nuclear run-on assays carried out in the presence and absence of the rna polymerase ii inhibitor , alpha-amanitin , were used to determine the exact timing of the switch from inhibitor-sensitive transcription catalysed by host rna polymerase ii , to inhibitor-resistant transcription catalysed by the baculovirus-induced rna polymerase .
C0040649
transcription
C0035681
rna polymerase