FIG. 7.

The induced resistance to SNP is not affected by YjbI or YjbH. Cultures were grown aerobically and treated with a sublethal concentration (0.5 mM) of SNP or left untreated. The cultures were then challenged with 10 mM SNP for 30 min and plated on TBAB medium. Viable counts were performed, and survival rates were calculated as the CFU after treatment with a toxic dose of SNP divided by the CFU in the same culture treated with water. The results shown are the means from at least three independent experiments. Error bars indicate the standard deviation. Strains 1A1 (wild type [wt]), LUW219 (ΔyjbIH), and LUW261 (ΔyjbIH Δhmp) were used.