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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Enhanced production of isoamyl alcohol and isoamyl acetate by ubiquitination-deficient Saccharomyces cerevisiae mutants.

Aromatic compounds are an important element in the flavor of yeast-fermented alcohol. We isolated mutants of Saccharomyces cerevisiae capable of growth at high levels of hydrostatic pressure. Among them, the HPG1 mutants, with a defect in their Rsp5 ubiquitin ligase, were found to produce high amounts of aromatics due to enhanced leucine uptake, with isoamyl alcohol production 2- to 3-fold and isoamyl acetate production 4- to 8-fold that of the wild-type strain. The result suggests that the HPG1/RSP5 mutant alleles could be new resources for producing these flavoring compounds for yeast-fermented alcoholic beverages.[1]

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