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 {
  "observation_id": 760,
  "peptide": "DGEAGAQGPPGPAGPAGER",
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  "protein_accession": "P02452",
  "protein_name": "Collagen alpha-1(I) chain",
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  "tissue": "Pancreas",
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  "status": "approved",
  "flags": ""
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 {
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  "proforma": "[Oxidation]?DGEAGAQGPPGPAGPAGER",
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  "species": "Homo sapiens",
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  "tissue": "Pancreas",
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  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Pancreas",
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  "flags": "reported_theoretical_differs"
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  "protein_name": "Collagen alpha-1(I) chain",
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  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Pancreas",
  "uberon_id": "UBERON:0001264",
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  "doi": "10.1007/s00216-010-3554-6",
  "status": "approved",
  "flags": "reported_theoretical_differs"
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  "protein_name": "Collagen alpha-1(I) chain",
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  "adduct": "H",
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  "taxon_id": 9606,
  "tissue": "Pancreas",
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  "doi": "10.1007/s00216-010-3554-6",
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  "protein_name": "Collagen alpha-1(I) chain",
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  "ppm_error": -1.2,
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  "tissue": "Pancreas",
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  "protein_name": "Collagen alpha-1(I) chain",
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  "status": "approved",
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 {
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  "status": "approved",
  "flags": ""
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 {
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  "peptide": "GETGPAGPAGPVGPVGAR",
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  "taxon_id": 9606,
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  "flags": ""
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 {
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 {
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 {
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 {
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 {
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  "protein_name": "Collagen alpha-1(I) chain",
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  "flags": "reported_theoretical_differs"
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 {
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  "doi": "10.1021/pr900522m",
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  "flags": ""
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 {
  "observation_id": 843,
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  "protein_name": "Collagen alpha-1(I) chain",
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  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Pancreas",
  "uberon_id": "UBERON:0001264",
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  "status": "approved",
  "flags": "reported_theoretical_differs"
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  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Lung",
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  "doi": "10.1002/pmic.200800495",
  "status": "approved",
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 {
  "observation_id": 848,
  "peptide": "GVVGLPGQR",
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  "protein_name": "Collagen alpha-1(I) chain",
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  "species": "Homo sapiens",
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  "peptide": "GVVGLPGQR",
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  "protein_name": "Collagen alpha-1(I) chain",
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  "ppm_error": -0.55,
  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Pancreas",
  "uberon_id": "UBERON:0001264",
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  "doi": "10.1007/s00216-010-3554-6",
  "status": "approved",
  "flags": "reported_theoretical_differs"
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 {
  "observation_id": 1347,
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  "protein_accession": "P02452",
  "protein_name": "Collagen alpha-1(I) chain",
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  "species": "Homo sapiens",
  "taxon_id": 9606,
  "tissue": "Pancreas",
  "uberon_id": "UBERON:0001264",
  "condition": "Pancreatic tumour",
  "doi": "10.1007/s00216-010-3554-6",
  "status": "approved",
  "flags": "reported_theoretical_differs"
 }
]