Improvement of L-arabinose fermentation by modifying the metabolic pathway and transport in Saccharomyces cerevisiae

Biomed Res Int. 2013:2013:461204. doi: 10.1155/2013/461204. Epub 2013 Sep 30.

Abstract

The L-arabinose utilization pathway was established in Saccharomyces cerevisiae, by expressing the codon-optimized araA, araB, and araD genes of Lactobacillus plantarum. After overexpressing the TAL1, TKL1, RPE1, RKI1, and GAL2 genes and adaptive evolution, the L-arabinose utilization of the recombinant strain became efficient. The resulting strain displayed a maximum specific growth rate of 0.075 h(-1), a maximum specific L-arabinose consumption rate of 0.61 g h(-1) g(-1) dry cell weight, and a promising ethanol yield of 0.43 g g(-1) from L-arabinose fermentation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arabinose / genetics*
  • Arabinose / metabolism
  • Biological Transport
  • Ethanol / chemical synthesis*
  • Fermentation
  • Glucose / chemistry
  • Lactobacillus plantarum / genetics
  • Metabolic Engineering
  • Metabolic Networks and Pathways / genetics*
  • Saccharomyces cerevisiae / genetics
  • Saccharomyces cerevisiae / metabolism*

Substances

  • Ethanol
  • Arabinose
  • Glucose