The genetic modification of yeast strains can be used as an approach for the improvement of ethanol fermentation. msn2p transcription factor is implicated in yeast stress response and its activation is controlled by protein kinase A (PKA). PKA activation inhibits the translocation of msn2p to the nucleus. An in silico analysis of msn2 protein sequence revealed serine residue at position 625 as a potent target of PKA. Thus, substitution of this serine residue with alanine increases the susceptibility of the cells to ethanol challenge reducing IC50 from 3% vol/vol to 2.42% vol/vol. Additionally, cells carrying this substitution were shown a significantly reduced fermentation rate at 30°C and 18°C increasing the total fermentation time by approximately two and three times, respectively. These results clearly indicate that Ser625 is absolutely necessary for yeast to retain its fermentation ability and ethanol tolerance.
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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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