Centromeres form specialized chromatin structures termed kinetochores which are required for accurate segregation of chromosomes. DNA lesions might disrupt protein-DNA interactions, thereby compromising segregation and genome stability. We show that yeast centromeres are heavily resistant to removal of UV-induced DNA lesions by two different repair systems, photolyase and nucleotide excision repair. Repair resistance persists in G(1)- and G(2)/M-arrested cells. Efficient repair was obtained only by disruption of the kinetochore structure in a ndc10-1 mutant, but not in cse4-1 and cbf1 Delta mutants. Moreover, UV photofootprinting and DNA repair footprinting showed that centromere proteins cover about 120 bp of the centromere elements CDEII and CDEIII, including 20 bp of flanking CDEIII. Thus, DNA lesions do not appear to disrupt protein-DNA interactions in the centromere. Maintaining a stable kinetochore structure seems to be more important for the cell than immediate removal of DNA lesions. It is conceivable that centromeres are repaired by postreplication repair pathways.
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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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