FIG. 2.

Effects of deletion of the evgSA, ydeO, gadX, rpoS, nagE, nagC, and crp genes on GlcNAc-induced expression of the mdtEF genes. E. coli KAM3 and derivative strains were grown in LB medium with (open bars) or without (solid bars) 10 mM GlcNAc. (A) β-Galactosidase activity of the mdtEF promoter-fused reporter enzyme. (B) Amounts of mdtE mRNA. The ordinate indicates the mdtE mRNA amounts relative to the amount of rrsA 16S rRNA. The data correspond to mean values for three independent experiments. Error bars correspond to standard deviations.