{
    "uniprot_canonical_ac": "Q5GH67-1",
    "uniprot_ac": "Q5GH67",
    "uniprot_id": "XKR4_MOUSE",
    "mass": {
        "chemical_mass": 71503.0,
        "monoisotopic_mass": 71503.0
    },
    "refseq": {
        "ac": "NP_001011874",
        "name": "XK-related protein 4",
        "summary": "",
        "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874"
    },
    "gene_names": [
        {
            "name": "Xkr4",
            "resource": "UniProtKB",
            "type": "recommended",
            "url": "https://www.uniprot.org/uniprot/Q5GH67",
            "id": "Q5GH67"
        },
        {
            "name": "Gm210; mKIAA1889; XRG4",
            "resource": "RefSeq",
            "type": "synonym",
            "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874",
            "id": "NP_001011874"
        },
        {
            "name": "Xkr4",
            "resource": "RefSeq",
            "type": "synonym",
            "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874",
            "id": "NP_001011874"
        },
        {
            "name": "Xrg4",
            "resource": "UniProtKB",
            "type": "synonym",
            "url": "https://www.uniprot.org/uniprot/Q5GH67",
            "id": "Q5GH67"
        }
    ],
    "protein_names": [
        {
            "name": "XK-related protein 4",
            "resource": "UniProtKB",
            "type": "recommended",
            "url": "",
            "id": "Q5GH67"
        },
        {
            "name": "X Kell blood group precursor related family member 4",
            "resource": "RefSeq",
            "type": "synonym",
            "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874",
            "id": "NP_001011874"
        },
        {
            "name": "XK-related protein 4",
            "resource": "RefSeq",
            "type": "synonym",
            "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874",
            "id": "NP_001011874"
        }
    ],
    "function": [
        {
            "annotation": "Caspase cleavage releases a nuclear protein fragment that stimulates phospholipid scrambling at the plasma membrane.",
            "evidence": [
                {
                    "database": "RefSeq",
                    "id": "NP_001011874",
                    "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874"
                },
                {
                    "database": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                }
            ]
        },
        {
            "annotation": "Phospholipid scramblase that promotes phosphatidylserine exposure on apoptotic cell surface (PubMed:25231987, PubMed:33725486). Phosphatidylserine is a specific marker only present at the surface of apoptotic cells and acts as a specific signal for engulfment (PubMed:25231987, PubMed:33725486).",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67#function"
                },
                {
                    "database": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                },
                {
                    "database": "PubMed",
                    "id": "25231987",
                    "url": "https://glygen.org/publication/PubMed/25231987"
                }
            ]
        },
        {
            "annotation": "Unlike Xkr8, which is ubiquitously expressed, Xkr4 and Xkr9 expression is tissue-specific.",
            "evidence": [
                {
                    "database": "RefSeq",
                    "id": "NP_001011874",
                    "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874"
                },
                {
                    "database": "PubMed",
                    "id": "25231987",
                    "url": "https://glygen.org/publication/PubMed/25231987"
                }
            ]
        }
    ],
    "disease": [],
    "snv": [],
    "mutagenesis": [
        {
            "start_pos": 322,
            "end_pos": 322,
            "sequence_org": "I",
