Applications Key: W=Western Blotting Reactivity Key: H=Human M=Mouse R=Rat Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
IRS-2 Antibody detects endogenous levels of total IRS-2 protein. It does not cross-react with IRS-1.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the sequence of human IRS-2. Antibodies are purified by protein A and peptide affinity chromatography.
Western Blotting
Western blot analysis of extracts from CHO IR/4PS cells (transfected with insulin receptor and IRS-2) or CHO IR/IRS-1 cells (transfected with insulin receptor and IRS-1), showing no change in total protein levels with insulin stimulation (100 nM for 5 min), using IRS-2 Antibody (top) or IRS-1 Antibody #2382 (bottom).
Background
Insulin Receptor Substrate 2 (IRS-2) is one of the major substrates of the insulin receptor kinase (1). In vertebrates, IRS-2 functions as a scaffolding protein to coordinate separate branches of the Insulin/IGF-signaling cascades (2). IRS-2 is essential for normal nutrient homeostasis because it mediates both peripheral insulin action and the effect of IGF-1 on B-cell growth. Mice lacking IRS-2 fail to maintain sufficient compensatory insulin secretion and develop diabetes as young adults (3).