Description_x000D_ General description_x000D_ Insulin receptor substrate 1 (IRS1) gene is mapped to human chromosome 2q36.3. The gene encodes a 185 kDa protein and is ubiquitously expressed. Irs1 belongs to the group of cytoplasmic adaptor proteins._x000D_ Immunogen_x000D_ C-terminal 14 amino acid residues of rat liver insulin receptor substrate 1._x000D_ Application_x000D_ Anti-Insulin Receptor Substrate 1 (IRS-1) antibody can be used in immunoprecipitation using 0.5 mg of a 3T3/A31 RIPA lysate._x000D_ Physical form_x000D_ Solution in 0.1 M Tris-glycine, pH 7.4, containing 0.15 M NaCl, and 0.05% sodium azide._x000D_ Disclaimer_x000D_ Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals._x000D_ Biochem/physiol Actions_x000D_ Insulin receptor substrate 1 (IRS-1) is phosphorylated on multiple tyrosine residues. It plays a crucial role in transmitting signals from the insulin and insulin-like growth factor-1 (IGF-1) receptors to intracellular pathways. Over expression of IRS-1can leads to mammary tumorigenesis and metastasis. Anti-Insulin Receptor Substrate 1 (IRS-1) antibody can be used in western blotting using RIPA lysates of 3T3/A31 mouse fibroblasts. Rabbit anti-Insulin Receptor Substrate 1 (IRS-1) antibody reacts specifically with insulin receptor substrate 1 (165 kD). The product has shown species cross reactivity with rat, mouse and human IRS-1.