[
 {
  "observation_id": 737,
  "peptide": "ASQKRPSQRHG",
  "proforma": "[Acetyl]-ASQKRPSQRHG",
  "protein_accession": "P02688",
  "protein_name": "Myelin basic protein",
  "measured_mz": 1293.82,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1293.67706,
  "ppm_error": 110.49,
  "species": "Rattus norvegicus",
  "taxon_id": 10116,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1586/14789450.2013.814939",
  "status": "approved",
  "flags": "reported_theoretical_differs"
 },
 {
  "observation_id": 738,
  "peptide": "ASQKRPSQRHGSKYLA",
  "proforma": "[Acetyl]-ASQKRPSQRHGSKYLA",
  "protein_accession": "P02688",
  "protein_name": "Myelin basic protein",
  "measured_mz": 1855.99,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1855.98855,
  "ppm_error": 0.78,
  "species": "Rattus norvegicus",
  "taxon_id": 10116,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1586/14789450.2013.814939",
  "status": "approved",
  "flags": "reported_theoretical_differs"
 },
 {
  "observation_id": 758,
  "peptide": "DENPVVHFFKNIVTP",
  "proforma": "DENPVVHFFKNIVTP",
  "protein_accession": "P02688",
  "protein_name": "Myelin basic protein",
  "measured_mz": 1756.01,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1755.90645,
  "ppm_error": 58.97,
  "species": "Rattus norvegicus",
  "taxon_id": 10116,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1586/14789450.2013.814939",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1062,
  "peptide": "PVVHFFKNIVTPR",
  "proforma": "PVVHFFKNIVTPR",
  "protein_accession": "P02688",
  "protein_name": "Myelin basic protein",
  "measured_mz": 1553.89,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1553.89509,
  "ppm_error": -3.28,
  "species": "Rattus norvegicus",
  "taxon_id": 10116,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1586/14789450.2013.814939",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1305,
  "peptide": "TGILDSIGRFFSGDR",
  "proforma": "TGILDSIGRFFSGDR",
  "protein_accession": "P02688",
  "protein_name": "Myelin basic protein",
  "measured_mz": 1640.83,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1640.8391,
  "ppm_error": -5.54,
  "species": "Rattus norvegicus",
  "taxon_id": 10116,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1586/14789450.2013.814939",
  "status": "approved",
  "flags": ""
 }
]