AKT, also known as Protein Kinase B (PKB) and Rac (Related to the A and C kinases), is a 60kDa serine/threonine kinase critical for controlling diverse cellular functions, including glucose metabolism, gene transcription, cell proliferation, and apoptosis. AKT phosphorylates a number of physiological substrates including MBP, glycogen synthetase, PKA RII subunit, and histone H1. AKT is activated in response to insulin and growth factors in a PI3-kinase dependent manner. Activation of PI3-Kinase generates phosphatidylinositol 3,4-bisphosphate which may induce the membrane translocation of AKT coincident with its phosphorylation and activation. Upon activation, AKT associates with members of the PKC family of kinases, such as PKC