Product nameAnti-NF-kB p65 (phospho S468) antibody
See all NF-kB p65 primary antibodies
DescriptionRabbit polyclonal to NF-kB p65 (phospho S468)
SpecificityThis antibody detects endogenous levels of NF-kB p65 protein only when phosphorylated at Serine 468.
Tested applicationsSuitable for: WB, IHC-P, ELISAmore details
Species reactivityReacts with: Rat, Human
Predicted to work with: Mouse
Synthetic peptide corresponding to Human NF-kB p65 aa 435-484.
- IHC-P: breast carcinoma tissue. WB: extracts of MOLT cells, ovary cancer cells and Hela cells.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: PBS, 50% Glycerol, 0.87% Sodium chloride
Without Mg2+ and Ca2+
Concentration information loading...
PurityProtein A purified
Purification notesThis antibody was affinity purified from rabbit antiserum by affinity chromatography using epitope specific phosphopeptide.
Our Abpromise guarantee covers the use of ab31473 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Detects a band of approximately 65 kDa (predicted molecular weight: 60 kDa).|
|IHC-P||1/50 - 1/100.|
FunctionNF-kappa-B is a pleiotropic transcription factor which is present in almost all cell types and is involved in many biological processed 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 and the heterodimeric p65-p50 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. 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. NF-kappa-B heterodimeric p65-p50 and p65-c-Rel complexes are transcriptional activators. The NF-kappa-B p65-p65 complex appears to be involved in invasin-mediated activation of IL-8 expression. The inhibitory effect of I-kappa-B upon NF-kappa-B 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. Associates with chromatin at the NF-kappa-B promoter region via association with DDX1.
Sequence similaritiesContains 1 RHD (Rel-like) domain.
Domainthe 9aaTAD motif is a transactivation domain present in a large number of yeast and animal transcription factors.
modificationsUbiquitinated, leading to its proteasomal degradation. Degradation is required for termination of NF-kappa-B response.
Monomethylated at Lys-310 by SETD6. Monomethylation at Lys-310 is recognized by the ANK repeats of EHMT1 and promotes the formation of repressed chromatin at target genes, leading to down-regulation of NF-kappa-B transcription factor activity. Phosphorylation at Ser-311 disrupts the interaction with EHMT1 without preventing monomethylation at Lys-310 and relieves the repression of target genes.
Phosphorylation at Ser-311 disrupts the interaction with EHMT1 and promotes transcription factor activity (By similarity). Phosphorylation on Ser-536 stimulates acetylation on Lys-310 and interaction with CBP; the phosphorylated and acetylated forms show enhanced transcriptional activity.
Reversibly acetylated; the acetylation seems to be mediated by CBP, the deacetylation by HDAC3. Acetylation at Lys-122 enhances DNA binding and impairs association with NFKBIA. Acetylation at Lys-310 is required for full transcriptional activity in the absence of effects on DNA binding and NFKBIA association. Acetylation can also lower DNA-binding and results in nuclear export. Interaction with BRMS1 promotes deacetylation of 'Lys-310'.
Cellular localizationNucleus. Cytoplasm. Nuclear, but also found in the cytoplasm in an inactive form complexed to an inhibitor (I-kappa-B). Colocalized with RELA in the nucleus upon TNF-alpha induction.
- Information by UniProt
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Ab31473, at a dilution of 1/50, staining NF-kB p65 in paraffin embedded human breast carcinoma tissue by Immunohistochemistry.
Left image: Untreated.
Right image: Treated with synthesized peptide.
All lanes : Anti-NF-kB p65 (phospho S468) antibody (ab31473) at 1/500 dilution
Lane 1 : Extracts from MOLT cells (5-30ug).
Lane 2 : Extracts from ovary cancer cells (5-30ug).
Lane 3 : Extracts from Hela cells (5-30ug).
All lanes : goat-anti-rabbit IgG-AP-conjugate.
Predicted band size: 60 kDa
Observed band size: 65 kDa why is the actual band size different from the predicted?
Additional bands at: 42 kDa. We are unsure as to the identity of these extra bands.
This product has been referenced in:
- Lu X et al. PPM1A is a RelA phosphatase with tumor suppressor-like activity. Oncogene N/A:N/A (2013). Read more (PubMed: 23812431) »
- Huang J & Siragy HM Glucose promotes the production of interleukine-1beta and cyclooxygenase-2 in mesangial cells via enhanced (Pro)renin receptor expression. Endocrinology 150:5557-65 (2009). WB ; Rat . Read more (PubMed: 19861503) »