Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within regulation of DNA-templated transcription. Predicted to be active in nucleus. Human ortholog(s) of this gene implicated in Ayme-Gripp syndrome; cataract; and cataract 21 multiple types. Orthologous to human MAF (MAF bZIP transcription factor).