Fig. 3From: Model-driven intracellular redox status modulation for increasing isobutanol production in Escherichia coli Comparison of the gapN expression (a), isobutanol and biomass (b), intracellular redox cofactors in exponential (c) and stationary (d) phase, for strain LA05, LA06, LA07, LA08 and LA09. Asterisks indicate significant differences (*P < 0.05, **P < 0.01).Back to article page