[
 {
  "observation_id": 714,
  "peptide": "AGLQFPVGR",
  "proforma": "AGLQFPVGR",
  "protein_accession": "Q99878",
  "protein_name": "Histone H2A type 1-J",
  "measured_mz": 944.5,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 944.53123,
  "ppm_error": -33.06,
  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 748,
  "peptide": "AVFPSIVGRPR",
  "proforma": "AVFPSIVGRPR",
  "protein_accession": "P62737",
  "protein_name": "Actin, aortic smooth muscle",
  "measured_mz": 1198.7,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1198.7055,
  "ppm_error": -4.59,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 818,
  "peptide": "GGHGAEYGAEALER",
  "proforma": "GGHGAEYGAEALER",
  "protein_accession": "P01942",
  "protein_name": "Hemoglobin subunit alpha",
  "measured_mz": 1416.7,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1416.65023,
  "ppm_error": 35.13,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1330,
  "peptide": "TYFPHFDVSHGSAQVK",
  "proforma": "TYFPHFDVSHGSAQVK",
  "protein_accession": "P01942",
  "protein_name": "Hemoglobin subunit alpha",
  "measured_mz": 1819.8,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1819.87621,
  "ppm_error": -41.88,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1332,
  "peptide": "VADALASAAGHLDDLPGALSALSDLHAHK",
  "proforma": "VADALASAAGHLDDLPGALSALSDLHAHK",
  "protein_accession": "P01942",
  "protein_name": "Hemoglobin subunit alpha",
  "measured_mz": 2836.4,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 2836.4588,
  "ppm_error": -20.73,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1353,
  "peptide": "VNSDEVGGEALGR",
  "proforma": "VNSDEVGGEALGR",
  "protein_accession": "P02088",
  "protein_name": "Hemoglobin subunit beta-1",
  "measured_mz": 1302.6,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1302.62843,
  "ppm_error": -21.83,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 },
 {
  "observation_id": 1366,
  "peptide": "YRPGTVALR",
  "proforma": "YRPGTVALR",
  "protein_accession": "P68433",
  "protein_name": "Histone H3.1",
  "measured_mz": 1032.6,
  "charge": 1,
  "adduct": "H",
  "theoretical_mz": 1032.59489,
  "ppm_error": 4.95,
  "species": "Mus musculus",
  "taxon_id": 10090,
  "tissue": "Tumour (site not stated)",
  "uberon_id": "",
  "condition": "Tumour",
  "doi": "10.1016/j.ymeth.2011.03.007",
  "status": "approved",
  "flags": ""
 }
]