Apolipoprotein C-II or apolipoprotein C2 is a protein that in humans is encoded by the APOC2 gene.
| APOC2 |
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| Available structures |
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| PDB | Ortholog search: PDBe RCSB |
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| List of PDB id codes |
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1SOH, 1BY6, 1I5J, 1O8T |
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| Identifiers |
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| Aliases | APOC2, APO-CII, APOC-II, apolipoprotein C2 |
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| External IDs | OMIM: 608083 MGI: 88054 HomoloGene: 47928 GeneCards: APOC2 |
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| Gene location (Human) |
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 | | Chr. | Chromosome 19 (human)[1] |
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| | Band | 19q13.32 | Start | 44,945,971 bp[1] |
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| End | 44,949,566 bp[1] |
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| Gene location (Mouse) |
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 | | Chr. | Chromosome 7 (mouse)[2] |
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| | Band | 7 A3|7 9.94 cM | Start | 19,671,579 bp[2] |
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| End | 19,677,941 bp[2] |
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| Gene ontology |
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| Molecular function | • lipase inhibitor activity • phospholipase binding • protein homodimerization activity • lipoprotein lipase activator activity • phospholipase activator activity • GO:0010577 enzyme activator activity • lipid binding
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| Cellular component | • chylomicron • very-low-density lipoprotein particle • spherical high-density lipoprotein particle • extracellular region • early endosome • low-density lipoprotein particle • high-density lipoprotein particle • intermediate-density lipoprotein particle • extracellular
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| Biological process | • high-density lipoprotein particle clearance • lipid transport • positive regulation of triglyceride catabolic process • chylomicron remnant clearance • lipid metabolism • phospholipid efflux • positive regulation of lipoprotein lipase activity • positive regulation of fatty acid biosynthetic process • negative regulation of very-low-density lipoprotein particle clearance • retinoid metabolic process • negative regulation of receptor-mediated endocytosis • lipid catabolic process • positive regulation of phospholipase activity • positive regulation of phospholipid catabolic process • cholesterol efflux • very-low-density lipoprotein particle remodeling • negative regulation of cholesterol transport • cholesterol homeostasis • positive regulation of very-low-density lipoprotein particle remodeling • triglyceride-rich lipoprotein particle remodeling • triglyceride homeostasis • negative regulation of lipid metabolic process • reverse cholesterol transport • GO:0048553 negative regulation of catalytic activity • response to drug • lipoprotein transport • chylomicron remodeling • high-density lipoprotein particle remodeling • chylomicron assembly • GO:0048554 positive regulation of catalytic activity
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| Sources:Amigo / QuickGO |
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| Orthologs |
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| Species | Human | Mouse |
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| Entrez | | |
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| Ensembl | | |
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| UniProt | | |
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| RefSeq (mRNA) | | |
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| RefSeq (protein) | | |
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NP_001296728 NP_001264873 NP_001296724 |
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| Location (UCSC) | Chr 19: 44.95 – 44.95 Mb | Chr 7: 19.67 – 19.68 Mb |
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| PubMed search | [3] | [4] |
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| Wikidata |
| View/Edit Human | View/Edit Mouse |
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| Apo-CII |
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 nmr structure of human apolipoprotein c-ii in the presence of sds |
| Identifiers |
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| Symbol | Apo-CII |
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| Pfam | PF05355 |
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| InterPro | IPR008019 |
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| SCOP2 | 1by6 / SCOPe / SUPFAM |
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| Available protein structures: |
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| Pfam | structures / ECOD |
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| PDB | RCSB PDB; PDBe; PDBj |
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| PDBsum | structure summary |
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The protein encoded by this gene is secreted in plasma where it is a component of very low density lipoproteins and chylomicrons. This protein activates the enzyme lipoprotein lipase in capillaries,[5] which hydrolyzes triglycerides and thus provides free fatty acids for cells. Mutations in this gene cause hyperlipoproteinemia type IB, characterized by xanthomas, pancreatitis, and hepatosplenomegaly, but no increased risk for atherosclerosis. Lab tests will show elevated blood levels of triglycerides, cholesterol, and chylomicrons[6]