In Saccharomyces cerevisiae, the initiation of DNA replication and mitotic progression requires SKP1p function. SKP1p is an essential subunit of a newly identified class of E3 ubiquitin protein ligases, the SCF complexes, that catalyze ubiquitin-mediated proteolysis of key cell-cycle-regulatory proteins at distinct times in the cell cycle. SKP1p is also required for proper kinetochore assembly. Little is known about the corresponding human homolog, p19(SKP1), except that it is expressed throughout the cell cycle and that it too is a component of an S-phase-regulating SCF-E3 ligase complex. Here we show by immunofluorescence microscopy that p19(SKP1) localizes to the centrosomes. Centrosome association occurs throughout the mammalian cell cycle, including all stages of mitosis. These findings suggest that p19(SKP1) is a novel component of the centrosome and the mitotic spindle, which, in turn, implies a physiological role of this protein in the regulation of one or more aspects of the centrosome cycle.
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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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