FIGURE 3.

Complementation of the GI of sigX-lacZ in each gene disruption mutant by artificial induction of the gene. Means of the β-Gal activities from three independent experiments and the standard deviations are shown. The x axis is the same as in the legend to Figure 1. The relevant genotypes are indicated above the panel. Strains are as follows: left, OAM738; right, OAM739. The chromosomal structure of the operon containing the corresponding gene is shown under the panel. Boxes and bent arrows show open-reading frames and promoters, respectively. The gene names are shown along the boxes. The black bar shows the cloned promoter region for analyzing promoter expression.