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
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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
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
M. Börsch
中科院分区:
文献类型:
--
作者:
M. G. Düser;N. Zarrabi;T. Heitkamp;I. Starke;M. Börsch
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.
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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.
影响因子:
17.1
作者:
Cohen, Adam E.;Fields, Alexander P.
通讯作者:
Fields, Alexander P.
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
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