Cell Signaling Technology

Product Pathways - Metabolism

IRAP Antibody #3808

Applications Reactivity Sensitivity MW (kDa) Source
W IP IF-IC H M (R) Endogenous 165 Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IF-IC=Immunofluorescence (Immunocytochemistry)
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

IRAP Antibody detects endogenous levels of total IRAP protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the sequence of human IRAP protein. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from C2C12 cells using IRAP Antibody.

IF-IC

IF-IC

Confocal immunofluorescent analysis of differentiated 3T3-L1 cells using IRAP Antibody (red). Lipid droplets have been labeled with BODIPY 493/503 (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).

Background

IRAP (also known as LNPEP) was originally described as an insulin-responsive aminopeptidase found in Glut4-containing vesicles (1). It is essentially always in the same compartments as Glut4 and has identical insulin-stimulated translocation patterns as Glut4 (2). IRAP is therefore considered to be a surrogate marker for Glut4 (2). IRAP was later found to be a critical enzyme that regulates the expression and activity of several essential hormones and regulatory proteins, including the Glut4 transporter (3,4). This membrane associated, zinc-dependent cystinyl aminopeptidase acts as both a receptor for angiotensin IV as well as the enzyme that catalyzes the synthesis of this essential hormone from its angiotensinogen precursor (5). IRAP catalyzes the hydrolysis of several peptide hormones, including oxytocin and vasopressin (4). Abnormal IRAP expression or activity is associated with several forms of cancer in humans, including renal and endometrial cancers (6,7).

  1. Garza, L.A. and Birnbaum, M.J. (2000) J Biol Chem 275, 2560-7.
  2. Gross, D.N. et al. (2004) Mol Cell Biol 24, 7151-62.
  3. Albiston, A.L. et al. (2001) J Biol Chem 276, 48623-6.
  4. Keller, S.R. (2003) Front Biosci 8, s410-20.
  5. Vanderheyden, P.M. (2009) Mol Cell Endocrinol 302, 159-66.
  6. Larrinaga, G. et al. (2007) Regul Pept 144, 56-61.
  7. Suzuki, Y. et al. (2003) Clin Cancer Res 9, 1528-34.

Application References

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Companion Products

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

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