3) C(-2) N(-1) O(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Met" full_name="Asn-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:38:32"
                date_time_modified="2011-06-21 16:38:32"
                approved="0"
                record_id="1160">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="16.997557" avge_mass="17.0934" composition="H(3) C N(-1) O(-1) S">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Pro" full_name="Asn-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:38:54"
                date_time_modified="2011-06-21 16:38:54"
                approved="0"
                record_id="1161">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-16.990164" avge_mass="-16.9875" composition="H C N(-1) O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Gln" full_name="Asn-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:39:15"
                date_time_modified="2011-06-21 16:39:15"
                approved="0"
                record_id="1162">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.015650" avge_mass="14.0266" composition="H(2) C">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Arg" full_name="Asn-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:39:37"
                date_time_modified="2011-06-21 16:39:37"
                approved="0"
                record_id="1163">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="42.058184" avge_mass="42.0830" composition="H(6) C(2) N(2) O(-1)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Val" full_name="Asn-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:39:59"
                date_time_modified="2011-06-21 16:39:59"
                approved="0"
                record_id="1164">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.974514" avge_mass="-14.9716" composition="H(3) C N(-1) O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Asn-&gt;Trp" full_name="Asn-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:40:21"
                date_time_modified="2011-06-21 16:40:21"
                approved="0"
                record_id="1165">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="72.036386" avge_mass="72.1073" composition="H(4) C(7) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Cys" full_name="Pro-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 16:59:55"
                date_time_modified="2011-06-21 16:59:55"
                approved="0"
                record_id="1166">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="5.956421" avge_mass="6.0277" composition="H(-2) C(-2) S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Asp" full_name="Pro-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:00:24"
                date_time_modified="2011-06-21 17:00:24"
                approved="0"
                record_id="1167">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="17.974179" avge_mass="17.9722" composition="H(-2) C(-1) O(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Glu" full_name="Pro-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:26:36"
                date_time_modified="2011-06-21 17:26:36"
                approved="0"
                record_id="1168">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="31.989829" avge_mass="31.9988" composition="O(2)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Phe" full_name="Pro-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:26:56"
                date_time_modified="2011-06-21 17:26:56"
                approved="0"
                record_id="1169">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="50.015650" avge_mass="50.0587" composition="H(2) C(4)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Gly" full_name="Pro-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:27:17"
                date_time_modified="2011-06-21 17:27:17"
                approved="0"
                record_id="1170">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-40.031300" avge_mass="-40.0639" composition="H(-4) C(-3)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Lys" full_name="Pro-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:27:38"
                date_time_modified="2011-06-21 17:27:38"
                approved="0"
                record_id="1171">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="31.042199" avge_mass="31.0571" composition="H(5) C N">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Met" full_name="Pro-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:27:57"
                date_time_modified="2011-06-21 17:27:57"
                approved="0"
                record_id="1172">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="33.987721" avge_mass="34.0809" composition="H(2) S">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Asn" full_name="Pro-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:28:18"
                date_time_modified="2011-06-21 17:28:18"
                approved="0"
                record_id="1173">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="16.990164" avge_mass="16.9875" composition="H(-1) C(-1) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Val" full_name="Pro-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:28:41"
                date_time_modified="2011-06-21 17:28:41"
                approved="0"
                record_id="1174">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="2.015650" avge_mass="2.0159" composition="H(2)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Trp" full_name="Pro-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:29:04"
                date_time_modified="2011-06-21 17:29:04"
                approved="0"
                record_id="1175">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="89.026549" avge_mass="89.0947" composition="H(3) C(6) N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Pro-&gt;Tyr" full_name="Pro-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:29:24"
                date_time_modified="2011-06-21 17:29:24"
                approved="0"
                record_id="1176">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="66.010565" avge_mass="66.0581" composition="H(2) C(4) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Ala" full_name="Gln-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:39:52"
                date_time_modified="2011-06-21 17:39:52"
                approved="0"
                record_id="1177">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.021464" avge_mass="-57.0513"
                     composition="H(-3) C(-2) N(-1) O(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Cys" full_name="Gln-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:40:20"
                date_time_modified="2011-06-21 17:40:20"
                approved="0"
                record_id="1178">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-25.049393" avge_mass="-24.9863"
                     composition="H(-3) C(-2) N(-1) O(-1) S">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Asp" full_name="Gln-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:40:42"
                date_time_modified="2011-06-21 17:40:42"
                approved="0"
                record_id="1179">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-13.031634" avge_mass="-13.0418" composition="H(-3) C(-1) N(-1) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Phe" full_name="Gln-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:41:04"
                date_time_modified="2011-06-21 17:41:04"
                approved="0"
                record_id="1180">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="19.009836" avge_mass="19.0446" composition="H C(4) N(-1) O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Gly" full_name="Gln-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:41:24"
                date_time_modified="2011-06-21 17:41:24"
                approved="0"
                record_id="1181">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-71.037114" avge_mass="-71.0779"
                     composition="H(-5) C(-3) N(-1) O(-1)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Met" full_name="Gln-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:41:53"
                date_time_modified="2011-06-21 17:41:53"
                approved="0"
                record_id="1182">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="2.981907" avge_mass="3.0668" composition="H N(-1) O(-1) S">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Asn" full_name="Gln-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:42:17"
                date_time_modified="2011-06-21 17:42:17"
                approved="0"
                record_id="1183">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-14.015650" avge_mass="-14.0266" composition="H(-2) C(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Ser" full_name="Gln-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:42:37"
                date_time_modified="2011-06-21 17:42:37"
                approved="0"
                record_id="1184">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-41.026549" avge_mass="-41.0519" composition="H(-3) C(-2) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Thr" full_name="Gln-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:42:58"
                date_time_modified="2011-06-21 17:42:58"
                approved="0"
                record_id="1185">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.010899" avge_mass="-27.0253" composition="H(-1) C(-1) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Val" full_name="Gln-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:43:20"
                date_time_modified="2011-06-21 17:43:20"
                approved="0"
                record_id="1186">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-28.990164" avge_mass="-28.9982" composition="H N(-1) O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Trp" full_name="Gln-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:43:42"
                date_time_modified="2011-06-21 17:43:42"
                approved="0"
                record_id="1187">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="58.020735" avge_mass="58.0807" composition="H(2) C(6) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Gln-&gt;Tyr" full_name="Gln-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-21 17:44:02"
                date_time_modified="2011-06-21 17:44:02"
                approved="0"
                record_id="1188">
         <umod:specificity hidden="1" site="Q" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="35.004751" avge_mass="35.0440" composition="H C(4) N(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Ala" full_name="Arg-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:47:36"
                date_time_modified="2011-06-23 10:47:36"
                approved="0"
                record_id="1189">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-85.063997" avge_mass="-85.1078" composition="H(-7) C(-3) N(-3)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Asp" full_name="Arg-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:48:03"
                date_time_modified="2011-06-23 10:48:03"
                approved="0"
                record_id="1190">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-41.074168" avge_mass="-41.0983"
                     composition="H(-7) C(-2) N(-3) O(2)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Glu" full_name="Arg-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:48:51"
                date_time_modified="2011-06-23 10:48:51"
                approved="0"
                record_id="1191">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-27.058518" avge_mass="-27.0717"
                     composition="H(-5) C(-1) N(-3) O(2)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Asn" full_name="Arg-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:49:09"
                date_time_modified="2011-06-23 10:49:29"
                approved="0"
                record_id="1192">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-42.058184" avge_mass="-42.0830" composition="H(-6) C(-2) N(-2) O">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-2"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Val" full_name="Arg-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:49:53"
                date_time_modified="2011-06-23 10:49:53"
                approved="0"
                record_id="1193">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.032697" avge_mass="-57.0546" composition="H(-3) C(-1) N(-3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Tyr" full_name="Arg-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:50:15"
                date_time_modified="2011-06-23 10:50:15"
                approved="0"
                record_id="1194">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="6.962218" avge_mass="6.9876" composition="H(-3) C(3) N(-3) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-3"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Arg-&gt;Phe" full_name="Arg-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:55:03"
                date_time_modified="2011-06-23 10:55:03"
                approved="0"
                record_id="1195">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-9.032697" avge_mass="-9.0118" composition="H(-3) C(3) N(-3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="-3"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Asp" full_name="Ser-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:57:45"
                date_time_modified="2011-06-23 10:57:45"
                approved="0"
                record_id="1196">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.994915" avge_mass="28.0101" composition="C O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Glu" full_name="Ser-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:58:11"
                date_time_modified="2011-06-23 10:58:11"
                approved="0"
                record_id="1197">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="42.010565" avge_mass="42.0367" composition="H(2) C(2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;His" full_name="Ser-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:58:34"
                date_time_modified="2011-06-23 10:58:34"
                approved="0"
                record_id="1198">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="50.026883" avge_mass="50.0620" composition="H(2) C(3) N(2) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Lys" full_name="Ser-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:58:58"
                date_time_modified="2011-06-23 10:58:58"
                approved="0"
                record_id="1199">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="41.062935" avge_mass="41.0950" composition="H(7) C(3) N O(-1)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Met" full_name="Ser-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:59:19"
                date_time_modified="2011-06-23 10:59:19"
                approved="0"
                record_id="1200">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="44.008456" avge_mass="44.1188" composition="H(4) C(2) O(-1) S">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Gln" full_name="Ser-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:59:38"
                date_time_modified="2011-06-23 10:59:38"
                approved="0"
                record_id="1201">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="41.026549" avge_mass="41.0519" composition="H(3) C(2) N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Ser-&gt;Val" full_name="Ser-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 10:59:59"
                date_time_modified="2011-06-23 10:59:59"
                approved="0"
                record_id="1202">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="12.036386" avge_mass="12.0538" composition="H(4) C(2) O(-1)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Cys" full_name="Thr-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:00:56"
                date_time_modified="2011-06-23 11:00:56"
                approved="0"
                record_id="1203">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="1.961506" avge_mass="2.0390" composition="H(-2) C(-1) O(-1) S">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Asp" full_name="Thr-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:01:35"
                date_time_modified="2011-06-23 11:01:35"
                approved="0"
                record_id="1204">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="13.979265" avge_mass="13.9835" composition="H(-2) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Glu" full_name="Thr-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:02:00"
                date_time_modified="2011-06-23 11:02:00"
                approved="0"
                record_id="1205">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.994915" avge_mass="28.0101" composition="C O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Phe" full_name="Thr-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:02:21"
                date_time_modified="2011-06-23 11:02:21"
                approved="0"
                record_id="1206">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="46.020735" avge_mass="46.0700" composition="H(2) C(5) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Gly" full_name="Thr-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:02:41"
                date_time_modified="2011-06-23 11:02:41"
                approved="0"
                record_id="1207">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-44.026215" avge_mass="-44.0526" composition="H(-4) C(-2) O(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;His" full_name="Thr-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:03:03"
                date_time_modified="2011-06-23 11:03:03"
                approved="0"
                record_id="1208">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="36.011233" avge_mass="36.0354" composition="C(2) N(2) O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Gln" full_name="Thr-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:03:26"
                date_time_modified="2011-06-23 11:03:26"
                approved="0"
                record_id="1209">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="27.010899" avge_mass="27.0253" composition="H C N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Val" full_name="Thr-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:03:48"
                date_time_modified="2011-06-23 11:03:48"
                approved="0"
                record_id="1210">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-1.979265" avge_mass="-1.9728" composition="H(2) C O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Trp" full_name="Thr-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:04:08"
                date_time_modified="2011-06-23 11:04:08"
                approved="0"
                record_id="1211">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="85.031634" avge_mass="85.1060" composition="H(3) C(7) N O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Thr-&gt;Tyr" full_name="Thr-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:04:28"
                date_time_modified="2011-06-23 11:04:28"
                approved="0"
                record_id="1212">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="62.015650" avge_mass="62.0694" composition="H(2) C(5)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Cys" full_name="Val-&gt;Cys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:19:57"
                date_time_modified="2011-06-23 11:19:57"
                approved="0"
                record_id="1213">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="3.940771" avge_mass="4.0118" composition="H(-4) C(-2) S">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;His" full_name="Val-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:20:23"
                date_time_modified="2011-06-23 11:20:23"
                approved="0"
                record_id="1214">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="37.990498" avge_mass="38.0082" composition="H(-2) C N(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Lys" full_name="Val-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:20:45"
                date_time_modified="2011-06-23 11:20:45"
                approved="0"
                record_id="1215">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="29.026549" avge_mass="29.0412" composition="H(3) C N">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Asn" full_name="Val-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:21:04"
                date_time_modified="2011-06-23 11:21:04"
                approved="0"
                record_id="1216">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="14.974514" avge_mass="14.9716" composition="H(-3) C(-1) N O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Pro" full_name="Val-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:21:23"
                date_time_modified="2011-06-23 11:21:23"
                approved="0"
                record_id="1217">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-2.015650" avge_mass="-2.0159" composition="H(-2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Gln" full_name="Val-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:21:42"
                date_time_modified="2011-06-23 11:21:42"
                approved="0"
                record_id="1218">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="28.990164" avge_mass="28.9982" composition="H(-1) N O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="0"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Arg" full_name="Val-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:22:05"
                date_time_modified="2011-06-23 11:22:05"
                approved="0"
                record_id="1219">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="57.032697" avge_mass="57.0546" composition="H(3) C N(3)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Ser" full_name="Val-&gt;Ser substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:22:26"
                date_time_modified="2011-06-23 11:22:26"
                approved="0"
                record_id="1220">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-12.036386" avge_mass="-12.0538" composition="H(-4) C(-2) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Thr" full_name="Val-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:22:49"
                date_time_modified="2011-06-23 11:22:49"
                approved="0"
                record_id="1221">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="1.979265" avge_mass="1.9728" composition="H(-2) C(-1) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Trp" full_name="Val-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:23:11"
                date_time_modified="2011-06-23 11:23:11"
                approved="0"
                record_id="1222">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="87.010899" avge_mass="87.0788" composition="H C(6) N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Val-&gt;Tyr" full_name="Val-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:23:33"
                date_time_modified="2011-06-23 11:23:33"
                approved="0"
                record_id="1223">
         <umod:specificity hidden="1" site="V" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="63.994915" avge_mass="64.0422" composition="C(4) O">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Ala" full_name="Trp-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:39:07"
                date_time_modified="2011-06-23 11:39:07"
                approved="0"
                record_id="1224">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-115.042199" avge_mass="-115.1320" composition="H(-5) C(-8) N(-1)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-8"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Asp" full_name="Trp-&gt;Asp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:40:26"
                date_time_modified="2011-06-23 11:40:26"
                approved="0"
                record_id="1225">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-71.052370" avge_mass="-71.1225"
                     composition="H(-5) C(-7) N(-1) O(2)">
            <umod:element symbol="H" number="-5"/>
            <umod:element symbol="C" number="-7"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Glu" full_name="Trp-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:40:48"
                date_time_modified="2011-06-23 11:40:48"
                approved="0"
                record_id="1226">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.036720" avge_mass="-57.0959"
                     composition="H(-3) C(-6) N(-1) O(2)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Phe" full_name="Trp-&gt;Phe substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:41:09"
                date_time_modified="2011-06-23 11:41:09"
                approved="0"
                record_id="1227">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-39.010899" avge_mass="-39.0360" composition="H(-1) C(-2) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;His" full_name="Trp-&gt;His substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:41:32"
                date_time_modified="2011-06-23 11:41:32"
                approved="0"
                record_id="1228">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-49.020401" avge_mass="-49.0706" composition="H(-3) C(-5) N">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Lys" full_name="Trp-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:41:52"
                date_time_modified="2011-06-23 11:41:52"
                approved="0"
                record_id="1229">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-57.984350" avge_mass="-58.0376" composition="H(2) C(-5)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Met" full_name="Trp-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:42:11"
                date_time_modified="2011-06-23 11:42:11"
                approved="0"
                record_id="1230">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-55.038828" avge_mass="-55.0138" composition="H(-1) C(-6) N(-1) S">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Asn" full_name="Trp-&gt;Asn substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:42:32"
                date_time_modified="2011-06-23 11:42:32"
                approved="0"
                record_id="1231">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-72.036386" avge_mass="-72.1073" composition="H(-4) C(-7) O">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Pro" full_name="Trp-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:42:53"
                date_time_modified="2011-06-23 11:42:53"
                approved="0"
                record_id="1232">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-89.026549" avge_mass="-89.0947" composition="H(-3) C(-6) N(-1)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Gln" full_name="Trp-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:43:14"
                date_time_modified="2011-06-23 11:43:14"
                approved="0"
                record_id="1233">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-58.020735" avge_mass="-58.0807" composition="H(-2) C(-6) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Thr" full_name="Trp-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:43:34"
                date_time_modified="2011-06-23 11:43:34"
                approved="0"
                record_id="1234">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-85.031634" avge_mass="-85.1060" composition="H(-3) C(-7) N(-1) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="C" number="-7"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Val" full_name="Trp-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:43:54"
                date_time_modified="2011-06-23 11:43:54"
                approved="0"
                record_id="1235">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-87.010899" avge_mass="-87.0788" composition="H(-1) C(-6) N(-1)">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Trp-&gt;Tyr" full_name="Trp-&gt;Tyr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:44:18"
                date_time_modified="2011-06-23 11:44:18"
                approved="0"
                record_id="1236">
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-23.015984" avge_mass="-23.0366" composition="H(-1) C(-2) N(-1) O">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-2"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Ala" full_name="Tyr-&gt;Ala substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:46:23"
                date_time_modified="2011-06-23 11:46:23"
                approved="0"
                record_id="1237">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-92.026215" avge_mass="-92.0954" composition="H(-4) C(-6) O(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Glu" full_name="Tyr-&gt;Glu substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:46:45"
                date_time_modified="2011-06-23 11:46:45"
                approved="0"
                record_id="1238">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-34.020735" avge_mass="-34.0593" composition="H(-2) C(-4) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Gly" full_name="Tyr-&gt;Gly substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:47:05"
                date_time_modified="2011-06-23 11:47:05"
                approved="0"
                record_id="1239">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-106.041865" avge_mass="-106.1219" composition="H(-6) C(-7) O(-1)">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="C" number="-7"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Lys" full_name="Tyr-&gt;Lys substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:47:23"
                date_time_modified="2011-06-23 11:47:23"
                approved="0"
                record_id="1240">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-34.968366" avge_mass="-35.0010" composition="H(3) C(-3) N O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Met" full_name="Tyr-&gt;Met substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:47:43"
                date_time_modified="2011-06-23 11:47:43"
                approved="0"
                record_id="1241">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-32.022844" avge_mass="-31.9772" composition="C(-4) O(-1) S">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Pro" full_name="Tyr-&gt;Pro substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:48:07"
                date_time_modified="2011-06-23 11:48:07"
                approved="0"
                record_id="1242">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-66.010565" avge_mass="-66.0581" composition="H(-2) C(-4) O(-1)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Gln" full_name="Tyr-&gt;Gln substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:48:28"
                date_time_modified="2011-06-23 11:48:28"
                approved="0"
                record_id="1243">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-35.004751" avge_mass="-35.0440" composition="H(-1) C(-4) N">
            <umod:element symbol="H" number="-1"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Arg" full_name="Tyr-&gt;Arg substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:48:49"
                date_time_modified="2011-06-23 11:48:49"
                approved="0"
                record_id="1244">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-6.962218" avge_mass="-6.9876" composition="H(3) C(-3) N(3) O(-1)">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Thr" full_name="Tyr-&gt;Thr substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:49:10"
                date_time_modified="2011-06-23 11:49:10"
                approved="0"
                record_id="1245">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-62.015650" avge_mass="-62.0694" composition="H(-2) C(-5)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-5"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="0"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Val" full_name="Tyr-&gt;Val substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:49:30"
                date_time_modified="2011-06-23 11:49:30"
                approved="0"
                record_id="1246">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-63.994915" avge_mass="-64.0422" composition="C(-4) O(-1)">
            <umod:element symbol="H" number="0"/>
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="N" number="0"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Trp" full_name="Tyr-&gt;Trp substitution" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:49:50"
                date_time_modified="2011-06-23 11:49:50"
                approved="0"
                record_id="1247">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="23.015984" avge_mass="23.0366" composition="H C(2) N O(-1)">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="-1"/>
            <umod:element symbol="S" number="0"/>
         </umod:delta>
         <umod:alt_name>Misacylation of the tRNA or editing of the charged tRNA</umod:alt_name>
      </umod:mod>
      <umod:mod title="Tyr-&gt;Xle" full_name="Tyr-&gt;Leu/Ile substitution"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-06-23 11:53:26"
                date_time_modified="2011-06-23 11:53:26"
                approved="0"
                record_id="1248">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="AA substitution"
                           spec_group="1"/>
         <umod:delta mono_mass="-49.979265" avge_mass="-50.0156" composition="H(2) C(-3) O(-1)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="AHA-SS" full_name="Azidohomoalanine coupled to reductively cleaved tag"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-06-24 10:58:26"
                date_time_modified="2011-06-27 17:38:32"
                approved="0"
                record_id="1249">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="195.075625" avge_mass="195.1787" composition="H(9) C(7) N(5) O(2)">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J Am Chem Soc. 2010 Dec 29;132(51):18351-60. Epub 2010 Dec 8.

