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Table 2 Comparison of metabolites yield of recombinant SH5, SH8*, and SH9* strains

From: Co-production of hydrogen and ethanol by pfkA-deficient Escherichia coli with activated pentose-phosphate pathway: reduction of pyruvate accumulation

Strainb Overexpressed gene Yield of metabolitesa,d (mol mol−1)
H2 Ethanol Acetate Pyruvate
SH5 1.44 0.79 0.67
zwf and gnd 1.60 1.09 0.35
SH8*c 1.01 (0.59) 0.89 (0.48) 0.73 (1.36)
zwf 1.20 (0.57) 1.18 (0.49) 0.41 (1.38)
gnd 1.05 (0.99) 0.96 (0.79) 0.67 (1.07)
zwf and gnd 1.32 (0.98) 1.38 (0.81) 0.18 (1.05)
SH9* 1.68 (1.68) 0.85 (0.51) 0.78 (1.37)
zwf 1.76 (1.75) 0.80 (0.52) 0.87 (1.45)
gnd 1.78 (1.64) 0.87 (0.68) 0.71 (1.13)
zwf and gnd 1.88 (1.70) 1.40 (0.65) 0.15 (1.28)
SH10 zwf and gnd 1.57 1.30 0.38
  1. aYields of metabolites were calculated from three individual experiments and the standard deviation was less than 10 %
  2. bRefer to Table 1 for the genotype of the strains
  3. cData for SH8* were obtained from the previous study and presented for comparison [18]
  4. dYields of metabolites in parentheses were obtained with gluconate as carbon source