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satABC (SP1681-3) is required for efficient growth on sialic acid. Strain 1121 Smr and mutants were grown for 60 h on chemically defined medium supplemented with 12 mM sialic acid as the sole carbon source. Growth was measured by the optical density at 600 nm. Data points are the means of three independent experiments performed in triplicate. Gray shading indicates a 95% confidence interval.
