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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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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