prsm_data =
{
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        "sequence_name": "sp|P68684|RS21_SALTY",
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        "compatible_proteoform_number": "1",
        "compatible_proteoform": {
            "sequence_id": "5",
            "sequence_name": "sp|P68684|RS21_SALTY",
            "sequence_description": "30S ribosomal protein S21 OS=Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) OX=99287 GN=rpsU PE=3 SV=2",
            "proteoform_id": "5",
            "prsm_number": "9",
            "prsm": [
                {
                    "prsm_id": "30",
                    "p_value": "8.25e-08",
                    "e_value": "8.25e-10",
                    "fdr": "0",
                    "matched_fragment_number": "8",
                    "matched_peak_number": "9",
                    "ms": {
                        "ms_header": {
                            "spectrum_file_name": "C:/toppic_tutorial/tutorial_2/st_1_ms2.msalign",
                            "ms1_ids": "389",
                            "ms1_scans": "763",
                            "ids": "373",
                            "scans": "764",
                            "precursor_mono_mass": "8420.6764",
                            "precursor_charge": "15",
                            "precursor_mz": "562.3857",
                            "feature_inte": "4.3789e+07"
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                        "proteoform_id": "5",
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                        "proteoform_mass": "8420.7075",
                        "n_acetylation": "0",
                        "unexpected_shift_number": "0",
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                            "protein_length": "71",
                            "first_residue_position": "1",
                            "last_residue_position": "70",
                            "annotated_seq": "M.PVIKVRENEPFDVALRRFKRS(C)[Carbamidomethylation]EKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKLARENARRTRLY.",
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                                {
                                    "position": "0",
                                    "acid": "M"
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                                    "acid": "P"
                                },
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                                    "acid": "V"
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                                    "acid": "I"
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                                {
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                                    "acid": "K"
                                },
                                {
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                                    "position": "6",
                                    "acid": "R"
                                },
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                                    "acid": "E"
                                },
                                {
                                    "position": "8",
                                    "acid": "N"
                                },
                                {
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                                    "acid": "E"
                                },
                                {
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                                    "acid": "P"
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                                    "acid": "F"
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                                    "acid": "D"
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                                    "acid": "V"
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                                    "acid": "A"
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                                    "acid": "L"
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                                    "acid": "R"
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                                    "acid": "R"
                                },
                                {
                                    "position": "18",
                                    "acid": "F"
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                                    "position": "19",
                                    "acid": "K"
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                                {
                                    "position": "20",
                                    "acid": "R"
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                                {
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                                    "acid": "S"
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                                {
                                    "position": "22",
                                    "acid": "C"
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                                    "position": "23",
                                    "acid": "E"
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                                {
                                    "position": "24",
                                    "acid": "K"
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                                    "acid": "A"
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                                    "acid": "G"
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                                    "acid": "V"
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                                    "acid": "L"
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                                    "acid": "R"
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                                    "acid": "E"
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                                    "acid": "N"
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