Fig. 2From: Metabolic engineering of the l-serine biosynthetic pathway improves glutathione production in Saccharomyces cerevisiaeTime-dependent glutathione production of the GCI strain with or without external l-Ser supplementation. A Biomass concentration (g/L). B Intracellular glutathione content (%). C Volumetric glutathione production (mg/L). Blue and red filled circles represent the GCI strain grown without l-Ser and with 300 mg/L l-Ser, respectively. Values are the mean, and error bars show the standard deviation (n = 3)Back to article page