I REL, IREL, Nuclear factor of kappa light polypeptide gene enhancer in B cells 3, RelB, Reticuloendotheliosis viral oncogene homolog B, Transcription factor RelB, v rel avian reticuloendotheliosis viral oncogene homolog, v rel reticuloendotheliosis viral oncogene homolog B, RELB_HUMAN, I-Rel.
The NFKB complex consists of NFKB1 or NFKB2 bound to REL, RELA, or RELB. The NFKB complex is inhibited by I kappa B proteins (NFKBIA, or NFKBIB), which inactivate NF kappa B by trapping it in the cytoplasm. Phosphorylation of serine residues on the I kappa B proteins by kinases (IKBKA, or IKBKB,) marks them for destruction via the ubiquitination pathway, thereby allowing activation of the NF kappa B complex. For some genes, activation requires NFKB interaction with other transcription factors, such as STAT, AP1 (JUN), and NFAT.
