Lysine Overproduction Mutations in the YeastSaccharomyces cerevisiae Are Introduced into Industrial Yeast Strains

Lysine Overproduction Mutations in the YeastSaccharomyces cerevisiae Are Introduced into... Yeast mutants resistant to a toxic lysine analog, thialysine were obtained by a method described in the literature [1]. A strain excreting the maximum amount of lysine (0.45 g/l) was selected from these mutants. The intracellular content of lysine was also increased by 30%. The genetic nature of lysine overproduction was studied in this strain. An increase in the amount of excreted lysine was shown to be determined by at least two genes, one of which carries a mutation of thialysine resistance manifesting the pleiotropic effect of lysine overproduction (Th1 R) and the other is involved in the regulation of lysine production (PRL). Linkage groups of these genes were determined: the first gene was mapped to the IV chromosome and the second, to the XV chromosome. Both genetic characters were introduced into industrial baker's yeast strains via a series of backcrosses. The stabilization of the genome in the newly derived strains was confirmed by electrokaryotyping. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Lysine Overproduction Mutations in the YeastSaccharomyces cerevisiae Are Introduced into Industrial Yeast Strains

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/lp/springer_journal/lysine-overproduction-mutations-in-the-yeastsaccharomyces-cerevisiae-0KSh0MbYak
Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/A:1016675014734
Publisher site
See Article on Publisher Site

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