A mitotic CDK5-PP4 phospho-signaling cascade primes 53BP1 for DNA repair in G1.
A mitotic CDK5-PP4 phospho-signaling cascade primes 53BP1 for DNA repair in G1.
复制标题
有丝分裂 CDK5-PP4 磷酸信号级联启动 53BP1 进行 G1 期 DNA 修复。
DOI:
10.1038/s41467-019-12084-x
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发表时间:
2019
影响因子:
16.6
通讯作者:
Chowdhury,Dipanjan
中科院分区:
文献类型:
--
作者:
Zheng,Xiao-Feng;Acharya,SanketS;Choe,KatherineN;Nikhil,Kumar;Adelmant,Guillaume;Satapathy,ShaktiRanjan;Sharma,Samanta;Viccaro,Keith;Rana,Sandeep;Natarajan,Amarnath;Sicinski,Peter;Marto,JarrodA;Shah,Kavita;Chowdhury,Dipanjan
Mitotic cells attenuate the DNA damage response (DDR) by phosphorylating 53BP1, a critical DDR mediator, to prevent its localization to damaged chromatin. Timely dephosphorylation of 53BP1 is critical for genome integrity, as premature recruitment of 53BP1 to DNA lesions impairs mitotic fidelity. Protein phosphatase 4 (PP4) dephosphorylates 53BP1 in late mitosis to allow its recruitment to DNA lesions in G1. How cells appropriately dephosphorylate 53BP1, thereby restoring DDR, is unclear. Here, we elucidate the underlying mechanism of kinetic control of 53BP1 dephosphorylation in mitosis. We demonstrate that CDK5, a kinase primarily functional in post-mitotic neurons, is active in late mitotic phases in non-neuronal cells and directly phosphorylates PP4R3β, the PP4 regulatory subunit that recognizes 53BP1. Specific inhibition of CDK5 in mitosis abrogates PP4R3β phosphorylation and abolishes its recognition and dephosphorylation of 53BP1, ultimately preventing the localization of 53BP1 to damaged chromatin. Our results establish CDK5 as a regulator of 53BP1 recruitment.
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DOI:
10.1083/jcb.103.2.613
发表时间:
1986-08
期刊:
The Journal of cell biology
影响因子:
--
作者:
Klotz C;Bordes N;Laine MC;Sandoz D;Bornens M
通讯作者:
Bornens M
影响因子:
3.5
作者:
Delous M;Hellman NE;Gaudé HM;Silbermann F;Le Bivic A;Salomon R;Antignac C;Saunier S
通讯作者:
Saunier S
影响因子:
3.4
作者:
Vaughan,DK;Fisher,SK
通讯作者:
Fisher,SK
影响因子:
3.9
作者:
J. Hesketh;N. Virmaux;D. Aunis
通讯作者:
D. Aunis
影响因子:
7.8
作者:
Burnside, B
通讯作者:
Burnside, B