Fig. 7
Metabolic flux distribution of L-tryptophan biosynthesis with DO control stages I and III during the later fermentation period of L-tryptophan production. Values in brackets indicate metabolic flux in DO stage III. Metabolite abbreviations: Glc gGlucose, GAP glyceraldehyde-3-phosphate, P3G 3-phosphoglycerate, PEP phosphoenolpyruvate, Pyr pyruvate, AcCoA acetyl coenzyme A, Ru5P ribulose-5-phosphate, X5P xylulose-5-phosphate, S7P sedoheptulose-7-phosphate, E4P erythrose-4-phosphate, Cho chorismate, PRPP 5-phosphoribosyl pyrophosphate, OAA oxaloacetate, αKG α-ketoglutarate, Gln glutamine, Glu glutamate, Ala alanine, Lac lactate, HAc acetate, Ser serine, Trp tryptophan