A major question in cell biology is, how are organelles and macromolecular machines moved within a cell? The delivery of cargoes to the right place at the right time within a cell is critical to cellular health. Failure to do so is often catastrophic for animal physiology and results in diseases of the gut, brain, and skin. In budding yeast, a myosin V motor, Myo2, moves cellular materials from the mother cell into the growing daughter bud. Myo2-based transport ensures that cellular contents are shared during cell division. During transport, Myo2 is often linked to its cargo via cargo-specific adaptor proteins. This simple organism thus serves as a powerful tool to study how myosin V moves cargo, such as organelles. Some critical questions include how myosin V moves along the actin cytoskeleton, or how myosin V attaches to cargo in the mother. Other critical questions include how the cargo is released from myosin V when it reaches its final destination in the bud. Here, we review the mechanisms that regulate the vacuole-specific adaptor protein, Vac17, to ensure that Myo2 delivers the vacuole to the bud and releases it at the right place and the right time. Recent studies have revealed that Vac17 is regulated by ubiquitylation and phosphorylation events that coordinate its degradation and the detachment of the vacuole from Myo2. Thus, multiple post-translational modifications tightly coordinate cargo delivery with cellular events. It is tempting to speculate that similar mechanisms regulate other cargoes and molecular motors.
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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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