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Official Full Name: phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 alpha<br />Also known as: CPK; OCSKD; PI3-K-C2A; PI3K-C2alpha; PI3K-C2-alpha; PI3-K-C2(ALPHA)<br />The protein encoded by this gene belongs to the phosphoinosine 3-kinase (PI3K) family. PI3 kinase plays a role in signaling pathways of cell proliferation, oncogenic transformation, cell survival, cell migration and intracellular protein transport. The protein contains a lipid kinase catalytic domain and a C-terminal C2 domain, a feature of class II PI3 kinases. The C2 domain acts as a calcium-dependent phospholipid-binding motif that mediates protein translocation to membranes and possibly protein-protein interactions. The PI3 kinase activity of this protein is insensitive to nanomolar levels of the inhibitor wortmanin. This protein has been shown to be activated by insulin and may be involved in integrin-dependent signaling.