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β-Galactosidase activity monitored at transition phase during growth in TB of the wild-type strain AJW1786 or isogenic derivatives lacking CRP (AJW1884), FNR (AJW1938), IclR (AJW1794), FadR (AJW1807), AceA (AJW1876), PoxB (AJW1818), AckA (AJW1940), or AckA and Pta (AJW1868). Activity is expressed as a percentage of the mean activity of the wild-type strain AJW1786 (4,993 ± 179; n = 7). Each value represents the mean ± SEM of at least three independent measurements.
