title: Improving the stereoselectivity of bakers' yeast reductions by genetic engineering.
abstract: [formula: see text] The stereoselectivities of bakers' yeast catalyzed reductions of beta-keto esters can be manipulated by genetic design. Strains in which two major beta-keto ester reductases are either knocked out or overexpressed have been constructed. The former approach results in whole cell biocatalysts with reversed stereoselectivity from unmodified bakers' yeast while the latter shows useful improvements in stereoselectivity. These results indicate that the "designer yeast" approach can provide useful biocatalysts for these transformations.
authors.affiliation: Department of Chemistry, University of Florida, Gainesville 32611, USA.
authors.forename: S
authors.initials: S
authors.lastname: Rodríguez
authors.forename: M
authors.initials: M
authors.lastname: Kayser
authors.forename: J D
authors.initials: JD
authors.lastname: Stewart
mesh_terms: D002384:Catalysis; D064429:Fatty Acid Synthases / Q000235:genetics / Q000378:metabolism; D005818:Genetic Engineering; D007527:Isoenzymes / Q000235:genetics / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*
chemical_list: D007527:Isoenzymes; D064429:Fatty Acid Synthases