Autophagy requires ubiquitin-like Atg8 and Atg12 conjugation systems, where Atg7 has a critical role as the sole E1 enzyme. Although Atg7 recognizes two distinct E2s, Atg3 and Atg10, it is not understood how Atg7 correctly loads these E2s with their cognate ubiquitin-like proteins, Atg8 and Atg12. Here, we report the crystal structures of the N-terminal domain of Atg7 bound to Atg10 or Atg3 of thermotolerant yeast and plant homologs. The observed Atg7-Atg10 and Atg7-Atg3 interactions, which resemble each other but are quite distinct from the canonical E1-E2 interaction, makes Atg7 suitable for transferring Atg12 to Atg10 and Atg8 to Atg3 by a trans mechanism. Notably, in vitro experiments showed that Atg7 loads Atg3 and Atg10 with Atg8 and Atg12 in a nonspecific manner, which suggests that cognate conjugate formation in vivo is not an intrinsic quality of Atg7.
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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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