Meiotic homologous pairing is crucial to proper homologous recombination, which secures subsequent reductional chromosome segregation. We have identified a novel meiosis-specific protein of fission yeast Schizosaccharomyces pombe, Meu13p, to be a molecule that is required for proper homologous pairing and recombination. Rec12p (homologue of Saccharomyces cerevisiae Spo11p), which is essential for the initiation of meiotic recombination, is also shown for the first time to participate in the pairing process of S.pombe. Meu13p, however, contributes to pairing through a recombination-independent mechanism, as disruption of the meu13(+) gene reduces pairing whether the rec12(+) gene is deleted or not. We also demonstrate a dynamic nature of homologous pairing in living meiotic cells, which is markedly affected by meu13 deletion. Meu13p is not required for telomere clustering and the nuclear movement process, which are well known requirements for efficient pairing in S.pombe. Based on these results, together with the localization of Meu13p on meiotic chromatin, we propose that Meu13p directly promotes proper homologous pairing and recombination.
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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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