Product Pathways - PI3K / Akt Signaling
Phospho-GSK-3α (Ser21) (36E9) Rabbit mAb #9316
|W IHC-P||H M R Mk||Endogenous||51||Rabbit IgG|
Reactivity Key: H=Human M=Mouse R=Rat Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Specificity / Sensitivity
Phospho-GSK-3α (Ser21) (36E9) Rabbit mAb detects endogenous levels of GSK-3α when phosphorylated at Ser21 and does not detect GSK-3β when phosphorylated at Ser9.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues around Ser21 of human GSK-3α.
Western blot analysis of extracts from COS-7 cells, λ-phosphatase or PDGF-treated, using Phospho-GSK-3α (Ser21) (36E9) Rabbit mAb (upper) or GSK-3α Antibody #9338 (lower).
Immunohistochemical analysis of paraffin-embedded human breast carcinoma , untreated (left) or lambda phosphatase treated (right), using Phospho-GSK-3alpha (Ser 21) (36E9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded LNCaP cells, untreated (left) or LY294002-treated (right), using Phospho-GSK-3alpha (Ser 21) (36E9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Phospho-GSK-3α (Ser21) (36E9) Rabbit mAb in the presence of control peptide (left) or Phospho-GSK-3α (Ser21) (36E9) Blocking Peptide #1027 (right).
Glycogen synthase kinase-3 (GSK-3) was initially identified as an enzyme that regulates glycogen synthesis in response to insulin (1). GSK-3 is a ubiquitously expressed serine/threonine protein kinase that phosphorylates and inactivates glycogen synthase. GSK-3 is a critical downstream element of the PI3K/Akt cell survival pathway whose activity can be inhibited by Akt-mediated phosphorylation at Ser21 of GSK-3α and Ser9 of GSK-3β (2,3). GSK-3 has been implicated in the regulation of cell fate in Dictyostelium and is a component of the Wnt signaling pathway required for Drosophila, Xenopus, and mammalian development (4). GSK-3 has been shown to regulate cyclin D1 proteolysis and subcellular localization (5).
- Welsh, G.I. et al. (1996) Trends Cell. Biol. 6, 274-279.
- Srivastava, A.K. and Pandey, S.K. (1998) Mol. Cell. Biochem. 182, 135-141.
- Cross, D.A. et al. (1995) Nature 378, 785-789.
- Nusse, R. (1997) Cell 89, 321-323.
- Diehl, J.A. et al. (1998) Genes Dev. 12, 3499-3511.
- Allard, D. et al. (2008) J Biol Chem 283, 19739-47. Applications: IHC-P (paraffin)
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Rabbit Monoclonals Produced Using Epitomics® Technology, U.S. Patent No. 5,675,063.
For Research Use Only. Not For Use In Diagnostic Procedures.