Shadow enhancers: frequently asked questions about distributed cis-regulatory information and enhancer redundancy.

Shadow enhancers: frequently asked questions about distributed cis-regulatory information and enhancer redundancy.
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DOI:
10.1002/bies.201100121
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发表时间:
2012-02
期刊:
影响因子:
4
通讯作者:
Barolo, Scott
Barolo, Scott
中科院分区:
生物学3区
文献类型:
--
作者:
Barolo, Scott

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这篇综述以常见问题解答的形式,解决了关于“阴影增强子”、准冗余顺式调控元件及其在转录控制中的拟议作用的悬而未决的问题。问题包括:阴影增强剂到底是什么?有多少基因有影子/冗余/分布式增强子?这些元素有多冗余?分布式增强器的功能是什么?增强器的模块化程度如何?单独研究单个增强子有用吗?此外,提出了“阴影增强剂”的新定义,并讨论了阴影增强剂的作用机制及其演化。
This review, in the form of a FAQ, addresses outstanding questions about “shadow enhancers”, quasi-redundant cis-regulatory elements, and their proposed roles in transcriptional control. Questions include: What exactly are shadow enhancers? How many genes have shadow/redundant/distributed enhancers? How redundant are these elements? What is the function of distributed enhancers? How modular are enhancers? Is it useful to study a single enhancer in isolation? In addition, a revised definition of “shadow enhancers” is proposed, and possible mechanisms of shadow enhancer function and evolution are discussed.
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