| Efficient accumulation of oleic acid in Saccharomyces cerevisiae caused by expression of rat elongase 2 gene (rELO2) and its contribution to tolerance to alcohols. | |
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MedLine Citation:
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PMID: 21687964 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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When the cells of Saccharomyces cerevisiae are exposed to high concentration of ethanol, the content of oleic acid (C18:1n-9) increased as the initial concentration of ethanol increased. Based on this observation, we attempted to confer ethanol tolerance to S. cerevisiae by manipulating fatty acid composition of the cells. Rather than altering OLE1 expression [the desaturase making both C16:1n-7 (palmitoleic acid) and C18:1n-9], we introduced elongase genes. Introduction of rat elongase 1 gene (rELO1) into S. cerevisiae gave cis-vaccenic acid (cis-C18:1n-7) by conversion from C16:1n-7, and the increase in this C18:1 fatty acid did not confer ethanol tolerance to the cells. On the other hand, the introduction of rat elongase 2 gene (rELO2), which elongates C16:0 to C18:0, drastically increased C18:1n-9 content, and the cells acquired ethanol tolerance, emphasizing the specific role of C18:1n-9. Furthermore, the transformant of rELO2 also conferred tolerance to n-butanol, n-propanol, and 2-propanol. |
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Authors:
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Hisashi Yazawa; Yasushi Kamisaka; Kazuyoshi Kimura; Masakazu Yamaoka; Hiroshi Uemura |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-6-18 |
Journal Detail:
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Title: Applied microbiology and biotechnology Volume: - ISSN: 1432-0614 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-6-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8406612 Medline TA: Appl Microbiol Biotechnol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Higashi 1-1-1, Tsukuba, Ibaraki, 305-8566, Japan. |
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