Fig. 3From: Acetoin production from lignocellulosic biomass hydrolysates with a modular metabolic engineering system in Bacillus subtilisA–D Schematic representation of intracellular redox coenzyme-related levels after knockout of the ydiH gene. All assays were performed in triplicate, and the standard deviations of biological replicates are indicated by error barsBack to article page