Production of 1,2-propanediol from glycerol in saccharomyces cerevisiae

Joon Young Jung, Hyun Shik Yun, Jinwon Lee, Min Kyu Oh

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Glycerol has become an attractive carbon source in the biotechnology industry owing to its low price and reduced state. However, glycerol is rarely used as a carbon source in Saccharomyces cerevisiae because of its low utilization rate. In this study, we used glycerol as a main carbon source in S. cerevisiae to produce 1,2-propanediol. Metabolically engineered S. cerevisiae strains with overexpression of glycerol dissimilation pathway genes, including glycerol kinase (GUT1), glycerol 3-phosphate dehydrogenase (GUT2), glycerol dehydrogenase (gdh), and a glycerol transporter gene (GUP1), showed increased glycerol utilization and growth rate. More significant improvement of glycerol utilization and growth rate was accomplished by introducing 1,2-propanediol pathway genes, mgs (methylglyoxal synthase) and gldA (glycerol dehydrogenase) from Escherichia coli. By engineering both glycerol dissimilation and 1,2-propanediol pathways, the glycerol utilization and growth rate were improved 141% and 77%, respectively, and a 2.19 g 1,2-propanediol/l titer was achieved in 1% (v/v) glycerolcontaining YEPD medium in engineered S. cerevisiae.

Original languageEnglish
Pages (from-to)846-853
Number of pages8
JournalJournal of microbiology and biotechnology
Volume21
Issue number8
DOIs
Publication statusPublished - 2011 Aug

Keywords

  • 1,2-propanediol
  • Glycerol
  • Metabolic engineering
  • Saccharomyces cerevisiae

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

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