Reference: Kosugi A, et al. (2000) A permease exhibiting a dual role for lysine and biotin uptake in Saccharomyces cerevisiae. J Biosci Bioeng 89(1):90-3

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Abstract


Among Saccharomyces cerevisiae strains each defective in one of 11 amino acid permeases, a lysine permease disruptant (DK) exhibited about 2-fold reductions in maximum cell density and fermentation ability compared to the parent in a synthetic medium. These unusual properties of DK were found to result from the requirement of biotin for growth, in contrast to the parent whose growth was not dependent on external biotin. The rate of 14C-labeled biotin uptake and the intracellular free biotin content of DK were 2-2.5 fold lower than in the parent. We suggest that lysine permease in S. cerevisiae has the ability to transport both lysine and biotin.

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Journal Article
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Kosugi A, Koizumi Y, Yanagida F, Udaka S
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