Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity and RNA polymerase II-specific DNA-binding transcription factor binding activity. Acts upstream of or within transcription by RNA polymerase II and transcription by RNA polymerase III. Located in cytoplasm; female pronucleus; and male pronucleus. Is expressed in several structures, including brain; early conceptus; genitourinary system; gut; and retina. Used to study spinocerebellar ataxia type 17. Human ortholog(s) of this gene implicated in late onset Parkinson's disease; schizophrenia; spinocerebellar ataxia type 17; and type 1 diabetes mellitus. Orthologous to human TBP (TATA-box binding protein). [provided by Alliance of Genome Resources, Apr 2022]