[
 {
  "observation_id": 1368,
  "peptide": "YSMVGGNLVINNPDK",
  "proforma": "YSM[Oxidation]VGGNLVINNPDK",
  "protein_accession": "P12960",
  "protein_name": "Contactin-1",
  "measured_mz": 1636.7827148,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1636.79993,
  "ppm_error": -10.52,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Brain",
  "uberon_id": "UBERON:0000955",
  "condition": "",
  "doi": "10.1021/ac503952q",
  "status": "approved",
  "flags": "reported_theoretical_differs"
 }
]