Cell Signaling Technology

Product Pathways - Metabolism

IRS-2 Antibody #4502

Applications Reactivity Sensitivity MW (kDa) Source
W H M R Endogenous 185 Rabbit

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.

Protocols

Specificity / Sensitivity

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 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).

  1. Sun, X.J. et al. (1991) Nature 352, 73-77.
  2. White, M.F. (2002) Am. J. Physiol. Endocrinol. Metab. 283, E413-E422.
  3. Withers, D.J. et al. (1998) Nature 391, 900-904.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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