Cleavable biotin probes for labeling of biomolecules via azide-alkyne cycloaddition.

Szychowski J, Mahdavi A, Hodas JJ, Bagert JD, Ngo JT, Landgraf P, Dieterich DC, Schuman EM, Tirrell DA.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="AHA-SS_CAM"
                full_name="carbamidomethylated form of reductively cleaved tag coupled to azidohomoalanine"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-06-24 11:00:11"
                date_time_modified="2011-06-27 17:39:41"
                approved="0"
                record_id="1250">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Multiple"
                           spec_group="1"/>
         <umod:delta mono_mass="252.097088" avge_mass="252.2300" composition="H(12) C(9) N(6) O(3)">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J Am Chem Soc. 2010 Dec 29;132(51):18351-60. Epub 2010 Dec 8.rnCleavable biotin probes for labeling of biomolecules via azide-alkyne cycloaddition.rnSzychowski J, Mahdavi A, Hodas JJ, Bagert JD, Ngo JT, Landgraf P, Dieterich DC, Schuman EM, Tirrell DA.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-33033"
                full_name="Sulfo-SBED Label Photoreactive Biotin Crosslinker"
                username_of_poster="Magnojunqueira"
                group_of_poster=""
                date_time_posted="2011-06-24 16:58:05"
                date_time_modified="2013-04-16 23:21:26"
                approved="0"
                record_id="1251">
         <umod:specificity hidden="1" site="N-term" position="Anywhere"
                           classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Sulfo-SBED Label Transfer ReagentrnReaction path that does not remove one Hidrogen atom from the target peptide</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="548.223945" avge_mass="548.7211"
                     composition="H(36) C(25) N(6) O(4) S(2)">
            <umod:element symbol="H" number="36"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Sulfo-SBED Biotin Label Transfer Reagent and Kit</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=23A2097D-0154-4B13-9D95-3F08AAD8B2C9</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-33033-H"
                full_name="Sulfo-SBED Label Photoreactive Biotin Crosslinker minus Hydrogen"
                username_of_poster="Magnojunqueira"
                group_of_poster=""
                date_time_posted="2011-06-24 17:01:13"
                date_time_modified="2011-06-24 21:16:06"
                approved="0"
                record_id="1252">
         <umod:specificity hidden="1" site="N-term" position="Anywhere"
                           classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>Sulfo-SBED Label Transfer Reagent. Reaction path that removes one Hydrogen atom from the target peptide</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="546.208295" avge_mass="546.7053"
                     composition="H(34) C(25) N(6) O(4) S(2)">
            <umod:element symbol="H" number="34"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Sulfo-SBED Biotin Label Transfer Reagent and Kit</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=23A2097D-0154-4B13-9D95-3F08AAD8B2C9</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="2-monomethylsuccinyl" full_name="S-(2-monomethylsuccinyl) cysteine"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-06-28 15:27:43"
                date_time_modified="2011-07-12 14:25:44"
                approved="0"
                record_id="1253">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="130.026609" avge_mass="130.0987" composition="H(6) C(5) O(4)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Chemical datasheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.chemblink.com/products/2756-87-8.htm</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Fumaric acid esters exert neuroprotective effects in neuroinflammation via activation of the Nrf2 antioxidant pathway</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://brain.oxfordjournals.org/content/134/3/678.short?rss=1</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>methyl hydrogen fumarate - Compound Summary (CID 5369209)</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=5369209</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Saligenin" full_name="o-toluene" username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2011-06-30 19:24:11"
                date_time_modified="2011-07-09 09:17:45"
                approved="0"
                record_id="1254">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="106.041865" avge_mass="106.1219" composition="H(6) C(7) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:misc_notes>Believed to be created in a secondary reaction after initial formation of an adduct between the organophosphate 2-(o-cresyl)-4H-1,3,2-benzodioxaphosphorane-2-one and Tyr or Ser in proteins.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Cresylphosphate" full_name="o-toluyl-phosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2011-06-30 19:33:14"
                date_time_modified="2011-07-09 09:20:04"
                approved="0"
                record_id="1255">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="170.013281" avge_mass="170.1024" composition="H(7) C(7) O(3) P">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Schopfer, Furlong and Lockridge; Development of diagnostics in the search for an explanation of aerotoxic syndrome; Anal Biochem 404, 64-74 (2010)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by hydrolysis of the product of the reaction of 2-(o-cresyl)-4H-1,3,2-benzodioxaphosphorane-2-one with amino acids residues in proteins.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="CresylSaligeninPhosphate" full_name="Cresyl-Saligenin-phosphorylation"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2011-06-30 19:38:15"
                date_time_modified="2011-07-09 09:21:34"
                approved="0"
                record_id="1256">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="276.055146" avge_mass="276.2244" composition="H(13) C(14) O(4) P">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Schopfer, Furlong and Lockridge; Development of diagnostics in the search for an explanation of aerotoxic syndrome; Anal Biochem 404, 64-74 (2010)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Created by reaction of 2-(o-cresyl)-4H-1,3,2-benzodioxaphosphorane-2-one with amino acid residues in proteins.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ub-Br2" full_name="Ub Bromide probe addition"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-07-01 13:25:05"
                date_time_modified="2011-07-11 11:30:04"
                approved="0"
                record_id="1257">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="100.063663" avge_mass="100.1191" composition="H(8) C(4) N(2) O">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Active site DUB cystine modification with Br Ub probe</umod:alt_name>
         <umod:alt_name>Trypsin Digestion reminant of Ub Br probe</umod:alt_name>
         <umod:xref>
            <umod:text>Chemistry and Biology