            "sequence_mut": "S",
            "comment": "Displays constitutive phospholipid scramblase activity.",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                }
            ]
        },
        {
            "start_pos": 331,
            "end_pos": 331,
            "sequence_org": "L",
            "sequence_mut": "F",
            "comment": "Displays constitutive phospholipid scramblase activity.",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                }
            ]
        },
        {
            "start_pos": 332,
            "end_pos": 332,
            "sequence_org": "Q",
            "sequence_mut": "E",
            "comment": "Displays constitutive phospholipid scramblase activity.",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                }
            ]
        },
        {
            "start_pos": 564,
            "end_pos": 564,
            "sequence_org": "D",
            "sequence_mut": "A",
            "comment": "In 1DA mutant; abolished cleavage by caspase, preventing phospholipid scramblase activity.",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "25231987",
                    "url": "https://glygen.org/publication/PubMed/25231987"
                }
            ]
        }
    ],
    "expression_tissue": [],
    "expression_disease": [],
    "species": [
        {
            "name": "Mus musculus",
            "taxid": 10090,
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                }
            ],
            "common_name": "Mouse"
        }
    ],
    "gene": [
        {
            "name": "Xkr4",
            "url": "https://www.uniprot.org/uniprot/Q5GH67",
            "locus": {
                "chromosome": "1",
                "start_pos": 3276124,
                "end_pos": 3741721,
                "strand": "+",
                "evidence": [
                    {
                        "database": "Ensembl Gene",
                        "id": "ENSMUSG00000051951",
                        "url": "https://www.ensembl.org/id/ENSMUSG00000051951"
                    }
                ]
            }
        }
    ],
    "crossref": [
        {
            "id": "ENSMUSG00000051951",
            "url": "https://bgee.org/?page=gene&gene_id=ENSMUSG00000051951",
            "database": "Bgee",
            "categories": [
                "Gene Expression"
            ]
        },
        {
            "id": "497097",
            "url": "https://www.ncbi.nlm.nih.gov/gene/497097",
            "database": "GeneID",
            "categories": [
                "Genome Annotation"
            ]
        },
        {
            "id": "IPR018629",
            "url": "https://www.ebi.ac.uk/interpro/entry/IPR018629",
            "database": "InterPro",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "mmu:497097",
            "url": "https://www.genome.jp/dbget-bin/get_linkdb?-t+pathway+mmu:497097",
            "database": "KEGG Pathway",
            "categories": [
                "Enzyme and Pathway"
            ]
        },
        {
            "id": "3528744",
            "url": "http://www.informatics.jax.org/marker/MGI:3528744",
            "database": "MGI",
            "categories": [
                "Organism-specific"
            ]
        },
        {
            "id": "SDGRRKM",
            "url": "https://omabrowser.org/oma/group/SDGRRKM/",
            "database": "OMA",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "3385375at2759",
            "url": "http://www.orthodb.org/?query=3385375at2759",
            "database": "OrthoDB",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "PTHR16024",
            "url": "http://www.pantherdb.org/panther/family.do?clsAccession=PTHR16024",
            "database": "PANTHER",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "PTHR16024:SF16",
            "url": "http://www.pantherdb.org/panther/family.do?clsAccession=PTHR16024:SF16",
            "database": "PANTHER",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "PF09815",
