On‐site remodeling at chromatin: How multiprotein complexes are rebuilt during DNA repair and transcriptional activation

On‐site remodeling at chromatin: How multiprotein complexes are rebuilt during DNA repair and transcriptional activation
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染色质现场重塑:DNA 修复和转录激活过程中多蛋白复合物如何重建

DOI:
10.1002/bies.201600094
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发表时间:
2016
期刊:
影响因子:
4
通讯作者:
H. Richly
H. Richly
中科院分区:
生物学3区
文献类型:
--
作者:
Thaleia Papadopoulou;H. Richly

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在这篇综述中,我们讨论了一种新的现场重塑功能,是由H2 A-泛素结合蛋白ZRF 1介导的。ZRF 1促进染色质多蛋白复合物的重塑,并位于DNA损伤位点和转录激活过程中发生的信号转导过程的核心。在核苷酸切除修复中,ZRF 1在损伤位点重塑E3泛素连接酶复合物。在胚胎干细胞分化过程中,它通过改变介体复合物的亚基组成来促进视黄酸介导的基因激活。我们假设ZRF 1与细胞重塑机器一起运作,并建议现场重塑可能是许多染色质相关信号通路的标志。我们讨论ZRF 1介导的重塑在复制和双链断裂修复中尚未探索的功能。总之,我们假设多蛋白复合物的原位重塑对于染色质信号传导过程的时机至关重要。
In this review, we discuss a novel on‐site remodeling function that is mediated by the H2A‐ubiquitin binding protein ZRF1. ZRF1 facilitates the remodeling of multiprotein complexes at chromatin and lies at the heart of signaling processes that occur at DNA damage sites and during transcriptional activation. In nucleotide excision repair ZRF1 remodels E3 ubiquitin ligase complexes at the damage site. During embryonic stem cell differentiation, it contributes to retinoic acid‐mediated gene activation by altering the subunit composition of the Mediator complex. We postulate that ZRF1 operates in conjunction with cellular remodeling machines and suggest that on‐site remodeling might be a hallmark of many chromatin‐associated signaling pathways. We discuss yet unexplored functions of ZRF1‐mediated remodeling in replication and double strand break repair. In conclusion, we postulate that on‐site remodeling of multiprotein complexes is essential for the timing of chromatin signaling processes.
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