Global transcription engineering was developed as a tool to reprogram gene transcription for eliciting new phenotypes important for technological applications (Science 2006, 314(5805):1565-1568). A recent report indicated that the beneficial growth advantage of yeast cells expressing the SPT15-300 mutation is the result of enhanced uptake and/or improved utilization of leucine and thus was seen only on defined media with low concentrations of leucine (Appl Environ Microbiol 2009, 75(19):6055-6061). Further investigation towards a leucine-prototrophic strain of industrial lager brewer's yeast indicated that integration one copy of SPT15-300 in SPT15 allele, however, did lead to an increased ethanol tolerance on complex rich medium at high gravity fermentation condition. Under brewing conditions, the SPT15-300 mutant produced 80.78 g/L ethanol from 200 g/L carbohydrates after 384 h, almost twice as much as that of the wild-type strain. The results convinced us that the effect of global regulator modification of yeast is at multi-genes level and is extremely complicated.
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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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