FIG. 5.

Northern blots carried out with 5 μg of RNA isolated from wild-type strain BL23 (WT), the ptsHI47T or levR mutant, or the ptsHI47T levR double mutant (A) and wild-type strain BL23 (WT), the ptsHI47T or rpoN mutant, or the ptsHI47T rpoN double mutant (B). The strains were grown in MRS fermentation medium complemented with glucose. The levA-specific probe was used to detect the lev operon transcript of 3.4 kb. The positions of the 16S and 23S rRNAs are indicated with arrows.