Mitogen-activated protein kinase kinase kinase 14 (EC 2.7.11.25) (NF- kappa beta-inducing kinase) (Serine/threonine-protein kinase NIK) (HsNIK); Lymphotoxin beta-activated kinase which seems to be exclusively involved in the activation of NF-kappa-B and its transcriptional activity. Induces the processing of NF-kappa-B 2/P100. Could act in a receptor-selective manner (By similarity) (946 aa)