Cep152 interacts with Plk4 and is required for centriole duplication

被引:209
作者
Hatch, Emily M. [1 ]
Kulukian, Anita [1 ]
Holland, Andrew J. [3 ,4 ]
Cleveland, Don W. [3 ,4 ]
Stearns, Tim [1 ,2 ]
机构
[1] Stanford Univ, Dept Biol, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Genet, Stanford, CA 94305 USA
[3] Univ Calif San Diego, Ludwig Inst Canc Res, La Jolla, CA 92093 USA
[4] Univ Calif San Diego, Dept Cellular & Mol Med, La Jolla, CA 92093 USA
基金
美国国家卫生研究院;
关键词
CENTROSOME DUPLICATION; CELL-CYCLE; C-ELEGANS; GAMMA-TUBULIN; IN-VITRO; DROSOPHILA; EMBRYO; OVERDUPLICATION; INSTABILITY; ASTERLESS;
D O I
10.1083/jcb.201006049
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Centrioles are microtubule based structures that organize the centrosome and nucleate cilia Centrioles duplicate once per cell cycle, and duplication requires P1k4, a member of the Polo like kinase family, however, the mechanism linking Plk4 activity and centriole formation is unknown In this study, we show in human and frog cells that Plk4 interacts with the centrosome protein Cep152, the orthologue of Drosophila melanogaster Asterless The interaction requires the N terminal 217 residues of Cep152 and the crypto Polo box of Plk4 Cep152 and P1k4 colocalize at the centriole throughout the cell cycle Overexpression of Cep152 (1-217) mislocalizes P1k4, but both Cep152 and P1k4 are able to localize to the centriole independently of the other Depletion of Cep152 prevents both normal centriole duplication and Plk4-induced centriole amplification and results in a failure to localize Sas6 to the centriole, an early step in duplication Cep152 can be phosphorylated by P1k4 in vitro, suggesting that Cep152 acts with P1k4 to initiate centriole formation
引用
收藏
页码:721 / 729
页数:9
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