the copurification of rna polymerase iia to iio conversion activity with factors essential for promoter-dependent transcription and the observation that rna polymerase ii containing an unphosphorylated c-terminal domain is phosphorylated prior to elongation suggest that protein kinases that phosphorylate the c-terminal domain of subunit iia may play an essential role in transcription .
C0035679
rna
C0040649
transcription