The proliferating cell nuclear antigen (PCNA) acts as a processivity factor for replicative DNA polymerases and is essential for DNA replication. In vitro studies have suggested a role for PCNA-in the repair synthesis step of nucleotide excision repair, and PCNA interacts with the cyclin-dependent kinase inhibitor p21. However, because of the lack of genetic evidence, it is not clear which of the DNA repair processes are in fact affected by PCNA in vivo. Here, we describe a PCNA mutation, pol30-46, that confers ultraviolet (UV) sensitivity but has no effect on growth or cell cycle progression, and the mutant pcna interacts normally with DNA polymerase delta and epsilon. Genetic studies indicate that the pol30-46 mutation is specifically defective in RAD6-dependent postreplicational repair of UV damaged DNA, and this mutation impairs the error-free mode of bypass repair. These results implicate a role for PCNA as an intermediary between DNA replication and postreplicational DNA repair.
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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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