Vps33p is a member of the Sec1/munc18-like protein (SM protein) family involved in vesicular protein transport to the yeast vacuole. It is part of a high molecular weight complex which is required for homotypic vacuole fusion, and participates in Golgi-to-endosome and endosome-to-vacuole transport steps. Deletions in the vps33 gene results in severe vacuolar protein sorting and vacuolar morphology defects. We used a temperature sensitive (ts) vps33 deletion strain in a high copy plasmid suppressor approach to identify genes possibly acting along the same vesicular trafficking pathway(s) as Vps33p. While only the original VPS33 gene could restore the vacuolar enzyme sorting and vacuolar morphology defects, several suppressors of temperature senstivity were found. Sequence analysis identified the ubiquitin-ligase Ufd4p as the only open reading frame (ORF) of two suppressor plasmids. Further suppressor candidates included the ubiquitin-processing protease Ubp10p and genes whose products are involved in more general stress responses. The result of this screening supports the emerging concept of a crosstalk between vesicular trafficking pathways and the ubiquitin/proteasome system of protein degradation.
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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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