The macrodomain family: Rethinking an ancient domain from evolutionary perspectives

The macrodomain family: Rethinking an ancient domain from evolutionary perspectives
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宏域家族:从进化的角度重新思考一个古老的领域

DOI:
10.1007/s11434-013-5674-9
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发表时间:
2013-03
影响因子:
--
通讯作者:
Han WeiDong
Han WeiDong
中科院分区:
--
文献类型:
--
作者:
Li XiaoLei;Wu ZhiQiang;Han WeiDong

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为什么某些领域的进化比其他领域慢得多,原因尚不清楚。功能上更重要的基因比不太重要的基因进化得更慢的概念是少数被普遍认为的分子进化原则之一。宏结构域(也称为X结构域)是一个古老的,缓慢进化和高度保守的结构域,在所有王国的蛋白质中发现,并在近二十年前首次发现,分离和克隆macroH2A1。功能混杂的宏结构域由于其在调节细胞对DNA损伤、染色质重塑、转录和肿瘤发生的反应中的重要性而在过去十年中被深入研究。然而,最近的结构,系统发育和生物学分析表明,有必要重新考虑的进化优势集中到宏域和宏域如何可以执行这么多的功能,这样一个过多的不同功能。在这篇文章中,我们将重点放在宏结构域的进化缓慢和广泛的生物进化和功能多样性的宏结构域之间的潜在关系进行了讨论。
The reasons why certain domains evolve much slower than others is unclear. The notion that functionally more important genes evolve more slowly than less important genes is one of the few commonly believed principles of molecular evolution. The macro-domain (also known as the X domain) is an ancient, slowly evolving and highly conserved structural domain found in proteins throughout all of the kingdoms and was first discovered nearly two decades ago with the isolation and cloning ofmacroH2A1. Macrodomains, which are functionally promiscuous, have been studied intensively for the past decade due to their importance in the regulation of cellular responses to DNA damage, chromatin remodeling, transcription and tumorigenesis. Recent structural, phylogenetic and biological analyses, however, suggest the need for some reconsideration of the evolutionary advantage of concentrating such a plethora of diverse functions into the macrodomain and of how macrodomains could perform so many functions. In this article, we focus on macrodomains that are evolving slowly and broadly discuss the potential relationship between the biological evolution and functional diversity of macrodomains.
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