Enables DNA-binding transcription factor activity; double-stranded DNA binding activity; and sequence-specific DNA binding activity. Involved in several processes, including conditioned taste aversion; positive regulation of pri-miRNA transcription by RNA polymerase II; and response to steroid hormone. Located in membrane; neuron projection; and nucleus. Biomarker of congestive heart failure; glomerulonephritis; and hypertension. Orthologous to human FOS (Fos proto-oncogene, AP-1 transcription factor subunit). [provided by Alliance of Genome Resources, Apr 2022]