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            "accession": "UNIMOD:1126",
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                    "id": "spec_2_group",
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                    "id": "spec_2_position",
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                    "id": "delta_mono_mass",
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        },
        {
            "accession": "UNIMOD:1127",
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                    "id": "delta_composition",
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        {
            "accession": "UNIMOD:589",
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            "definition": "Leu/Ile->Asn substitution.",
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                {
                    "id": "delta_composition",
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            "accession": "UNIMOD:609",
            "name": "Xle->Arg",
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                    "id": "delta_composition",
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                    "id": "spec_2_group",
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                    "id": "spec_2_hidden",
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                    "id": "spec_2_site",
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                    "id": "record_id",
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        },
        {
            "accession": "UNIMOD:1125",
            "name": "Xle->Ala",
            "definition": "Leu/Ile->Ala substitution.",
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                {
                    "id": "delta_composition",
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                    "id": "delta_composition",
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                    "id": "username_of_poster",
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                    "id": "group_of_poster",
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                    "id": "spec_1_hidden",
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                {
                    "id": "spec_1_site",
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                    "id": "record_id",
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                    "id": "delta_composition",
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                    "id": "username_of_poster",
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                    "id": "spec_1_classification",
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        },
        {
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                    "description": "2011-06-23 11:23:33"
                }
            ]
        },
        {
            "accession": "UNIMOD:1222",
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            "definition": "Val->Trp substitution.",
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                    "id": "delta_composition",
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                },
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                    "id": "spec_1_group",
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                    "id": "group_of_poster",
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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",
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                },
                {
                    "id": "delta_mono_mass",
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                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:23:11"
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                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:23:11"
                }
            ]
        },
        {
            "accession": "UNIMOD:1221",
            "name": "Val->Thr",
            "definition": "Val->Thr substitution.",
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                {
                    "id": "delta_composition",
                    "description": "H(-2) C(-1) O"
                },
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
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                {
                    "id": "group_of_poster",
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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"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "1.979265"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:22:49"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:22:49"
                }
            ]
        },
        {
            "accession": "UNIMOD:1220",
            "name": "Val->Ser",
            "definition": "Val->Ser substitution.",
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                {
                    "id": "delta_composition",
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
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                },
                {
                    "id": "spec_1_classification",
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                {
                    "id": "record_id",
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                },
                {
                    "id": "spec_1_position",
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                },
                {
                    "id": "delta_mono_mass",
                    "description": "-12.036386"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:22:26"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:22:26"
                }
            ]
        },
        {
            "accession": "UNIMOD:1217",
            "name": "Val->Pro",
            "definition": "Val->Pro substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-2.0159"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "V"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1217"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-2.01565"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:21:23"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:21:23"
                }
            ]
        },
        {
            "accession": "UNIMOD:666",
            "name": "Val->Phe",
            "definition": "Val->Phe substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "C(4)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "48.0428"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "V"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "666"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "48"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 12:39:35"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 12:39:35"
                }
            ]
        },
        {
            "accession": "UNIMOD:669",
            "name": "Val->Met",
            "definition": "Val->Met substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "32.065"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "V"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "669"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "31.972071"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 12:40:36"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 12:40:36"
                }
            ]
        },
        {
            "accession": "UNIMOD:1215",
            "name": "Val->Lys",
            "definition": "Val->Lys substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(3) C N"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "29.0412"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "V"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1215"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "29.026549"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:20:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:20:45"
                }
            ]
        },
        {
            "accession": "UNIMOD:1214",
            "name": "Val->His",
            "definition": "Val->His substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-2) C N(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "38.0082"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "V"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1214"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "37.990498"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:20:23"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:20:23"
                }
            ]
        },
        {
            "accession": "UNIMOD:2119",
            "name": "ValGly",
            "definition": "UFMylation residue.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(12) C(7) N(2) O(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "pscaturro"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "156.1824"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "2119"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "156.089878"
                },
                {
                    "id": "date_time_posted",
                    "description": "2024-06-26 14:09:36"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2024-06-26 14:09:36"
                }
            ]
        }
    ]
}