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                    "id": "record_id",
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                    "id": "spec_1_position",
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        {
            "accession": "UNIMOD:877",
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                    "id": "username_of_poster",
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                    "id": "spec_1_site",
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                    "id": "spec_1_classification",
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                    "id": "spec_1_misc_notes",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "delta_mono_mass",
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                    "id": "date_time_posted",
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                    "id": "date_time_modified",
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                    "id": "username_of_poster",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "delta_mono_mass",
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                    "id": "username_of_poster",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "delta_mono_mass",
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                    "id": "group_of_poster",
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                    "id": "date_time_modified",
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        {
            "accession": "UNIMOD:31",
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                    "id": "record_id",
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                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 12:43:38"
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        },
        {
            "accession": "UNIMOD:25",
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                    "id": "delta_composition",
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                    "id": "delta_avge_mass",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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        },
        {
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                    "id": "delta_composition",
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                },
                {
                    "id": "delta_avge_mass",
                    "description": "231.1425"
                },
                {
                    "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": "spec_1_misc_notes",
                    "description": "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"
                },
                {
                    "id": "record_id",
                    "description": "1383"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "231.02966"
                },
                {
                    "id": "date_time_posted",
                    "description": "2013-04-29 17:33:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2013-05-03 17:30:38"
                }
            ]
        },
        {
            "accession": "UNIMOD:46",
            "name": "PyridoxalPhosphate",
            "definition": "Pyridoxal phosphate.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(8) C(8) N O(5) P"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "229.1266"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "46"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "229.014009"
                },
                {
                    "id": "date_time_posted",
                    "description": "2002-08-19 19:17:11"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 15:35:42"
                }
            ]
        },
        {
            "accession": "UNIMOD:501",
            "name": "PyMIC",
            "definition": "3-methyl-2-pyridyl isocyanate.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(6) C(7) N(2) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "TING"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "134.1353"
                },
                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "501"
                },
                {
                    "id": "spec_1_position",
                    "description": "Any N-term"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "134.048013"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-04-18 20:46:17"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-17 12:19:15"
                }
            ]
        },
        {
            "accession": "UNIMOD:973",
            "name": "Puromycin",
            "definition": "Puromycin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(27) C(22) N(7) O(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "hooverdm"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "453.4943"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C-term"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Co-translational"
                },
                {
                    "id": "record_id",
                    "description": "973"
                },
                {
                    "id": "spec_1_position",
                    "description": "Any C-term"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "453.212452"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-02-12 20:50:31"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-04-12 15:38:52"
                }
            ]
        },
        {
            "accession": "UNIMOD:1264",
            "name": "pupylation",
            "definition": "Addition of GGE.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(13) C(9) N(3) O(5)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "hbromage"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "243.2166"
                },
                {
                    "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": "1264"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "243.085521"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-07-13 21:34:29"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-07-24 12:24:34"
                }
            ]
        },
        {
            "accession": "UNIMOD:1345",
            "name": "PS_Hapten",
            "definition": "Reaction with phenyl salicylate (PS).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C(7) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "120.1055"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "120.021129"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "1345"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2012-08-01 14:45:32"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2012-08-03 09:20:17"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                }
            ]
        },
        {
            "accession": "UNIMOD:629",
            "name": "Pro->Xle",
            "definition": "Pro->Leu/Ile substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "16.0425"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "P"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "629"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "16.0313"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 11:39:47"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 15:09:36"
                }
            ]
        }
    ]
}