IRF9 Human Recombinant Protein

IRF9: Transcription regulatory factor that mediates signaling by type I IFNs (IFN-alpha and IFN-beta). Following type I IFN binding to cell surface receptors, Jak kinases (TYK2 and JAK1) are activated, leading to tyrosine phosphorylation of STAT1 and STAT2. The phosphorylated STATs dimerize, associate with IRF9/ISGF3G to form a complex termed ISGF3 transcription factor, that enters the nucleus. ISGF3 binds to the IFN stimulated response element (ISRE) to activate the transcription of interferon stimulated genes, which drive the cell in an antiviral state. Belongs to the IRF family.

Protein type: DNA-binding

Chromosomal Location of Human Ortholog: 14q11.2

Cellular Component: nucleoplasm; cytoplasm; cytosol; nucleus

Molecular Function: protein binding; transcription factor activity

Biological Process: transcription from RNA polymerase II promoter; cell surface receptor linked signal transduction; regulation of transcription, DNA-dependent; cytokine and chemokine mediated signaling pathway; interferon type I biosynthetic process; defense response to virus