Enables heat shock protein binding activity; identical protein binding activity; and transcription cis-regulatory region binding activity. Involved in several processes, including cellular response to cytokine stimulus; cellular response to lipid; and regulation of gene expression. Acts upstream of or within cellular response to cytokine stimulus and cellular response to organic cyclic compound. Located in cytosol; neuron projection; and nucleus. Part of protein-containing complex. Used to study fatty liver disease. Biomarker of alcoholic hepatitis; non-alcoholic steatohepatitis; and transient cerebral ischemia. Human ortholog(s) of this gene implicated in several diseases, including carcinoma (multiple); common variable immunodeficiency; melanoma; prostate cancer; and tropical spastic paraparesis. Orthologous to human NFKB1 (nuclear factor kappa B subunit 1). [provided by Alliance of Genome Resources, Apr 2022]