CRL4(Cdt2)-mediated destruction of the histone methyltransferase Set8 prevents premature chromatin compaction in S phase.

CRL4(Cdt2)-mediated destruction of the histone methyltransferase Set8 prevents premature chromatin compaction in S phase.
复制标题

DOI:
10.1016/j.molcel.2010.09.015
复制
发表时间:
2010-10-08
期刊:
影响因子:
16
通讯作者:
Zou L
Zou L
中科院分区:
生物学1区
文献类型:
--
作者:
Centore RC;Havens CG;Manning AL;Li JM;Flynn RL;Tse A;Jin J;Dyson NJ;Walter JC;Zou L

文献摘要

参考文献

被引文献

相似文献

在细胞周期进程中DNA复制和有丝分裂之间的适当协调对于基因组稳定性至关重要。在G2和有丝分裂期间,Set8催化组蛋白H4在赖氨酸20(H4K20me1)上的单甲基化,这促进染色质致密化。Set8水平在S期下降,但为什么以及如何发生尚不清楚。在这里,我们表明,Set8的目标是在S期蛋白水解和响应DNA损伤的E3泛素连接酶,CRL 4Cdt2。Set8泛素化发生在染色质上,并通过Set8中结合PCNA的特异性降解决定子与DNA复制偶联。CRL4Cdt2的失活导致Set8稳定化和复制细胞中异常的H4K20me1积累。缺乏降解决定子的Set8突变体的瞬时S期表达促进过早的H4K20me1积累和染色质致密化,并触发检查点介导的G2停滞。因此,S期Set8的CRL4Cdt2依赖性破坏通过防止DNA合成期间异常的染色质压实来保持基因组稳定性。
The proper coordination between DNA replication and mitosis during cell cycle progression is crucial for genomic stability. During G2 and mitosis, Set8 catalyzes monomethylation of histone H4 on lysine 20 (H4K20me1), which promotes chromatin compaction. Set8 levels decline in S phase, but why and how this occurs is unclear. Here, we show that Set8 is targeted for proteolysis in S phase and in response to DNA damage by the E3 ubiquitin ligase, CRL4Cdt2. Set8 ubiquitylation occurs on chromatin, and is coupled to DNA replication via a specific degron in Set8 that binds PCNA. Inactivation of CRL4Cdt2 leads to Set8 stabilization and aberrant H4K20me1 accumulation in replicating cells. Transient S phase expression of a Set8 mutant lacking the degron promotes premature H4K20me1 accumulation and chromatin compaction, and triggers a checkpoint-mediated G2 arrest. Thus, CRL4Cdt2-dependent destruction of Set8 in S phase preserves genome stability by preventing aberrant chromatin compaction during DNA synthesis.
DOI: 10.1074/jbc.c500464200
发表时间: 2006-02-17
影响因子: 4.8
作者:
Hu, J;Xiong, Y
通讯作者: Xiong, Y
DOI: 10.1074/jbc.m710579200
发表时间: 2008-07-11
影响因子: 4.8
作者:
Houston, Sabrina I.;McManus, Kirk J.;Rice, Judd C.
通讯作者: Rice, Judd C.
DOI: 10.1016/s0960-9822(02)00924-7
发表时间: 2002-07-09
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Fang, J;Feng, Q;Zhang, Y
通讯作者: Zhang, Y
DOI: 10.1016/s1097-2765(02)00548-8
发表时间: 2002-06-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
Nishioka, K;Rice, JC;Reinberg, D
通讯作者: Reinberg, D
DOI: 10.1083/jcb.200706150
发表时间: 2007-12-31
期刊: The Journal of cell biology
影响因子: --
作者:
Jørgensen S;Elvers I;Trelle MB;Menzel T;Eskildsen M;Jensen ON;Helleday T;Helin K;Sørensen CS
通讯作者: Sørensen CS