Probing ion channel macromolecular interactions using fluorescence resonance energy transfer.
Probing ion channel macromolecular interactions using fluorescence resonance energy transfer.
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DOI:
10.1016/bs.mie.2021.01.047
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发表时间:
2021
影响因子:
--
通讯作者:
Ben-Johny M
中科院分区:
文献类型:
--
作者:
Rivas S;Hanif K;Chakouri N;Ben-Johny M
Ion channels are macromolecular complexes whose function is exquisitely tuned by interacting proteins. Fluorescence Resonance Energy Transfer (FRET) is a powerful methodology that is adept at quantifying ion channel protein-protein interactions in living cells. For FRET experiments, the interacting partners are tagged with appropriate donor and acceptor fluorescent proteins. If the fluorescently-labeled molecules are in close proximity, then photoexcitation of the donor results in non-radiative energy transfer to the acceptor, and subsequent fluorescence emission of the acceptor. The stoichiometry of ion channel interactions and their relative binding affinities can be deduced by quantifying both the FRET efficiency and the total number of donors and acceptors in a given cell. In this chapter, we discuss general considerations for FRET analysis of biological interactions, various strategies for estimating FRET efficiencies, and detailed protocols for construction of binding curves and determination of stoichiometry. We focus on implementation of FRET assays using a flow cytometer given its amenability for high-throughput data acquisition, enhanced accessibility, and robust analysis. This versatile methodology permits mechanistic dissection of dynamic changes in ion channel interactions.
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DOI:
10.1073/pnas.0907866106
发表时间:
2009-12-29
影响因子:
11.1
作者:
Dertinger, T.;Colyer, R.;Enderlein, J.
通讯作者:
Enderlein, J.
影响因子:
3.5
作者:
Chen, Huanmian;Puhl, Henry L., III;Ikeda, Stephen R.
通讯作者:
Ikeda, Stephen R.
影响因子:
64.8
作者:
Glauner, KS;Mannuzzu, LM;Isacoff, EY
通讯作者:
Isacoff, EY
影响因子:
48
作者:
Algar, W. Russ;Hildebrandt, Niko;Medintz, Igor L.
通讯作者:
Medintz, Igor L.
影响因子:
2.4
作者:
FORSTER, T
通讯作者:
FORSTER, T