NFKBID is a symbol for the gene, Nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, delta, in humans. Other names include: NF-kappa-B inhibitor delta; I-kappa-B-delta; IkB-delta; IkappaBdelta; IkappaBNS; T-cell activation NFKB-like protein; TA-NFKBH. The encoded protein has an amino acid length of 313 and a mass of 33.5 kDa. Other isoforms may exist. NFKBID is a member of the NF-kappa-B inhibitor family. This gene shares homology with other species, including: Rat, Frog, Chicken.