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            "accession": "UNIMOD:890",
            "name": "DyLight-maleimide",
            "definition": "Thiol-reactive dye for fluorescence labelling of proteins.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(48) C(39) N(4) O(15) S(4)"
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                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "anikolakakis"
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                {
                    "id": "delta_avge_mass",
                    "description": "941.0762"
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                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
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                {
                    "id": "spec_1_site",
                    "description": "C"
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                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
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                {
                    "id": "record_id",
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                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "940.1999"
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                    "id": "date_time_posted",
                    "description": "2008-12-05 15:23:15"
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                    "id": "approved",
                    "description": "0"
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                    "id": "date_time_modified",
                    "description": "2008-12-15 12:17:39"
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            "accession": "UNIMOD:89",
            "name": "Iminobiotin",
            "definition": "Iminobiotinylation.",
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                    "id": "delta_composition",
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
                    "description": "toppolzer"
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                {
                    "id": "delta_avge_mass",
                    "description": "225.3106"
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                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
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                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
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                    "id": "spec_2_group",
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                    "id": "spec_2_position",
                    "description": "Any N-term"
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                    "id": "spec_2_classification",
                    "description": "Chemical derivative"
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                {
                    "id": "delta_mono_mass",
                    "description": "225.093583"
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                    "id": "spec_2_hidden",
                    "description": "1"
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                    "id": "spec_1_hidden",
                    "description": "1"
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                    "id": "spec_2_site",
                    "description": "N-term"
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                {
                    "id": "record_id",
                    "description": "89"
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                    "id": "spec_1_position",
                    "description": "Anywhere"
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                {
                    "id": "date_time_posted",
                    "description": "2002-11-25 16:01:48"
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                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 15:26:37"
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            ]
        },
        {
            "accession": "UNIMOD:889",
            "name": "mTRAQ:13C(3)15N(1)",
            "definition": "MTRAQ medium.",
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                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_5_group",
                    "description": "5"
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                {
                    "id": "spec_4_position",
                    "description": "Anywhere"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Isotopic label"
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                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "144.102063"
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                {
                    "id": "spec_6_site",
                    "description": "T"
                },
                {
                    "id": "spec_4_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_3_misc_notes",
                    "description": "Low abundance"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
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                {
                    "id": "spec_2_site",
                    "description": "N-term"
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                    "id": "spec_3_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_6_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_3_site",
                    "description": "Y"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-12-05 09:26:02"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(12) C(4) 13C(3) N 15N O"
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                {
                    "id": "spec_3_hidden",
                    "description": "0"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "144.1544"
                },
                {
                    "id": "spec_4_site",
                    "description": "H"
                },
                {
                    "id": "spec_6_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_5_site",
                    "description": "S"
                },
                {
                    "id": "spec_5_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_5_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "0"
                },
                {
                    "id": "record_id",
                    "description": "889"
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                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_6_hidden",
                    "description": "1"
                },
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                    "id": "spec_4_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_6_group",
                    "description": "6"
                },
                {
                    "id": "spec_6_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-25 10:34:05"
                }
            ]
        },
        {
            "accession": "UNIMOD:888",
            "name": "mTRAQ",
            "definition": "MTRAQ light.",
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                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_5_group",
                    "description": "5"
                },
                {
                    "id": "spec_4_position",
                    "description": "Anywhere"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
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                    "id": "spec_1_site",
                    "description": "K"
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                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "140.094963"
                },
                {
                    "id": "spec_6_site",
                    "description": "T"
                },
                {
                    "id": "spec_4_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_3_misc_notes",
                    "description": "Low abundance"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_6_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_3_site",
                    "description": "Y"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-12-04 13:50:02"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(12) C(7) N(2) O"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "0"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "140.183"
                },
                {
                    "id": "spec_4_site",
                    "description": "H"
                },
                {
                    "id": "spec_6_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_5_site",
                    "description": "S"
                },
                {
                    "id": "spec_5_misc_notes",
                    "description": "Very low abundance"
                },
                {
                    "id": "spec_5_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "0"
                },
                {
                    "id": "record_id",
                    "description": "888"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_6_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_6_group",
                    "description": "6"
                },
                {
                    "id": "spec_6_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-25 10:30:51"
                }
            ]
        },
        {
            "accession": "UNIMOD:887",
            "name": "MDCC",
            "definition": "Covalent linkage of maleimidyl coumarin probe (Molecular Probes D-10253).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(21) C(20) N(3) O(5)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "shartson"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "383.3978"
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                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "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."
