Akt1: an oncogenic AGC kinase that plays a critical role in regulating cell survival and metabolism in many different signaling pathways. Dual phosphorylation is required for its activation. T308 is phosphorylated by PDK1 in the PI3 kinase pathway, and S473 is phosphorylated by mTOR in the mTORC2 pathway. The 'Lys-63'-linked ubiquitination of AKT1 by TRAF6 is important for its translocation to the plasma membrane, phosphorylation, and activation. When Akt is fully phosphorylated it translocates into the nucleus, undergoes 'Lys-48'-polyubiquitination catalyzed by TTC3, leading to its proteosomal degradation. Hyperactive or overexpressed in a number of cancers including breast, prostate, lung, pancreatic, liver, ovarian and colorectal. Over 160 protein substrates are known including many that regulate transcription, metabolism, apoptosis, cell cycle, and growth.
Protein type: Oncoprotein; EC 2.7.11.1; Protein kinase, AGC; Kinase, protein; Protein kinase, Ser/Thr (non-receptor); AGC group; AKT family
Chromosomal Location of Human Ortholog: 14q32.32
Cellular Component: microtubule cytoskeleton; nucleoplasm; mitochondrion; cytoplasm; plasma membrane; spindle; intercellular junction; nucleus; cytosol
Molecular Function: protein serine/threonine kinase activity; identical protein binding; protein binding; phosphatidylinositol-3,4,5-triphosphate binding; enzyme binding; protein kinase C binding; nitric-oxide synthase regulator activity; protein serine/threonine/tyrosine kinase activity; kinase activity; phosphatidylinositol-3,4-bisphosphate binding; ATP binding; protein kinase activity
Biological Process: negative regulation of JNK cascade; regulation of myelination; positive regulation of nitric oxide biosynthetic process; nerve growth factor receptor signaling pathway; protein ubiquitination; glucose homeostasis; G1/S-specific positive regulation of cyclin-dependent protein kinase activity; regulation of cell migration; protein amino acid phosphorylation; germ cell development; positive regulation of glucose import; cell projection organization and biogenesis; protein catabolic process; maternal placenta development; response to food; platelet activation; glycogen biosynthetic process; fibroblast growth factor receptor signaling pathway; positive regulation of nitric-oxide synthase activity; positive regulation of blood vessel endothelial cell migration; glucose metabolic process; positive regulation of lipid biosynthetic process; positive regulation of cell growth; cellular response to insulin stimulus; insulin-like growth factor receptor signaling pathway; response to heat; T cell costimulation; striated muscle cell differentiation; positive regulation of fat cell differentiation; negative regulation of protein kinase activity; positive regulation of endothelial cell proliferation; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; response to oxidative stress; regulation of nitric-oxide synthase activity; negative regulation of apoptosis; negative regulation of autophagy; negative regulation of fatty acid beta-oxidation; translation; apoptosis; protein amino acid autophosphorylation; positive regulation of glycogen biosynthetic process; positive regulation of cellular protein metabolic process; regulation of glycogen biosynthetic process; negative regulation of cell size; negative regulation of caspase activity; glucose transport; signal transduction; nitric oxide metabolic process; regulation of translation; apoptotic mitochondrial changes; protein kinase B signaling cascade; nitric oxide biosynthetic process; inflammatory response; cell differentiation; activated T cell apoptosis; aging; epidermal growth factor receptor signaling pathway; negative regulation of proteolysis; phosphoinositide-mediated signaling; myelin maintenance in the peripheral nervous system; protein modification process; positive regulation of peptidyl-serine phosphorylation; endocrine pancreas development; osteoblast differentiation; cell proliferation; G-protein coupled receptor protein signaling pathway; peptidyl-serine phosphorylation; protein import into nucleus, translocation; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; insulin receptor signaling pathway; positive regulation of vasoconstriction; innate immune response; gene expression; positive regulation of protein amino acid phosphorylation; vascular endothelial growth factor receptor signaling pathway; blood coagulation; phosphorylation; hyaluronan metabolic process
Disease: Schizophrenia; Cowden Syndrome 6; Proteus Syndrome; Breast Cancer; Ovarian Cancer
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