Anti-NF-κB p65 (Ab-281) antibody
Specifications
| Product Cat#: | AB-07-3339 |
| Product type: | Primary antibody |
| Antigen: | NF-κB p65 (Ab-281) |
| Immunogen: | A synthetic peptide derived from human NF-κB around the phosphorylation site of serine 281 (E-L-S/P-E-P). The exact amino-acid sequence is proprietary. |
| Species immunized: | Rabbit |
| Isotype: | IgG |
| Applications: | ELISA (1:4500); Western Blot (1:500-1:2500); Immunohistochemistry (1:50-1:100) |
| Reactivity: | Human, Mouse, Rat |
| Clonality (clone number): | Polyclonal |
| Form: | Liquid |
| Buffer: | PBS (without Mg2+ and Ca2+ ), pH 7.4, 0.02% sodium azide and 50% glycerol |
| Concentration: | 1 mg/ml |
| Purity: | Antigen affinity chromatography |
| Storage: | Aliquot and freeze at -20°C. Avoid multiple freeze/thaw cycles. |
| Alternative names: | NFKB3; Nuclear factor NF-kappa-B p65 subunit; p65; RELA; TF65; Transcription factor p65 |
Target information
NF-kappa-B is a pleiotropic transcription factor present in almost all cell types and is the endpoint of a series of signal transduction events that are initiated by a vast array of stimuli related to many biological processes such as inflammation, immunity, differentiation, cell growth, tumorigenesis and apoptosis. NF-kappa-B is a homo- or heterodimeric complex formed by the Rel-like domain-containing proteins RELA/p65, RELB, NFKB1/p105, NFKB1/p50, REL and NFKB2/p52. The heterodimeric RELA-NFKB1 complex appears to be most abundant one. The dimers bind at kappa-B sites in the DNA of their target genes and the individual dimers have distinct preferences for different kappa-B sites that they can bind with distinguishable affinity and specificity. Different dimer combinations act as transcriptional activators or repressors, respectively. The NF-kappa-B heterodimeric RELA-NFKB1 and RELA-REL complexes, for instance, function as transcriptional activators. NF-kappa-B is controlled by various mechanisms of post-translational modification and subcellular compartmentalization as well as by interactions with other cofactors or corepressors. NF-kappa-B complexes are held in the cytoplasm in an inactive state complexed with members of the NF-kappa-B inhibitor (I-kappa-B) family. In a conventional activation pathway, I-kappa-B is phosphorylated by I-kappa-B kinases (IKKs) in response to different activators, subsequently degraded thus liberating the active NF-kappa-B complex which translocates to the nucleus. The inhibitory effect of I-kappa-B on NF-kappa-B through retention in the cytoplasm is exerted primarily through the interaction with RELA. RELA shows a weak DNA-binding site which could contribute directly to DNA binding in the NF-kappa-B complex. Beside its activity as a direct transcriptional activator, it is also able to modulate promoters accessibility to transcription factors and thereby indirectly regulate gene expression. Associates with chromatin at the NF-kappa-B promoter region via association with DDX1. Essential for cytokine gene expression in T-cells (PubMed:15790681). The NF-kappa-B homodimeric RELA-RELA complex appears to be involved in invasin-mediated activation of IL-8 expression.
Provider
Erpantech Laboratory
