Observing conformations of single FoF1-ATP synthases in a fast anti-Brownian electrokinetic trap

Observing conformations of single FoF1-ATP synthases in a fast anti-Brownian electrokinetic trap
复制标题

观察快速抗布朗动电陷阱中单个 FoF1-ATP 合酶的构象

DOI:
10.1117/12.2080975
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
M. Börsch
M. Börsch
中科院分区:
--
文献类型:
--
作者:
M. G. Düser;N. Zarrabi;T. Heitkamp;I. Starke;M. Börsch

文献摘要

参考文献

被引文献

相似文献

为了真实的实时监测脂质体中单个膜转运蛋白的构象变化,我们将两个荧光团连接到蛋白质的选定结构域。染料之间的顺序距离变化记录和分析的福斯特共振能量转移(FRET)。使用在脂质体中重构的自由扩散膜蛋白,观察时间受到通过共聚焦检测体积的布朗运动的限制。A. E. Cohen和W. E. Moerner发明并构建了微流体装置,以主动抵消电动陷阱(ABELtrap)中单个纳米颗粒的布朗运动。在这里,我们提出了一个版本的ABELtrap的激光聚焦模式产生的电光光束偏转器和可编程FPGA控制。这种ABELtrap可以容纳单个荧光纳米珠超过100秒,将单个颗粒的观察时间增加1000倍以上。在ABELtrap中可以检测到单个FRET标记的膜酶FoF 1-ATP合酶的构象变化。
To monitor conformational changes of individual membrane transporters in liposomes in real time, we attach two fluorophores to selected domains of a protein. Sequential distance changes between the dyes are recorded and analyzed by Förster resonance energy transfer (FRET). Using freely diffusing membrane proteins reconstituted in liposomes, observation times are limited by Brownian motion through the confocal detection volume. A. E. Cohen and W. E. Moerner have invented and built microfluidic devices to actively counteract Brownian motion of single nanoparticles in electrokinetic traps (ABELtrap). Here we present a version of an ABELtrap with a laser focus pattern generated by electro-optical beam deflectors and controlled by a programmable FPGA. This ABELtrap could hold single fluorescent nanobeads for more than 100 seconds, increasing the observation times of a single particle more than 1000-fold. Conformational changes of single FRET-labeled membrane enzymes FoF1-ATP synthase can be detected in the ABELtrap.
通过荧光互相关光谱检测活细胞中配体诱导的 CNTF 受体二聚体。
DOI: 10.1016/j.bbamem.2009.05.013
发表时间: 2009
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Felix Neugart;Andrea Zappe;Deborah M. Buk;I. Ziegler;S. Steinert;Monika Schumacher;Eva Schopf;Ralph Bessey;K. Wurster;C. Tietz;M. Börsch;J. Wrachtrup;L. Graeve
通讯作者: L. Graeve
DOI: 10.1073/pnas.1103554108
发表时间: 2011-05-31
影响因子: 11.1
作者:
Fields, Alexander P.;Cohen, Adam E.
通讯作者: Cohen, Adam E.
DOI: 10.1021/nn202313g
发表时间: 2011-07-01
期刊: ACS NANO
影响因子: 17.1
作者:
Cohen, Adam E.;Fields, Alexander P.
通讯作者: Fields, Alexander P.
大肠杆菌 F(0)F(1)-ATP 合酶系链结构域中 b 亚基之间的距离。
DOI: 10.1016/j.bbabio.2005.03.013
发表时间: 2005
期刊: Biochimica et biophysica acta
影响因子: --
作者:
S. Steigmiller;M. Börsch;P. Gräber;M. Huber
通讯作者: M. Huber
单膜结合 F0F1-ATP 合酶旋转催化的不对称性
DOI: --
发表时间: 2005
期刊: SPIE BiOS
影响因子: --
作者:
N. Zarrabi;B. Zimmermann;M. Diez;P. Graeber;J. Wrachtrup;M. Boersch
通讯作者: M. Boersch