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YAP1 over‐expression in Saccharomyces cerevisiae enhances glutathione accumulation at its biosynthesis and substrate availability levels

YAP1 over‐expression in Saccharomyces cerevisiae enhances glutathione accumulation at its... Microbiological production of glutathione using genetically engineered yeast strains has a potential to satisfy the increasing industrial demand of this tripeptide. In the present work accumulation of glutathione in response to YAP1 over‐expression in Saccharomyces cerevisiae was studied. The over‐expression resulted in intracellular glutathione level over two times higher than in the parent strain. Transcript analyses revealed that, in addition to the genes encoding enzymes in the glutathione biosynthesis pathway (GSH1 and GSH2), the expression levels of the genes in the cysteine biosynthesis pathway (CYS3 and CYS4) were also significantly higher in the YAP1 over‐expressed strain. This suggests that YAP1 over‐expression affects glutathione accumulation at both its biosynthesis and substrate availability levels. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biotechnology Journal Wiley

YAP1 over‐expression in Saccharomyces cerevisiae enhances glutathione accumulation at its biosynthesis and substrate availability levels

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References (13)

Publisher
Wiley
Copyright
Copyright © 2012 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1860-6768
eISSN
1860-7314
DOI
10.1002/biot.201100363
pmid
22009669
Publisher site
See Article on Publisher Site

Abstract

Microbiological production of glutathione using genetically engineered yeast strains has a potential to satisfy the increasing industrial demand of this tripeptide. In the present work accumulation of glutathione in response to YAP1 over‐expression in Saccharomyces cerevisiae was studied. The over‐expression resulted in intracellular glutathione level over two times higher than in the parent strain. Transcript analyses revealed that, in addition to the genes encoding enzymes in the glutathione biosynthesis pathway (GSH1 and GSH2), the expression levels of the genes in the cysteine biosynthesis pathway (CYS3 and CYS4) were also significantly higher in the YAP1 over‐expressed strain. This suggests that YAP1 over‐expression affects glutathione accumulation at both its biosynthesis and substrate availability levels.

Journal

Biotechnology JournalWiley

Published: Apr 1, 2012

Keywords: ; ; ; ;

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