            "url": "http://pfam.xfam.org/family/PF09815",
            "database": "Pfam",
            "categories": [
                "Protein Classification"
            ]
        },
        {
            "id": "PR_Q5GH67",
            "url": "http://purl.obolibrary.org/obo/PR_Q5GH67",
            "database": "PRO",
            "categories": [
                "Protein"
            ]
        },
        {
            "id": "NP_001011874",
            "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874",
            "database": "RefSeq",
            "categories": [
                "Protein"
            ]
        },
        {
            "id": "38663",
            "url": "https://www.rhea-db.org/rhea/38663",
            "database": "Rhea",
            "categories": [
                "Enzyme and Pathway"
            ]
        },
        {
            "id": "Q5GH67",
            "url": "https://www.uniprot.org/uniprot/Q5GH67",
            "database": "UniProtKB",
            "categories": [
                "Protein"
            ]
        },
        {
            "id": "Q5GH67-1",
            "url": "https://www.uniprot.org/uniprot/Q5GH67-1",
            "database": "UniProtKB",
            "categories": [
                "Protein"
            ]
        }
    ],
    "sequence": {
        "sequence": "MAAKSDGRLKMKKSSDVAFTPLQNSDNSGSVQGLAPGLPSGSGAEDTEAAGGGCCPDGGGCSRCCCCCAGSGGSAGSGGSGGGGRGSGAGSAALCLRLGREQRRYSLWDCLWILAAVAVYFADVGTDIWLAVDYYLRGQRWWFGLTLFFVVLGSLSVQVFSFRWFVHDFSTEDSSTTTTSSCQQPGADCKTVVSSGSAAGEGEVRPSTPQRQASNASKSNIAATNSGSNSNGATRTSGKHRSASCSFCIWLLQSLIHILQLGQIWRYLHTIYLGIRSRQSGESGRWRFYWKMVYEYADVSMLHLLATFLESAPQLVLQLCIIVQTHSLQALQGFTAAASLVSLAWALASYQKALRDSRDDKKPISYMAVIIQFCWHFFTIAARVITFALFASVFQLYFGIFIVLHWCIMTFWIVHCETEFCITKWEEIVFDMVVGIIYIFSWFNVKEGRTRCRLFIYYFVILLENTALSALWYLYKAPQIADAFAIPALCVVFSSFLTGVVFMLMYYAFFHPNGPRFGQSPSCACDDPATAFSLPPEVATSTLRSISNNRSVASDRDQKFAERDGCVPVFQVRPTAPPTPSSRPPRIEESVIKIDLFRNRYPAWERHVLDRSLRKAILAFECSPSPPRLQYKDDALIQERLEYETTL",
        "length": 647,
        "header": "sp|Q5GH67-1|XKR4_MOUSE Isoform 1 of XK-related protein 4  OS=Mus musculus OX=10090 GN=Xkr4 PE=1 SV=1 CANONICAL=Q5GH67-1"
    },
    "isoforms": [
        {
            "isoform_ac": "Q5GH67-1",
            "url": "",
            "sequence": {
                "sequence": "MAAKSDGRLKMKKSSDVAFTPLQNSDNSGSVQGLAPGLPSGSGAEDTEAAGGGCCPDGGGCSRCCCCCAGSGGSAGSGGSGGGGRGSGAGSAALCLRLGREQRRYSLWDCLWILAAVAVYFADVGTDIWLAVDYYLRGQRWWFGLTLFFVVLGSLSVQVFSFRWFVHDFSTEDSSTTTTSSCQQPGADCKTVVSSGSAAGEGEVRPSTPQRQASNASKSNIAATNSGSNSNGATRTSGKHRSASCSFCIWLLQSLIHILQLGQIWRYLHTIYLGIRSRQSGESGRWRFYWKMVYEYADVSMLHLLATFLESAPQLVLQLCIIVQTHSLQALQGFTAAASLVSLAWALASYQKALRDSRDDKKPISYMAVIIQFCWHFFTIAARVITFALFASVFQLYFGIFIVLHWCIMTFWIVHCETEFCITKWEEIVFDMVVGIIYIFSWFNVKEGRTRCRLFIYYFVILLENTALSALWYLYKAPQIADAFAIPALCVVFSSFLTGVVFMLMYYAFFHPNGPRFGQSPSCACDDPATAFSLPPEVATSTLRSISNNRSVASDRDQKFAERDGCVPVFQVRPTAPPTPSSRPPRIEESVIKIDLFRNRYPAWERHVLDRSLRKAILAFECSPSPPRLQYKDDALIQERLEYETTL",
                "length": 647,
                "header": "sp|Q5GH67-1|XKR4_MOUSE Isoform 1 of XK-related protein 4  OS=Mus musculus OX=10090 GN=Xkr4 PE=1 SV=1 CANONICAL=Q5GH67-1"
            },
            "locus": {
                "chromosome": "1",
                "start_pos": 3741571,
                "end_pos": 3286248,
                "strand": "+",
                "evidence": [
                    {
                        "database": "Ensembl Transcript",
                        "id": "ENSMUST00000070533",
                        "url": "https://www.ensembl.org/id/ENSMUST00000070533"
                    },
                    {
                        "database": "Ensembl Peptide",
                        "id": "ENSMUSP00000070648",
                        "url": "https://www.ensembl.org/id/ENSMUSP00000070648"
                    }
                ]
            }
        }
    ],
    "glycosylation": [],
    "phosphorylation": [
        {
            "start_pos": 197,
            "end_pos": 197,
            "kinase_uniprot_canonical_ac": "",
            "kinase_gene_name": "",
