The target of rapamycin complex 1 (TORC1) protein kinase plays an important role in regulating various cellular activities in response to nutrient availability. In this study, an autophagy-related protein 8 (atg8) mutant of Saccharomyces cerevisiae was highly sensitive to cellular processes in which TORC1 activity was inhibited by rapamycin treatment or by a mutated allele of KOG1 which encodes a subunit of TORC1. Atg8 exhibits both lipidation-dependent and -independent activities, each involving distinct factors. Lipidation of Atg8 is necessary for autophagy and functions with autophagy-related proteins like Atg7, whereas the lipidation-independent activities of Atg8 require Hfl1. The atg7Δhfl1Δ double mutant exhibited defects for the impaired TORC1 activities, suggesting that both lipidation-dependent and -independent functions of Atg8 are required for survival during impaired TORC1 activity. Moreover, atg8Δ and atg7Δhfl1Δ mutants exhibited sensitivity to metal ion Zn2+ during low-dose rapamycin treatment. The results suggest that Atg8-mediated functions and TORC1 signaling events play an important role in cell growth, possibly by maintaining vacuole integrity.
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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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