Volume 9, Issue 10, 1 October 2002, Pages 1149-1159   

Chemistry-based functional proteomics reveals novel members of the deubiquitinating enzyme family</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.cell.com/chemistry-biology/abstract/S1074-5521%2802%2900248-X</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>LifeSensors data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.enzolifesciences.com/fileadmin/reports/els_0a605e18ec.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ub-VME" full_name="Ubiquitin vinylmethylester"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-07-01 13:27:56"
                date_time_modified="2011-07-11 11:26:42"
                approved="0"
                record_id="1258">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="173.092617" avge_mass="173.1897" composition="H(13) C(7) N(2) O(3)">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>Active site DUB cystine modification with VME Ub probe</umod:alt_name>
         <umod:alt_name>Trypsin Digestion reminant of Ub VMEr probe</umod:alt_name>
         <umod:xref>
            <umod:text>LifeSensors data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.lifesensors.com/pdf/Ub-VME_datasheet.pdf</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Chemistry and Biology

Volume 9, Issue 10, 1 October 2002, Pages 1149-1159   

Chemistry-based functional proteomics reveals novel members of the deubiquitinating enzyme family</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.cell.com/chemistry-biology/abstract/S1074-5521%2802%2900248-X</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Ub-amide" full_name="Ub amide probe addition"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-07-01 13:47:40"
                date_time_modified="2011-07-12 14:28:09"
                approved="0"
                record_id="1260">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="196.108602" avge_mass="196.2264" composition="H(14) C(9) N(3) O(2)">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Active site DUB cystine modification with Ub amide probe</umod:alt_name>
         <umod:alt_name>Trypsin Digestion reminant of Ub amide probe</umod:alt_name>
         <umod:misc_notes>Unpublished chemically synthesized protein modification tool.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Ub-fluorescein" full_name="Ub Fluorescein probe addition"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-07-01 13:49:56"
                date_time_modified="2011-07-12 14:28:20"
                approved="0"
                record_id="1261">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="597.209772" avge_mass="597.5980" composition="H(29) C(31) N(6) O(7)">
            <umod:element symbol="H" number="29"/>
            <umod:element symbol="C" number="31"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:alt_name>Active site DUB cystine modification with Fluorescein Ub probe</umod:alt_name>
         <umod:alt_name>Trypsin Digestion reminant of Ub Fluorescein probe</umod:alt_name>
         <umod:misc_notes>Unpublished chemically synthesized protein modification tool.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="2-dimethylsuccinyl" full_name="S-(2-dimethylsuccinyl) cysteine"
                username_of_poster="JMcGouran"
                group_of_poster=""
                date_time_posted="2011-07-06 10:55:02"
                date_time_modified="2011-07-12 14:25:02"
                approved="0"
                record_id="1262">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="144.042259" avge_mass="144.1253" composition="H(8) C(6) O(4)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Dimethyl fumarate - Compound Summary</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=637568&amp;loc=ec_rcs</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Gly" full_name="Addition of Glycine" username_of_poster="kstampe2"
                group_of_poster=""
                date_time_posted="2011-07-07 16:37:10"
                date_time_modified="2011-07-09 09:33:11"
                approved="0"
                record_id="1263">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Other" spec_group="3"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Other" spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="57.021464" avge_mass="57.0513" composition="H(3) C(2) N O">
            <umod:element symbol="H" number="3"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="pupylation" full_name="addition of GGE" username_of_poster="hbromage"
                group_of_poster=""
                date_time_posted="2011-07-13 21:34:29"
                date_time_modified="2011-07-24 12:24:34"
                approved="0"
                record_id="1264">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="243.085521" avge_mass="243.2166" composition="H(13) C(9) N(3) O(5)">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="5"/>
         </umod:delta>
         <umod:xref>
            <umod:text>21738222</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/21738222</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(4)" full_name="13C4 Methionine label"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-07-27 09:55:40"
                date_time_modified="2011-12-07 10:49:13"
                approved="0"
                record_id="1266">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="4.013419" avge_mass="3.9706" composition="C(-4) 13C(4)">
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="4"/>
         </umod:delta>
         <umod:alt_name>SILAC</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HCysteinyl" full_name="S-homocysteinylation"
                username_of_poster="alejandro"
                group_of_poster=""
                date_time_posted="2011-09-15 19:36:44"
                date_time_modified="2011-09-23 16:33:31"
                approved="0"
                record_id="1271">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:misc_notes>Homocysteine can take part in disulfide exchange reactions with S-S bonds in proteins, thus forming S-homocysteinylated proteins</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="133.019749" avge_mass="133.1689" composition="H(7) C(4) N O(2) S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Perla-Kajan J., Twardowski T., Jakubowski H. Amino Acids. 2007. V. 32. № 4. P. 561–572.

Jakubowski H. J. Nutr. 2006. V. 136. 6S Suppl. P. 1741S–1749S.

Jakubowski H. J. Biol. Chem. 2002. V. 277.№ 34. P. 30425–30428.

Jakubowski H., Zhang L., Bardeguez A., Aviv A. Circ. Res. 2000. V. 87. № 1. P. 45–51.

Glushchenko A. V., Jacobsen D. W. Antioxid. Redox Signal. 2007. V. 9. P. 1883–1898.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(4)+Oxidation" full_name="Oxidised 13C4 labelled Methionine"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-07-27 10:10:30"
                date_time_modified="2011-08-05 14:17:17"
                approved="0"
                record_id="1267">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="20.008334" avge_mass="19.9700" composition="C(-4) 13C(4) O">
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>SILAC</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="UgiJoullie" full_name="Side reaction of HisTag"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-09-26 12:42:53"
                date_time_modified="2011-09-30 12:38:05"
                approved="0"
                record_id="1276">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="1106.489350" avge_mass="1107.1274"
                     composition="H(60) C(47) N(23) O(10)">
            <umod:element symbol="H" number="60"/>
            <umod:element symbol="C" number="47"/>
            <umod:element symbol="N" number="23"/>
            <umod:element symbol="O" number="10"/>
         </umod:delta>
         <umod:misc_notes>Side product of the three component Ugi-Joullie reaction. Pirrolidine is reacted with a isocianide modificated peptide (CNGGHHHHHH) to get a Pro-Gly-GGHHHHHH. The main product is the C-terminal modified protein. Unlikely Asp and Glu can react.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="HCysThiolactone" full_name="N-Homocysteine thiolactone"
                username_of_poster="alejandro"
                group_of_poster=""
                date_time_posted="2011-09-15 19:31:10"
                date_time_modified="2011-09-23 16:33:45"
                approved="0"
                record_id="1270">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1">
            <umod:misc_notes>N-Homocysteine thiolactone is an acylating agent and can react with the E amino group of lysine residues</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="117.024835" avge_mass="117.1695" composition="H(7) C(4) N O S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Perla-Kajan J., Twardowski T., Jakubowski H. Amino Acids. 2007. V. 32. № 4. P. 561–572.

Jakubowski H. J. Nutr. 2006. V. 136. 6S Suppl. P. 1741S–1749S.

Jakubowski H. Cell. Mol. Life Sci. 2004. V. 61. № 4. P. 470–487.

