The Inherent Asymmetry of DNA Replication.

The Inherent Asymmetry of DNA Replication.
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DOI:
10.1146/annurev-cellbio-100616-060447
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发表时间:
2017-10-06
影响因子:
11.3
通讯作者:
Chen X
Chen X
中科院分区:
生物学1区
文献类型:
--
作者:
Snedeker J;Wooten M;Chen X

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我们对DNA结构的理解有助于为理解DNA复制机制的巨大进步铺平道路。半保守性DNA复制为生命如何能够以允许细胞、生物体和种群多次存活和复制的方式增殖这一基本问题提供了一个优雅的解决方案。然而,在我们对这种优雅的机制的钦佩中,我们对DNA复制过程中不可避免地发生的不对称性的理解有些失落。正如我们将在这篇评论中讨论的那样,这些不对称性是DNA分子的结构和DNA合成的酶机制的结果。此外,越来越多的证据表明,这些不对称性被用作驱动从适应和进化到与模式和发育相关的细胞命运决定的各种过程的机制。
Our understanding of the structure of DNA has helped pave the way for tremendous advancements in understanding the mechanisms of DNA replication. Semiconservative DNA replication has provided an elegant solution to the fundamental problem of how life is able to proliferate in a way that allows cells, organisms, and populations to survive and replicate many times over. Somewhat lost, however, in our admiration for this elegant mechanism is an appreciation for the asymmetries that inevitably occur in the process of DNA replication. As we will discuss in this review, these asymmetries arise as a consequence of the structure of the DNA molecule and the enzymatic mechanism DNA synthesis. Furthermore, increasing evidence suggests that these asymmetries are utilized as mechanisms to drive diverse processes ranging from adaptation and evolution, to cell fate decisions related to patterning and development.
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