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Cellodextrin Transport in Yeast for Improved Biofuel Production

Science  01 Oct 2010:
Vol. 330, Issue 6000, pp. 84-86
DOI: 10.1126/science.1192838

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Abstract

Fungal degradation of plant biomass may provide insights for improving cellulosic biofuel production. We show that the model cellulolytic fungus Neurospora crassa relies on a high-affinity cellodextrin transport system for rapid growth on cellulose. Reconstitution of the N. crassa cellodextrin transport system in Saccharomyces cerevisiae promotes efficient growth of this yeast on cellodextrins. In simultaneous saccharification and fermentation experiments, the engineered yeast strains more rapidly convert cellulose to ethanol when compared with yeast lacking this system.

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