Anatomy of four human Argonaute proteins.

Anatomy of four human Argonaute proteins.
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DOI:
10.1093/nar/gkac519
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发表时间:
2022-07-08
影响因子:
14.9
通讯作者:
Nakanishi, Kotaro
Nakanishi, Kotaro
中科院分区:
生物学2区
文献类型:
--
作者:
Nakanishi, Kotaro

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MicroRNAs (miRNAs)与互补的靶rna结合,并在转录后调控其基因表达。这些非编码调控rna在装载到Argonaute (AGO)蛋白中形成效应复合物后开始发挥功能。人类有AGO1、AGO2、AGO3和AGO4 4种AGO蛋白,它们具有较高的序列同一性。由于大多数mirna都是在四个AGOs中发现的,因此人们一直认为它们是冗余的,并且AGO2作为人类的范例进行了大量研究。然而,越来越多的研究发现,其他类似物在各种生物过程和疾病中发挥着独特的作用。近十年来,四古带的构造研究为该领域提供了坚实的构造基础。本综述利用完整的结构目录来描述四个AGOs靶特异性的共同特征和差异。
MicroRNAs (miRNAs) bind to complementary target RNAs and regulate their gene expression post-transcriptionally. These non-coding regulatory RNAs become functional after loading into Argonaute (AGO) proteins to form the effector complexes. Humans have four AGO proteins, AGO1, AGO2, AGO3 and AGO4, which share a high sequence identity. Since most miRNAs are found across the four AGOs, it has been thought that they work redundantly, and AGO2 has been heavily studied as the exemplified human paralog. Nevertheless, an increasing number of studies have found that the other paralogs play unique roles in various biological processes and diseases. In the last decade, the structural study of the four AGOs has provided the field with solid structural bases. This review exploits the completed structural catalog to describe common features and differences in target specificity across the four AGOs.
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