Jakubowski H. J. Biol. Chem. 2002. V. 277.№ 34. P. 30425–30428.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="UgiJoullieProGly"
                full_name="Side reaction of PG with Side chain of aspartic or glutamic acid"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-10-14 18:11:28"
                date_time_modified="2011-10-21 16:41:11"
                approved="0"
                record_id="1282">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="154.074228" avge_mass="154.1665" composition="H(10) C(7) N(2) O(2)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:misc_notes>Side product of the three component Ugi-Joullie reaction. Pirrolidine is reacted with a isocianide modificated glycine to get  Protein-Pro-Gly. The main product is the C-terminal modified protein. Unlikely Asp and Glu can react.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dipyridyl" full_name="Cys modified with dipy ligand"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-09-27 18:33:34"
                date_time_modified="2012-01-20 14:46:34"
                approved="0"
                record_id="1277">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="225.090212" avge_mass="225.2459" composition="H(11) C(13) N(3) O">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:misc_notes>Cysteine residue reacts with a chlorinated dipyridyl ligand to get a monoalkylated Cys-L1. The only product is this single cys mutant modified on that position.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Furan"
                full_name="Chemical modification of the iodinated sites of thyroglobulin by Suzuki reaction"
                username_of_poster="chem0303"
                group_of_poster=""
                date_time_posted="2011-09-28 13:31:35"
                date_time_modified="2011-09-30 12:39:48"
                approved="0"
                record_id="1278">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="66.010565" avge_mass="66.0581" composition="H(2) C(4) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Difuran"
                full_name="Chemical modification of the diiodinated sites of thyroglobulin by Suzuki reaction"
                username_of_poster="chem0303"
                group_of_poster=""
                date_time_posted="2011-09-28 13:34:45"
                date_time_modified="2011-09-30 12:40:21"
                approved="0"
                record_id="1279">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="132.021129" avge_mass="132.1162" composition="H(4) C(8) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="BMP-piperidinol"
                full_name="1-methyl-3-benzoyl-4-hydroxy-4-phenylpiperidine"
                username_of_poster="Areej"
                group_of_poster=""
                date_time_posted="2011-10-12 12:22:26"
                date_time_modified="2012-01-13 15:44:30"
                approved="0"
                record_id="1281">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="263.131014" avge_mass="263.3337" composition="H(17) C(18) N O">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>(4-hydroxy-1-methyl-4-phenylpiperidin-3-yl)(phenyl)methanone</umod:alt_name>
         <umod:alt_name>3-benzoyl-1-methyl-4-phenyl-4-piperidinol</umod:alt_name>
         <umod:xref>
            <umod:text>Effects of Mannich bases on cellular glutathione and related enzymes of Jurkat cells in culture conditions</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/11869872</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="UgiJoullieProGlyProGly"
                full_name="Side reaction of PGPG with Side chain of aspartic or glutamic acid"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-10-14 18:14:19"
                date_time_modified="2011-10-21 16:40:54"
                approved="0"
                record_id="1283">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:delta mono_mass="308.148455" avge_mass="308.3330" composition="H(20) C(14) N(4) O(4)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="14"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:misc_notes>Side product of the three component Ugi-Joullie reaction. Pirrolidine is reacted with a isocianide modificated glycine to get  Protein-Pro-Gly-Pro-Gly. The main product is the C-terminal modified protein. Unlikely Asp and Glu can react.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Arg-loss" full_name="Loss of arginine due to transpeptidation"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 10:12:18"
                date_time_modified="2011-11-24 16:39:25"
                approved="0"
                record_id="1287">
         <umod:specificity hidden="1" site="R" position="Any C-term" classification="Other" spec_group="1"/>
         <umod:delta mono_mass="-156.101111" avge_mass="-156.1857"
                     composition="H(-12) C(-6) N(-4) O(-1)">
            <umod:element symbol="H" number="-12"/>
            <umod:element symbol="C" number="-6"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Arg" full_name="Addition of arginine due to transpeptidation"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 10:15:00"
                date_time_modified="2011-11-21 10:17:19"
                approved="0"
                record_id="1288">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Other"
                           spec_group="1"/>
         <umod:delta mono_mass="156.101111" avge_mass="156.1857" composition="H(12) C(6) N(4) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="IMEHex(2)NeuAc(1)"
                full_name="Glycosylation with IME linked Hex(2) NeuAc"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2011-11-11 12:06:36"
                date_time_modified="2014-07-09 17:00:31"
                approved="0"
                record_id="1286">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="688.199683" avge_mass="688.6527"
                     composition="H(3) C(2) N S Hex(2) NeuAc">
            <umod:element symbol="H" number="40"/>
            <umod:element symbol="C" number="25"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="18"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>(2-Imino-2-methoxyethyl 1-thioglycoside)</umod:alt_name>
         <umod:xref>
            <umod:text>Biochemistry, 1976, 15 (18), 3956</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Modification by Hex(2) NeuAc  using IME coupling to get glycosylated proteins</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Butyryl" full_name="Butyryl" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 12:06:20"
                date_time_modified="2011-11-21 12:06:20"
                approved="0"
                record_id="1289">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="70.041865" avge_mass="70.0898" composition="H(6) C(4) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>J. Proteome Res., 2009, 8 (2), pp 900–906</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/pr8005155</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dicarbamidomethyl" full_name="Double Carbamidomethylation"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 13:21:06"
                date_time_modified="2013-05-16 10:59:12"
                approved="0"
                record_id="1290">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Artefact"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="5"/>
         <umod:delta mono_mass="114.042927" avge_mass="114.1026" composition="H(6) C(4) N(2) O(2)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>18511913</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Mentioned by Marshall Bern</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Dimethyl:2H(6)" full_name="Dimethyl-Medium" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 13:27:00"
                date_time_modified="2013-02-22 12:32:45"
                approved="0"
                record_id="1291">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="3"/>
         <umod:delta mono_mass="34.068961" avge_mass="34.0901" composition="H(-2) 2H(6) C(2)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Triplex protein quantification based on stable isotope labeling by peptide dimethylation applied to cell and tissue lysates. Boersema PJ, Aye TT, van Veen TA, Heck AJ, Mohammed S. Proteomics. 2008 Nov;8(22):4624-32</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>15782174</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="GGQ" full_name="SUMOylation leaving GlyGlyGln"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 13:37:45"
                date_time_modified="2011-11-21 13:53:21"
                approved="0"
                record_id="1292">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>This peptide is generated from a trypsin/chymotrypsin dual digest.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="242.101505" avge_mass="242.2319" composition="H(14) C(9) N(4) O(4)">
            <umod:element symbol="H" number="14"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="QTGG" full_name="SUMOylation leaving GlnThrGlyGly"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 13:41:32"
                date_time_modified="2011-11-25 13:05:55"
                approved="0"
                record_id="1293">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Other" spec_group="1">
            <umod:misc_notes>This peptide is generated from a trypsin/chymotrypsin dual digest.</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="343.149184" avge_mass="343.3357" composition="H(21) C(13) N(5) O(6)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:13C(3)15N(1)" full_name="13C3 15N1 label for SILAC"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:37:53"
                date_time_modified="2011-11-21 14:37:53"
                approved="0"
                record_id="1297">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="4.007099" avge_mass="3.9714" composition="C(-3) 13C(3) N(-1) 15N">
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(3)" full_name="13C3 label for SILAC"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:36:18"
                date_time_modified="2011-11-21 14:37:03"
                approved="0"
                record_id="1296">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="3.010064" avge_mass="2.9780" composition="C(-3) 13C(3)">
            <umod:element symbol="C" number="-3"/>
            <umod:element symbol="13C" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:13C(4)15N(1)" full_name="13C4 15N1 label for SILAC"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:40:56"
                date_time_modified="2011-11-21 14:40:56"
                approved="0"
                record_id="1298">
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="5.010454" avge_mass="4.9640" composition="C(-4) 13C(4) N(-1) 15N">
            <umod:element symbol="C" number="-4"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(10)" full_name="2H(10) label" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:51:01"
                date_time_modified="2011-11-21 14:51:01"
                approved="0"
                record_id="1299">
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="10.062767" avge_mass="10.0616" composition="H(-10) 2H(10)">
            <umod:element symbol="H" number="-10"/>
            <umod:element symbol="2H" number="10"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(4)13C(1)" full_name="Label:2H(4)13C(1)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:52:54"
                date_time_modified="2011-11-21 14:52:54"
                approved="0"
                record_id="1300">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="5.028462" avge_mass="5.0173" composition="H(-4) 2H(4) C(-1) 13C">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="13C" number="1"/>
         </umod:delta>
         <umod:misc_notes>For SILAC experiments</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Lys" full_name="Addition of lysine due to transpeptidation"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-21 14:56:07"
                date_time_modified="2011-11-21 14:56:07"
                approved="1"
                record_id="1301">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Other"
                           spec_group="1"/>
         <umod:delta mono_mass="128.094963" avge_mass="128.1723" composition="H(12) C(6) N(2) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="mTRAQ:13C(6)15N(2)" full_name="mTRAQ heavy" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-25 10:35:32"
                date_time_modified="2011-11-25 10:35:32"
                approved="0"
                record_id="1302">
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Isotopic label"
                           spec_group="5">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Isotopic label"
                           spec_group="6">
            <umod:misc_notes>Very low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="148.109162" avge_mass="148.1257"
                     composition="H(12) C 13C(6) 15N(2) O">
            <umod:element symbol="H" number="12"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Applied Biosystems mTRAQ(TM) reagent</umod:alt_name>
         <umod:xref>
            <umod:text>Applied Biosystems mTRAQ(TM) Reagents</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www3.appliedbiosystems.com/cms/groups/psm_support/documents/generaldocuments/cms_054141.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NeuAc" full_name="N-acetyl neuraminic acid" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-25 10:40:54"
                date_time_modified="2011-11-25 10:40:54"
                approved="0"
                record_id="1303">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:delta mono_mass="291.095417" avge_mass="291.2546" composition="NeuAc">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="8"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="NeuGc" full_name="N-glycoyl neuraminic acid" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-25 10:41:35"
                date_time_modified="2011-11-25 10:41:35"
                approved="0"
                record_id="1304">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="3"/>
         <umod:delta mono_mass="307.090331" avge_mass="307.2540" composition="NeuGc">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="9"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Propyl" full_name="Propyl" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-25 11:06:09"
                date_time_modified="2011-11-25 11:06:09"
                approved="0"
                record_id="1305">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="42.046950" avge_mass="42.0797" composition="H(6) C(3)">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Propyl:2H(6)" full_name="Propyl:2H(6)" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2011-11-25 11:06:56"
                date_time_modified="2011-11-25 11:06:56"
                approved="0"
                record_id="1306">
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="48.084611" avge_mass="48.1167" composition="2H(6) C(3)">
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Propiophenone" full_name="Propiophenone" username_of_poster="Areej"
                group_of_poster=""
                date_time_posted="2011-12-07 23:43:34"
                date_time_modified="2011-12-09 13:50:44"
                approved="0"
                record_id="1310">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="7"/>
         <umod:specificity hidden="1" site="W" position="Anywhere" classification="Chemical derivative"
                           spec_group="6"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="132.057515" avge_mass="132.1592" composition="H(8) C(9) O">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Effects of Mannich bases on cellular glutathione and related enzymes of Jurkat cells in culture conditions</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/11869872</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PS_Hapten" full_name="reaction with phenyl salicylate (PS)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2012-08-01 14:45:32"
                date_time_modified="2012-08-03 09:20:17"
                approved="0"
                record_id="1345">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="120.021129" avge_mass="120.1055" composition="H(4) C(7) O(2)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Investigating protein haptenation mechanisms of skin sensitisers using human serum albumin as a model protein. Aleksic et al, Toxicol in Vitro 21 (2007) 723-733</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/17317089</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Cy3-maleimide" full_name="Cy3 Maleimide mono-Reactive dye"
                username_of_poster="hbromage"
                group_of_poster=""
                date_time_posted="2012-08-27 21:50:06"
                date_time_modified="2012-09-14 23:52:21"
                approved="0"
                record_id="1348">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="753.262796" avge_mass="753.9046"
                     composition="H(45) C(37) N(4) O(9) S(2)">
            <umod:element symbol="H" number="45"/>
            <umod:element symbol="C" number="37"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:alt_name>Cy3 mono-functional maleimides are used for the selective labeling of molecules containing free sulfhydryl groups, such as cysteine residues in proteins and peptides and oligonucleotides.</umod:alt_name>
         <umod:xref>
            <umod:text>company website</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.gelifesciences.com/webapp/wcs/stores/servlet/productById/en/GELifeSciences-us/25800673</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Product Specification Sheet</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>https://www.gelifesciences.com/gehcls_images/GELS/Related%20Content/Files/1314787424814/litdocPA23031PS%20Rev%20D%202007_20110831133515.pdf</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(6)C(3)O(1)" full_name="Reduced acrolein addition +58"
                username_of_poster="yiyingzhu"
                group_of_poster=""
                date_time_posted="2011-12-15 19:38:31"
                date_time_modified="2011-12-16 15:11:34"
                approved="0"
                record_id="1312">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="58.041865" avge_mass="58.0791" composition="H(6) C(3) O">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>21778411</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Delta:H(8)C(6)O(1)" full_name="Reduced acrolein addition +96"
                username_of_poster="yiyingzhu"
                group_of_poster=""
                date_time_posted="2011-12-15 19:48:15"
                date_time_modified="2011-12-16 15:18:16"
                approved="0"
                record_id="1313">
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="L" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="96.057515" avge_mass="96.1271" composition="H(8) C(6) O">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>9632657</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>21778411</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="biotinAcrolein298"
                full_name="biotin hydrazide labeled acrolein addition +298"
                username_of_poster="yiyingzhu"
                group_of_poster=""
                date_time_posted="2011-12-15 19:54:52"
                date_time_modified="2011-12-16 15:19:54"
                approved="0"
                record_id="1314">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="298.146347" avge_mass="298.4044"
                     composition="H(22) C(13) N(4) O(2) S">
            <umod:element symbol="H" number="22"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>21704744</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="MM-diphenylpentanone"
                full_name="3-methyl-5-(methylamino)-1,3-diphenylpentan-1-one"
                username_of_poster="Areej"
                group_of_poster=""
                date_time_posted="2011-12-21 21:29:00"
                date_time_modified="2011-12-21 21:29:00"
                approved="0"
                record_id="1315">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="265.146664" avge_mass="265.3496" composition="H(19) C(18) N O">
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Effects of Mannich bases on cellular glutathione and related enzymes of Jurkat cells in culture conditions</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/11869872</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="EHD-diphenylpentanone"
                full_name="2-ethyl-3-hydroxy-1,3-diphenylpentan-1-one"
                username_of_poster="Areej"
                group_of_poster=""
                date_time_posted="2012-01-08 15:22:49"
                date_time_modified="2012-01-13 15:41:26"
                approved="0"
                record_id="1317">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="266.130680" avge_mass="266.3343" composition="H(18) C(18) O(2)">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>3-benzoyl-1-methyl-4-phenyl-4-piperidinol demethyl damino</umod:alt_name>
         <umod:xref>
            <umod:text>Effects of Mannich bases on cellular glutathione and related enzymes of Jurkat cells in culture conditions</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/11869872</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="benzylguanidine"
                full_name="modification of the lysine side chain from NH2 to guanidine with a H removed in favor of a benzyl group"
                username_of_poster="pepinr"
                group_of_poster=""
                date_time_posted="2012-09-06 17:14:04"
                date_time_modified="2012-09-07 15:15:29"
                approved="0"
                record_id="1349">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="132.068748" avge_mass="132.1625" composition="H(8) C(8) N(2)">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:alt_name>adds 132 Da to K side chain</umod:alt_name>
      </umod:mod>
      <umod:mod title="CarboxymethylDMAP"
                full_name="A fixed +1 charge tag attached to the N-terminus of peptides"
                username_of_poster="pepinr"
                group_of_poster=""
                date_time_posted="2012-09-06 17:32:42"
                date_time_modified="2012-09-07 15:19:24"
                approved="0"
                record_id="1350">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="162.079313" avge_mass="162.1885" composition="H(10) C(9) N(2) O">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>Added mass is reduced by 1 H to reflect that first charge state requires no proton addition</umod:alt_name>
         <umod:alt_name>Replaces one of the N-terminal H atoms with C9H12N2O</umod:alt_name>
         <umod:xref>
            <umod:text>J. of American Society for Mass Spectrometry,

