Nuclear factor NF-kappa-B p105 subunit is aprotein that in humans is encoded by theNFKB1gene.[5]
This gene encodes a 105 kDprotein which can undergo cotranslational processing by the 26Sproteasome to produce a 50 kD protein. The 105 kD protein is a Rel protein-specific transcription inhibitor and the 50 kD protein is a DNA binding subunit of the NF-kappaB (NF-κB) protein complex. NF-κB is atranscription factor that is activated by various intra- and extra-cellular stimuli such ascytokines, oxidant-free radicals, ultraviolet irradiation, and bacterial or viral products. Activated NF-κB translocates into the nucleus and stimulates the expression of genes involved in a wide variety of biological functions; over 200 known genes are targets of NF-κB in various cell types, under specific conditions. Inappropriate activation of NF-κB has been associated with a number of inflammatory diseases while persistent inhibition of NF-κB leads to inappropriate immune cell development or delayed cell growth.[6]
NFKB1 has been shown tointeract with:
This article incorporates text from theUnited States National Library of Medicine, which is in thepublic domain.