Catalog # GL7521

GSK-3β Recombinant Protein


Application / Dilution
WB10 μl/lane

Size 100 μl



Two GSK-3 genes (α and β) have been cloned in mammals and these kinase homologues show strong sequence conservation within their catalytic domain. GSK-3β plays a critical role in cell survival by phosphorylating nuclear factor-κB (NF-κB) p65 subunit, leading to NF-κB transactivation in hepatocytes. Phosphorylation regulates the activity of both GSK-3 genes. MEK1/2 can phosphorylate tyrosine 216 (tyrosine 279 in GSK-3α), which stimulates GSK-3 kinase activity. Tyr-216 phosphorylation is required for GSK-mediated down-regulation of β-catenin activity. Also, TRAIL stimulation can increase Tyr-216 phosphorylation, and GSK-3β activity may suppress TRAIL-induced apoptosis. Inactiviation of GSK-3 occurs through Akt phosphorylation of serine 9 of GSK-3β (Serine 21 in GSK-3α). This phosphorylation may be involved in later phases of neuronal apoptosis.

Human recombinant GSK-3β protein is a 20 kDa fragment that includes amino acids 2 to 159. This GSK-3β protein fragment is detected by mouse monoclonal anti-GSK-3β (N-terminal region).

Western blot analysis of a human recombinant GSK3β N-terminal fragment (lanes 1 & 2) and endogenous GSK3β expressed in mouse brain (lanes 3 & 4). The blot was probed with mouse monoclonal anti-GSK-3β at 1:500 (lanes 1 & 3) and 1:2000 (lanes 2 & 4).

GSK-3β recombinant protein lysate is supplied at a concentration of 10 ng/µl in electrophoresis sample buffer (62.5 mM Tris pH 6.8, 2% SDS, 5% glycerol, 0.003% bromophenol blue, 0.9% β-mercaptoethanol). Store at –20°C. Do not boil or dilute. Stable for 1 year.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: