The two homologous genes GPD1 and GPD2, encoding two isoenzymes of NAD(+)-dependent glycerol-3-phosphate dehydrogenase in industrial yeast Saccharomyces cerevisiae CICIMY0086, had been deleted. The obtained two kinds of mutants gpd1Delta and gpd2Delta were studied under alcoholic fermentation conditions. gpd1Delta mutants exhibited a 4.29% (relative to the amount of substrate consumed) decrease in glycerol production and 6.83% (relative to the amount of substrate consumed) increased ethanol yield while gpd2Delta mutants exhibited a 7.95% (relative to the amount of substrate consumed) decrease in glycerol production and 7.41% (relative to the amount of substrate consumed) increased ethanol yield compared with the parental strain. The growth rate of the two mutants were slightly lower than that of the wild type under the exponential phase whereas ANG1 (gpd1Delta) and the decrease in glycerol production was not accompanied by any decline in the protein content of the strain ANG1 (gpd1Delta) but a slight decrease in the strain ANG2 (gpd2Delta). Meanwhile, dramatic decrease of acetate acid formation was observed in strain ANG1 (gpd1Delta) and ANG2 (gpd2Delta) compared to the parental strain. Therefore, it is possible to improve the ethanol yield by interruption of glycerol pathway in industrial alcoholic yeast.
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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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