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                    "id": "delta_mono_mass",
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                    "id": "date_time_modified",
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                    "id": "spec_1_classification",
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                    "id": "spec_2_position",
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                    "id": "spec_2_classification",
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                    "id": "spec_3_position",
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                {
                    "id": "delta_mono_mass",
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                {
                    "id": "spec_3_misc_notes",
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                    "id": "spec_2_hidden",
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                    "id": "spec_4_hidden",
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                    "id": "spec_2_site",
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                {
                    "id": "spec_1_misc_notes",
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                    "id": "spec_3_classification",
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                    "id": "spec_3_site",
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                    "id": "spec_3_group",
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                    "id": "username_of_poster",
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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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                    "id": "date_time_modified",
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                    "id": "group_of_poster",
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                    "id": "spec_3_misc_notes",
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                    "id": "spec_2_hidden",
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                    "id": "spec_5_classification",
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                    "id": "spec_3_classification",
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                    "id": "spec_5_hidden",
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                    "id": "approved",
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                    "id": "spec_3_group",
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                    "id": "delta_composition",
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                    "id": "username_of_poster",
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                    "id": "delta_avge_mass",
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                    "id": "spec_5_site",
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                    "id": "spec_5_misc_notes",
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                {
                    "id": "spec_5_position",
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                {
                    "id": "spec_1_hidden",
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                    "id": "spec_1_position",
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                    "id": "spec_1_classification",
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                    "id": "spec_2_group",
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                    "id": "spec_2_position",
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                    "id": "spec_2_classification",
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                    "id": "delta_mono_mass",
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                    "id": "spec_1_hidden",
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                    "id": "spec_2_site",
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                    "id": "record_id",
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                    "id": "group_of_poster",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "spec_1_position",
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                    "id": "spec_1_position",
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                    "id": "date_time_posted",
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                {
                    "id": "date_time_modified",
                    "description": "2024-08-12 11:33:03"
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        {
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                    "id": "spec_1_site",
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                {
                    "id": "spec_1_classification",
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                {
                    "id": "spec_1_position",
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        },
        {
            "accession": "UNIMOD:1005",
            "name": "Label:13C(6)15N(4)+Dimethyl",
            "definition": "Dimethylated Arg13C(6) 15N(4).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C(-4) 13C(6) N(-4) 15N(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "37.9827"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1005"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "38.039569"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-10-27 10:52:10"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-11-05 16:49:29"
                }
            ]
        },
        {
            "accession": "UNIMOD:1007",
            "name": "Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2)",
            "definition": "2H(6) 13C(2) Dimethylated Arg13C(6) 15N(4).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) 2H(6) C(-6) 13C(8) N(-4) 15N(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "46.005"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1007"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "46.083939"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-10-27 11:07:29"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-11-05 16:54:24"
                }
            ]
        },
        {
            "accession": "UNIMOD:1004",
            "name": "Label:13C(6)15N(4)+Methyl",
            "definition": "Monomethylated Arg13C(6) 15N(4).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(2) C(-5) 13C(6) N(-4) 15N(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "23.9561"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1004"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "24.023919"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-10-27 10:36:31"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-11-05 16:47:36"
                }
            ]
        },
        {
            "accession": "UNIMOD:1006",
            "name": "Label:13C(6)15N(4)+Methyl:2H(3)13C(1)",
            "definition": "2H(3) 13C(1) monomethylated Arg13C(6) 15N(4).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-1) 2H(3) C(-6) 13C(7) N(-4) 15N(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "BThomas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "27.9673"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "R"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "record_id",
                    "description": "1006"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "28.046104"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-10-27 10:59:21"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-11-05 16:53:21"
                }
            ]
        },
        {
            "accession": "UNIMOD:835",
            "name": "Label:13C(6)+Acetyl",
            "definition": "Acetyl 13C(6) Silac label.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(2) C(-4) 13C(6) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Raghothama"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "47.9926"
                },
                {
                    "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": "SILAC and PTM"
                },
                {
                    "id": "record_id",
                    "description": "835"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "48.030694"
                },
                {
                    "id": "date_time_posted",
                    "description": "2008-03-24 17:33:44"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2008-04-02 10:14:57"
                }
            ]
        },
        {
            "accession": "UNIMOD:986",
            "name": "Label:13C(6)+Dimethyl",
            "definition": "Dimethyl 13C(6) Silac label.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(4) C(-4) 13C(6)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "glick2"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "34.0091"
                },
                {
                    "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": "SILAC+PTM"
                },
                {
                    "id": "record_id",
                    "description": "986"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "34.051429"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-05-09 10:48:19"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-05-14 16:19:43"
                }
            ]
        },
        {
            "accession": "UNIMOD:799",
            "name": "Label:13C(6)+GG",
            "definition": "13C6 labeled ubiquitinylation residue.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(6) C(-2) 13C(6) N(2) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "glick2"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "120.0586"
                },
                {
                    "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": "record_id",
                    "description": "799"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "120.063056"
                },
                {
                    "id": "date_time_posted",
                    "description": "2007-12-02 22:45:39"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2014-07-09 16:53:01"
                }
            ]
        },
        {
            "accession": "UNIMOD:184",
            "name": "Label:13C(9)",
            "definition": "13C(9) Silac label.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(-9) 13C(9)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "hs"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "8.9339"
                },
                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "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": "9.030193"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "F"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Used in SILAC experiment"
                },
                {
                    "id": "record_id",
                    "description": "184"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2004-02-16 21:19:47"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2007-08-22 18:31:52"
                }
            ]
        }
    ]
}