nucleoplasmic rna polymerase ii ( nucleosidetriphosphate : rna nucleotidyltransferase , ec 2.7.7.6 ) from calfthymus is phosphorylated by homologous cyclic amp-independent protein kinase ( atp : protein phosphotransferase , ec 2.7.1.37 ) .
C0031727
kinase
C0033640
protein