During autophagy induction in Saccharomyces cerevisiae, over twenty autophagy-related (Atg) proteins localize to the site of autophagosome formation to generate the pre-autophagosomal structure (PAS), where phase-separated condensates of the Atg1 kinase complex serve as a scaffold for recruiting other Atg proteins. The lipid transfer protein Atg2 forms a complex with the phosphatidylinositol 3-phosphate (PI3P)-binding protein Atg18 and mediates lipid influx from the endoplasmic reticulum to the PAS for membrane expansion. In this study, we discover that the Atg2-Atg18 complex interacts with the Atg1 complex. This interaction involves the C-terminal regions of Atg2 and the Atg1 complex subunit Atg29, and is enhanced by Atg1-dependent phosphorylation of Atg29. This interaction, together with Atg18 binding to PI3P, promotes PAS localization of the Atg2-Atg18 complex. These findings provide new insight into PAS organization and highlight the Atg1 complex as a central hub coordinating Atg protein assembly during autophagosome formation.
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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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