The diversity of plasma membrane (PM) proteins presents a challenge for the achievement of cargo-specific regulation of endocytosis. Here, we describe a family of proteins in yeast (ARTs, for arrestin-related trafficking adaptors) that function by targeting specific PM proteins to the endocytic system. Two members (Art1 and Art2) of the family were discovered in chemical-genetic screens, and they direct downregulation of distinct amino acid transporters triggered by specific stimuli. Sequence analysis revealed a total of nine ART family members in yeast. In addition to similarity to arrestins, the ARTs each contain multiple PY motifs. These motifs are required for recruitment of the Rsp5/Nedd4-like ubiquitin ligase, which modifies the cargoes as well as the ARTs. As a result, ubiquitinated cargoes are internalized and targeted to the vacuole (lysosome) for degradation. We propose that ARTs provide a cargo-specific quality-control pathway that mediates endocytic downregulation by coupling Rsp5/Nedd4 to diverse plasma membrane proteins.
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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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Evidence ID | Analyze ID | File | Description |
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