Enables DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in several processes, including regulation of transcription, DNA-templated; response to cAMP; and response to steroid hormone. Located in several cellular components, including cytosol; neuron projection; and presynaptic membrane. Biomarker of congestive heart failure; renal carcinoma; and visual epilepsy. Orthologous to human FOSL1 (FOS like 1, AP-1 transcription factor subunit). [provided by Alliance of Genome Resources, Apr 2022]