The mitotic spindle is a complex and dynamic structure. Although much has been learned about how spindles assemble and mediate chromosome segregation, how spindles rapidly and irreversibly disassemble during telophase is less clear. We used synthetic lethal screens in budding yeast to identify mutants defective in spindle disassembly. Real-time, live cell imaging analysis of spindle disassembly was performed on nine mutants defective in this process. Results of this analysis suggest that spindle disassembly is achieved by mechanistically distinct but functionally overlapping subprocesses: disengagement of the spindle halves, arrest of spindle elongation, and initiation of interpolar microtubule depolymerization. These subprocesses are largely governed by the anaphase-promoting complex, Aurora B kinase, and kinesin-8. Combinatorial inhibition of these subprocesses yielded cells with hyperstable spindle remnants and dramatic defects in cell cycle progression, establishing that rapid spindle disassembly is crucial for cell proliferation.
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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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