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

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.

SUBMITTER: Wang C 

PROVIDER: S-EPMC3806156 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature