nf-kappa-b是一种广泛存在的转录因子，参与多种生物学过程。它被特定的抑制剂以非活性状态保存在细胞质中。当抑制剂降解时，nf-kappa-b移向细胞核并激活特定基因的转录。nf-kappa-b由结合到rel、rela或relb的nfkb1或nfkb2组成。nf-kappa-b最丰富的形式是nfkb1与该基因的产物rela复合。已经发现了四个编码不同亚型的转录变体。[由RefSeq提供，2011年9月]
NF-kappa-B is a ubiquitous transcription factor involved in several biological processes. It is held in the cytoplasm in an inactive state by specific inhibitors. Upon degradation of the inhibitor, NF-kappa-B moves to the nucleus and activates transcription of specific genes. NF-kappa-B is composed of NFKB1 or NFKB2 bound to either REL, RELA, or RELB. The most abundant form of NF-kappa-B is NFKB1 complexed with the product of this gene, RELA. Four transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]