in the escherichia coli host cells , rna polymerase initiates transcription of large quantities ( up to 0.5 to 1 % of total e. coli rna ) of virus-specific rna in the recombinant plasmids carrying the 4.2-kb fragment ( patv-6 ) but not in patv-2 which contains the 3.2-kb fragment .
C0040649
transcription
C0035668
rna