The ECM38 gene encodes the gamma-glutamyl transpeptidase enzyme, an enzyme involved in glutathione turnover. The enzyme was found to be present in the S288C strain, BY4742, but absent in another widely used strain congenic to S288C, YPH499. Cloning and sequencing the genes from these yeasts indicated the presence of 11 single nucleotide polymorphisms in the coding region and eight single nucleotide polymorphisms in the promoter region of the ECM38 gene of YPH499 (but none in that of BY4742). One of the SNPs in the ECM38 ORF led to a G --> D conversion in a region conserved in all gamma-GT enzymes and was found to be responsible for the loss of activity in this strain. The presence of gamma-GT activity in other YPH strains led us to trace the origins of the polymorphisms in YPH499. Our results indicated that among the progenitor strains, YPH1 and YPH2, YPH1 carried the polymorphisms seen in YPH499 and also lacked the gamma-GT activity. The implications of these results for the use of these widely used S288C strains and the origin of these single nucleotide polymorphisms are presented.
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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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