Rabbit polyclonal to IRS2 ( phospho S731 )The insulin receptor mediates insulin action through the phosphorylation of substrate proteins. The major substrates of the insulin receptor kinase are the insulin receptor substrate (IRS) family of proteins, IRS 1, IRS 2, IRS 3, and IRS 4. IRS 2, a cytoplasmic signaling molecule that mediates effects of insulin, Insulin-like growth factor 1 and other cytokines by acting as a molecular adaptor between diverse receptor kinases and downstream effectors. IRS proteins contain more than 70 potential Ser / Thr phosphorylation sites for kinases like PKA (cAMP-dependent protein kinase), PKC, and MAPK. The phosphorylation of Ser / Thr residues of IRS proteins has a dual function, serving either for a positive or negative modulation of insulin signal transduction.
Immunogen
Synthetic peptide (YKASpSPAESS)corresponding to amino acids 727-736 of human IRS 2 atthe phosphorylated site of Serine 731. This syntheticpeptide also correlates to amino acids 129-138 of mouseIRS 2 at the phosphorylation sites of Serine 133 and toamino a
Modification
p-Ser731
Key Feature
Clonality
Polyclonal
Isotype
IgG
Host Species
Rabbit
Tested Applications
ELISAIPWB
Immunoprecipitation: use at a concentration of 3.0 - 5.0 μg / extract from 10^7 cells. Western Blotting: use at a concentration of 0.5 - 2.0 μg/ml. ELISA: use at a concentration of 0.1 - 1.0 μg/ml. Optimal dilutions / concentrations should be determined by the end user. By Western blot, this antibody detects a band of approximately 200 kDa in cell lysate derived from mouse serum-treated fibroblasts, which corresponds to the predicted molecular weight of phospho IRS 2. Samples wereboiled prior to subject 7.5% SDS-polyacrylamide gelelectrophoresis.:
This antibody isspecific for human IRS 2 phosphorylated at the position ofSerine 731. The antibodies were evaluated for specificitywith a dot blot assay using synthetically prepared IRSpeptides. It only recognizes the phosphorylated serine 731,not other phosphorylated sites or non-phosphorylated IRS 1 or IRS 2.
Cellular Localization
Cytoplasmic
Application
Application
IP: 3T3 cell lysate immunoprecipitated with Anti-IRS-2 (pSER731)
Application Notes
Immunoprecipitation: use at a concentration of 3.0 - 5.0 μg / extract from 10^7 cells. Western Blotting: use at a concentration of 0.5 - 2.0 μg/ml. ELISA: use at a concentration of 0.1 - 1.0 μg/ml. Optimal dilutions / concentrations should be determined by the end user. By Western blot, this antibody detects a band of approximately 200 kDa in cell lysate derived from mouse serum-treated fibroblasts, which corresponds to the predicted molecular weight of phospho IRS 2. Samples wereboiled prior to subject 7.5% SDS-polyacrylamide gelelectrophoresis.:
Additional Information
Form
Liquid
Storage Instructions
Keep as concentrated solution. Store at 4ºC short term. For extended storage aliquot and store at -20ºC or below. Avoid freeze-thaw cycles.