We have identified a new Saccharomyces cerevisiae gene, HIM1, mapped on the right arm of the chromosome IV (ORF YDR317w), mutations in which led to an increase in spontaneous mutation rate and elevated the frequencies of mutations, induced by UV-light, nitrous acid, ethylmethane sulfonate and methylmethane sulfonate. At the same time, him1 mutation did not result in the increase of the sensitivity to the lethal action of these DNA-damaging agents. We tested the induced mutagenesis in double mutants carrying him1 mutation and mutations in other repair genes: apn1, blocking base excision repair; rad2, rev3, and rad54, blocking three principal DNA repair pathways; pms1, blocking mismatch repair; hsm2 and hsm3 mutations, which lead to a mutator effect. Epistatic analysis showed a synergistic interaction of him1 with pms1, apn1, and rad2 mutations, and epistasis with the rev3, the rad54, the hsm2, and the hsm3. To elucidate the role of the HIM1 in control of spontaneous mutagenesis, we checked the repair of DNA mispaired bases in the him1 mutant and discovered that it was not altered in comparison to the wild-type strain. In our opinion, our results suggest that HIM1 gene participates in the control of processing of mutational intermediates appearing during error-prone bypass of DNA damage.
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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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