Enables RNA polymerase II-specific DNA-binding transcription factor binding activity. Involved in positive regulation of transcription by RNA polymerase II. Predicted to be located in cytoplasm and nuclear lumen. Predicted to be part of cytoplasmic exosome (RNase complex) and nuclear exosome (RNase complex). Human ortholog(s) of this gene implicated in pontocerebellar hypoplasia. Orthologous to human EXOSC9 (exosome component 9). [provided by Alliance of Genome Resources, Apr 2022]