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Growth of fra mutants on F-Asp. The bacterial strains indicated were grown on M9 minimal medium with 19 mM ammonium chloride and supplemented with the following carbon sources: 5 mM glucose, 5 mM F-Asp, or 5 mM F-Asp and 5 mM glucose. All data points are the means from triplicate cultures measured on two different occasions (6 total points). Error bars represent standard deviations.
