Interstrand cross-links (ICL) in DNA arise from bifunctional alkylating agents, including nitrogen mustards, mitomycin C and psoralens. Such adducts prevent normal transcription or replication and are mutagenic. Therefore, cellular mechanisms for removing ICL damage are needed to maintain genome stability. Normal ICL repair requires the action of a number of genes, some specific for such damage. The yeast Snm1 protein is one such protein, but its function has been unknown. Incision for ICL repair is normal in mutants lacking Snm1, so it appears to act after the earliest steps. We have used recombinant SNM1 constructs in an Escherichia coli (E. coli) expression system to demonstrate that the yeast gene encodes a 5'-exonuclease. The exonuclease activity is required for Snm1 to be functional in ICL 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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