TABLE 1 .

Doubling times of mutants compared to the wild type

Strain	Doubling time (h) of strain growna
	Without La	With La
Wild-type	4.75 ± 0.35	4.25 ± 0.30
ΔxoxF mutant	4.81 ± 0.36
ΔxoxG mutant	11.86 ± 1.01*
ΔmxaF mutant		3.58 ± 0.21
ΔmxaG mutant		3.91 ± 0.25

^aDoubling time values represent the means ± standard deviations for three replicates, and they were calculated from four time points during the exponential phase of growth. La was supplied at 30 μM. The asterisk indicates a statistically highly significant change in growth rate compared to other strains (P < 0.001).