Thermo Fisher Scientific Phospho-IRS1 (Tyr941) Polyclonal Antibody

Applications

Western Blot (WB)

• Tested Dilution: 1:1,000
• View 1 publication

Product Specifications

Target Information

IRS-1, a major substrate of the insulin receptor, is phosphorylated in response to stimulation of cells by insulin, insulin-like growth factor 1 (IGF-1), and interleukin 4 (IL-4). IRS-1 is phosphorylated on serine, threonine, and tyrosine residues in various tissues.
An insulin-sensitive serine/threonine kinase, casein kinase II, mediates a portion of the insulin-stimulated serine/threonine phosphorylation of overexpressed IRS-1 in vivo. Thr 502 is identified as the major casein kinase II-catalyzed phosphorylation site in rat IRS-1, and Ser 99 is an additional phosphorylation site catalyzed by casein kinase II.
Thus, casein kinase II-catalyzed phosphorylation of IRS-1 may be a component of the intracellular insulin signaling cascade. IRS-1 contains three putative binding sites for 14-3-3 (Ser 270, Ser 374, and Ser 641), and the motif around Ser 270 is located in the phosphotyrosine binding domain of IRS-1, which is responsible for the interaction with the insulin receptor.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.