Fig. 3
From: Systematic engineering of pentose phosphate pathway improves Escherichia coli succinate production
Increased expression of PPP enzymes for succinate production. Relationship between the expression level (enzymatic activity) of each PPP enzyme and succinate production. Square symbol represents succinate titer and triangle symbol represents succinate yield. Values are the average of three biological replicates with error bars indicating one standard deviation. L, low expression level; M, medium expression level; H, high expression level