{
    "title": "Novel glycosylated forms of human plasma endostatin and circulating endostatin-related fragments of collagen XV.",
    "journal": "Biochemistry",
    "date": "1999",
    "authors": "John H, Preissner KT, Forssmann WG, Standker L",
    "reference": {
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        "id": "10441114",
        "url": "https://pubmed.ncbi.nlm.nih.gov/10441114"
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            "uniprot_canonical_ac": "P39060-3",
            "protein_name": "Collagen alpha-1(XVIII) chain",
            "gene_name": "COL18A1",
            "tax_name": "Human"
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    ],
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            "name": "Homo sapiens",
            "taxid": 9606,
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            "common_name": "Human",
            "glygen_name": "Human",
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        }
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            "end_pos": 1567,
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                },
                {
                    "id": "GLY_000040",
                    "database": "UniCarbKB",
                    "url": "http://data.glygen.org/GLY_000040"
                },
                {
                    "id": "127",
                    "database": "GlyConnect",
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            },
            "site_seq": "T",
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            "comment": "O-linked (GalNAc...) threonine O-GalNAcylation",
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    "abstract": "",
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