Two temperature-sensitive DNA polymerase II mutants (pol2-9 and pol2-18) of the yeast Saccharomyces cerevisiae were isolated by the plasmid shuffling method. DNA polymerase II activity partially purified from both mutants was thermolabile, while DNA polymerase I and III activities remained thermotolerant. At the restrictive temperature, the pol2 mutants were defective in chromosomal DNA replication and exhibited the dumbbell terminal morphology typical of DNA replication mutants. The POL2 transcript accumulated periodically during the cell cycle, peaking at the G1/S boundary in the same manner as the transcripts of more than 10 other DNA replication genes. These results indicate that DNA polymerase II participates in nuclear DNA replication. The similarities in structure and activities between the DNA polymerases of yeast and mammals make it likely that mammalian DNA polymerase epsilon too is required for chromosomal DNA replication.
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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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