Spindle disassembly at the end of mitosis is a complex and poorly understood process. Here, we report that the AAA-ATPase Cdc48/p97 and its adapters Ufd1-Npl4, which have a well-established role in membrane functions, also regulate spindle disassembly by modulating microtubule dynamics and bundling at the end of mitosis. In the absence of p97-Ufd1-Npl4 function, microtubules in Xenopus egg extracts remain as monopolar spindles attached to condensed chromosomes after Cdc2 kinase activity has returned to the interphase level. Consequently, interphase microtubule arrays and nuclei are not established. Genetic analyses of Cdc48, the yeast homolog of p97, reveal that Cdc48 is also required for disassembly of mitotic spindles after execution of the mitotic exit pathway. Furthermore, Cdc48/p97-Ufd1-Npl4 directly binds to spindle assembly factors and regulates their interaction with microtubules at the end of mitosis. Therefore, Cdc48/p97-Ufd1-Npl4 is an essential chaperone that regulates transformation of the microtubule structure as cells reenter interphase.
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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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