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3 Biotech

, 9:77 | Cite as

Engineering of phosphoenolpyruvate: carbohydrate phosphotransferase system increased acetate assimilation in Escherichia coli

  • Pengfei Gu
  • Hao Niu
  • Xiangyu Fan
  • Juan Gao
  • Qiang LiEmail author
Original Article

Abstract

Acetate is a potential low-cost carbon source and can be used for microbial production of valuable chemicals in Escherichia coli. In this study, separate and simultaneous inactivation of the ptsG, ptsI, and ptsP genes involved in the phosphoenolpyruvate:carbohydrate phosphotransferase system was performed in E. coli and the effects on cell growth and acetate assimilation were evaluated. The mutant strain with double deletion of ptsG and ptsP exhibited faster acetate use than the other mutants. Inactivation of ptsI seriously reduced acetate consumption. This work provides a novel engineering target for improving acetate use rates.

Keywords

Acetate Phosphoenolpyruvate:carbohydrate phosphotransferase system Metabolic engineering Escherichia coli 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (31600066, 31100088, 31870105), the Shandong Provincial Natural Science Foundation (ZR2016CB20, ZR2016CL02), and the State Key Laboratory of Microbial Technology Open Projects Fund (M2016-10).

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Supplementary material

13205_2019_1600_MOESM1_ESM.docx (15 kb)
Supplementary material 1 (DOCX 14 KB)

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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  • Pengfei Gu
    • 1
  • Hao Niu
    • 1
  • Xiangyu Fan
    • 1
  • Juan Gao
    • 1
  • Qiang Li
    • 1
    Email author
  1. 1.School of Biological Science and TechnologyUniversity of JinanJinanPeople’s Republic of China

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