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- Table of Contents
Facts about Phosphatidylinositol 4-phosphate 3-kinase C2 domain-containing subunit alpha.
Functions in insulin signaling and secretion. Required for translocation of the glucose transporter SLC2A4/GLUT4 into the plasma membrane and glucose uptake in response to insulin- mediated RHOQ activation.
Human | |
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Gene Name: | PIK3C2A |
Uniprot: | O00443 |
Entrez: | 5286 |
Belongs to: |
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PI3/PI4-kinase family |
C2-containing phosphatidylinositol kinase; CPK; DKFZp686L193; EC 2.7.1; EC 2.7.1.154; MGC142218; phosphatidylinositol-4-phosphate 3-kinase C2 domain-containing subunit alpha; Phosphoinositide 3-kinase-C2-alpha; phosphoinositide-3-kinase, class 2, alpha polypeptide; PI3-K-C2(ALPHA); PI3-K-C2A; PI3K-C2alpha; PI3K-C2-alpha; PtdIns-3-kinase C2 subunit alpha
Mass (kDA):
190.68 kDA
Human | |
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Location: | 11p15.1 |
Sequence: | 11; NC_000011.10 (17086575..17207986, complement) |
Expressed in columnar and transitional epithelia, mononuclear cells, smooth muscle cells, and endothelial cells lining capillaries and small venules (at protein level). Ubiquitously expressed, with highest levels in heart, placenta and ovary, and lowest levels in the kidney. Detected at low levels in islets of Langerhans from type 2 diabetes mellitus individuals.
Cell membrane. Golgi apparatus. Cytoplasmic vesicle, clathrin-coated vesicle. Nucleus. Cytoplasm. Inserts preferentially into membranes containing PtdIns(4,5)P2 (PubMed:17038310). Associated with RNA-containing structures (PubMed:11606566).
PMID: 9337861 by Domin J., et al. Cloning of a human phosphoinositide 3-kinase with a C2 domain which displays reduced sensitivity to the inhibitor wortmannin.
PMID: 10766823 by Domin J., et al. The class II phosphoinositide 3-kinase PI3K-C2alpha is concentrated in the trans-Golgi network and present in clathrin-coated vesicles.