Brefeldin A has proven to be a useful pharmacologic tool, which, when added to mammalian cells, results in a block in secretion as well as the structural disruption of specific intracellular organelles. In spite of our understanding of some of the biochemistry underlying the action of brefeldin A, the most proximal molecular target(s) of the drug remain elusive. In attempting to address this problem, a genetic approach will undoubtedly prove useful and complementary to the biochemical identification of such a site(s). As a result of the relatively resistant nature of wild-type Saccharomyces cerevisiae to brefeldin A, an approach utilizing yeast genetics has not been possible. We report the selective sensitivity of three drug-sensitive strains of S. cerevisiae (ise-1, ISE-2, and erg6) with enhanced membrane permeability allowing uptake of brefeldin A. Upon addition of the drug, growth is dramatically inhibited and invertase secretion is rapidly, specifically, and reversibly blocked at the level of the endoplasmic reticulum. In addition, only structural analogues of brefeldin A effective in mammalian cells are active in these yeast strains.
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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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