Hygromycin B is an aminoglycoside antibiotic that inhibits protein synthesis in prokaryotes and eukaryotes. Twenty-four hygromycin B-resistants mutants were isolated from sake yeast, and were divided into three different degrees of strength according to hygromycin B resistance. Three of four hygromycin B strongly resistant mutants produced increased amounts of isoamyl acetate in sake brewing test, although isoamyl alcohol levels remained unchanged. Many hygromycin B-resistants mutants showed higher E/A ratios than K-701 in culture with koji extract medium. Strain HMR-18 produced the largest amount of isoamyl acetate, and its alcohol acetyltransferase (AATFase) activity was 1.3-fold that of K-701. DNA microarray analysis showed that many genes overexpressed in HMR-18 were involved in stress responses (heat shock, low pH, and so on) but HMR-18 showed thermo- and acid-sensitivity. It was strongly resistant to hygromycin B and another aminoglycoside antibiotic, G418.
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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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