Meiotic recombination is induced by the formation of DNA double-strand breaks (DSBs) catalyzed by SPO11, the ortholog of subunit A of TopoVI DNA topoisomerase (TopoVIA). TopoVI activity requires the interaction between A and B subunits. We identified a conserved family of plant and animal proteins [the TOPOVIB-Like (TOPOVIBL) family] that share strong structural similarity to the TopoVIB subunit of TopoVI DNA topoisomerase. We further characterize the meiotic recombination proteins Rec102 (Saccharomyces cerevisiae), Rec6 (Schizosaccharomyces pombe), and MEI-P22 (Drosophila melanogaster) as homologs to the transducer domain of TopoVIB. We demonstrate that the mouse TOPOVIBL protein interacts and forms a complex with SPO11 and is required for meiotic DSB formation. We conclude that meiotic DSBs are catalyzed by a complex involving SPO11 and TOPOVIBL.
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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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| Evidence ID | Analyze ID | File | Description |
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