Inactive yet indispensable: the tale of Jarid2.

Inactive yet indispensable: the tale of Jarid2.
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DOI:
10.1016/j.tcb.2010.10.004
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发表时间:
2011-02
影响因子:
19
通讯作者:
Fisher, Amanda G.
Fisher, Amanda G.
中科院分区:
生物学1区
文献类型:
--
作者:
Landeira, David;Fisher, Amanda G.

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组蛋白尾部的甲基化被认为对于发育过程中基因表达程序的建立和遗传非常重要。Jarid2/ Jumonji是具有组蛋白去甲基化酶活性的染色质修饰因子家族的创始成员。尽管Jarid2包含被认为会使其催化活性丧失的氨基酸替换,但它对小鼠多个器官的发育至关重要。最近的研究表明,Jarid2是多梳抑制复合物2的一个组成部分,并且是胚胎干细胞(ES)分化所必需的。在此,我们讨论了有关Jarid2功能的现有文献,并假设Jarid2缺失所导致的缺陷源于未能正确启动胚胎干细胞中发育后期所需的基因。
Methylation of histone tails is believed to be important for the establishment and inheritance of gene expression programs during development. Jarid2/Jumonji is the founding member of a family of chromatin modifiers with histone demethylase activity. Although Jarid2 contains amino acid substitutions that are thought to abolish its catalytic activity, it is essential for the development of multiple organs in mice. Recent studies have shown that Jarid2 is a component of the polycomb repressive complex 2 and is required for embryonic stem (ES) cell differentiation. Here, we discuss current literature on the function of Jarid2 and hypothesize that defects resulting from Jarid2 deficiency arise from a failure to correctly prime genes in ES cells that are required for later stages in development.
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