Centrosomes (spindle pole body in yeast) constitute the two poles of the bipolar mitotic spindle and play a prominent role in the segregation of chromosomes during mitosis. Like chromosomes, the centrosome inherited from the progenitor cell duplicates once in each division cycle, following which the sister centrosomes segregate away from each other to assemble a short spindle upon initiation of mitosis. Cdh1, an activator of the E3 ubiquitin ligase APC (Anaphase Promoting Complex), is a potent inhibitor of centrosome segregation and suppresses spindle assembly during S phase by mediating proteolytic destruction of the microtubule associated proteins (MAPs) required for centrosome separation. A recent study in yeast suggests that concerted action by two prominent kinases Cdk1 and polo are required to bring this destruction to a halt by inactivating Cdh1 and to facilitate spindle assembly. This is an effective strategy for the modulation of the activities of cell cycle regulators that require multiple phosphorylation. The control circuit involving Cdh1, Cdk1, Polo and MAPs may be also targeted by other cellular networks in contexts that demand the restraining of spindle dynamics.
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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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