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Neither cheA1 nor cheA2 is required for optimal growth of PtoDC3000 in liquid KB media. PtoDC3000, PtoDC3000 cheA2−, and PtoDC3000 cheA1-were grown in liquid KB (A) and minimal media (B). ns = not significantly different from wildtype in a Student’s t-test at p < 0.05. Data represent the average of four replicates and error bars are the standard error. Essentially identical results were obtained in 2 independent experiments.
