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Effect of ccpA, strC, resD-resE, and ctaA mutations on the expression of ctaBCD′-lacZ. β-Galactosidase activities of the ctaBCD′-lacZ fusion in strains RB1298 and RB1330 grown in Schaeffer’s medium alone or supplemented with 0.5% glucose or in strains RB1301, RB1303, and RB1305 grown in Schaeffer’s medium alone were measured and plotted as described in the legend to Fig. 2. wt, wild type.
