NFKBIB (NFKB Inhibitor Beta) is a Protein Coding gene. The protein encoded by this gene belongs to the NF-kappa-B inhibitor family, which inhibits NF-kappa-B by complexing with and trapping it in the cytoplasm. Phosphorylation of serine residues on these proteins by kinases marks them for destruction via the ubiquitination pathway, thereby allowing activation of the NF-kappa-B, which translocates to the nucleus to function as a transcription factor. NF-kappaB regulation involves the inhibitor protein NFKBIB, which form complexes with NF-kappaB to sequester it in the cytoplasm. Overexpression of NFKBIB protein in IAV infected cells led to lower levels of IAV. MiR-20a could promote activation of the NFkappaB pathway and downstream targets Livin and Survivin by targeting NFKBIB, which potentially contributed to GC chemoresistance.