Lagging-strand and leading-strand synthesis of chromosomes generates two structurally distinct ends at the telomeres. Based on sequence bias of yeast telomeres that contain a 250-300 bp array of C(1-3)A/ TG(1-3) repeats, we developed a method allowing us to distinguish which of the two daughter telomeres chromosome end-binding proteins bind to at the end of S phase. The single-stranded DNA-binding protein Cdc13 and the telomerase subunits Est1 and Est2 can bind to the two daughter telomeres, but only their binding to the leading-strand telomere depends on the Mre11/Rad50/Xrs2 (MRX) complex involved in both telomeric 5' nucleolytic resection and telomerase recruitment at short telomeres. Consistently, the MRX complex is mainly found to bind to the leading-strand telomere. Our results indicate that Cdc13 can bind to the telomeric template for lagging-strand replication. Since mre11-deficient strains have markedly short telomeres, telomere elongation by telomerase is likely to occur mainly at the leading-strand telomere.
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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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