M. Zimnicka, et al.  "Tunable Charge Tags for Electron-Based Methods of Peptide Sequencing: Design and Applications" June 2011 pgs 608 -620</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21901+2H2O" full_name="Maleimide-Biotin + 2Water"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2012-01-23 14:20:11"
                date_time_modified="2012-01-27 12:51:55"
                approved="0"
                record_id="1320">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="561.246849" avge_mass="561.6489"
                     composition="H(39) C(23) N(5) O(9) S">
            <umod:element symbol="H" number="39"/>
            <umod:element symbol="C" number="23"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Maleimide-PEG2-Biotin + 2Water</umod:alt_name>
         <umod:xref>
            <umod:text>Lab observation analagous to hydrolysis of N-Ethylmaleimide</umod:text>
            <umod:source>Other</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=01031005</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DiLeu4plex115" full_name="Accurate mass for DiLeu 115 isobaric tag"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2012-02-15 12:05:08"
                date_time_modified="2012-02-15 12:05:08"
                approved="0"
                record_id="1321">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="145.120000" avge_mass="145.1966"
                     composition="H(15) C(7) 13C 15N 18O">
            <umod:element symbol="H" number="15"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Anal. Chem., 2010, 82 (7), pp 2817–2825</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ac902778d</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiLeu4plex" full_name="Accurate mass for DiLeu 116 isobaric tag"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2012-02-15 12:05:48"
                date_time_modified="2012-02-15 12:08:24"
                approved="0"
                record_id="1322">
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="145.132163" avge_mass="145.2229"
                     composition="H(13) 2H(2) C(8) N 18O">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="18O" number="1"/>
         </umod:delta>
         <umod:alt_name>Representative, nominal mass for all four tags</umod:alt_name>
         <umod:xref>
            <umod:text>Anal. Chem., 2010, 82 (7), pp 2817–2825</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ac902778d</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiLeu4plex117" full_name="Accurate mass for DiLeu 117 isobaric tag"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2012-02-15 12:06:10"
                date_time_modified="2012-02-15 12:06:10"
                approved="0"
                record_id="1323">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="145.128307" avge_mass="145.2092"
                     composition="H(13) 2H(2) C(7) 13C 15N O">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Anal. Chem., 2010, 82 (7), pp 2817–2825</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ac902778d</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiLeu4plex118" full_name="Accurate mass for DiLeu 118 isobaric tag"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2012-02-15 12:06:30"
                date_time_modified="2012-02-15 12:06:30"
                approved="0"
                record_id="1324">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="3">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="145.140471" avge_mass="145.2354" composition="H(11) 2H(4) C(8) N O">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="2H" number="4"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Anal. Chem., 2010, 82 (7), pp 2817–2825</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1021/ac902778d</umod:url>
         </umod:xref>
         <umod:misc_notes>Different channels have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="bisANS-sulfonates" full_name="BisANS with loss of both sulfonates"
                username_of_poster="app95d"
                group_of_poster=""
                date_time_posted="2012-05-22 21:55:58"
                date_time_modified="2012-05-29 12:07:22"
                approved="0"
                record_id="1330">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="437.201774" avge_mass="437.5543" composition="H(25) C(32) N(2)">
            <umod:element symbol="H" number="25"/>
            <umod:element symbol="C" number="32"/>
            <umod:element symbol="N" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Improved detection of intact tyrosine sulfate-containing peptides by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry in linear negative ion mode.</umod:text>
            <umod:source>Entrez</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/19857600</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DNCB_hapten"
                full_name="Chemical reaction with 2,4-dinitro-1-chloro benzene (DNCB)"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2012-05-24 13:55:30"
                date_time_modified="2012-08-03 09:19:45"
                approved="0"
                record_id="1331">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="166.001457" avge_mass="166.0911" composition="H(2) C(6) N(2) O(4)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Investigating protein haptenation mechanisms of skin sensitisers using human serum albumin as a model protein, Aleksic et al, Toxicology in vitro, 21 (2007) 723-733</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Mass spectrometric identification of covalent adducts of skin allergen 2,4-dinitro-1-chlorobenzene, Aleksic et al, Toxicology in Vitro, 22 (2008) 1169-1176</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Chemical reaction with 2,4-dinitro-1-chloro benzene (DNCB) by nucleophilic  attack on electrophilic amino acid side chains</umod:misc_notes>
      </umod:mod>
      <umod:mod title="NEMsulfur" full_name="N-ethylmaleimideSulfur"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2012-02-29 17:06:24"
                date_time_modified="2012-03-09 11:26:23"
                approved="0"
                record_id="1326">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="157.019749" avge_mass="157.1903" composition="H(7) C(6) N O(2) S">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>NEMS</umod:alt_name>
         <umod:xref>
            <umod:text>Chemistry of Protein Conjugation and Crosslinking by Shan S. Wong, 1991, pg.32</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="SulfurDioxide" full_name="SulfurDioxide" username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2012-02-29 17:24:24"
                date_time_modified="2012-03-09 11:25:41"
                approved="0"
                record_id="1327">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="63.961900" avge_mass="64.0638" composition="O(2) S">
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Sulfur dioxide acts as a novel endogenous gaseous signaling molecule in the cardiovascular system</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/21740851</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NEMsulfurWater" full_name="N-ethylmaleimideSulfurWater"
                username_of_poster="Raghothama"
                group_of_poster=""
                date_time_posted="2012-02-29 17:25:30"
                date_time_modified="2012-03-09 11:24:53"
                approved="0"
                record_id="1328">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="175.030314" avge_mass="175.2056" composition="H(9) C(6) N O(3) S">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>NEMSwater</umod:alt_name>
         <umod:xref>
            <umod:text>Chemistry of Protein Conjugation and Crosslinking by Shan S. Wong, 1991, pg.32</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HN3_mustard"
                full_name="Modification by hydroxylated tris-(2-chloroethyl)amine (HN-3)"
                username_of_poster="vthompson"
                group_of_poster=""
                date_time_posted="2013-08-23 19:13:36"
                date_time_modified="2013-09-23 11:42:08"
                approved="0"
                record_id="1389">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:delta mono_mass="131.094629" avge_mass="131.1729" composition="H(13) C(6) N O(2)">
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Thompson, Vanessa R. and DeCaprio, Anthony P. "Covalent Adduction of Nitrogen Mustards to Model Protein Nucleophiles" Chem. Res. Toxicol., 2013, 26 (8), pp 1263-1271</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/tx400188w</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="3-phosphoglyceryl" full_name="3-phosphoglyceryl"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2013-08-05 10:54:22"
                date_time_modified="2013-11-01 16:34:45"
                approved="0"
                record_id="1387">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="167.982375" avge_mass="168.0420" composition="H(5) C(3) O(6) P">
            <umod:element symbol="H" number="5"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>PMID 23908237