            "residue": "Ser",
            "comment": "Phosphoserine",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "21183079",
                    "url": "https://glygen.org/publication/PubMed/21183079"
                },
                {
                    "database": "iPTMnet",
                    "id": "Q5GH67",
                    "url": "http://research.bioinformatics.udel.edu/iptmnet/entry/Q5GH67"
                }
            ],
            "site_lbl": "Ser197"
        },
        {
            "start_pos": 87,
            "end_pos": 87,
            "kinase_uniprot_canonical_ac": "",
            "kinase_gene_name": "",
            "residue": "Ser",
            "comment": "",
            "evidence": [
                {
                    "database": "phospho.ELM",
                    "id": "Q5GH67",
                    "url": "http://phospho.elm.eu.org/byAccession/Q5GH67.html"
                },
                {
                    "database": "iPTMnet",
                    "id": "Q5GH67",
                    "url": "http://research.bioinformatics.udel.edu/iptmnet/entry/Q5GH67"
                },
                {
                    "database": "PubMed",
                    "id": "17114649",
                    "url": "https://glygen.org/publication/PubMed/17114649"
                },
                {
                    "database": "PRO",
                    "id": "Q5GH67",
                    "url": "http://purl.obolibrary.org/obo/Q5GH67"
                }
            ],
            "site_lbl": "Ser87"
        }
    ],
    "glycation": [],
    "keywords": [],
    "publication": [
        {
            "title": "Qualitative and quantitative analyses of protein phosphorylation in naive and stimulated mouse synaptosomal preparations.",
            "journal": "Mol. Cell. Proteomics",
            "date": "2007",
            "authors": "Munton RP, Tweedie-Cullen R, Livingstone-Zatchej M, Weinandy F, Waidelich M, Longo D, Gehrig P, Potthast F, Rutishauser D, Gerrits B, Panse C, Schlapbach R, Mansuy IM",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "iPTMnet",
                    "id": "Q5GH67",
                    "url": "http://research.bioinformatics.udel.edu/iptmnet/entry/Q5GH67"
                }
            ],
            "reference": [
                {
                    "type": "PubMed",
                    "id": "17114649",
                    "url": "https://glygen.org/publication/PubMed/17114649"
                }
            ]
        },
        {
            "title": "A tissue-specific atlas of mouse protein phosphorylation and expression.",
            "journal": "Cell",
            "date": "2010",
            "authors": "Huttlin EL, Jedrychowski MP, Elias JE, Goswami T, Rad R, Beausoleil SA, Villen J, Haas W, Sowa ME, Gygi SP",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "iPTMnet",
                    "id": "Q5GH67",
                    "url": "http://research.bioinformatics.udel.edu/iptmnet/entry/Q5GH67"
                }
            ],
            "reference": [
                {
                    "type": "PubMed",
                    "id": "21183079",
                    "url": "https://glygen.org/publication/PubMed/21183079"
                }
            ]
        },
        {
            "title": "Exposure of phosphatidylserine by Xk-related protein family members during apoptosis.",
            "journal": "J. Biol. Chem.",
            "date": "2014",
            "authors": "Suzuki J, Imanishi E, Nagata S",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "RefSeq",
                    "id": "NP_001011874",
                    "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874"
                }
            ],
            "reference": [
                {
                    "type": "PubMed",
                    "id": "25231987",
                    "url": "https://glygen.org/publication/PubMed/25231987"
                }
            ]
        },
        {
