Yeast bleomycin hydrolase, Gal6p, is a cysteine peptidase that detoxifies the anticancer drug bleomycin. Gal6p is a dual-function protein capable of both nucleic acid binding and peptide cleavage. We now demonstrate that Gal6p exhibits sequence-independent, high-affinity binding to single-stranded DNA, nicked double-stranded DNA, and RNA. A region of the protein that is involved in binding both RNA and DNA substrates is delineated. Immunolocalization reveals that the Gal6 protein is chiefly cytoplasmic and thus may be involved in binding cellular RNAs. Variant Gal6 proteins that fail to bind nucleic acid also exhibit reduced ability to protect cells from bleomycin toxicity, suggesting that the nucleic acid binding activity of Gal6p is important in bleomycin detoxification and may be involved in its normal biological functions.
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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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