'Functional lysine modification by an intrinsically reactive primary glycolytic metabolite.' Moellering and Cravatt (2013) Science 341 (6145) 549-53.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/?term=23908237</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="HN2_mustard"
                full_name="Modification by hydroxylated mechloroethamine (HN-2)"
                username_of_poster="vthompson"
                group_of_poster=""
                date_time_posted="2013-08-23 18:36:39"
                date_time_modified="2013-09-23 11:42:40"
                approved="0"
                record_id="1388">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="101.084064" avge_mass="101.1469" composition="H(11) C(5) N O">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Thompson, Vanessa R.; DeCaprio, Anthony P. "Covalent Adduction of Nitrogen Mustards to Model Protein Nucleophiles" Chem. Res. Toxicol., 2013, 26 (8), pp 1263 - 1271</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://pubs.acs.org/doi/abs/10.1021/tx400188w</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NEM:2H(5)+H2O" full_name="D5 N-ethylmaleimide+water on cysteines"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2012-10-16 17:45:04"
                date_time_modified="2012-11-02 16:22:34"
                approved="0"
                record_id="1358">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="148.089627" avge_mass="148.1714"
                     composition="H(4) 2H(5) C(6) N O(3)">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="2H" number="5"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>CysNEM D5 hydrolised</umod:alt_name>
         <umod:xref>
            <umod:text>Chemistry of protein conjugation and crosslinking by Shan S. Wong, 1991</umod:text>
            <umod:source>Book</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Lab based observation that D5 NEM hydrolyses in an analogous way to NEM</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Crotonyl" full_name="Crotonylation" username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2012-12-24 15:50:10"
                date_time_modified="2012-12-24 15:50:11"
                approved="0"
                record_id="1363">
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="68.026215" avge_mass="68.0740" composition="H(4) C(4) O">
            <umod:element symbol="H" number="4"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Identification of 67 Histone Marks and Histone Lysine Crotonylation as a New Type of Histone Modification, Tan et al., Cell 146(6) 1016–1028 2011</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1016/j.cell.2011.08.008</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="O-Et-N-diMePhospho" full_name="O-ethyl, N-dimethyl phosphate"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2013-01-27 13:26:33"
                date_time_modified="2013-02-07 16:50:38"
                approved="0"
                record_id="1364">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="135.044916" avge_mass="135.1015" composition="H(10) C(4) N O(2) P">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>tabun</umod:alt_name>
         <umod:xref>
            <umod:text>Carletti, Li, Li, Ekstrom, Nicolet, Loiodice, Gillon, Froment, Lockridge, Schopfer, Masson &amp; Nachon; J Am Chem Soc 130, 16011 (2008)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Adduct formed upon reaction of the organophosphate tabun with the active site serine of serine esterases/proteases such as butyrylcholinestease.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="N-dimethylphosphate" full_name="N-dimethylphosphate"
                username_of_poster="lmschopfer"
                group_of_poster=""
                date_time_posted="2013-01-27 13:36:32"
                date_time_modified="2013-02-07 16:49:12"
                approved="0"
                record_id="1365">
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="107.013615" avge_mass="107.0483" composition="H(6) C(2) N O(2) P">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>aged tabun</umod:alt_name>
         <umod:xref>
            <umod:text>Carletti, Li, Li, Ekstrom, Nicolet, Loiodice, Gillon, Froment, Lockridge, Schopfer, Masson &amp; Nachon [J Am Chem Soc 130, 16011 (2008)</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This adduct is a consequence of hydrolysis of the initial adduct formed by tabun (aging) on the active site serine of serine esterases/proteases such as butyrylcholinesterase.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="phosphoRibosyl" full_name="phosphate-ribosylation"
                username_of_poster="BThomas"
                group_of_poster=""
                date_time_posted="2012-09-19 14:16:08"
                date_time_modified="2012-09-24 11:54:25"
                approved="0"
                record_id="1356">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Post-translational"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="282.023960" avge_mass="282.1280" composition="H(9) C(5) N(5) O(7) P">
            <umod:element symbol="H" number="9"/>
            <umod:element symbol="C" number="5"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="7"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Reanalysis of phosphoproteomics data uncovers ADP-ribosylation sites. Matic et al. (2012) Nature Methods 9, 771–772</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.nature.com/nmeth/journal/v9/n8/full/nmeth.2106.html</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="azole" full_name="Formation of five membered aromatic heterocycle"
                username_of_poster="jomcintosh"
                group_of_poster=""
                date_time_posted="2012-09-10 17:32:20"
                date_time_modified="2012-09-15 00:33:29"
                approved="0"
                record_id="1355">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="-20.026215" avge_mass="-20.0312" composition="H(-4) O(-1)">
            <umod:element symbol="H" number="-4"/>
            <umod:element symbol="O" number="-1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>15883371</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/15883371</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>8895467</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/8895467</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>10200165</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/10200165</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Biotin:Thermo-21911" full_name="Biotin-PEG11-maleimide"
                username_of_poster="Jolein_Gloerich"
                group_of_poster=""
                date_time_posted="2012-06-26 17:49:31"
                date_time_modified="2012-07-14 19:02:40"
                approved="0"
                record_id="1340">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="921.461652" avge_mass="922.0913"
                     composition="H(71) C(41) N(5) O(16) S">
            <umod:element symbol="H" number="71"/>
            <umod:element symbol="C" number="41"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="16"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>Thermo #21911</umod:alt_name>
         <umod:xref>
            <umod:text>Pierce EZ-Link Maleimide-PEG11-Biotin</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=E3862D31-9A5C-4F0A-9879-F600D33BD926</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="iodoTMT" full_name="Native iodoacetyl Tandem Mass Tag"
                username_of_poster="rbomgard"
                group_of_poster=""
                date_time_posted="2012-07-06 17:37:43"
                date_time_modified="2012-07-14 19:04:35"
                approved="0"
                record_id="1341">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="324.216141" avge_mass="324.4185" composition="H(28) C(16) N(4) O(3)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="16"/>
            <umod:element symbol="N" number="4"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>iodoTMT0</umod:alt_name>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:alt_name>iodoTMTzero</umod:alt_name>
         <umod:xref>
            <umod:text>Tandem Mass Tag Reagents, Cysteine-Reactive</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=CB4C02C4-5056-8A76-4EF8-D72D59A2EAB9&amp;WT.mc_id=NewProdFP</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>John.C.Rogers@thermo.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>This modification describes the native iodoTMT Reagent without isotopic label. Upon CID, this reagent releases a reporter ion of 126.127725(monoisotopic mass).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="iodoTMT6plex" full_name="Sixplex iodoacetyl Tandem Mass Tag"
                username_of_poster="rbomgard"
                group_of_poster=""
                date_time_posted="2012-07-06 17:43:59"
                date_time_modified="2012-07-14 19:05:33"
                approved="0"
                record_id="1342">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="4"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="5"/>
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="329.226595" avge_mass="329.3825"
                     composition="H(28) C(12) 13C(4) N(3) 15N O(3)">
            <umod:element symbol="H" number="28"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="N" number="3"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:alt_name>iodoTMT6</umod:alt_name>
         <umod:alt_name>Tandem Mass Tag and TMT are registered Trademarks of Proteome Sciences plc.</umod:alt_name>
         <umod:alt_name>iodoTMTsixplex</umod:alt_name>
         <umod:xref>
            <umod:text>John.C.Rogers@thermo.com</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:xref>
            <umod:text>Tandem Mass Tag Reagents, Cysteine-Reactive</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/browse.cfm?fldID=CB4C02C4-5056-8A76-4EF8-D72D59A2EAB9&amp;WT.mc_id=NewProdFP</umod:url>
         </umod:xref>
         <umod:misc_notes>This modification describes the native iodoTMT Reagent without isotopic label. Upon CID, this reagent releases a reporter ions of 126.127725, 127.124760, 128.134433, 129.131468, 130.141141, and 131.138176 (monoisotopic mass).</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Gluconoylation" full_name="Gluconoylation" username_of_poster="gwadams"
                group_of_poster=""
                date_time_posted="2012-07-13 14:37:01"
                date_time_modified="2013-05-22 10:55:01"
                approved="0"
                record_id="1343">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="178.047738" avge_mass="178.1400" composition="H(10) C(6) O(6)">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="6"/>
         </umod:delta>
         <umod:xref>
            <umod:text>ABRF Delta Mass</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.abrf.org/index.cfm/dm.details?DMID=226&amp;AvgMass=all&amp;Margin=0</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>18083862</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Phosphogluconoylation" full_name="Phosphogluconoylation"
                username_of_poster="gwadams"
                group_of_poster=""
                date_time_posted="2012-07-13 14:40:15"
                date_time_modified="2013-05-22 10:55:37"
                approved="0"
                record_id="1344">
         <umod:specificity hidden="1" site="N-term" position="Any N-term"
                           classification="Post-translational"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Post-translational"
                           spec_group="1"/>
         <umod:delta mono_mass="258.014069" avge_mass="258.1199" composition="H(11) C(6) O(9) P">
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>ABRF Delta Mass</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.abrf.org/index.cfm/dm.details?DMID=275&amp;AvgMass=258&amp;Margin=0</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>18083862</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Methyl:2H(3)+Acetyl:2H(3)"
                full_name="3-fold methylated lysine labelled with Acetyl_heavy"
                username_of_poster="Plank"
                group_of_poster=""
                date_time_posted="2013-02-14 16:21:54"
                date_time_modified="2013-02-14 16:21:54"
                approved="0"
                record_id="1368">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="62.063875" avge_mass="62.1002" composition="H(-2) 2H(6) C(3) O">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(1)" full_name="Hex1dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-02-07 14:29:21"
                date_time_modified="2013-04-25 13:28:37"
                approved="0"
                record_id="1367">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="308.110732" avge_mass="308.2818" composition="dHex Hex">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="12"/>
            <umod:element symbol="O" number="9"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="methylsulfonylethyl" full_name="reaction with methyl vinyl sulfone"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2013-04-24 14:30:59"
                date_time_modified="2013-05-02 10:13:32"
                approved="0"
                record_id="1380">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="106.008850" avge_mass="106.1435" composition="H(6) C(3) O(2) S">
            <umod:element symbol="H" number="6"/>
            <umod:element symbol="C" number="3"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>protein alkylation by Michael acceptor methyl vinyl sulfone</umod:alt_name>
         <umod:xref>
            <umod:text>Protein reactions with methyl and ethyl vinyl sulfones.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/?term=2475130</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Label:2H(3)+Oxidation" full_name="Oxidised 2H(3) labelled Methionine"
                username_of_poster="Plank"
                group_of_poster=""
                date_time_posted="2013-02-14 16:36:56"
                date_time_modified="2013-02-22 12:39:51"
                approved="0"
                record_id="1370">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="19.013745" avge_mass="19.0179" composition="H(-3) 2H(3) O">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="3"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:alt_name>SILAC</umod:alt_name>
         <umod:xref>
            <umod:text>Silac introduction</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.pil.sdu.dk/silac_intro.htm</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Trimethyl:2H(9)"
                full_name="3-fold methylation with deuterated methyl groups"
                username_of_poster="Plank"
                group_of_poster=""
                date_time_posted="2013-02-14 17:14:16"
                date_time_modified="2013-02-22 12:37:25"
                approved="0"
                record_id="1371">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="51.103441" avge_mass="51.1352" composition="H(-3) 2H(9) C(3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="9"/>
            <umod:element symbol="C" number="3"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Acetyl:13C(2)" full_name="heavy acetylation" username_of_poster="Plank"
                group_of_poster=""
                date_time_posted="2013-02-14 17:24:23"
                date_time_modified="2013-02-14 17:24:23"
                approved="0"
                record_id="1372">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="44.017274" avge_mass="44.0220" composition="H(2) 13C(2) O">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="13C" number="2"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(2)" full_name="Hex2dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-04-10 14:57:30"
                date_time_modified="2013-04-25 13:29:05"
                approved="0"
                record_id="1375">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="470.163556" avge_mass="470.4224" composition="dHex Hex(2)">
            <umod:element symbol="H" number="30"/>
            <umod:element symbol="C" number="18"/>
            <umod:element symbol="O" number="14"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(3)" full_name="Hex3dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-04-10 15:00:23"
                date_time_modified="2013-04-25 13:29:21"
                approved="0"
                record_id="1376">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="632.216379" avge_mass="632.5630" composition="dHex Hex(3)">
            <umod:element symbol="H" number="40"/>
            <umod:element symbol="C" number="24"/>
            <umod:element symbol="O" number="19"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(4)" full_name="Hex4dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-04-10 15:01:35"
                date_time_modified="2013-04-25 13:29:36"
                approved="0"
                record_id="1377">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="794.269203" avge_mass="794.7036" composition="dHex Hex(4)">
            <umod:element symbol="H" number="50"/>
            <umod:element symbol="C" number="30"/>
            <umod:element symbol="O" number="24"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(5)" full_name="Hex5dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-04-10 15:03:12"
                date_time_modified="2013-04-25 13:29:52"
                approved="0"
                record_id="1378">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="956.322026" avge_mass="956.8442" composition="dHex Hex(5)">
            <umod:element symbol="H" number="60"/>
            <umod:element symbol="C" number="36"/>
            <umod:element symbol="O" number="29"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(6)" full_name="Hex6dHex1" username_of_poster="dfplazag"
                group_of_poster=""
                date_time_posted="2013-04-10 15:04:22"
                date_time_modified="2013-04-25 13:30:06"
                approved="0"
                record_id="1379">
         <umod:specificity hidden="1" site="T" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="S" position="Anywhere" classification="O-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1118.374850" avge_mass="1118.9848" composition="dHex Hex(6)">
            <umod:element symbol="H" number="70"/>
            <umod:element symbol="C" number="42"/>
            <umod:element symbol="O" number="34"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="ethylsulfonylethyl" full_name="reaction with ethyl vinyl sulfone"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2013-04-24 14:36:48"
                date_time_modified="2013-04-26 09:25:55"
                approved="0"
                record_id="1381">
         <umod:specificity hidden="1" site="H" position="Anywhere" classification="Chemical derivative"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="120.024500" avge_mass="120.1701" composition="H(8) C(4) O(2) S">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="4"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>protein alkylation by Michael acceptor ethyl vinyl sulfone</umod:alt_name>
         <umod:xref>
            <umod:text>Protein reactions with methyl and ethyl vinyl sulfones.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/2475130</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Reactions of proteins with ethyl vinyl sulfone.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/1242713</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="phenylsulfonylethyl" full_name="reaction with phenyl vinyl sulfone"
