Mechanistic insights of the Min oscillator via cell-free reconstitution and imaging.

Mechanistic insights of the Min oscillator via cell-free reconstitution and imaging.
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DOI:
10.1088/1478-3975/aa9e5e
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发表时间:
2018-03-01
期刊:
影响因子:
2
通讯作者:
Vecchiarelli AG
Vecchiarelli AG
中科院分区:
生物学4区
文献类型:
--
作者:
Mizuuchi K;Vecchiarelli AG

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大肠杆菌的MinD和MinE蛋白自组织成膜上的驻波振荡器,以帮助在中间细胞处对齐分裂。当从细胞限制中释放出来时,MinD和MinE在人造双层上形成了一系列模式-静态变形虫,行波,移动蘑菇,以及驻波动力学的爆发。我们最近把我们的无细胞研究集中在爆发上,因为它们的动力学概括了体内观察到的Min振荡的许多特征。这些数据揭示了一种模式化机制,主要由MinE调节MinD与膜的相互作用。我们提出,MinD MinE的比例在膜上作为一个拨动开关之间的MinE刺激的招聘和释放MinD从膜。在这篇综述中,我们总结了无细胞的数据上的Min系统,并扩大后的分子机制,提供了一个生化解释,这两个“简单”的蛋白质可以形成显着的光谱模式。
The MinD and MinE proteins of Escherichia coli self-organize into a standing-wave oscillator on the membrane to help align division at mid-cell. When unleashed from cellular confines, MinD and MinE form a spectrum of patterns on artificial bilayers - static amoebas, traveling waves, traveling mushrooms, and bursts with standing-wave dynamics. We recently focused our cell-free studies on bursts because their dynamics recapitulate many features of Min oscillation observed in vivo. The data unveiled a patterning mechanism largely governed by MinE regulation of MinD interaction with membrane. We proposed that the MinD to MinE ratio on the membrane acts as a toggle switch between MinE-stimulated recruitment and release of MinD from the membrane. In this review, we summarize cell-free data on the Min system and expand upon a molecular mechanism that provides a biochemical explanation as to how these two ‘simple’ proteins can form the remarkable spectrum of patterns.
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