FIG 7.

Intracellular ATP levels of cells at log phase and stationary phase. Intracellular ATP amounts determined in ΔompR mutant (A) and overexpression of F-type atp operon or gcvTHP isogenic strains (B) were compared to the levels in wild-type cells. Data are presented as mean ± SD from six biological replicates. An unpaired t test was performed to determine the statistical significance of two-group comparisons and one-way ANOVA for multiple-group comparisons. *, P < 0.05; ***, P < 0.001; ****, P < 0.0001.