                username_of_poster="Kramerh"
                group_of_poster=""
                date_time_posted="2013-04-24 14:41:29"
                date_time_modified="2013-04-26 09:25:21"
                approved="0"
                record_id="1382">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="168.024500" avge_mass="168.2129" composition="H(8) C(8) O(2) S">
            <umod:element symbol="H" number="8"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="O" number="2"/>
            <umod:element symbol="S" number="1"/>
         </umod:delta>
         <umod:alt_name>protein alkylation by Michael acceptor phenyl vinyl sulfone</umod:alt_name>
         <umod:xref>
            <umod:text>Aryl vinyl sulfonates and sulfones as active site-directed and mechanism-based probes for protein tyrosine phosphatases.</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/18528979</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="PyridoxalPhosphateH2"
                full_name="PLP bound to lysine reduced by sodium borohydride (NaBH4) to create amine linkage"
                username_of_poster="bphilmus"
                group_of_poster=""
                date_time_posted="2013-04-29 17:33:45"
                date_time_modified="2013-05-03 17:30:38"
                approved="0"
                record_id="1383">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>This is a chemical derivatization of the PLP imine with sodium borohydride to reduce imine bound through lysine epsilon amine group to chemical stable amine linkage</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="231.029660" avge_mass="231.1425" composition="H(10) C(8) N O(5) P">
            <umod:element symbol="H" number="10"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="5"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
         <umod:alt_name>Pyridoxal Phosphate reduced</umod:alt_name>
         <umod:xref>
            <umod:text>We are currently trying to profile the PLP proteins of various bacteria and locate their binding sites using LC-MS of trypsin treated proteins. Under these condition the PLP imine is cleaved and therefore we need to reduce the imine bond to the chemical stable amine using sodium borohydride</umod:text>
            <umod:source>Other</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Homocysteic_acid" full_name="methionine oxidation to homocysteic acid"
                username_of_poster="mbern"
                group_of_poster=""
                date_time_posted="2013-05-16 20:08:11"
                date_time_modified="2013-05-31 15:57:56"
                approved="0"
                record_id="1384">
         <umod:specificity hidden="1" site="M" position="Anywhere" classification="Artefact"
                           spec_group="1"/>
         <umod:delta mono_mass="33.969094" avge_mass="33.9716" composition="H(-2) C(-1) O(3)">
            <umod:element symbol="H" number="-2"/>
            <umod:element symbol="C" number="-1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>20169556</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/20169556</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Bern, M; Saladino, J; Sharp J.S. Rapid Communications Mass Spectrometry (2010), 24(6):768-772</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2935272/</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Hydroxamic_acid"
                full_name="Conversion of carboxylic acid to hydroxamic acid"
                username_of_poster="mbern"
                group_of_poster=""
                date_time_posted="2013-05-16 20:40:47"
                date_time_modified="2013-05-31 15:58:22"
                approved="0"
                record_id="1385">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>From exposure to hydroxylamine (used with TMT)</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="D" position="Anywhere" classification="Artefact"
                           spec_group="1">
            <umod:misc_notes>From exposure to hydroxylamine (used with TMT)</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="15.010899" avge_mass="15.0146" composition="H N">
            <umod:element symbol="H" number="1"/>
            <umod:element symbol="N" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Oxidation+NEM" full_name="N-ethylmaleimide on cysteine sulfenic acid"
                username_of_poster="jheld"
                group_of_poster=""
                date_time_posted="2013-10-16 15:31:20"
                date_time_modified="2013-11-01 16:37:00"
                approved="0"
                record_id="1390">
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="141.042593" avge_mass="141.1247" composition="H(7) C(6) N O(3)">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>24103186</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="NHS-fluorescein" full_name="fluorescein-hexanoate-NHS hydrolysis"
                username_of_poster="cgadelha"
                group_of_poster=""
                date_time_posted="2013-10-18 12:14:19"
                date_time_modified="2013-11-01 16:37:42"
                approved="0"
                record_id="1391">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="471.131802" avge_mass="471.4581" composition="H(21) C(27) N O(7)">
            <umod:element symbol="H" number="21"/>
            <umod:element symbol="C" number="27"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:xref>
            <umod:text>6-[Fluorescein-5(6)-carboxamido]hexanoic acid N-hydroxysuccinimide ester, [114616-31-8]</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="DiART6plex" full_name="Representative mass and accurate mass for 114"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2013-11-06 11:18:58"
                date_time_modified="2013-11-06 11:26:11"
                approved="0"
                record_id="1392">
         <umod:specificity hidden="0" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="0" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="217.162932" avge_mass="217.2527"
                     composition="H(20) C(7) 13C(4) N 15N O(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="7"/>
            <umod:element symbol="13C" number="4"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Isobaric labeling reagent from Omic Biosystems, Inc.</umod:alt_name>
         <umod:alt_name>AKA DiART6plex114</umod:alt_name>
         <umod:xref>
            <umod:text>Revival of deuterium-labeled reagents for protein quantitation, Zeng D. and Li S.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1039/b906335h</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Novel and cost-effective 6-plex isobaric tagging reagent, DiART, is effective for identification and relative quantification of complex protein mixtures using PQD fragmentation, Ramsubramaniam N. et al.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.3249</umod:url>
         </umod:xref>
         <umod:misc_notes>Different tags have the same nominal mass but slightly different exact masses. Use this modification for all tags for quantitation purposes. Monoisotopic masses of the fragment ions to be quantified are 114.12827, 115.12531, 116.14082, 117.13786, 118.14752, 119.14456</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiART6plex115" full_name="Accurate mass for DiART6plex 115"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2013-11-06 11:34:33"
                date_time_modified="2013-11-06 11:34:33"
                approved="0"
                record_id="1393">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="217.156612" avge_mass="217.2535"
                     composition="H(20) C(8) 13C(3) 15N(2) O(2)">
            <umod:element symbol="H" number="20"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Isobaric labeling reagent from Omic Biosystems, Inc.</umod:alt_name>
         <umod:xref>
            <umod:text>Revival of deuterium-labeled reagents for protein quantitation, Zeng D. and Li S.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1039/b906335h</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Novel and cost-effective 6-plex isobaric tagging reagent, DiART, is effective for identification and relative quantification of complex protein mixtures using PQD fragmentation, Ramsubramaniam N. et al.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.3249</umod:url>
         </umod:xref>
         <umod:misc_notes>Different tags have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiART6plex116/119" full_name="Accurate mass for DiART6plex 116 and 119"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2013-11-06 11:35:52"
                date_time_modified="2013-11-06 11:38:53"
                approved="0"
                record_id="1394">
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:delta mono_mass="217.168776" avge_mass="217.2797"
                     composition="H(18) 2H(2) C(9) 13C(2) N 15N O(2)">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="13C" number="2"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="15N" number="1"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Isobaric labeling reagent from Omic Biosystems, Inc.</umod:alt_name>
         <umod:xref>
            <umod:text>Novel and cost-effective 6-plex isobaric tagging reagent, DiART, is effective for identification and relative quantification of complex protein mixtures using PQD fragmentation, Ramsubramaniam N. et al.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.3249</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Revival of deuterium-labeled reagents for protein quantitation, Zeng D. and Li S.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1039/b906335h</umod:url>
         </umod:xref>
         <umod:misc_notes>Different tags have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiART6plex117" full_name="Accurate mass for DiART6plex 117"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2013-11-06 11:40:01"
                date_time_modified="2013-11-06 11:40:01"
                approved="0"
                record_id="1395">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="217.162456" avge_mass="217.2805"
                     composition="H(18) 2H(2) C(10) 13C 15N(2) O(2)">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="10"/>
            <umod:element symbol="13C" number="1"/>
            <umod:element symbol="15N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Isobaric labeling reagent from Omic Biosystems, Inc.</umod:alt_name>
         <umod:xref>
            <umod:text>Revival of deuterium-labeled reagents for protein quantitation, Zeng D. and Li S.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1039/b906335h</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Novel and cost-effective 6-plex isobaric tagging reagent, DiART, is effective for identification and relative quantification of complex protein mixtures using PQD fragmentation, Ramsubramaniam N. et al.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.3249</umod:url>
         </umod:xref>
         <umod:misc_notes>Different tags have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="DiART6plex118" full_name="Accurate mass for DiART6plex 118"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2013-11-06 11:40:58"
                date_time_modified="2013-11-06 11:40:58"
                approved="0"
                record_id="1396">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="N-term" position="Protein N-term"
                           classification="Isotopic label"
                           spec_group="3"/>
         <umod:specificity hidden="1" site="Y" position="Anywhere" classification="Isotopic label"
                           spec_group="4">
            <umod:misc_notes>Low abundance</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="217.175096" avge_mass="217.2790"
                     composition="H(18) 2H(2) C(8) 13C(3) N(2) O(2)">
            <umod:element symbol="H" number="18"/>
            <umod:element symbol="2H" number="2"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="13C" number="3"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="2"/>
         </umod:delta>
         <umod:alt_name>Isobaric labeling reagent from Omic Biosystems, Inc.</umod:alt_name>
         <umod:xref>
            <umod:text>Revival of deuterium-labeled reagents for protein quantitation, Zeng D. and Li S.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1039/b906335h</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Novel and cost-effective 6-plex isobaric tagging reagent, DiART, is effective for identification and relative quantification of complex protein mixtures using PQD fragmentation, Ramsubramaniam N. et al.</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://dx.doi.org/10.1002/jms.3249</umod:url>
         </umod:xref>
         <umod:misc_notes>Different tags have the same nominal mass but slightly different exact masses.</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Iodoacetanilide" full_name="iodoacetanilide derivative"
                username_of_poster="kcook123"
                group_of_poster=""
                date_time_posted="2013-12-10 04:26:07"
                date_time_modified="2014-03-01 17:35:50"
                approved="0"
                record_id="1397">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:delta mono_mass="133.052764" avge_mass="133.1473" composition="H(7) C(8) N O">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="8"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Isotope-coded, iodoacetamide-based reagent to determine individual cysteine pK(a) values by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.sciencedirect.com/science/article/pii/S0003269707007907</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Iodoacetanilide:13C(6)"
                full_name="13C labelled iodoacetanilide derivative"
                username_of_poster="kcook123"
                group_of_poster=""
                date_time_posted="2013-12-10 04:31:00"
                date_time_modified="2014-03-01 17:36:23"
                approved="0"
                record_id="1398">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Artefact"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="C" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="N-term" position="Any N-term" classification="Artefact"
                           spec_group="3"/>
         <umod:delta mono_mass="139.072893" avge_mass="139.1032" composition="H(7) C(2) 13C(6) N O">
            <umod:element symbol="H" number="7"/>
            <umod:element symbol="C" number="2"/>
            <umod:element symbol="13C" number="6"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="1"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Isotope-coded, iodoacetamide-based reagent to determine individual cysteine pK(a) values by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url>http://www.sciencedirect.com/science/article/pii/S0003269707007907</umod:url>
         </umod:xref>
      </umod:mod>
      <umod:mod title="Dap-DSP" full_name="Diaminopimelic acid-DSP monolinked"
                username_of_poster="grigorios"
                group_of_poster=""
                date_time_posted="2014-02-20 11:23:24"
                date_time_modified="2014-03-01 17:37:05"
                approved="0"
                record_id="1399">
         <umod:specificity hidden="1" site="E" position="Anywhere" classification="Non-standard residue"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Non-standard residue"
                           spec_group="1"/>
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="3"/>
         <umod:delta mono_mass="328.055148" avge_mass="328.4071"
                     composition="H(16) C(13) N(2) O(4) S(2)">
            <umod:element symbol="H" number="16"/>
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="4"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
         <umod:xref>
            <umod:text>Sigma DAP data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.sigmaaldrich.com/catalog/product/sigma/07036?lang=en&amp;region=GB</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Pierce DSP data sheet</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://www.piercenet.com/product/dsp-lomants-reagent</umod:url>
         </umod:xref>
         <umod:xref>
            <umod:text>Cross-linking of the proteins in the outer membrane of Escherichia coli</umod:text>
            <umod:source>PubMed PMID</umod:source>
            <umod:url>http://www.ncbi.nlm.nih.gov/pubmed/322714?dopt=AbstractPlus</umod:url>
         </umod:xref>
         <umod:misc_notes>Gram negative peptidoglycan amino acid (DAP) mono-linked to DSP</umod:misc_notes>
      </umod:mod>
      <umod:mod title="MurNAc" full_name="N-Acetylmuramic acid" username_of_poster="grigorios"
                group_of_poster=""
                date_time_posted="2014-02-20 12:47:46"
                date_time_modified="2014-03-01 17:39:35"
                approved="0"
                record_id="1400">
         <umod:specificity hidden="1" site="A" position="Anywhere" classification="Other glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="275.100502" avge_mass="275.2552" composition="H(17) C(11) N O(7)">
            <umod:element symbol="H" number="17"/>
            <umod:element symbol="C" number="11"/>
            <umod:element symbol="N" number="1"/>
            <umod:element symbol="O" number="7"/>
         </umod:delta>
         <umod:xref>
            <umod:text>10597-89-4</umod:text>
            <umod:source>CAS Registry</umod:source>
            <umod:url/>
         </umod:xref>
         <umod:misc_notes>Gram negative peptidoglycan saccharide amide bonded to Alanine</umod:misc_notes>
      </umod:mod>
      <umod:mod title="EEEDVIEVYQEQTGG"
                full_name="Sumoylation by SUMO-1 after Cyanogen bromide (CNBr) cleavage"
                username_of_poster="vogelw"
                group_of_poster=""
                date_time_posted="2014-06-25 15:15:44"
                date_time_modified="2014-08-08 11:37:51"
                approved="0"
                record_id="1405">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1"/>
         <umod:delta mono_mass="1705.731890" avge_mass="1706.7153"
                     composition="H(107) C(72) N(17) O(31)">
            <umod:element symbol="H" number="107"/>
            <umod:element symbol="C" number="72"/>
            <umod:element symbol="N" number="17"/>
            <umod:element symbol="O" number="31"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Label:2H(7)15N(4)" full_name="Label:2H(7)15N(4)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-04-16 12:16:45"
                date_time_modified="2014-04-16 12:16:45"
                approved="0"
                record_id="1402">
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="11.032077" avge_mass="11.0168"
                     composition="H(-7) 2H(7) N(-4) 15N(4)">
            <umod:element symbol="H" number="-7"/>
            <umod:element symbol="2H" number="7"/>
            <umod:element symbol="N" number="-4"/>
            <umod:element symbol="15N" number="4"/>
         </umod:delta>
         <umod:alt_name>Cambridge Isotopes DNLM-7543-PK</umod:alt_name>
         <umod:xref>
            <umod:text>Cambridge Isotopes DNLM-7543-PK</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://shop.isotope.com/productdetails.aspx?id=10032309&amp;itemno=DNLM-7543-PK</umod:url>
