Tristetraprolin (TTP): interactions with mRNA and proteins, and current thoughts on mechanisms of action.

Tristetraprolin (TTP): interactions with mRNA and proteins, and current thoughts on mechanisms of action.
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DOI:
10.1016/j.bbagrm.2013.02.003
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发表时间:
2013-06
影响因子:
4.7
通讯作者:
Blackshear, Perry J.
Blackshear, Perry J.
中科院分区:
生物学2区
文献类型:
--
作者:
Brooks, Seth A.;Blackshear, Perry J.

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mRNA稳定性和翻译的变化是基因表达调控的关键控制点,特别是编码生长因子、炎症介质和原癌基因的基因。富含腺苷和尿苷(Au)的元件(ARE)通常位于mRNA的3′非翻译区(3′UTR),已知其靶向转录物以进行快速衰变。它们还参与调节mRNA的稳定性和翻译以响应细胞外信号。本文综述了ARE结合蛋白的最佳特征之一,tristetraprolin(TTP),CCCH串联锌指蛋白的一个小家族的创始成员。在这项调查中,我们已经审查了TTP与mRNA和蛋白质相互作用的现状,并讨论了目前对TTP促进mRNA衰变的作用机制的思考。我们还审查了TTP的磷酸化功能的拟议调节。最后,我们讨论了TTP作为翻译调节剂的新证据。
Changes in mRNA stability and translation are critical control points in the regulation of gene expression, particularly genes encoding growth factors, inflammatory mediators, and proto-oncogenes. Adenosine and uridine (AU)-rich elements (ARE), often located in the 3′ untranslated regions (3′UTR) of mRNAs, are known to target transcripts for rapid decay. They are also involved in the regulation of mRNA stability and translation in response to extracellular cues. This review focuses on one of the best characterized ARE binding proteins, tristetraprolin (TTP), the founding member of a small family of CCCH tandem zinc finger proteins. In this survey, we have reviewed the current status of TTP interactions with mRNA and proteins, and discussed current thinking about TTP's mechanism of action to promote mRNA decay. We also review the proposed regulation of TTP's functions by phosphorylation. Finally, we have discussed emerging evidence for TTP operating as a translational regulator.
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