FIG 6.

Fermentation profiles of the ccpA-overexpressing strains and the wild-type strain using glucose as the sole carbon resource. 824-P, wild-type C. acetobutylicum strain harboring the control plasmid pIMP1-P_thl. 824-ccpA, C. acetobutylicum strain harboring plasmid pIMP1-P_thl-ccpA, which carries a wild-type ccpA gene for overexpression. 824-ccpA-m, C. acetobutylicum strain harboring plasmid pIMP1-P_thl-ccpA_mut, which carries the cre_ORF mutant ccpA gene for overexpression. Total solvents represent the sum of acetone, butanol, and ethanol. The mean from three independent biological replicates and the standard deviation are shown.