The recognition of DNA double-stranded breaks or single-stranded DNA gaps as a precondition for cell cycle checkpoint arrest has been well established. However, how bulky base damage such as UV-induced pyrimidine dimers elicits a checkpoint response has remained elusive. Nucleotide excision repair represents the main pathway for UV dimer removal that results in strand interruptions. However, we demonstrate here that Rad53p hyperphosphorylation, an early event of checkpoint signaling in Saccharomyces cerevisiae, is independent of nucleotide excision repair (NER), even if replication as a source of secondary DNA damage is excluded. Thus, our data hint at primary base damage or at UV damage (primary or secondary) that does not need to be processed by NER as the relevant substrate of damage-sensing checkpoint proteins.
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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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