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                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Artefact"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Artefact"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 13:21:06"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(6) C(4) N(2) O(2)"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "114.1026"
                },
                {
                    "id": "spec_4_site",
                    "description": "R"
                },
                {
                    "id": "spec_5_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_5_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "record_id",
                    "description": "1290"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Artefact"
                },
                {
                    "id": "date_time_modified",
                    "description": "2013-05-16 10:59:12"
                }
            ]
        },
        {
            "accession": "UNIMOD:1291",
            "name": "Dimethyl:2H(6)",
            "definition": "Dimethyl-Medium.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) 2H(6) C(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "34.0901"
                },
                {
                    "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"
                },
                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "34.068961"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1291"
                },
                {
                    "id": "spec_3_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 13:27:00"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2013-02-22 12:32:45"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                }
            ]
        },
        {
            "accession": "UNIMOD:1292",
            "name": "GGQ",
            "definition": "SUMOylation leaving GlyGlyGln.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(14) C(9) N(4) O(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "242.2319"
                },
                {
                    "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": "1292"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "242.101505"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 13:37:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-21 13:53:21"
                }
            ]
        },
        {
            "accession": "UNIMOD:1293",
            "name": "QTGG",
            "definition": "SUMOylation leaving GlnThrGlyGly.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(21) C(13) N(5) O(6)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "343.3357"
                },
                {
                    "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": "1293"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "343.149184"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 13:41:32"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-25 13:05:55"
                }
            ]
        },
        {
            "accession": "UNIMOD:1296",
            "name": "Label:13C(3)",
            "definition": "13C3 label for SILAC.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(-3) 13C(3)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "2.978"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "A"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1296"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "3.010064"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 14:36:18"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-21 14:37:03"
                }
            ]
        },
        {
            "accession": "UNIMOD:1297",
            "name": "Label:13C(3)15N(1)",
            "definition": "SILAC or AQUA label.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(-3) 13C(3) N(-1) 15N"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "3.9714"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "A"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "4.007099"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "S"
                },
                {
                    "id": "record_id",
                    "description": "1297"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 14:37:53"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2020-01-09 09:44:52"
                }
            ]
        },
        {
            "accession": "UNIMOD:1298",
            "name": "Label:13C(4)15N(1)",
            "definition": "13C4 15N1 label for SILAC.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(-4) 13C(4) N(-1) 15N"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "4.964"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "D"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1298"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "5.010454"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-11-21 14:40:56"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-11-21 14:40:56"
                }
            ]
        }
    ]
}