            "title": "Caspase cleavage releases a nuclear protein fragment that stimulates phospholipid scrambling at the plasma membrane.",
            "journal": "Mol. Cell",
            "date": "2021",
            "authors": "Maruoka M, Zhang P, Mori H, Imanishi E, Packwood DM, Harada H, Kosako H, Suzuki J",
            "evidence": [
                {
                    "database": "UniProtKB",
                    "id": "Q5GH67",
                    "url": "https://www.uniprot.org/uniprot/Q5GH67"
                },
                {
                    "database": "RefSeq",
                    "id": "NP_001011874",
                    "url": "https://www.ncbi.nlm.nih.gov/protein/NP_001011874"
                }
            ],
            "reference": [
                {
                    "type": "PubMed",
                    "id": "33725486",
                    "url": "https://glygen.org/publication/PubMed/33725486"
                }
            ]
        }
    ],
    "pathway": [
        {
            "id": "mmu:497097",
            "name": "",
            "url": "https://www.genome.jp/dbget-bin/get_linkdb?-t+pathway+mmu:497097",
            "resource": "KEGG Pathway"
        }
    ],
    "orthologs": [
        {
            "uniprot_canonical_ac": "Q5GH59-1",
            "protein_name": "XK-related protein 4",
            "gene_name": "Xkr4",
            "tax_id": 10116,
            "organism": "Rattus norvegicus",
            "sequence": {
                "sequence": "MARPPPLLVQKPSFLVEACCSPSPATHLAPYHTQPGARTPSTIQRDLLFPIPRRCHARSSPRPPALGGGPTQRLQHAARSAHPIPPSVKEIHPTFSEIPRARASDCCAAALGVQHWPARHPHPPLPSISLAVDYYLLGQRWWFGLTLFFVVLGSLSVQVFSFRWFVHDFSTEDSATTTASTCQQPGADCKTVVSSGSAAGEGEARPSTPQRQASNASKSNIAATNSGSNSNGATRTSGKHRSASCSFCIWLLQSLIHILQLGQVWRYLHTIYLGIRSRQSGESSRWRFYWKMVYEYADVSMLHLLATFLESAPQLVLQLCIIVQTHSLQALQGFTAAASLVSLAWALASYQKALRDSRDDKKPISYMAVIIQFCWHFFTIAARVITFALFASVFQLYFGIFIVLHWCIMTFWIVHCETEFCITKWEEIVFDMVVGIIYIFSWFNVKEGRTRCRLFIYYFVILLENTALSALWYLYKAPQIADAFAIPALCVVFSSFLTGVVFMLMYYAFFHPNGPRFGQSPSCACDDPATAFSMPPEVATSTLRSISNNRSVASDRDQKFAERDGCVPVFQVRPTAPPTPSSRPPRIEESVIKIDLFRNRYPAWERHVLDRSLRKAILAFECSPSPPRLQYKDDALIQERLEYETTL",
                "length": 647
            },
            "evidence": [
                {
                    "id": "45236712",
                    "url": "http://www.informatics.jax.org/homology/45236712",
                    "database": "MGI"
                }
            ],
            "common_name": "Rat"
        },
        {
            "uniprot_canonical_ac": "Q5GH76-1",
            "protein_name": "XK-related protein 4",
            "gene_name": "XKR4",
            "tax_id": 9606,
            "organism": "Homo sapiens",
            "sequence": {
                "sequence": "MAAKSDGRLKMKKSSDVAFTPLQNSDHSGSVQGLAPGLPSGSGAEDEEAAGGGCCPDGGGCSRCCCCCAGSGGSAGSGGSGGVAGPGGGGAGSAALCLRLGREQRRYSLWDCLWILAAVAVYFADVGTDVWLAVDYYLRGQRWWFGLTLFFVVLGSLSVQVFSFRWFVHDFSTEDSATAAAASSCPQPGADCKTVVGGGSAAGEGEARPSTPQRQASNASKSNIAAANSGSNSSGATRASGKHRSASCSFCIWLLQSLIHILQLGQIWRYFHTIYLGIRSRQSGENDRWRFYWKMVYEYADVSMLHLLATFLESAPQLVLQLCIIVQTHSLQALQGFTAAASLVSLAWALASYQKALRDSRDDKKPISYMAVIIQFCWHFFTIAARVITFALFASVFQLYFGIFIVLHWCIMTFWIVHCETEFCITKWEEIVFDMVVGIIYIFSWFNVKEGRTRCRLFIYYFVILLENTALSALWYLYKAPQIADAFAIPALCVVFSSFLTGVVFMLMYYAFFHPNGPRFGQSPSCACEDPAAAFTLPPDVATSTLRSISNNRSVVSDRDQKFAERDGCVPVFQVRPTAPSTPSSRPPRIEESVIKIDLFRNRYPAWERHVLDRSLRKAILAFECSPSPPRLQYKDDALIQERLEYETTL",
                "length": 650
            },
            "evidence": [
                {
                    "id": "45236712",
                    "url": "http://www.informatics.jax.org/homology/45236712",
                    "database": "MGI"
                },
                {
                    "id": "Q5GH67",
                    "url": "https://omabrowser.org/oma/group/Q5GH67/",
                    "database": "OMA"
                }
            ],
            "common_name": "Human"
        }
    ],
    "go_annotation": {
        "categories": [
            {
                "name": "Cellular Component",
                "total": 1,
                "go_terms": [
                    {
