Cell Signaling Technology

Product Pathways - NF-kB Signaling

Phospho-IRF-7 (Ser471/472) Antibody #5184

Applications Reactivity Sensitivity MW (kDa) Source
W H (M) (R) (Hm) (Mk) (B) (Dg) (Pg) (Hr) Transfected Only 65 Rabbit

Applications Key:  W=Western Blotting
Reactivity Key:  H=Human  M=Mouse  R=Rat  Hm=Hamster  Mk=Monkey  B=Bovine  Dg=Dog  Pg=Pig  Hr=Horse
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

Phospho-IRF-7 (Ser471/472) Antibody detects transfected levels of IRF-7 when phosphorylated at Ser471 and 472.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser471/472 of human IRF-7 protein. Antibodies were purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from 293T cells, mock transfected or transfected with IKKε and/or IRF-7, using Phospho-IRF-7 (Ser471/472) Antibody (upper) or IRF-7 Antibody #4920 (lower).

Background

Interferon regulatory factors (IRFs) comprise a family of transcription factors that function within the Jak/Stat pathway to regulate interferon (IFN) and IFN-inducible gene expression in response to viral infection (1). IRFs play an important role in pathogen defense, autoimmunity, lymphocyte development, cell growth, and susceptibility to transformation. The IRF family includes nine members: IRF-1, IRF-2, ISGF3γ/p48, IRF-3, IRF-4 (Pip/LSIRF/ICSAT), IRF-5, IRF-6, IRF-7, and IRF-8/ICSBP. All IRF proteins share homology in their amino-terminal DNA-binding domains. IRF family members regulate transcription through interactions with proteins that share similar DNA-binding motifs, such as IFN-stimulated response elements (ISRE), IFN consensus sequences (ICS), and IFN regulatory elements (IRF-E) (2).

IRF-7, which is functionally similar to IRF-3, is preferentially expressed in lymphoid cells and induced by virus, LPS, and IFN-α (3-5). IRF-7 plays an essential role in the induction of type I interferon in response viral infection (6-8). Like IRF-3, IRF-7 is regulated at multiple serine phosphorylation sites near its carboxyl terminus, which are required for nuclear translocation, DNA binding, and transcriptional activity (9-11).

  1. Taniguchi, T. et al. (2001) Annu Rev Immunol 19, 623-55.
  2. Honda, K. and Taniguchi, T. (2006) Nat Rev Immunol 6, 644-58.
  3. Au, W.C. et al. (1998) J Biol Chem 273, 29210-7.
  4. Wathelet, M.G. et al. (1998) Mol Cell 1, 507-18.
  5. Marié, I. et al. (1998) EMBO J 17, 6660-9.
  6. Sato, M. et al. (2000) Immunity 13, 539-48.
  7. Honda, K. et al. (2005) Nature 434, 772-7.
  8. Colina, R. et al. (2008) Nature 452, 323-8.
  9. Lin, R. et al. (2000) J Biol Chem 275, 34320-7.
  10. Yang, H. et al. (2003) J Biol Chem 278, 15495-504.
  11. Caillaud, A. et al. (2005) J Biol Chem 280, 17671-7.

Application References

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Companion Products

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

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