Degrees make all the difference: the multifunctionality of histone H4 lysine 20 methylation.

Degrees make all the difference: the multifunctionality of histone H4 lysine 20 methylation.
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DOI:
10.4161/epi.4.5.9212
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发表时间:
2009-07-01
期刊:
影响因子:
3.7
通讯作者:
Jia S
Jia S
中科院分区:
生物学3区
文献类型:
--
作者:
Wang Y;Jia S

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组蛋白赖氨酸沿着的残基和程度特异性甲基化以及其他表观遗传修饰将染色质组织成不同的结构域,并调节DNA代谢的几乎每个方面。组蛋白甲基转移酶和脱甲基酶以及识别甲基化赖氨酸的蛋白质的鉴定已经阐明了每个甲基化事件在调节不同生物学途径中的作用。组蛋白H4赖氨酸20(H4K20me)的甲基化在基因表达、细胞周期进展和DNA损伤修复等多种细胞过程中起着关键作用,其中三种甲基化程度(单甲基化、二甲基化和三甲基化)中的每一种都做出了独特的贡献。在这里,我们讨论了最近的研究H4K20me,大大提高了我们对这个迷人的组蛋白修饰的调节和功能的理解。
Residue and degree-specific methylation of histone lysines along with other epigenetic modifications organizes chromatin into distinct domains and regulates almost every aspect of DNA metabolism. Identification of histone methyltransferases and demethylases, as well as proteins that recognize methylated lysines, has clarified the role of each methylation event in regulating different biological pathways. Methylation of histone H4 lysine 20 (H4K20me) plays critical roles in diverse cellular processes such as gene expression, cell cycle progression and DNA damage repair, with each of the three degrees of methylation (mono-, di- and tri-methylation) making a unique contribution. Here we discuss recent studies of H4K20me that have greatly improved our understanding of the regulation and function of this fascinating histone modification.
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