Glycogen synthases kinase 3 alpha (GSK3-a) is a multifunctional Serine/Threonine protein kinase, one of two isoforms of GSK3 (1). Originally identified as a regulator of glycogen synthase, it has been shown to be involved in the hormonal control of several regulatory factors and transcription factors. GSK3-a activity is down regulated by phosphorylation on Serine 21 by PKB, or activated by phosphorylation on Tyrosine 279 (2). Insulin inactivates GSK3-a by rapid phosphorylation which leads to activation of Glycogen Synthase in the cells (3). GSK3-a activitiy has been linked to a pathogenic mechanism in Alzheimer's disease (4). GSK3 beta) plays a key role in insulin and Wnt signaling, phosphorylating downstream targets by default, and becoming inhibited following the extracellular signaling event (5).
Applications:
Suitable for use in Western Blot, Immunoprecipitation, Immunohistochemistry and Immunocytochemistry. Other applications not tested.
Recommended Dilutions:
Western Blot: 1:500-1:2000
Immunoprecipitation: 1:40
Immunohistochemistry: 1:100
Immunocytochemistry: 1:250
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.