The phosphoinositide (PI)-3-kinase-related kinase (PIKK) family proteins Tel1p and Mec1p have been implicated in the telomere integrity of Saccharomyces cerevisiae. However, the mechanism of PIKK-mediated telomere length control remains unclear. Here, we show that Tel1p and Mec1p are recruited to the telomeres at specific times in the cell cycle in a mutually exclusive manner. In particular, Mec1p interacts with the telomeres during late S phase and is associated preferentially with shortened telomeres. We propose a model in which telomere integrity is maintained by the reciprocal association of PIKKs, and Mec1p acts as a sensor for structural abnormalities in the telomeres. Our study suggests a mechanistic similarity between telomere length regulation and DNA double-strand break repair, both of which are achieved by the direct association of PIKKs.
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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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