Figure 3.

The ahpA gene is not expressed during sporulation. Sporulation was induced by the resuspension method, and samples were taken 0, 2, or 4 hr postresuspension. Shown are the expression levels of ahpA (A) and katX (B) based on β‐galactosidase activity from a fusion of the ahpA promoter or katX to lacZ. Error bars indicate the standard error for three independent cultures. (C) Fold change in expression of ahpA (left) or katX (right) in strains lacking katX (left) or ahpA (right) compared to isogenic wild‐type strains (mutant/wild type)