         </umod:xref>
         <umod:misc_notes>For SILAC experiments</umod:misc_notes>
      </umod:mod>
      <umod:mod title="Label:2H(6)15N(1)" full_name="Label:2H(6)15N(1)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-04-16 12:19:06"
                date_time_modified="2014-04-16 12:19:06"
                approved="0"
                record_id="1403">
         <umod:specificity hidden="1" site="P" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="7.034695" avge_mass="7.0304" composition="H(-6) 2H(6) N(-1) 15N">
            <umod:element symbol="H" number="-6"/>
            <umod:element symbol="2H" number="6"/>
            <umod:element symbol="N" number="-1"/>
            <umod:element symbol="15N" number="1"/>
         </umod:delta>
         <umod:alt_name>Arg-Pro conversion of Label:2H(7)15N(4)</umod:alt_name>
         <umod:xref>
            <umod:text>Cambridge Isotopes DNLM-7543-PK</umod:text>
            <umod:source>Misc. URL</umod:source>
            <umod:url>http://shop.isotope.com/productdetails.aspx?id=10032309&amp;itemno=DNLM-7543-PK</umod:url>
         </umod:xref>
         <umod:misc_notes>For SILAC experiments</umod:misc_notes>
      </umod:mod>
      <umod:mod title="EDEDTIDVFQQQTGG"
                full_name="Sumoylation by SUMO-2/3 after Cyanogen bromide (CNBr) cleavage"
                username_of_poster="vogelw"
                group_of_poster=""
                date_time_posted="2014-06-25 15:19:11"
                date_time_modified="2014-08-08 11:37:37"
                approved="0"
                record_id="1406">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Chemical derivative"
                           spec_group="1">
            <umod:misc_notes>The cleavage products of SUMO-2 and SUMO-3 are indistinguishable</umod:misc_notes>
         </umod:specificity>
         <umod:delta mono_mass="1662.700924" avge_mass="1663.6508"
                     composition="H(102) C(69) N(18) O(30)">
            <umod:element symbol="H" number="102"/>
            <umod:element symbol="C" number="69"/>
            <umod:element symbol="N" number="18"/>
            <umod:element symbol="O" number="30"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(5)HexNAc(4)NeuAc(2)" full_name="Hex(5) HexNAc(4) NeuAc(2)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-07-31 13:51:41"
                date_time_modified="2014-07-31 13:51:41"
                approved="0"
                record_id="1408">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="2204.772441" avge_mass="2205.9822"
                     composition="Hex(5) HexNAc(4) NeuAc(2)">
            <umod:element symbol="H" number="136"/>
            <umod:element symbol="C" number="84"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="61"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Hex(5)HexNAc(4)NeuAc(1)" full_name="Hex(5) HexNAc(4) NeuAc(1)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-07-31 13:52:20"
                date_time_modified="2014-07-31 13:52:20"
                approved="0"
                record_id="1409">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="1913.677025" avge_mass="1914.7277"
                     composition="Hex(5) HexNAc(4) NeuAc">
            <umod:element symbol="H" number="119"/>
            <umod:element symbol="C" number="73"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="53"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(5)HexNAc(4)NeuAc(1)"
                full_name="dHex(1) Hex(5) HexNAc(4) NeuAc(1)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-07-31 13:53:31"
                date_time_modified="2014-07-31 13:53:31"
                approved="0"
                record_id="1410">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="2059.734933" avge_mass="2060.8689"
                     composition="dHex Hex(5) HexNAc(4) NeuAc">
            <umod:element symbol="H" number="129"/>
            <umod:element symbol="C" number="79"/>
            <umod:element symbol="N" number="5"/>
            <umod:element symbol="O" number="57"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="dHex(1)Hex(5)HexNAc(4)NeuAc(2)"
                full_name="dHex(1) Hex(5) HexNAc(4) NeuAc(2)"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-07-31 13:53:47"
                date_time_modified="2014-07-31 13:53:47"
                approved="0"
                record_id="1411">
         <umod:specificity hidden="1" site="N" position="Anywhere" classification="N-linked glycosylation"
                           spec_group="1"/>
         <umod:delta mono_mass="2350.830350" avge_mass="2352.1234"
                     composition="dHex Hex(5) HexNAc(4) NeuAc(2)">
            <umod:element symbol="H" number="146"/>
            <umod:element symbol="C" number="90"/>
            <umod:element symbol="N" number="6"/>
            <umod:element symbol="O" number="65"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="Trimethyl:13C(3)2H(9)" full_name="3-fold methylation with fully labelled methyl groups"
                username_of_poster="unimod"
                group_of_poster=""
                date_time_posted="2014-09-17 09:18:49"
                date_time_modified="2014-09-17 09:18:49"
                approved="0"
                record_id="1414">
         <umod:specificity hidden="1" site="K" position="Anywhere" classification="Isotopic label"
                           spec_group="2"/>
         <umod:specificity hidden="1" site="R" position="Anywhere" classification="Isotopic label"
                           spec_group="1"/>
         <umod:delta mono_mass="54.113505" avge_mass="54.1132" composition="H(-3) 2H(9) 13C(3)">
            <umod:element symbol="H" number="-3"/>
            <umod:element symbol="2H" number="9"/>
            <umod:element symbol="13C" number="3"/>
         </umod:delta>
         <umod:xref>
            <umod:text>none</umod:text>
            <umod:source>Journal</umod:source>
            <umod:url/>
         </umod:xref>
      </umod:mod>
      <umod:mod title="RNPXlink1" full_name="Cysteine Adduct" username_of_poster="Timo"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="0"
		record_id="99991">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Post-translational"
		 spec_group="1"/>
         <umod:delta mono_mass="151.99436" avge_mass="152.043276" composition="H(2) C(1) O(6) N(3)">
            <umod:element symbol="H" number="2"/>
            <umod:element symbol="C" number="1"/>
            <umod:element symbol="O" number="6"/>
            <umod:element symbol="N" number="3"/>
         </umod:delta>
      </umod:mod>	  
      <umod:mod title="RNPXlink2" full_name="U-H2O loss of C5H9O7P" username_of_poster="Timo"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="0"
		record_id="99992">
         <umod:specificity hidden="0" site="F" position="Anywhere" classification="Post-translational"
		 spec_group="1">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="212.0085891536" avge_mass="212.094742" flag="false" composition="C(5) H(9) O(7) P(1)">
              <umod:element symbol="C" number="5"/>
              <umod:element symbol="H" number="9"/>
              <umod:element symbol="O" number="7"/>
              <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="0" site="L" position="Anywhere" classification="Post-translational"
		 spec_group="2">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="212.0085891536" avge_mass="212.094742" flag="false" composition="C(5) H(9) O(7) P(1)">
              <umod:element symbol="C" number="5"/>
              <umod:element symbol="H" number="9"/>
              <umod:element symbol="O" number="7"/>
              <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="0" site="K" position="Anywhere" classification="Post-translational"
		 spec_group="3">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="212.0085891536" avge_mass="212.094742" flag="false" composition="C(5) H(9) O(7) P(1)">
              <umod:element symbol="C" number="5"/>
              <umod:element symbol="H" number="9"/>
              <umod:element symbol="O" number="7"/>
              <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:delta mono_mass="306.0253018503" avge_mass="306.166458" composition="C(9) H(11) N(2) O(8) P(1)">
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
      </umod:mod>
      <umod:mod title="RNPXlink3" full_name="U-H2O loss of H2PO3" username_of_poster="Timo"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="0"
		record_id="99993">
         <umod:specificity hidden="0" site="F" position="Anywhere" classification="Post-translational" spec_group="1">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="80.97415" avge_mass="80.98784" flag="false" composition="H(2) P(1) O(3)">
              <umod:element symbol="H" number="2"/>
              <umod:element symbol="O" number="3"/>
              <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Post-translational" spec_group="2">
         </umod:specificity>
         <umod:delta mono_mass="306.0253018503" avge_mass="306.166458" composition="C(9) H(11) N(2) O(8) P(1)">
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="H" number="11"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="8"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
      </umod:mod>	
      <umod:mod title="RNPXlink4" full_name="U-H2O gain of 152" username_of_poster="Timo"
                group_of_poster="admin"
                date_time_posted="2002-08-19 19:17:11"
                date_time_modified="2008-02-15 05:20:02"
                approved="0"
		record_id="99994">
         <umod:specificity hidden="0" site="C" position="Anywhere" classification="Post-translational" spec_group="1">
         </umod:specificity>
         <umod:delta mono_mass="458.02186" avge_mass="458.40709" composition="C(13) H(19) N(2) O(10) P(1) S(2)">
            <umod:element symbol="C" number="13"/>
            <umod:element symbol="H" number="19"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="10"/>
            <umod:element symbol="P" number="1"/>
            <umod:element symbol="S" number="2"/>
         </umod:delta>
      </umod:mod>	  	  
	<umod:mod title="RNPXlink5" full_name="U potential loss of H3PO4" username_of_poster="Timo"
		group_of_poster="admin"
		date_time_posted="2002-08-19 19:17:11"
		date_time_modified="2008-02-15 05:20:02"
		approved="0"
		record_id="99995">
         <umod:specificity hidden="0" site="F" position="Anywhere" classification="Post-translational" spec_group="1">
            <umod:NeutralLoss mono_mass="0.000000" avge_mass="0.0000" flag="false" composition="0"/>
            <umod:NeutralLoss mono_mass="97.9768950947" avge_mass="97.995203" flag="false" composition="H(3) P(1) O(4)">
              <umod:element symbol="H" number="3"/>
              <umod:element symbol="O" number="4"/>
              <umod:element symbol="P" number="1"/>
            </umod:NeutralLoss>
         </umod:specificity>
         <umod:specificity hidden="0" site="Y" position="Anywhere" classification="Post-translational" spec_group="2">
         </umod:specificity>
         <umod:delta mono_mass="324.03585" avge_mass="324.18405" composition="C(9) H(13) N(2) O(9) P(1)">
            <umod:element symbol="C" number="9"/>
            <umod:element symbol="H" number="13"/>
            <umod:element symbol="N" number="2"/>
            <umod:element symbol="O" number="9"/>
            <umod:element symbol="P" number="1"/>
         </umod:delta>
      </umod:mod>
   </umod:modifications>
   <umod:amino_acids>
      <umod:aa title="-" three_letter="" full_name="" mono_mass="0.0" avge_mass="0.0"/>
      <umod:aa title="A" three_letter="Ala" full_name="Alanine" mono_mass="71.037114"
               avge_mass="71.0779">
         <umod:element symbol="H" number="5"/>
         <umod:element symbol="C" number="3"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="R" three_letter="Arg" full_name="Arginine" mono_mass="156.101111"
               avge_mass="156.1857">
         <umod:element symbol="H" number="12"/>
         <umod:element symbol="C" number="6"/>
         <umod:element symbol="N" number="4"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="N" three_letter="Asn" full_name="Asparagine" mono_mass="114.042927"
               avge_mass="114.1026">
         <umod:element symbol="H" number="6"/>
         <umod:element symbol="C" number="4"/>
         <umod:element symbol="N" number="2"/>
         <umod:element symbol="O" number="2"/>
      </umod:aa>
      <umod:aa title="D" three_letter="Asp" full_name="Aspartic acid" mono_mass="115.026943"
               avge_mass="115.0874">
         <umod:element symbol="H" number="5"/>
         <umod:element symbol="C" number="4"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="3"/>
      </umod:aa>
      <umod:aa title="C" three_letter="Cys" full_name="Cysteine" mono_mass="103.009185"
               avge_mass="103.1429">
         <umod:element symbol="H" number="5"/>
         <umod:element symbol="C" number="3"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
         <umod:element symbol="S" number="1"/>
      </umod:aa>
      <umod:aa title="E" three_letter="Glu" full_name="Glutamic acid" mono_mass="129.042593"
               avge_mass="129.114">
         <umod:element symbol="H" number="7"/>
         <umod:element symbol="C" number="5"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="3"/>
      </umod:aa>
      <umod:aa title="Q" three_letter="Gln" full_name="Glutamine" mono_mass="128.058578"
               avge_mass="128.1292">
         <umod:element symbol="H" number="8"/>
         <umod:element symbol="C" number="5"/>
         <umod:element symbol="N" number="2"/>
         <umod:element symbol="O" number="2"/>
      </umod:aa>
      <umod:aa title="G" three_letter="Gly" full_name="Glycine" mono_mass="57.021464"
               avge_mass="57.0513">
         <umod:element symbol="H" number="3"/>
         <umod:element symbol="C" number="2"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="H" three_letter="His" full_name="Histidine" mono_mass="137.058912"
               avge_mass="137.1393">
         <umod:element symbol="H" number="7"/>
         <umod:element symbol="C" number="6"/>
         <umod:element symbol="N" number="3"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="I" three_letter="Ile" full_name="Isoleucine" mono_mass="113.084064"
               avge_mass="113.1576">
         <umod:element symbol="H" number="11"/>
         <umod:element symbol="C" number="6"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="L" three_letter="Leu" full_name="Leucine" mono_mass="113.084064"
               avge_mass="113.1576">
         <umod:element symbol="H" number="11"/>
         <umod:element symbol="C" number="6"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="K" three_letter="Lys" full_name="Lysine" mono_mass="128.094963"
               avge_mass="128.1723">
         <umod:element symbol="H" number="12"/>
         <umod:element symbol="C" number="6"/>
         <umod:element symbol="N" number="2"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="M" three_letter="Met" full_name="Methionine" mono_mass="131.040485"
               avge_mass="131.1961">
         <umod:element symbol="H" number="9"/>
         <umod:element symbol="C" number="5"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
         <umod:element symbol="S" number="1"/>
      </umod:aa>
      <umod:aa title="F" three_letter="Phe" full_name="Phenylalanine" mono_mass="147.068414"
               avge_mass="147.1739">
         <umod:element symbol="H" number="9"/>
         <umod:element symbol="C" number="9"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="P" three_letter="Pro" full_name="Proline" mono_mass="97.052764"
               avge_mass="97.1152">
         <umod:element symbol="H" number="7"/>
         <umod:element symbol="C" number="5"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="S" three_letter="Ser" full_name="Serine" mono_mass="87.032028"
               avge_mass="87.0773">
         <umod:element symbol="H" number="5"/>
         <umod:element symbol="C" number="3"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="2"/>
      </umod:aa>
      <umod:aa title="T" three_letter="Thr" full_name="Threonine" mono_mass="101.047679"
               avge_mass="101.1039">
         <umod:element symbol="H" number="7"/>
         <umod:element symbol="C" number="4"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="2"/>
      </umod:aa>
      <umod:aa title="W" three_letter="Trp" full_name="Tryptophan" mono_mass="186.079313"
               avge_mass="186.2099">
         <umod:element symbol="H" number="10"/>
         <umod:element symbol="C" number="11"/>
         <umod:element symbol="N" number="2"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="Y" three_letter="Tyr" full_name="Tyrosine" mono_mass="163.063329"
               avge_mass="163.1733">
         <umod:element symbol="H" number="9"/>
         <umod:element symbol="C" number="9"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="2"/>
      </umod:aa>
      <umod:aa title="V" three_letter="Val" full_name="Valine" mono_mass="99.068414"
               avge_mass="99.1311">
         <umod:element symbol="H" number="9"/>
         <umod:element symbol="C" number="5"/>
         <umod:element symbol="N" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
      <umod:aa title="N-term" three_letter="N-term" full_name="N-term" mono_mass="1.007825"
               avge_mass="1.0079">
         <umod:element symbol="H" number="1"/>
      </umod:aa>
      <umod:aa title="C-term" three_letter="C-term" full_name="C-term" mono_mass="17.00274"
               avge_mass="17.0073">
         <umod:element symbol="H" number="1"/>
         <umod:element symbol="O" number="1"/>
      </umod:aa>
   </umod:amino_acids>
   <umod:mod_bricks>
      <umod:brick title="-" full_name="" mono_mass="0" avge_mass="0"/>
      <umod:brick title="H" full_name="Hydrogen" mono_mass="1.007825035" avge_mass="1.00794">
         <umod:element symbol="H" number="1"/>
      </umod:brick>
      <umod:brick title="C" full_name="Carbon" mono_mass="12" avge_mass="12.0107">
         <umod:element symbol="C" number="1"/>
      </umod:brick>
      <umod:brick title="N" full_name="Nitrogen" mono_mass="14.003074" avge_mass="14.0067">
         <umod:element symbol="N" number="1"/>
      </umod:brick>
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                  avge_mass="2.014101779">
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      <umod:brick title="F" full_name="Fluorine" mono_mass="18.99840322" avge_mass="18.9984032">
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                  avge_mass="250.20265999999998">
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                  avge_mass="220.17668">
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                  avge_mass="291.25458000000003">
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         <umod:element symbol="Li" number="1"/>
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         <umod:element symbol="13C" number="1"/>
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         <umod:element symbol="15N" number="1"/>
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         <umod:element symbol="Cl" number="1"/>
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         <umod:element symbol="K" number="1"/>
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   </umod:mod_bricks>
</umod:unimod>
