The gene product of the Saccharomyces cerevisiae open reading frame YDR229w (named IVY1 for: Interacting with Vps33p and Ypt7p) was found to interact with both the GTPase Ypt7p and the Sec1-related Vps33 protein. While deletion of IVY1 does not lead to any recognized change in phenotype, overexpression of Ivy1p leads to fragmentation of the vacuole, missorting of the vacuolar enzyme carboxypeptidase Y (CPY) to the exterior of the cell, and an accumulation of multivesicular bodies inside the cell. All effects caused by the overexpression of Ivy1p can be reset by simultaneously raising the amount of Vps33p. This suppression activity of Vps33p suggests that Ivy1p and Vps33p at least partially counteract the action of each other in the cell. The intracellular level of Ivy1p increases in cells approaching stationary growth phase at which part of the protein is located at the rim of the vacuole. In addition to its specific interactions with members of two regulatory protein families, Ivy1p in vitro shows a marked propensity for binding phospholipids with high affinity.
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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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