Insulin Receptor Substrate (IRS-1) is one of the major substrates of Insulin Receptor Kinase.
IRS-1 contains multiple tyrosine phosphorylation motifs that serve as docking sites for SH2 domain-containing proteins (Grb2, p85, SHP-2, Fyn and others) and which mediate the metabolic and growth promoting functions of insulin.
IRS-1 also contains over 30 potential Ser/Thr phosphorylation sites for kinases, such as PKA, PKC and MAPK.
The phosphorylation of Ser 612 and Ser636/639 are mediated by PKA and mTOR pathways, respectively, resulting in an inhibition of insulin signaling in the cell and suggesting a potential mechanism for insulin resistance in some models of obesity.
Once phosphorylated by insulin receptor, IRS-1 recruits the downstream components that mediate the insulin signaling.
IRS-1 protein contains a conserved pleckstrin homology (PH) domain located at its amino terminus, adjacent to a phospho-tyrosine binding (PTB) domain.
Applications:Suitable for use in ELISA, Western Blot and Immunoprecipitation.
Other applications not tested.
Recommended Dilutions:Western Blot: 1:1000Immunoprecipitation: 1:50Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
Aliquots are stable for 12 months after receipt.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size:100ul
Host:rabbit
Source Antibody:human
Grade:Affinity Purified
Purity:Purified by Protein A and peptide affinity chromatography.
Form:Supplied as a liquid in 10mM HEPES, pH 7.5, 150mM sodium chloride, 0.1mg/ml BSA, 50% glycerol. No preservative added.
Specificity:Recognizes endogenous levels of human IRS-1 at ~180kD. Detects IRS-1 from various cell lines. It does not crossreact with IRS-2,-3 or -4. Species Crossreactivity: mouse and rat.
Isotype:IgG
Calc Applications Abbrev:E IP WB
Calc Crossreactivity:Hu Mo Rt
Immunogen:Synthetic peptide corresponding to the C-terminal sequence of human IRS-1.