Enables RNA polymerase II-specific DNA-binding transcription factor binding activity. Involved in glial cell proliferation and neuroblast proliferation. Acts upstream of or within positive regulation of DNA-binding transcription factor activity and positive regulation of transcription by RNA polymerase II. Predicted to be located in cytoplasm. Predicted to be active in nucleus. Orthologous to human IFRD1 (interferon related developmental regulator 1). [provided by Alliance of Genome Resources, Apr 2022]