Cyclin-dependent protein kinases (CDKs) are required for various cell cycle events both in mitosis and in meiosis. During the meiotic prophase of Saccharomyces cerevisiae, only one CDK, Cdc28, which forms a complex with B-type cyclins, Clb5 or Clb6, promotes not only the onset of premeiotic DNA replication but also the formation of meiotic double-strand breaks (DSBs). In this study, we showed that Cdc28 exhibits punctate staining on chromosomes during meiotic prophase I. Chromosomal localization of Cdc28, dependent on Clb5 and/or Clb6, is frequently observed in zygotene and pachytene, when formation of the synaptonemal complex (SC) occurs. Interestingly, the CDK localization is independent of DSB formation, but rather dependent on meiosis-specific chromosome components such as Red1, Hop1 and a cohesin subunit Rec8. Compromised CDK activity in meiotic prophase leads to defective SC formation without affecting DSB formation. These results suggest that CDK-dependent phosphorylation regulates meiotic chromosome morphogenesis.
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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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