Figure 5.
RNase H cleavage of the E. coli lysC leader RNA. Labeled RNAs generated in the presence of increasing concentrations of lysine (a) or AEC (b) were incubated with a DNA oligonucleotide complimentary to the 3′ side of helix 1 to allow hybridization, which was followed by digestion of DNA/RNA hybrids with RNase H. FL indicates full-length transcripts; C indicates RNase H cleavage products. Lysine or AEC concentrations (mM) used in each transcription are shown above each lane. c) Quantitation of protection in response to lysine (■) or AEC (▲).