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Growth curves of E. faecalis parental strain V583T and RR17 mutant strain on EA as the sole carbon source in M9HY medium containing 10 μg/ml of tetracycline. EA was provided at 100 mM and CoB12 at 40 nM. Filled and open symbols represent growth under anaerobic and aerobic conditions, respectively. Squares represent E. faecalis V583T, while circles indicate the RR17 mutant. The error bars represent standard deviations calculated from two independent cultures. OD525, OD at 525 nm.
