Enables DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in positive regulation of gene expression and positive regulation of transcription by RNA polymerase II. Acts upstream of or within several processes, including adult behavior; in utero embryonic development; and regulation of epidermal cell differentiation. Predicted to be part of transcription regulator complex. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; integumental system; and sensory organ. Orthologous to human MAFG (MAF bZIP transcription factor G). [provided by Alliance of Genome Resources, Apr 2022]