Fig 5.

Growth profiles of wild-type versus ΔmrpA mutant strains of M. acetivorans cultured with growth-limiting 10 mM acetate. The starting pH was 6.8, and the Na⁺ concentration was 0.54 M. Data shown are the means ± standard deviations of three replicate experiments. Symbols: ■, wild type; ○, ΔmrpA mutant. The final optical densities for the wild type and mutant were 0.12 ± 0.01 and 0.07 ± 0.00, respectively.