Description: The MCFA30 monoclonal antibody recognizes human NF kappa B (NFkB) p65 subunit when serine 529 is phosphorylated. NFkB, also known as nuclear factor kappa-light chain enhancer of activated B cells, is a ubiquitous transcription factor that regulates the transcription of many genes involved in cell proliferation, apoptosis, development, immunity and cancer. Functional NFkB is a homo- or hetero-dimer composed of 5 members of the NFkB family: p65 (RelA), c-Rel, RelB, p50 (NFkB1, p105 precursor protein), and p52 (NFkB2, p100 precursor protein). The activity of the complex is negatively regulated by binding to IkB inhibitors that sequester NFkB into the cytoplasm, inhibiting its transcriptional activity. NFkB-activating agents like tumor necrosis factor (TNF) alpha, interleukin-1 beta, lipopolysaccharide, camptothecin, and phorbol ester (PMA) induce the phosphorylation and degradation of IkB, leading to the translocation of NFkB to the nucleus where it binds to kB motifs and regulates gene expression. The activity of p65-containing NFkB complexes is positively regulated by phosphorylation of the p65 subunit at serine 529 and/or serine 536.
Applications Reported: This MCFA30 antibody has been reported for use in western blotting, immunohistochemical staining of formalin-fixed paraffin embedded tissue sections, microscopy, and ELISA.
Applications Tested: This MCFA30 antibody has been tested by immunohistochemistry of formalin-fixed paraffin embedded human tissue sections using either low or high pH antigen retrieval at less than or equal to 10 µg/mL. This MCFA30 antibody has also been tested by western blot analysis of human cell lysates at less than or equal to 5 µg/mL. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.
Purity: Greater than 90%, as determined by SDS-PAGE.
Aggregation: Less than 10%, as determined by HPLC.
Filtration: 0.2 µm post-manufacturing filtered.
Nuclear factor kB p65 (NF-kB p65) is encoded by the RELA gene and is present on chromosome 11 in humans. NF-kB P65 is also known as RelA (v-rel avian reticuloendotheliosis viral oncogene homolog A) and belongs to the Rel family of proteins. It is one of the two subunits of NF-kB (Nuclear factor kappa-light-chain-enhancer of activated B cells) that heterodimerizes with the other subunits p50 or p52. However, binding of TNF alpha to its cognate receptor phosphorylates IKK which in turn phosphorylates I kB allowing proteasomal degradation of I kB. Phosphorylation of p65 at Ser 536 located in the carboxy-terminal transactivation domains (TAD) leads to nuclear localization of the transcriptionally active complex and NF-kB mediated transactivation of several downstream genes. It specifically plays a key role in transcription of immunoglobulin k (kappa) gene in mature B-lymphoid cells.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: NF-kappa-B p65delta3; NF-kappa-B transcription factor p65; Nuclear factor NF-kappa-B p65 subunit; Nuclear factor of kappa light polypeptide gene enhancer in B-cells 3; Transcription factor p65; v-rel avian reticuloendotheliosis viral oncogene homolog A; v-rel reticuloendotheliosis viral oncogene homolog A
Gene Aliases: NFKB3; p65; RELA
UniProt ID: (Human) Q04206
Entrez Gene ID: (Human) 5970