Flocculation in Saccharomyces cerevisiae and mitochondrial DNA structure |
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Authors: | Johannes Hinrichs Ulf Stahl Karl Esser |
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Affiliation: | (1) Lehrstuhl für Allgemeine Botanik, Ruhr-Universität Bochum, Postfach 1021 48, D-4630 Bochum 1, Federal Republic of Germany;(2) Fachgebiet Mikrobiologie, Technische Universität Berlin, Seestrasse 13, FB 13, D-1000 Berlin 65, Federal Republic of Germany |
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Abstract: | Summary Mitochondrial mutants of indstrial yeast strains with different flocculation efficiencies were assayed for involvement of mitochondrial DNA (mtDNA) in flocculation. Most of the mutants exhibited a decreased flocculation rate in comparison to that of the wild strains. The mtDNA of a moderately flocculating wild strain was characterized by restriction enzyme analysis and by the localization of several mitochondrial genes. This molecular analysis of mitochondrial mutants revealed two areas of mtDNA involvement in flocculation, namely a region of the subunit 9 of the ATPase gene (oli 1) and a region of the subunit 3 of the cytochrome-c-oxidase gene (oxi 2). |
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