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Supernumerary centrosomes promote the assembly of abnormal spindles in many human cancers. The observation that modest changes in the centrosomal levels of Mps1 kinase can cause centrosome overduplication in human cells suggests the existence of a regulatory system that may tightly control its centrosomal stability. Here, we show that Cdkn3, a Cdk-associated phosphatase, prevents Mps1-mediated centrosome...
The chromosome passenger complex (CPC) must relocate from anaphase chromosomes to the cell equator for successful cytokinesis. Although this landmark event requires the mitotic kinesin MKlp2, the spatiotemporal mechanistic basis remains elusive. Here, we show that phosphoregulation of MKlp2 by the mitotic kinase Cdk1/cyclin B1 coordinates proper mitotic transition with CPC relocation. We identified...
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