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        {
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                {
                    "id": "delta_composition",
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                    "id": "date_time_modified",
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        },
        {
            "accession": "UNIMOD:625",
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                    "id": "delta_composition",
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                    "id": "date_time_modified",
                    "description": "2006-11-09 11:38:18"
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            ]
        },
        {
            "accession": "UNIMOD:1922",
            "name": "Pro->HAVA",
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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_1_site",
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                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "1922"
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                {
                    "id": "spec_1_position",
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                    "id": "delta_mono_mass",
                    "description": "18.010565"
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                    "id": "date_time_posted",
                    "description": "2017-11-03 09:13:16"
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                    "id": "approved",
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                },
                {
                    "id": "date_time_modified",
                    "description": "2017-11-03 09:13:16"
                }
            ]
        },
        {
            "accession": "UNIMOD:1170",
            "name": "Pro->Gly",
            "definition": "Pro->Gly substitution.",
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                {
                    "id": "delta_composition",
                    "description": "H(-4) C(-3)"
                },
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
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                    "id": "delta_avge_mass",
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                    "id": "group_of_poster",
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                {
                    "id": "spec_1_site",
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                },
                {
                    "id": "spec_1_classification",
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                {
                    "id": "record_id",
                    "description": "1170"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-40.0313"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-21 17:27:17"
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                {
                    "id": "approved",
                    "description": "0"
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                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 17:27:17"
                }
            ]
        },
        {
            "accession": "UNIMOD:1168",
            "name": "Pro->Glu",
            "definition": "Pro->Glu substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
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                    "id": "username_of_poster",
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                {
                    "id": "delta_avge_mass",
                    "description": "31.9988"
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                {
                    "id": "group_of_poster",
                    "description": ""
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                    "id": "spec_1_hidden",
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                {
                    "id": "spec_1_site",
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                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "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",
                    "description": "2011-06-21 17:26:36"
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                    "id": "approved",
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                    "id": "date_time_modified",
                    "description": "2011-06-21 17:26:36"
                }
            ]
        },
        {
            "accession": "UNIMOD:626",
            "name": "Pro->Gln",
            "definition": "Pro->Gln substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H N O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
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                    "id": "username_of_poster",
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                {
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                    "id": "group_of_poster",
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                    "id": "spec_1_site",
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                },
                {
                    "id": "spec_1_classification",
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                },
                {
                    "id": "record_id",
                    "description": "626"
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                {
                    "id": "spec_1_position",
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                {
                    "id": "delta_mono_mass",
                    "description": "31.005814"
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                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 11:38:40"
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                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 11:38:40"
                }
            ]
        },
        {
            "accession": "UNIMOD:1166",
            "name": "Pro->Cys",
            "definition": "Pro->Cys substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) C(-2) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "6.0277"
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                {
                    "id": "group_of_poster",
                    "description": ""
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                    "id": "spec_1_hidden",
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                },
                {
                    "id": "spec_1_site",
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                },
                {
                    "id": "spec_1_classification",
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                },
                {
                    "id": "record_id",
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                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
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                    "id": "delta_mono_mass",
                    "description": "5.956421"
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                {
                    "id": "date_time_posted",
                    "description": "2011-06-21 16:59:55"
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                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 16:59:55"
                }
            ]
        },
        {
            "accession": "UNIMOD:357",
            "name": "probiotinhydrazide",
            "definition": "Oxidized proline biotinylated with biotin hydrazide.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(18) C(10) N(4) O(2) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "258.3405"
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                {
                    "id": "group_of_poster",
                    "description": "admin"
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                {
                    "id": "spec_1_hidden",
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                },
                {
                    "id": "spec_1_site",
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                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "357"
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                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "258.115047"
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                {
                    "id": "date_time_posted",
                    "description": "2005-09-10 22:56:20"
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                    "description": "0"
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                {
                    "id": "date_time_modified",
                    "description": "2006-11-14 12:12:19"
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            ]
        },
        {
            "accession": "UNIMOD:1167",
            "name": "Pro->Asp",
            "definition": "Pro->Asp substitution.",
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                {
                    "id": "delta_composition",
                    "description": "H(-2) C(-1) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "17.9722"
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                {
                    "id": "group_of_poster",
                    "description": ""
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                    "id": "spec_1_hidden",
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                    "id": "spec_1_site",
                    "description": "P"
                },
                {
                    "id": "spec_1_classification",
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                {
