In Saccharomyces cerevisiae, vacuoles are inherited by the formation of tubular and vesicular structures from the mother vacuole, the directed projection of these structures into the bud and the homotypic fusion of these vesicles. We have previously exploited a cell-free inheritance assay to show that the fusion step of vacuole inheritance requires cytosol, ATP and the GTPase Ypt7p. Here we demonstrate, using affinity-purified antibodies and purified recombinant proteins, a requirement for Sec17p (yeast alpha-SNAP) and Sec18p (yeast NSF) in homotypic vacuole fusion in vitro. Thus, Sec17p and Sec18p, which are typically involved in heterotypic transport steps, can also be involved in homotypic organelle fusion. We further show that vacuole-to-vacuole fusion is stimulated by certain fatty acyl-coenzyme A compounds in a Sec18p-dependent fashion. Finally, our data suggest the presence of a cytosolic factor which activates vacuole membrane-bound Sec18p.
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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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