Predicted to enable RNA polymerase II CTD heptapeptide repeat phosphatase activity. Predicted to be involved in termination of RNA polymerase II transcription. Predicted to act upstream of or within mRNA processing. Predicted to be located in nucleus. Predicted to be part of mRNA cleavage and polyadenylation specificity factor complex. Orthologous to several human genes including SSU72 (SSU72 homolog, RNA polymerase II CTD phosphatase).