                },
                {
                    "id": "record_id",
                    "description": "887"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "383.148121"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-12-03 16:20:46"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-12-05 09:32:22"
                }
            ]
        },
        {
            "accession": "UNIMOD:886",
            "name": "HydroxymethylOP",
            "definition": "2-ammonio-6-[4-(hydroxymethyl)-3-oxidopyridinium-1-yl]- hexanoate.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C(6) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "AndrewW"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "108.0948"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Advanced Glycation Endproduct"
                },
                {
                    "id": "record_id",
                    "description": "886"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "108.021129"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-11-03 14:35:36"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-11-09 17:49:00"
                }
            ]
        },
        {
            "accession": "UNIMOD:885",
            "name": "Label:13C(1)2H(3)+Oxidation",
            "definition": "Oxidised methionine 13C(1)2H(3) SILAC label.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-3) 2H(3) C(-1) 13C O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "20.0105"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Multiple"
                },
                {
                    "id": "record_id",
                    "description": "885"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "20.0171"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-10-24 09:47:20"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2009-09-25 13:15:07"
                }
            ]
        },
        {
            "accession": "UNIMOD:884",
            "name": "Biotin:Thermo-21325",
            "definition": "Was ChromoBiotin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(45) C(34) N(7) O(7) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "chens002"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "695.8288"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "884"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "695.310118"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-10-20 13:26:20"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-12-03 16:04:54"
                }
            ]
        },
        {
            "accession": "UNIMOD:877",
            "name": "QQQTGG",
            "definition": "SUMOylation by SUMO-2/3.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(37) C(23) N(9) O(10)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "oosula"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "599.5942"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "This peptide is generated from a trypsin/chymotrypsin dual digest"
                },
                {
                    "id": "record_id",
                    "description": "877"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "599.266339"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-09-09 17:09:04"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-09-19 19:06:46"
                }
            ]
        },
        {
            "accession": "UNIMOD:876",
            "name": "QEQTGG",
            "definition": "SUMOylation by SUMO-1.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(36) C(23) N(8) O(11)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "oosula"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "600.5789"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "This peptide is generated from a trypsin/chymotrypsin dual digest."
                },
                {
                    "id": "record_id",
                    "description": "876"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "600.250354"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-09-09 17:02:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-25 13:05:17"
                }
            ]
        },
        {
            "accession": "UNIMOD:866",
            "name": "ICPL:13C(6)2H(4)",
            "definition": "Bruker Daltonics SERVA-ICPL(TM) quantification chemistry, +10 Da form.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-1) 2H(4) 13C(6) N O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_2_misc_notes",
                    "description": "Use when labelling pre-digest"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "0"
                },
                {
                    "id": "username_of_poster",
                    "description": "suckau"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "115.0747"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Protein N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_3_position",
                    "description": "Any N-term"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "115.0667"
                },
                {
                    "id": "spec_3_misc_notes",
                    "description": "Use when labelling post-digest"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "866"
                },
                {
                    "id": "spec_3_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-09-03 15:17:21"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-09-12 11:59:23"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                }
            ]
        },
        {
            "accession": "UNIMOD:864",
            "name": "Label:13C(6)15N(2)+GG",
            "definition": "13C(6) 15N(2) Lysine glygly.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(6) C(-2) 13C(6) 15N(2) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Raghothama"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "122.0454"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Used in SILAC PTM (glygly) experiment"
                },
                {
                    "id": "record_id",
                    "description": "864"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "122.057126"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-08-13 21:56:52"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2014-07-09 16:53:44"
                }
            ]
        },
        {
            "accession": "UNIMOD:862",
            "name": "Label:13C(1)2H(3)",
            "definition": "SILAC.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-3) 2H(3) C(-1) 13C"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "msalek"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "4.0111"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Isotopic labeled methionine SILAC"
                },
                {
                    "id": "record_id",
                    "description": "862"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "4.022185"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-08-11 13:43:25"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-08-14 18:16:30"
                }
            ]
        },
        {
            "accession": "UNIMOD:861",
            "name": "ZGB",
            "definition": "NHS ester linked Green Fluorescent Bodipy Dye.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(53) B C(37) N(6) O(6) F(2) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "JBowden"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "758.7261"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Other"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "758.380841"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "record_id",
                    "description": "861"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-07-30 14:51:06"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-09-22 21:42:19"
                }
            ]
        },
        {
            "accession": "UNIMOD:860",
            "name": "G-H1",
            "definition": "Glyoxal-derived hydroimiadazolone.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(2) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "AndrewW"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "40.0208"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "record_id",
                    "description": "860"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "39.994915"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-07-24 14:44:11"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-07-31 17:16:39"
                }
            ]
        },
        {
            "accession": "UNIMOD:859",
            "name": "MG-H1",
            "definition": "Methylglyoxal-derived hydroimidazolone.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(2) C(3) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "AndrewW"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "54.0474"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "record_id",
                    "description": "859"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "54.010565"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-07-24 14:41:07"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-07-31 17:14:35"
                }
            ]
        },
        {
            "accession": "UNIMOD:853",
            "name": "Label:2H(4)+GG",
            "definition": "Ubiquitination 2H4 lysine.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(2) 2H(4) C(4) N(2) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Raghothama"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "118.1273"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "853"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "118.068034"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-06-27 14:28:36"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2014-07-09 16:52:49"
                }
            ]
        },
        {
            "accession": "UNIMOD:851",
            "name": "cGMP+RMP-loss",
            "definition": "S-guanylation-2.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C(5) N(5) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "atsushiirie"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "150.1182"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "150.041585"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "S"
                },
                {
                    "id": "record_id",
                    "description": "851"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-06-21 09:06:56"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2009-05-24 20:03:08"
                }
            ]
        },
        {
            "accession": "UNIMOD:849",
            "name": "cGMP",
            "definition": "S-guanylation.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(10) C(10) N(5) O(7) P"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "atsushiirie"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "343.1895"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "343.031785"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "S"
                },
                {
                    "id": "record_id",
                    "description": "849"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-06-21 09:02:53"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2014-02-08 02:24:10"
                }
            ]
        },
        {
            "accession": "UNIMOD:848",
            "name": "Arg2PG",
            "definition": "Adduct of phenylglyoxal with Arg.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(10) C(16) O(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Kramerh"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "266.2482"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "The reaction product of Arg with phenylglyoxal has been shown to be a 2:1 adduct"
                },
                {
                    "id": "record_id",
                    "description": "848"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "266.057909"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-05-16 11:07:51"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-11-21 18:13:56"
                }
            ]
        }
    ]
}