• Product name

    Anti-GSK3 (alpha + beta) (phospho Y216 + Y279) antibody [M132]
    See all GSK3 (alpha + beta) primary antibodies
  • Description

    Mouse monoclonal [M132] to GSK3 (alpha + beta) (phospho Y216 + Y279)
  • Host species

  • Specificity

    This antibody detects 46/50 kDa proteins corresponding to the apparent molecular mass of GSK-3ß and GSK-3a
  • Tested applications

    Suitable for: WB, ELISAmore details
  • Species reactivity

    Reacts with: Cow, Human
    Predicted to work with: Mouse, Rat
  • Immunogen

    A phospho-GSK-3ß (Tyr-216) synthetic peptide (coupled to KLH) corresponding to amino acid residues around tyrosine 216 of human GSK-3ß.

  • Positive control

    • Pervanadate treated rabbit fibroblasts and treated human SKN-SH and A431 cells.



Our Abpromise guarantee covers the use of ab45383 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/1000. Predicted molecular weight: 52 kDa.
ELISA 1/2000.


  • Relevance

    Glycogen synthase kinase 3 (GSK3) is a proline directed serine threonine kinase that was initially identified as a phosphorylating and inactivating glycogen synthase, a key enzyme in glycogen metabolism. Since then, it has been shown to be involved in the regulation of a diverse array of cellular functions, including protein synthesis, cell proliferation, cell differentiation, microtubule assembly/disassembly, and apoptosis. GSK3s substrate specificity is unique in that phosphorylation of substrate only occurs if a phosphoserine or phosphotyrosine is present four residues C terminal to the site of GSK phosphorylation. There exists two isoforms of GSK3, alpha and beta, and they show a high degree of amino acid homology. The two isoforms of GSK3 are strictly regulated via phosphorylation. Phosphorylation of GSK3 beta on Ser9 (Ser21 in GSK3 alpha) by protein kinase B (PKB) causes its inactivation is the primary mechanism responsible for growth factor inhibition of this kinase. Activation of GSK3 beta is dependent upon the phosphorylation of Tyr216 (Tyr279 in GSK3 alpha). Upon activation, it has been shown to phosphorylate a number of different cellular proteins, including p53, c-Myc, c-Jun, heat shock factor 1 (HSF1), and cyclin D1. GSK3 beta also has been shown to phosphorylate aberrant sites on the microtubule associated protein tau, which is critical for the progression of Alzheimer's disease. GSK3B is involved in energy metabolism, neuronal cell development, and body pattern formation.
  • Cellular localization

    Cytoplasmic and Nuclear
  • Database links

  • Alternative names

    • Factor A antibody
    • Glycogen synthase kinase 3 alpha antibody
    • Glycogen synthase kinase 3 beta antibody
    • GSK3 alpha antibody
    • GSK3 beta antibody
    • GSK3B antibody
    see all


  • Lanes 1-2 : anti-GSK-3ß
    Lanes 3-4 : Anti-GSK3 (alpha + beta) (phospho Y216 + Y279) antibody [M132] (ab45383) at 1/1000 dilution

    Lanes 1 & 3 : rabbit spleen fibroblasts serum starved for 2 hrs
    Lanes 2 & 4 : rabbit spleen fibroblasts treated with pervanadate (1 mM) for 30 minutes

    Predicted band size: 52 kDa
    Observed band size: 46,50 kDa
    why is the actual band size different from the predicted?


This product has been referenced in:

  • Puri P  et al. Proteomic Analysis of Bovine Sperm YWHA Binding Partners Identify Proteins Involved in Signaling and Metabolism. Biol Reprod : (2008). WB ; Cow . Read more (PubMed: 18753613) »
See 1 Publication for this product

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab45383.
Please use the links above to contact us or submit feedback about this product.

For licensing inquiries, please contact partnerships@abcam.com

Sign up