Enables DNA-binding transcription factor activity, RNA polymerase II-specific and protein kinase binding activity. Involved in cytokine-mediated signaling pathway; defense response to other organism; and positive regulation of transcription by RNA polymerase II. Located in cytoplasm and nucleus. Is expressed in eye; ovary; telencephalon; and urinary system. Human ortholog(s) of this gene implicated in herpes simplex; inflammatory bowel disease 14; multiple sclerosis; rheumatoid arthritis; and systemic lupus erythematosus. Orthologous to human IRF5 (interferon regulatory factor 5). [provided by Alliance of Genome Resources, Apr 2022]