Cdc14-like phosphatases regulate a variety of cell cycle events by dephosphorylating CDK sites. Their cell cycle-dependent changes in localization may be important to carry out distinct functions. Work in budding and fission yeast suggested that Cdc14-like phosphatases are inhibited by nucleolar sequestration. In S. cerevisiae, Cdc14p is released from the nucleolus by the FEAR network and Cdk1, whereas the S. pombe CDC14-like phosphatase Clp1p (also known as Flp1p) is released at mitotic entry by an unknown mechanism. The mitotic exit network (MEN) in S. cerevisiae and its homologous network, the septation initiation network (SIN), in S. pombe act through an unknown mechanism to keep the phosphatase out of the nucleolus in late mitosis. SIN-dependent cytoplasmic maintenance of Clp1p is thought to be essential for the cytokinesis checkpoint, which blocks further rounds of nuclear division until cytokinesis is completed. By targeting Clp1p to the nucleus or the cytoplasm, we demonstrate distinct functions for these pools of Clp1p in chromosome segregation and cytokinesis, respectively. Our results further suggest that the SIN does not keep Clp1p out of the nucleolus by regulating nucleolar affinity, as proposed for S. cerevisiae Cdc14p, but instead, Clp1p may be regulated by nuclear import/export.
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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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