When Saccharomyces cerevisiae is starved of glucose, the gluconeogenic enzymes fructose-1,6-bisphosphatase (FBPase), malate dehydrogenase (MDH2), isocitrate lyase (Icl1) and phosphoenolpyruvate carboxykinase (Pck1) are induced. However, when glucose is added to prolonged starved cells, these enzymes are degraded in the vacuole via the vacuole import and degradation (Vid) pathway. Recent evidence suggests that the Vid pathway merges with the endocytic pathway at actin patches where endocytic vesicles are formed. The convergence of the Vid pathway with the endocytic pathway allows cells to remove intracellular and extracellular proteins simultaneously. However, the genes that regulate this step of the convergence have not been identified previously. Here we show that VID30 plays a critical role for the association of Vid vesicles and actin patches. Vid30 is constitutively expressed and interacts with Vid vesicle proteins Vid24 and Sec28 but not with the cargo protein FBPase. In the absence of SEC28 or VID24, Vid30 association with actin patches was prolonged. In cells lacking the VID30 gene, FBPase and Vid24 were not localized to actin patches, suggesting that Vid30 has a role in the association of Vid vesicles and actin patches. Vid30 contains a LisH and a CTLH domain, both of which are required for FBPase degradation. When these domains were deleted, FBPase trafficking to the vacuole was impaired. We suggest that Vid30 also has a role in the Vid pathway at a later step in a process that is mediated by the LisH and CTLH domains.
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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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