GAGA factor: a multifunctional pioneering chromatin protein.

GAGA factor: a multifunctional pioneering chromatin protein.
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DOI:
10.1007/s00018-021-03776-z
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发表时间:
2021-05
期刊:
Cellular and molecular life sciences : CMLS
影响因子:
--
通讯作者:
Schedl P
Schedl P
中科院分区:
其他
文献类型:
--
作者:
Chetverina D;Erokhin M;Schedl P

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果蝇GAGA因子(Drosophila GAGA factor,GAF)是一种多功能蛋白,参与核小体的组织和重塑、基因表达的激活和抑制、长距离增强子-启动子通讯、染色体的高级结构和有丝分裂。这种广泛的活动提出了一个问题,即单一蛋白质如何执行如此多看似不同和不相关的功能。目前的研究认为,GAF作为一个“先锋”的因素,产生核小体的染色质区域的不同类别的调控元件。从调节元件中去除核小体反过来又使其他因子能够结合这些元件并执行其专门功能。与这一观点一致,GAF与染色质重塑物的集合相关联,并且还与涉及不同调节功能的蛋白质相互作用。本文综述了GAF的活性及其蛋白伴侣的功能。
The Drosophila GAGA factor (GAF) is a multifunctional protein implicated in nucleosome organization and remodeling, activation and repression of gene expression, long distance enhancer-promoter communication, higher order chromosome structure and mitosis. This broad range of activities poses questions about how a single protein can perform so many seemingly different and unrelated functions. Current studies argue that GAF acts as a “pioneer” factor, generating nucleosome free regions of chromatin for different classes of regulatory elements. The removal of nucleosomes from regulatory elements in turn enables other factors to bind to these elements and carry out their specialized functions. Consistent with this view, GAF associates with a collection of chromatin remodelers and also interacts with proteins implicated in different regulatory functions. In this review, we summarize the known activities of GAF and the functions of its protein partners.
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