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        },
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            "accession": "UNIMOD:1239",
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            "accession": "UNIMOD:1238",
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                },
                {
                    "id": "delta_avge_mass",
                    "description": "-34.0593"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1238"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-34.020735"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:46:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:46:45"
                }
            ]
        },
        {
            "accession": "UNIMOD:1243",
            "name": "Tyr->Gln",
            "definition": "Tyr->Gln substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-1) C(-4) N"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-35.044"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "1243"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-35.004751"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-06-23 11:48:28"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-06-23 11:48:28"
                }
            ]
        },
        {
            "accession": "UNIMOD:400",
            "name": "Tyr->Dha",
            "definition": "Dehydroalanine (from Tyrosine).",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-6) C(-6) O(-1)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-94.1112"
                },
                {
                    "id": "group_of_poster",
                    "description": "admin"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Post-translational"
                },
                {
                    "id": "record_id",
                    "description": "400"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-94.041865"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-10-11 20:17:48"
                },
                {
                    "id": "approved",
                    "description": "1"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-10-13 15:02:50"
                }
            ]
        },
        {
            "accession": "UNIMOD:683",
            "name": "Tyr->Cys",
            "definition": "Tyr->Cys substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-4) C(-6) O(-1) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-60.0304"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "683"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-60.054144"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 12:46:03"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 12:46:03"
                }
            ]
        },
        {
            "accession": "UNIMOD:682",
            "name": "Tyr->Asp",
            "definition": "Tyr->Asp substitution.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(-4) C(-5) O"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "unimod"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "-48.0859"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "Y"
                },
                {
                    "id": "spec_1_classification",
                    "description": "AA substitution"
                },
                {
                    "id": "record_id",
                    "description": "682"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "-48.036386"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-11-09 12:45:44"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2006-11-09 12:45:44"
                }
            ]
        }
    ]
}