Binding of STIL to Plk4 activates kinase activity to promote centriole assembly.
Binding of STIL to Plk4 activates kinase activity to promote centriole assembly.
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DOI:
10.1083/jcb.201502088
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发表时间:
2015-06-22
期刊:
影响因子:
--
通讯作者:
Holland AJ
中科院分区:
文献类型:
--
作者:
Moyer TC;Clutario KM;Lambrus BG;Daggubati V;Holland AJ
Binding of STIL activates Plk4, and the subsequent phosphorylation of STIL by Plk4 primes the binding of STIL to SAS6 to promote centriole assembly. Centriole duplication occurs once per cell cycle in order to maintain control of centrosome number and ensure genome integrity. Polo-like kinase 4 (Plk4) is a master regulator of centriole biogenesis, but how its activity is regulated to control centriole assembly is unclear. Here we used gene editing in human cells to create a chemical genetic system in which endogenous Plk4 can be specifically inhibited using a cell-permeable ATP analogue. Using this system, we demonstrate that STIL localization to the centriole requires continued Plk4 activity. Most importantly, we show that direct binding of STIL activates Plk4 by promoting self-phosphorylation of the activation loop of the kinase. Plk4 subsequently phosphorylates STIL to promote centriole assembly in two steps. First, Plk4 activity promotes the recruitment of STIL to the centriole. Second, Plk4 primes the direct binding of STIL to the C terminus of SAS6. Our findings uncover a molecular basis for the timing of Plk4 activation through the cell cycle–regulated accumulation of STIL.
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影响因子:
64.5
作者:
Huttlin EL;Jedrychowski MP;Elias JE;Goswami T;Rad R;Beausoleil SA;Villén J;Haas W;Sowa ME;Gygi SP
通讯作者:
Gygi SP
影响因子:
9.2
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Chan JY
通讯作者:
Chan JY
影响因子:
64.8
作者:
Dzhindzhev, Nikola S.;Yu, Quan D.;Glover, David M.
通讯作者:
Glover, David M.
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4
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Guderian, Gernot;Westendorf, Jens;Nigg, Erich A.
通讯作者:
Nigg, Erich A.
影响因子:
10.5
作者:
Holland, Andrew J.;Fachinetti, Daniele;Cleveland, Don W.
通讯作者:
Cleveland, Don W.