Macroautophagy (hereafter autophagy) is an evolutionarily conserved process in which portions of the cytoplasm are engulfed, degraded, and subsequently recycled. The Atg17-Atg31-Atg29 complex translocates to the phagophore assembly site (PAS), where an autophagosome forms, at a very early stage of autophagy, playing a vital role in autophagy induction. Here, we identified a novel role of this complex in a late stage of autophagy where it coordinates with Atg11 to regulate autophagy-specific fusion with the vacuole. Atg17 and Atg11 interact with the vacuolar SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) Vam7 independently of each other. Several hydrophobic residues in helix 1 and helix 4 of Atg17 and the SNARE domain of Vam7 mediate the Atg17-Vam7 interaction. An F317D mutation of Atg17, which diminishes its interaction with Vam7 without affecting its interaction with Atg13 or Atg31, leads to a defect in the fusion of autophagosomes with the vacuole and decreased autophagy activity. These results provide the first demonstration that the Atg17-Atg31-Atg29 complex functions in both early and late stages of autophagy and also provide a mechanistic explanation for the coordination of autophagosome completion and fusion with the vacuole.
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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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