Enables ATP binding activity. Contributes to IkappaB kinase activity. Involved in several processes, including positive regulation of NF-kappaB transcription factor activity; response to cholecystokinin; and response to lipopolysaccharide. Located in cytosol and intracellular membrane-bounded organelle. Part of IkappaB kinase complex. Used to study muscular atrophy and pneumonia. Biomarker of Alzheimer's disease; colitis; colon cancer; hypertension; and transient cerebral ischemia. Human ortholog(s) of this gene implicated in breast cancer; combined immunodeficiency (multiple); dermatitis; prostate cancer (multiple); and type 2 diabetes mellitus. Orthologous to human IKBKB (inhibitor of nuclear factor kappa B kinase subunit beta). [provided by Alliance of Genome Resources, Apr 2022]