GSK3 alpha Kinase Enzyme System
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Recombinant full-length human GSK3 alpha was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag. GSK3 alpha is a multifunctional protein serine kinase, homologous to Drosophila 'shaggy' (zeste-white3) and implicated in the control of several regulatory proteins including glycogen synthase and transcription factors (e.g., JUN). GSK3 alpha also plays a role in the WNT and PI3K signaling pathways. Alzheimer disease is associated with increased production and aggregation of amyloid-beta-40 and -42 peptides into plaques. GSK3 alpha is required for maximal production of the beta-amyloid-40 and -42 peptides generated from the amyloid precursor protein by presenilin-dependent gamma-secretase cleavage. In vitro, lithium, a GSK3 alpha inhibitor, blocks the production of the beta-amyloid peptides by interfering with the gamma-secretase step. ADP-Glo Kinase Assay is a luminescent kinase assay that measures ADP formed from a kinase reaction; ADP is converted into ATP, which is a substrate in a reaction catalyzed by Ultra-Glo Luciferase that produces light. The luminescent signal positively correlates with ADP amount and kinase activity. The assay is well suited for measuring the effects chemical compounds have on the activity of a broad range of purified kinases, making it ideal for both primary screening as well as kinase selectivity profiling. The ADP-Glo Kinase Assay can be used to monitor the activity of virtually any ADP-generating enzyme (e.g., kinase or ATPase) using up to 1mM ATP. Kinase Enzyme System contains: Kinase: GSK3 alpha, 10ug (Human, recombinant full-length). MW: ~81kDa. Substrate: GSK3 Substrate (YRRAAVPPSPSLSRHSSPHQ(pS)EDEEE); derived from human muscle glycogen synthase 1 (amino acid 636-661). Other: Reaction Buffer, DTT. GSK3 alpha NCBI Database Entry: www.ncbi.nlm.nih.gov/gene/2931/. Visit www.promega.com/kinase/ to see all Kinase Enzyme Systems.
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