Disruption of ptsG gene and manXYZ operon of ethanol-producing Escherichia coli KO11: Effects on glucose and xylose utilization and ethanol production

摘要

Ethanol-producing Escherichia coli strain KOll consumed 99% of the glucose and only 13% of the xylose in a mixture of glucose (60 g/L) and xylose (40 g/L) during the 72-h fermentation at 30°C. The deletion mutants AptsG, AmanXYZ, and ΔptsG/ manXYZ utilized 42%, 78%, and 35% of the glucose and 50%, 32%, and 32% of the xylose, respectively.