Cell Signaling Technology

Product Pathways - NF-kB Signaling

IRAK1 Antibody (Human Specific) #4359

Applications Reactivity Sensitivity MW (kDa) Source
W IF-IC H Mk Endogenous 78, 105 Rabbit

Applications Key:  W=Western Blotting  IF-IC=Immunofluorescence (Immunocytochemistry)
Reactivity Key:  H=Human  Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

IRAK1 (Human Specific) Antibody detects endogenous levels of total IRAK1 protein. No cross reactivity was detected with other family members at physiological conditions.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding glycine 696 of human IRAK1. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa, 293, and MCF7 cells using IRAK1 (Human Specific) Antibody.

Western Blotting

Western Blotting

Western blot analysis of extracts from THP-1 cells, differentiated with TPA (#9905, 80 nM for 24h) and treated with 1 μg/ml LPS for the indicated times, using IRAK1 Antibody (Human Specific).

IF-IC

IF-IC

Confocal immunofluorescent analysis of HT-1080 cells using IRAK1 Antibody (Human Specific) (green). Actin filaments have been labeled with DY-554 phalloidin (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye ).


Background

Interleukin-1 (IL-1) receptor-associated kinase (IRAK) is a serine/threonine-specific kinase that can be coprecipitated in an IL-1-inducible manner with the IL-1 receptor (1). The mammalian family of IRAK molecules contains four members (IRAK1, IRAK2, IRAK3/IRAK-M, and IRAK4). The binding of IL-1 to IL-1 receptor type I (IL-1RI) initiates the formation of a complex that includes IL-1RI, AcP, MyD88, and IRAKs (2). IRAK undergoes autophosphorylation shortly after IL-1 stimulation. The subsequent events involve IRAK dissociation from the IL-1RI complex, its ubiquitination, and its association with two membrane-bound proteins: TAB2 and TRAF6. The resulting IRAK-TRAF6-TAB2 complex is then released into the cytoplasm where it activates protein kinase cascades, including TAK1, IKKs, and the stress-activated kinases (3).

  1. Dinarello, C.A. (1996) Blood 87, 2095-147.
  2. Takaesu, G. et al. (2001) Mol Cell Biol 21, 2475-84.
  3. Janssens, S. and Beyaert, R. (2003) Mol Cell 11, 293-302.

Application References

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Companion Products

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

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