Fig. 5From: Enhanced acetic acid stress tolerance and ethanol production in Saccharomyces cerevisiae by modulating expression of the de novo purine biosynthesis genesEffect of the ADE genes overexpression on the relative abundance of intracellular amino acid. The relative abundance was calculated by normalization of the concentration of the control strain BHO under control (CK) or acetic acid (AC) conditions (a). Yeast cells were cultured in the YPD medium with GABA (0, 0.25 and 0.5 g/L) addition in the presence of 5.0 (b) or 3.6 (c) g/L acetic acid. Results are the average of two runsBack to article page