Predicted to enable DNA-binding transcription repressor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in response to cocaine. Located in membrane and nucleus. Human ortholog(s) of this gene implicated in Parkinson's disease. Orthologous to human EN1 (engrailed homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]