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 and the heterodimeric p65-p50 complex appears to be most abundant one.
[1] "The DNA binding subunit of NF-kappa B is identical to factor KBF1 and homologous to the rel oncogene product."Kieran M., Blank V., Logeat F., Vandekerckhove J., Lottspeich F., le Bail O., Urban M.B., Kourilsky P., Baeuerle P.A., Israel A.Cell 62:1007
