On the molecular nature of large-pore channels.

On the molecular nature of large-pore channels.
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DOI:
10.1016/j.jmb.2021.166994
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发表时间:
2021-08-20
影响因子:
5.6
通讯作者:
Furukawa H
Furukawa H
中科院分区:
生物学2区
文献类型:
--
作者:
Syrjanen J;Michalski K;Kawate T;Furukawa H

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膜转运是控制细胞凋亡、炎症和神经退行性变等基本细胞过程的基本手段,并由许多转运蛋白、泵和通道介导。半个世纪以来积累的证据表明,各种组织器官中存在一种所谓的“大孔通道”,以缝隙连接和非缝隙连接的形式存在,不仅可以流动离子,还可以流动ATP等代谢物。它们由许多具有很少或没有进化联系的蛋白质家族形成,包括连接蛋白、内连接蛋白、泛连接蛋白、富含亮氨酸的重复序列8(LRRC8)和钙稳态调节剂(CALHM)。本文综述了大孔通道的历史和概念,从连接蛋白间隙连接通道开始,到最近的研究进展,包括innexin,pannexin,LRRC8和CALHM。我们描述了大孔通道的结构和功能特征,这些特征对它们在现有结构基础上的不同功能至关重要。
Membrane transport is a fundamental means to control basic cellular processes such as apoptosis, inflammation, and neurodegeneration and is mediated by a number of transporters, pumps, and channels. Accumulating evidence over the last half century has shown that a type of so-called “large-pore channel” exists in various tissues and organs in gap-junctional and non-gap-junctional forms in order to flow not only ions but also metabolites such as ATP. They are formed by a number of protein families with little or no evolutionary linkages including connexin, innexin, pannexin, leucine-rich repeat-containing 8 (LRRC8), and calcium homeostasis modulator (CALHM). This review summarizes the history and concept of large-pore channels starting from connexin gap junction channels to the more recent developments in innexin, pannexin, LRRC8, and CALHM. We describe structural and functional features of large-pore channels that are crucial for their diverse functions on the basis of available structures.
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