CK2 kinase-mediated PHF8 phosphorylation controls TopBP1 stability to regulate DNA replication.
CK2 kinase-mediated PHF8 phosphorylation controls TopBP1 stability to regulate DNA replication.
复制标题
CK2激酶介导的PHF8磷酸化控制TopBP 1稳定性以调节DNA复制。
DOI:
10.1093/nar/gkaa756
复制
发表时间:
2020-11-04
影响因子:
14.9
通讯作者:
Gong Z
中科院分区:
文献类型:
--
作者:
Feng H;Lu J;Song X;Thongkum A;Zhang F;Lou L;Reizes O;Almasan A;Gong Z
ATR functions as a master regulator of the DNA-damage response. ATR activation requires the ATR activator, topoisomerase IIβ-binding protein 1 (TopBP1). However, the underlying mechanism of TopBP1 regulation and how its regulation affects DNA replication remain unknown. Here, we report a specific interaction between TopBP1 and the histone demethylase PHF8. The TopBP1/PHF8 interaction is mediated by the BRCT 7+8 domain of TopBP1 and phosphorylation of PHF8 at Ser854. This interaction is cell-cycle regulated and phosphorylation-dependent. PHF8 is phosphorylated by CK2, which regulates binding of PHF8 to TopBP1. Importantly, PHF8 regulates TopBP1 protein level by preventing its ubiquitination and degradation mediated by the E3 ligase UBR5. Interestingly, PHF8pS854 is likely to contribute to regulation of TopBP1 stability and DNA replication checkpoint. Further, both TopBP1 and PHF8 are required for efficient replication fork restart. Together, these data identify PHF8 as a TopBP1-binding protein and provide mechanistic insight into how PHF8 regulates TopBP1 stability to maintain DNA replication.
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影响因子:
16
作者:
Liu S;Shiotani B;Lahiri M;Maréchal A;Tse A;Leung CC;Glover JN;Yang XH;Zou L
通讯作者:
Zou L
影响因子:
16
作者:
Gong, Zihua;Kim, Ja-Eun;Leung, Charles Chung Yun;Glover, J. N. Mark;Chen, Junjie
通讯作者:
Chen, Junjie
影响因子:
4.8
作者:
Khan, Dilshad H.;He, Shihua;Davie, James R.
通讯作者:
Davie, James R.
DOI:
10.1073/pnas.0506791102
发表时间:
2005-10-25
影响因子:
11.1
作者:
Homma, MK;Wada, I;Homma, Y
通讯作者:
Homma, Y
影响因子:
16
作者:
Kleine-Kohlbrecher D;Christensen J;Vandamme J;Abarrategui I;Bak M;Tommerup N;Shi X;Gozani O;Rappsilber J;Salcini AE;Helin K
通讯作者:
Helin K