IKK beta phospho S740, IKK beta phospho Ser740, p-IKK beta Ser740, IKKI kappa B kinase 2, IKK_, IKK _, I kappa B kinase beta, IkBKB, IKK 2, IKK B, IKK beta, IKK2, IKKB, Inhibitor of kappa light chain gene enhancer in B cells, Inhibitor of kappa light polypeptide gene enhancer in B cells, Inhibitor of kappa light polypeptide gene enhancer in B cells kinase beta, Inhibitor of nuclear factor kappa B kinase beta subunit, Inhibitor of nuclear factor kappa B kinase subunit beta, MGC131801, NFKBIKB, Nuclear factor NF kappa B inhibitor kinase beta, Nuclear factor of kappa light chain gene enhancer in B cells inhibitor, IKKB_HUMAN.
IKK beta (I-Kappa-B kinase-beta) is a member of the IKK complex which is composed of IKK alpha, IKK beta, IKK gamma and IKAP. Phosphorylation of I-Kappa-B on a serine residue by the IKK complex frees NF-kB from I-Kappa-B and marks it for degradation via ubiquination. IKK beta has been shown to activate NF-kB and phosphorylate IKB alpha and beta. Phosphorylation of 2 sites at the activation loop of IKK beta is essential for activation of IKK by TNF and IL1. Once activated, IKK beta autophosphorylates which in turn decreases IKK activity and prevents prolonged activation of the inflammatory response. Additionally, IKK beta activity can also be regulated by MEKK1.
