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                {
                    "id": "spec_3_site",
                    "description": "E"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-03-24 16:31:28"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(-1) 2H(3) C"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "ndacoyas"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "17.0451"
                },
                {
                    "id": "spec_4_site",
                    "description": "K"
                },
                {
                    "id": "spec_5_site",
                    "description": "R"
                },
                {
                    "id": "spec_5_misc_notes",
                    "description": "SILAC labelling with L-Methionine-(methyl-d3)"
                },
                {
                    "id": "spec_5_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "record_id",
                    "description": "298"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Isotopic label"
                },
                {
                    "id": "date_time_modified",
                    "description": "2013-02-07 16:43:18"
                }
            ]
        },
        {
            "accession": "UNIMOD:284",
            "name": "Methyl:2H(2)",
            "definition": "Deuterium Methylation of Lysine.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "2H(2) C"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Glebivanov"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "16.0389"
                },
                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "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": "delta_mono_mass",
                    "description": "16.028204"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "record_id",
                    "description": "284"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-02-13 01:26:38"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2016-06-14 11:53:24"
                }
            ]
        },
        {
            "accession": "UNIMOD:34",
            "name": "Methyl",
            "definition": "Methylation.",
            "additional_data": [
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_9_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_5_group",
                    "description": "5"
                },
                {
                    "id": "spec_9_site",
                    "description": "L"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "14.01565"
                },
                {
                    "id": "spec_6_site",
                    "description": "Q"
                },
                {
                    "id": "spec_14_group",
                    "description": "14"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_9_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_10_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_14_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_7_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "date_time_posted",
                    "description": "2002-08-19 19:17:11"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "spec_9_group",
                    "description": "9"
                },
                {
                    "id": "spec_7_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "14.0266"
                },
                {
                    "id": "spec_14_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_site",
                    "description": "N"
                },
                {
                    "id": "spec_11_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_7_site",
                    "description": "R"
                },
                {
                    "id": "spec_11_group",
                    "description": "11"
                },
                {
                    "id": "spec_10_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_8_site",
                    "description": "I"
                },
                {
                    "id": "record_id",
                    "description": "34"
                },
                {
                    "id": "spec_7_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_8_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_13_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_11_position",
                    "description": "Any C-term"
                },
                {
                    "id": "date_time_modified",
                    "description": "2015-08-26 14:39:25"
                },
                {
                    "id": "spec_12_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_4_position",
                    "description": "Anywhere"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_10_position",
                    "description": "Protein N-term"
                },
                {
                    "id": "spec_12_group",
                    "description": "12"
                },
                {
                    "id": "spec_11_site",
                    "description": "C-term"
                },
                {
                    "id": "spec_9_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_7_group",
                    "description": "7"
                },
                {
                    "id": "spec_14_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_6_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "delta_composition",
                    "description": "H(2) C"
                },
                {
                    "id": "spec_11_classification",
                    "description": "Multiple"
                },
                {
                    "id": "spec_12_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_8_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_8_group",
                    "description": "8"
                },
                {
                    "id": "spec_13_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_13_site",
                    "description": "S"
                },
                {
                    "id": "spec_14_site",
                    "description": "T"
                },
                {
                    "id": "spec_5_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_13_group",
                    "description": "13"
                },
                {
                    "id": "spec_8_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_10_group",
                    "description": "10"
                },
                {
                    "id": "spec_12_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_5_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_10_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_6_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_6_group",
                    "description": "6"
                },
                {
                    "id": "spec_12_site",
                    "description": "E"
                },
                {
                    "id": "spec_13_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "spec_6_classification",
                    "description": "Post-translational"
                }
            ]
        },
        {
            "accession": "UNIMOD:11",
            "name": "Met->Hsl",
            "definition": "Homoserine lactone.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-4) C(-1) S(-1)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-48.1075"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "11"
                },
                {
                    "id": "spec_1_position",
                    "description": "Any C-term"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-48.003371"
                },
                {
                    "id": "date_time_posted",
                    "description": "2002-08-19 19:17:11"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-14 11:10:15"
                }
            ]
        },
        {
            "accession": "UNIMOD:10",
            "name": "Met->Hse",
            "definition": "Homoserine.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) C(-1) O S(-1)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-30.0922"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "0"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "10"
                },
                {
                    "id": "spec_1_position",
                    "description": "Any C-term"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-29.992806"
                },
                {
                    "id": "date_time_posted",
                    "description": "2002-08-19 19:17:11"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-13 15:40:08"
                }
            ]
        },
        {
            "accession": "UNIMOD:899",
            "name": "Met->Hpg",
            "definition": "Methionine replacement by homopropargylglycine.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) C S(-1)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "Kramerh"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-22.0702"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Non-standard residue"
                },
                {
                    "id": "record_id",
                    "description": "899"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-21.987721"
                },
                {
                    "id": "date_time_posted",
                    "description": "2009-02-24 17:11:44"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2009-03-13 16:00:16"
                }
            ]
        },
        {
            "accession": "UNIMOD:1148",
            "name": "Met->His",
            "definition": "Met->His substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) C N(2) S(-1)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "5.9432"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1148"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "6.018427"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-21 16:30:50"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 16:30:50"
                }
            ]
        },
        {
            "accession": "UNIMOD:2007",
            "name": "Methamidophos-S",
            "definition": "S-methyl amino phosphinate.",
            "additional_data": [
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_5_group",
                    "description": "5"
                },
                {
                    "id": "spec_4_position",
                    "description": "Anywhere"
                },
                {
                    "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": "108.975121"
                },
                {
                    "id": "spec_6_site",
                    "description": "Y"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_6_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2019-03-22 16:54:28"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(4) C N O P S"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "lmschopfer"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "109.0873"
                },
                {
                    "id": "spec_4_site",
                    "description": "S"
                },
                {
                    "id": "spec_5_site",
                    "description": "T"
                },
                {
                    "id": "spec_5_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "record_id",
                    "description": "2007"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_6_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_6_group",
                    "description": "6"
                },
                {
                    "id": "spec_6_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "date_time_modified",
                    "description": "2019-05-22 14:56:50"
                }
            ]
        },
        {
            "accession": "UNIMOD:2008",
            "name": "Methamidophos-O",
            "definition": "O-methyl amino phosphinate.",
            "additional_data": [
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_5_group",
                    "description": "5"
                },
                {
                    "id": "spec_4_position",
                    "description": "Anywhere"
                },
                {
                    "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": "92.997965"
                },
                {
                    "id": "spec_6_site",
                    "description": "Y"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_5_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_5_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_6_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "date_time_posted",
                    "description": "2019-03-22 17:03:48"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                },
                {
                    "id": "delta_composition",
                    "description": "H(4) C N O(2) P"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "lmschopfer"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "93.0217"
                },
                {
                    "id": "spec_4_site",
                    "description": "S"
                },
                {
                    "id": "spec_5_site",
                    "description": "T"
                },
                {
                    "id": "spec_5_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "record_id",
                    "description": "2008"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_6_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_6_group",
                    "description": "6"
                },
                {
                    "id": "spec_6_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "date_time_modified",
                    "description": "2019-05-22 14:57:05"
                }
            ]
        }
    ]
}