Toeprinting of the ompA and ompF mRNAs after phenol extraction. A, primer extension analysis of the ompA mRNA after phenol extraction. The experiment was carried out in the same way as described for Fig. 5A except that reaction products in lanes 4, 6, and 8 were phenol-extracted to remove proteins before primer extension. B, toeprinting of the ompF mRNA after phenol extraction. The experiment was carried out in the same way as described for Fig. 5B except that reaction products in lanes 4, 6, and 8 were phenol-extracted to remove proteins before primer extension. Lane 1, without YafO-His6; lane 2, 12.3 μm YafO-His6; lane 3, 0.05 μm 70 S ribosomes with 12.3 μMYafO-His6; lane 4, 0.05 μm 70 S ribosomes with 12.3 μm YafO-His6; lane 5, 0.05 μm 70 S ribosomes with 1 μm tRNAfMet; lane 6, 0.05 μm 70 S ribosomes with 1 μm tRNAfMet; lane 7, 0.05 μm 70 S ribosomes, 1 μm tRNAfMet with 12.3 μm YafO-His6; lane 8, 0.05 μm 70 S ribosomes, 1 μm tRNAfMet with 12.3 μm YafO-His6.