Aurora-B mediated ATM serine 1403 phosphorylation is required for mitotic ATM activation and the spindle checkpoint.
Aurora-B mediated ATM serine 1403 phosphorylation is required for mitotic ATM activation and the spindle checkpoint.
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DOI:
10.1016/j.molcel.2011.09.016
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发表时间:
2011-11-18
期刊:
影响因子:
16
通讯作者:
Xu, Bo
中科院分区:
文献类型:
--
作者:
Yang, Chunying;Tang, Xi;Guo, Xiaojing;Niikura, Yohei;Kitagawa, Katsumi;Cui, Kemi;Wong, Stephen T. C.;Fu, Li;Xu, Bo
The ATM kinase plays a critical role in the maintenance of genetic stability. ATM is activated in response to DNA damage and is essential for cell cycle checkpoints. Here, we report that ATM is activated in mitosis in the absence of DNA damage. We demonstrate that mitotic ATM activation is dependent on the Aurora-B kinase and that Aurora-B phosphorylates ATM on serine 1403. This phosphorylation event is required for mitotic ATM activation. Further, we show that loss of ATM function results in shortened mitotic timing and a defective spindle checkpoint, and that abrogation of ATM Ser1403 phosphorylation leads to this spindle checkpoint defect. We also demonstrate that mitotically-activated ATM phosphorylates Bub1, a critical kinetochore protein, on Ser314. ATM-mediated Bub1 Ser314 phosphorylation is required for Bub1 activity and is essential for the activation of the spindle checkpoint. Collectively, our data highlight mechanisms of a critical function of ATM in mitosis.
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影响因子:
3.6
作者:
Cariveau, Mickael J.;Tang, Xi;Xu, Bo
通讯作者:
Xu, Bo
DOI:
10.1083/jcb.200706015
发表时间:
2007-10-22
期刊:
The Journal of cell biology
影响因子:
--
作者:
Jeganathan K;Malureanu L;Baker DJ;Abraham SC;van Deursen JM
通讯作者:
van Deursen JM
DOI:
10.1016/j.cub.2009.05.057
发表时间:
2009-07-14
期刊:
Current biology : CB
影响因子:
--
作者:
Ayoub N;Rajendra E;Su X;Jeyasekharan AD;Mahen R;Venkitaraman AR
通讯作者:
Venkitaraman AR
影响因子:
56.9
作者:
Lee, JH;Paull, TT
通讯作者:
Paull, TT
影响因子:
64.5
作者:
Dobles, M;Liberal, V;Sorger, PK
通讯作者:
Sorger, PK