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Improved ethanol tolerance in Escherichia coli by changing the cellular fatty acids composition through genetic manipulation

  • Lian Hua Luo
  • , Pil Soo Seo
  • , Jeong Woo Seo
  • , Sun Yeon Heo
  • , Dae Hyuk Kim
  • , Chul Ho Kim
  • Korea Research Institute of Bioscience and Biotechnology
  • Jeonbuk National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

To investigate the effect of cellular fatty acids composition on ethanol tolerance in Escherichia coli, we overexpressed either des, encoding fatty acid desaturase from Bacillus subtilis, or fabA, encoding β-hydroxydecanoyl thio-ester dehydrase from E. coli, or both genes together, into E. coli. Recombinant E. coli harboring fabA had elevated tolerance against ethanol compared to wild type strain. In contrast, des decreased resistance to ethanol. Co-expression of both genes together complemented ethanol tolerance of E. coli. This result indicates how to engineer bacterial strains to be resistant to higher concentrations of ethanol.

Original languageEnglish
Pages (from-to)1867-1871
Number of pages5
JournalBiotechnology Letters
Volume31
Issue number12
DOIs
StatePublished - 2009.11

Keywords

  • Desaturase
  • Escherichia coli
  • Ethanol tolerance
  • FabA
  • Fatty acids composition

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Chemical
  • Biological Sciences

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