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Table 1 Summary of the fermentation kinetics for main engineered strains

From: Systematic engineering of the central metabolism in Escherichia coli for effective production of n-butanol

Strain YB (g/L) PB (g/L/h) YB/G (g/g) NADH (μmol/g cell) Specific enzyme activity (U/mg protein)
PDH Zwf Pgl GltA
BuT-8 2.7a 0.11a 0.14a 42.2 0.7 ND ND ND
BuT-9 4.3 0.18 0.22 60.9 1.6 6.1 ND ND
BuT-10 4.9 0.20 0.25 75.8 18.3 0.5 ND ND
BuT-12 5.4 0.23 0.27 82.6 ND ND 6.2 2.2
BuT-14 6.1 0.21 0.31 96.1 ND ND ND 1.5
  1. aThe kinetic data were drawn from the previous report [19]. The development course of producer strains for the n-butanol production was shown in Additional file 1: Fig. S1. U μmole/min, Y B the n-butanol titer, ND not determined