The yeast single-strand TG-repeat telomere binding protein Cdc13 and the telomerase accessory protein Est1 play essential roles in chromosome end replication. To determine whether a proposed Cdc13-Est1 interaction recruits telomerase (Est2), we used a simplified system in which telomere formation was monitored at an HO-induced DNA double-strand break (DSB). Tethering of either Cdc13 or Est1 adjacent to a DSB promoted telomere formation, and tethering of Est1, even in the absence of a DSB, resulted in the recruitment of Est2. Est1 association with a DSB containing an adjacent short TG-repeat sequence depended on the Cdc13-Est1 interaction affected by cdc13-2 and est1-60 mutations, whereas Cdc13 association did not. Similarly, Est2 binding to the DSB also required the Cdc13-Est1 interaction, but not synthesis of new TG repeats at the break site. These data demonstrate a critical role for Est1 in recruiting telomerase to its site of action, in cooperation with the telomere binding protein Cdc13.
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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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