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REACTIVITY SENSITIVITY MW (kDa) SOURCE
55 Rabbit

Product Usage Information

Storage: Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

Phospho-IRF-7 (Ser437/438) Antibody (Mouse Specific) recognizes endogenous levels of mouse IRF-7 protein when dually phosphorylated at Ser437 and Ser438. This antibody can also recognize single phosphorylation at these sites, but has a preference for Ser438.


Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser437 and Ser438 of mouse IRF-7 protein. Antibodies are purified by protein A and peptide affinity chromatography.

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, IRF-9/ISGF3γ, 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 to 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.


Entrez-Gene Id 54123
Swiss-Prot Acc. P70434


For Research Use Only. Not For Use In Diagnostic Procedures.
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Phospho-IRF-7 (Ser437/438) Antibody (Mouse Specific)