Anti-NF- B p65

Transcription factors of the nuclear factor kappa B (NF-kappaB)/Rel family is a ubiquitously expressed transcription factor that regulates many cytokine and Ig genes. It is involved in immune, inflammatory, viral, and acute phase responses. There are five family members in mammals: RelA (p65), c-Rel, RelB, NF-kappaB1 (p105/p50) and NF-kappaB2 (p100/p52). The most studied NF-kappaB complex consists of the p50 and p65 subunits, both containing a 300 amino acid region with homology to the Rel proto-oncogene product. The p50 subunit binds DNA, whereas the p65 subunit is responsible for the interaction of NF-kappaB with its inhibitor, IkappaB. In most cell types, the p50/p65 heterodimer is located within the cytoplasm complexed to IkappaB. This complex prevents nuclear translocation and activity of NF-kappaB. In response to stimuli such as cytokines, LPS, and viral infections, IkappaB is phosphorylated at critical residues. This phosphorylation induces dissociation of the IkappaB/NF-kappaB complex, allowing the free heterodimeric NF-kappaB to form a heterotetramer that translocates to the nucleus. In the nucleus, it binds to the kappaB site within promoters and enhancers and functions as a transcriptional activator. Applications: Western Bloting: 1:500-1:2000., ELISA: Suggested dilution 1:10000., Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.