Glutathione (GSH), a non-protein thiol product with various biological activities, has been widely used in pharmaceutical and food industries. Recently, genetic engineering becomes an important strategy for obtaining GSH-high-producing strains. However, auxotrophic selection markers used may result in reduced cell growth or GSH production. In the present study, clustered regularly interspaced short palindromic repeats (CRISPR) and Cas9-associated-system (CRISPR-Cas), in which gRNA expression constructs and homologous DNA fragments of target genes were co-transformed into Saccharomyces cerevisiae cells, was used for the construction of the prototrophic strain derived from the engineered auxotrophic strain W303-1b/FGP. As a result, the prototrophic strain W303-1b/FGPPT showed a significantly shorter culture cycle compared with the auxotrophic strain. Furthermore, chemically defined medium could be used to culture strain W303-1b/FGPPT that might have great interests in industrial fermentation.
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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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