We have recently completed a large mutant screen designed to identify new mutants of Saccharomyces cerevisiae with a telomerase-like defect. From this screen; 22 mutants were identified that mapped to three genes, called EST1, EST2 and EST3, as well as a novel EST-like mutation in a fourth gene, previously identified as CDC13. Mutations in each of these genes give rise to phenotypes that are indistinguishable from those observed when TLC1, encoding the yeast telomerase RNA, is deleted. In addition, genetic analysis indicates that all four genes function in the same pathway for telomere replication as defined by TLC1, the one known component of telomerase. This indicates that these genes encode factors that are essential in vivo for telomerase function. Genetic and biochemical analyses have shown that EST1 and CDC13 encode single-stranded telomeric DNA-binding proteins, suggesting that these two proteins may function to mediate access of telomerase to the end of the 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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