                        "name": "plasma membrane",
                        "id": "GO:0005886",
                        "url": "https://www.ebi.ac.uk/QuickGO/term/GO:0005886",
                        "evidence": [
                            {
                                "database": "UniProtKB",
                                "id": "Q5GH67",
                                "url": "https://www.uniprot.org/uniprot/Q5GH67"
                            }
                        ],
                        "pmid": ""
                    }
                ]
            },
            {
                "name": "Molecular Function",
                "total": 2,
                "go_terms": [
                    {
                        "name": "protein homodimerization activity",
                        "id": "GO:0042803",
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                    },
                    {
                        "name": "phospholipid scramblase activity",
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                        ],
                        "pmid": ""
                    }
                ]
            },
            {
                "name": "Biological Process",
                "total": 3,
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                    {
                        "name": "engulfment of apoptotic cell",
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                        ],
                        "pmid": ""
                    },
                    {
                        "name": "phosphatidylserine exposure on apoptotic cell surface",
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                        "pmid": ""
                    },
                    {
                        "name": "apoptotic process involved in development",
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        {
            "start_pos": 215,
            "end_pos": 217,
            "annotation": "n_glycosylation_sequon"
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            "start_pos": 549,
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    "ptm_annotation": [
        {
            "annotation": "Undergoes proteolytic processing by caspase-3 (CASP3), caspase-6 (CASP6) and caspase-7 (CASP7) to generate the XK-related protein 4, processed form, leading to its activation.",
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        {
            "id": "38663",
            "name": "",
            "equation": "a 1,2-diacyl-sn-glycero-3-phospho-L-serine(in) = a 1,2-diacyl-sn-glycero-3-phospho-L-serine(out)",
            "summary": "",
            "cellular_location": "",
            "input_participant_list": [],
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        {
            "uniprot_ac": "O15162",
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                {
                    "ec_number": "3.1.-.-",
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        {
            "uniprot_ac": "P58195",
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                {
                    "ec_number": "3.1.-.-",
                    "activity": "",
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        {
            "uniprot_ac": "Q9JJ00",
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                    "ec_number": "3.1.-.-",
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                }
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    "biomarkers": [],
    "synthesized_glycans": [],
    "cluster_types": [
        {
            "name": "homologset.mgi",
            "label": "MGI Homologs"
        },
        {
            "name": "homologset.oma",
            "label": "OMA Homologs"
        }
    ],
    "section_stats": [
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        {
            "table_id": "phosphorylation",
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        {
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}