Enables DNA-binding transcription factor activity. Acts upstream of or within positive regulation of interleukin-12 production and positive regulation of transcription, DNA-templated. Located in cytoplasm and nucleus. Is expressed in eye; genitourinary system; and heart. Orthologous to human REL (REL proto-oncogene, NF-kB subunit). [provided by Alliance of Genome Resources, Apr 2022]