Enables peroxisome proliferator activated receptor binding activity. Predicted to be involved in several processes, including anoikis; regulation of gene expression; and regulation of signal transduction. Predicted to act upstream of or within B cell homeostasis and activation of NF-kappaB-inducing kinase activity. Located in cytosol. Part of IkappaB kinase complex. Used to study irritable bowel syndrome and perinatal necrotizing enterocolitis. Human ortholog(s) of this gene implicated in Behcet's disease; Bloch-Sulzberger syndrome; immunodeficiency 33; and learning disability. Orthologous to human IKBKG (inhibitor of nuclear factor kappa B kinase regulatory subunit gamma). [provided by Alliance of Genome Resources, Apr 2022]