Predicted to enable RNA polymerase II general transcription initiation factor activity and TBP-class protein binding activity. Predicted to be involved in RNA polymerase II preinitiation complex assembly. Predicted to act upstream of or within negative regulation of transcription by RNA polymerase II. Predicted to be located in nucleus. Predicted to be part of negative cofactor 2 complex. Orthologous to human DR1 (down-regulator of transcription 1).