. "Catalysis of the reaction: ATP + (DNA-directed RNA polymerase II) = ADP + phospho-(DNA-directed RNA polymerase II); phosphorylation occurs on residues in the carboxy-terminal domain (CTD) repeats." . . "STK9" . "RNA polymerase II carboxy-terminal domain kinase activity" . "[RNA-polymerase]-subunit kinase activity" . "ATP:DNA-directed RNA polymerase phosphotransferase activity" . "CTD kinase activity" . "RNA polymerase subunit kinase activity" . "RNA-polymerase-subunit kinase activity" . . .