May function as a negative regulator of NF-kappa-B by preventing RELA/p65 phosphorylation at 'Ser-536', thereby inhibiting its transcriptional activity. Through NF-kappa-B regulation may control cytokine release upon Toll-like receptors activation and therefore play a role in modulation of innate immunity. May also play a role in cell cycle progression and apoptotic process.
Subcellular locations: Cytoplasm, Nucleus
Targeted to the nucleus upon TNF-alpha treatment.
Expressed in all tissues tested, including spleen, lymph node, thymus, tonsil, peripheral blood leukocyte, bone marrow, liver, heart, brain, placenta, lung, skeletal muscle, kidney and pancreas.