the portion of the rrnb operon coding for 16 s rna was modified to permit efficient in vitro transcription by t7 rna polymerase of full-length , correctly terminated , biologically active 16 s rna ( w. krzyzosiak et al. , 1987 , biochemistry 26 , 2353-2364 ) .
C0040649
transcription
C0035668
rna