The Cdc14B-Cdh1-Plk1 axis controls the G2 DNA-damage-response checkpoint.
The Cdc14B-Cdh1-Plk1 axis controls the G2 DNA-damage-response checkpoint.
复制标题
DOI:
10.1016/j.cell.2008.05.043
复制
发表时间:
2008-07-25
期刊:
影响因子:
64.5
通讯作者:
Pagano, Michele
中科院分区:
文献类型:
--
作者:
Bassermann, Florian;Frescas, David;Guardavaccaro, Daniele;Busino, Luca;Peschiaroli, Angelo;Pagano, Michele
In response to DNA damage in G2, mammalian cells must avoid entry into mitosis and instead initiate DNA repair. Here we show that in response to genotoxic stress in G2, the phosphatase Cdc14B translocates from the nucleolus to the nucleoplasm and induces the activation of the ubiquitin ligase APC/CCdh1, with the consequent degradation of Plk1, a prominent mitotic kinase. This process induces the stabilization of Claspin and Wee1, as the proteolysis of these two proteins requires phosphorylation by Plk1, and allows an efficient G2 checkpoint. As a by-product of APC/CCdh1 reactivation in DNA-damaged G2 cells, Claspin, which we show to be a novel substrate of APC/CCdh1 in G1, is targeted for degradation. However, this process is counteracted by the deubiquitylating enzyme Usp28 to permit Claspin-mediated activation of Chk1 in response to DNA damage. These findings define a novel pathway that is crucial for the G2 DNA damage response checkpoint.
登录
查看更多内容
DOI:
10.1083/jcb.200309035
发表时间:
2004-01-19
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lindon C;Pines J
通讯作者:
Pines J
DOI:
10.1073/pnas.0307700101
发表时间:
2004-03-30
影响因子:
11.1
作者:
Watanabe, N;Arai, H;Osada, H
通讯作者:
Osada, H
影响因子:
10.5
作者:
Jin, JP;Shirogane, T;Harper, JW
通讯作者:
Harper, JW
影响因子:
21.3
作者:
Mailand, N;Lukas, C;Lukas, J
通讯作者:
Lukas, J
影响因子:
9.2
作者:
Mamely, Ivan;van Vugt, Marcel A. T. M.;Freire, Raimundo
通讯作者:
Freire, Raimundo