Predicted to enable RNA polymerase II complex binding activity and identical protein binding activity. Predicted to be involved in dephosphorylation of RNA polymerase II C-terminal domain and mRNA 3'-end processing. Predicted to be part of RNA polymerase II, holoenzyme. Is expressed in dorsal root ganglion; renal calyx; and submandibular gland primordium. Orthologous to human RPRD1A (regulation of nuclear pre-mRNA domain containing 1A). [provided by Alliance of Genome Resources, Apr 2022]