NFkB-p65 Antibody – Rabbit Polyclonal

NF-kappa-B is a ubiquitous transcription factor involved in several biological processes. It is held in the cytoplasm in an inactive state by specific inhibitors. Upon degradation of the inhibitor, NF-kappa-B moves to the nucleus and activates transcription of specific genes. NF-kappa-B is composed of NFKB1 or NFKB2 bound to either REL, RELA, or RELB. The most abundant form of NF-kappa-B is NFKB1 complexed with the product of this gene, RELA. Four transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

NFkB-p65: a subunit of NF-kappa-B transcription complex, which plays a crucial role in inflammatory and immune responses. The inhibitory effect of I-kappa-B upon NF-kappa-B in the cytoplasm is exerted primarily through the interaction with p65. P65 shows a weak DNA-binding site which could contribute directly to DNA binding in the NF-kappa-B complex. There are five NFkB proteins in mammals (RelA/NFkB-p65, RelB, c-Rel, NF-_B1/NFkB-p105, and NF-_B2/NFkB-p100). They form a variety of homodimers and heterodimers, each of which activates its own characteristic set of genes. Three splice-variant isoforms have been identified.

Protein type: DNA-binding; Nuclear receptor co-regulator; Transcription factor

Chromosomal Location of Human Ortholog: 11q13.1

Cellular Component: cytoplasm; cytosol; nuclear chromatin; nucleoplasm; nucleus; transcription factor complex

Molecular Function: actinin binding; chromatin binding; chromatin DNA binding; DNA binding; histone deacetylase binding; identical protein binding; NF-kappaB binding; phosphate binding; protein binding; protein heterodimerization activity; protein homodimerization activity; protein kinase binding; protein N-terminus binding; RNA polymerase II transcription factor activity, enhancer binding; transcription activator binding; transcription factor activity; transcription factor binding; ubiquitin protein ligase binding

Biological Process: activation of NF-kappaB transcription factor; cytokine and chemokine mediated signaling pathway; inflammatory response; membrane protein intracellular domain proteolysis; negative regulation of apoptosis; negative regulation of transcription from RNA polymerase II promoter; negative regulation of transcription, DNA-dependent; positive regulation of cell proliferation; positive regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of interferon type I production; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; regulation of inflammatory response; response to organic substance; response to UV-B; stimulatory C-type lectin receptor signaling pathway; T cell receptor signaling pathway