                    "id": "record_id",
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                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "17.974179"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-21 17:00:24"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 17:00:24"
                }
            ]
        },
        {
            "accession": "UNIMOD:1173",
            "name": "Pro->Asn",
            "definition": "Pro->Asn substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-1) C(-1) N O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "16.9875"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "P"
                },
                {
                    "id": "spec_1_classification",
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                },
                {
                    "id": "record_id",
                    "description": "1173"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "16.990164"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-21 17:28:18"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-21 17:28:18"
                }
            ]
        },
        {
            "accession": "UNIMOD:628",
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            "definition": "Pro->Arg substitution.",
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                    "id": "delta_composition",
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                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "59.0705"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "P"
                },
                {
                    "id": "spec_1_classification",
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                },
                {
                    "id": "record_id",
                    "description": "628"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "59.048347"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 11:39:29"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 11:39:29"
                }
            ]
        },
        {
            "accession": "UNIMOD:624",
            "name": "Pro->Ala",
            "definition": "Pro->Ala substitution.",
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                {
                    "id": "delta_composition",
                    "description": "H(-2) C(-2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-26.0373"
                },
                {
                    "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": "624"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-26.01565"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 11:37:56"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 11:37:56"
                }
            ]
        },
        {
            "accession": "UNIMOD:2055",
            "name": "pRBS-ID_6-thioguanosine",
            "definition": "RNA-protein UVA-crosslinked, hydrofluoride-digested 6-thioguanosine adduct.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(11) C(10) N(5) O(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "jwbaebio"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "265.2254"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "W"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_1_neutral_loss_133_mono_mass",
                    "description": "132.042259"
                },
                {
                    "id": "spec_1_neutral_loss_133_avge_mass",
                    "description": "132.1146"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "265.081104"
                },
                {
                    "id": "spec_1_neutral_loss_133_flag",
                    "description": "false"
                },
                {
                    "id": "spec_1_neutral_loss_133_composition",
                    "description": "H(8) C(5) O(4)"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Crosslink to all 20 amino acids. Not C-term (Missed cleavage). Partial in-source fragmentation & near-complete HCD-mediated fragmentation to 6-thioguanine form: H(3) C(5) N(5)"
                },
                {
                    "id": "record_id",
                    "description": "2055"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2021-10-16 02:54:01"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2022-01-10 11:08:54"
                }
            ]
        },
        {
            "accession": "UNIMOD:2054",
            "name": "pRBS-ID_4-thiouridine",
            "definition": "RNA-protein UVA-crosslinked, hydrofluoride-digested 4-thiouridine adduct.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(10) C(9) N(2) O(5)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "jwbaebio"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "226.1861"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "F"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "spec_1_neutral_loss_133_mono_mass",
                    "description": "132.042259"
                },
                {
                    "id": "spec_1_neutral_loss_133_avge_mass",
                    "description": "132.1146"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "226.058972"
                },
                {
                    "id": "spec_1_neutral_loss_133_flag",
                    "description": "false"
                },
                {
                    "id": "spec_1_neutral_loss_133_composition",
                    "description": "H(8) C(5) O(4)"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_misc_notes",
                    "description": "Crosslink to all 20 amino acids. Not C-term (Missed cleavage). Partial in-source fragmentation & near-complete HCD-mediated fragmentation to 4-thiouracil form: H(2) C(4) N(2) O(1)"
                },
                {
                    "id": "record_id",
                    "description": "2054"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2021-10-16 02:47:03"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2022-01-10 11:09:17"
                }
            ]
        },
        {
            "accession": "UNIMOD:520",
            "name": "Piperidine",
            "definition": "Piperidination.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(8) C(5)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "PhilipHsu"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "68.117"
                },
                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Any N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "68.0626"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "N-term"
                },
                {
                    "id": "record_id",
                    "description": "520"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-07-20 08:37:21"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-17 12:05:44"
                }
            ]
        },
        {
            "accession": "UNIMOD:389",
            "name": "Phytochromobilin",
            "definition": "Phytochromobilin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(36) C(33) N(4) O(6)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "584.6621"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "389"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "584.263485"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-11 18:23:58"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 17:07:22"
                }
            ]
        },
        {
            "accession": "UNIMOD:388",
            "name": "Phycoerythrobilin",
            "definition": "Phycoerythrobilin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(40) C(33) N(4) O(6)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "588.6939"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "388"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "588.294785"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-11 18:08:38"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 17:08:02"
                }
            ]
        },
        {
            "accession": "UNIMOD:387",
            "name": "Phycocyanobilin",
            "definition": "Phycocyanobilin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(38) C(33) N(4) O(6)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "586.678"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "387"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "586.279135"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-11 18:06:19"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 17:07:44"
                }
            ]
        },
        {
            "accession": "UNIMOD:417",
            "name": "PhosphoUridine",
            "definition": "Uridine phosphodiester.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(11) C(9) N(2) O(8) P"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "306.166"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "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": "306.025302"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "record_id",
                    "description": "417"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-15 16:38:18"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 15:52:11"
                }
            ]
        },
        {
            "accession": "UNIMOD:395",
            "name": "PhosphoribosyldephosphoCoA",
            "definition": "Phosphoribosyl dephospho-coenzyme A.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(42) C(26) N(7) O(19) P(3) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "881.6335"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "S"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "395"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "881.146904"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-11 19:42:56"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-16 17:19:42"
                }
            ]
        }
    ]
}