Figure 7.
Recovery of acid resistance of mutant cells lacking all three rpoS-activating sRNA genes induced by single sRNAs. Each rpoS-activating sRNA was overexpressed in the triple mutant cells, and acid resistance evaluated based on colony-forming abilities of both exponentially growing and stationary-phase cells. Overexpression of sRNAs was induced by 1.0 mmol/L IPTG.