Glycogen Synthase Kinase 3 Alpha, Beta (GSK3A) Antibody – Mouse Monoclonal

Glycogen synthase kinase 3-alpha (GSK3A; EC {2.7.1.37}) is a multifunctional protein serine kinase, homologous to Drosophila 'shaggy' (zeste-white3) and implicated in the control of several regulatory proteins including glycogen synthase (see GYS1, {138570}) and transcription factors (e.g., JUN, {165160}). It also plays a role in the WNT ({164820}) and PI3K (see PIK3CG, {601232}) signaling pathways (see review by {1:Ali et al. (2001)}).[supplied by OMIM]

GSK3A: a proline-directed protein kinase of the GSK family. Implicated in the control of several regulatory proteins including glycogen synthase, Myb, and c-Jun. GSK3 and GSK3 have similar functions. GSK3 phophorylates tau, the principal component of neurofibrillary tangles in Alzheimer disease and is required for maximal production of amyloid plaque peptides by secretase. A GSK3 promoter SNP effects progression of bipolar disorder. The GSK3 inhibitor, lithium, is used to treat bipolar disorder and is seen to block plaque formation. GSK3 generally opposes the action of insulin, and GSK3 hyperactivity is thought to contribute to insulin resistant (type II) diabetes. GSK3 also negatively regulates cardiac hypertrophy. A tumor suppressor role is indicated by the oncogenic potential of stabilized -catenin mutants that lack GSK3 phosphorylation sites. Inhibitor: AR-A014418

Protein type: Protein kinase, CMGC; Kinase, protein; Protein kinase, Ser/Thr (non-receptor); EC 2.7.11.1; EC 2.7.11.26; CMGC group; GSK family; GSK subfamily

Chromosomal Location of Human Ortholog: 19q13.2

Cellular Component: beta-catenin destruction complex; cytosol

Molecular Function: protein serine/threonine kinase activity; protein binding; tau-protein kinase activity; ATP binding

Biological Process: glycogen metabolic process; proteasomal ubiquitin-dependent protein catabolic process; genetic imprinting; nerve growth factor receptor signaling pathway; negative regulation of insulin receptor signaling pathway; protein amino acid phosphorylation; negative regulation of transferase activity; positive regulation of cAMP biosynthetic process; negative regulation of glycogen biosynthetic process; epidermal growth factor receptor signaling pathway; nervous system development; negative regulation of TOR signaling pathway; cell migration; Wnt receptor signaling pathway; phosphoinositide-mediated signaling; fibroblast growth factor receptor signaling pathway; unfolded protein response; positive regulation of peptidyl-serine phosphorylation; negative regulation of glucose import; unfolded protein response, activation of signaling protein activity; cellular protein metabolic process; cellular response to insulin stimulus; insulin receptor signaling pathway; positive regulation of protein catabolic process; regulation of systemic arterial blood pressure; innate immune response; positive regulation of transcription from RNA polymerase II promoter; positive regulation of heart contraction