FRET-enhanced photostability allows improved single-molecule tracking of proteins and protein complexes in live mammalian cells.
FRET-enhanced photostability allows improved single-molecule tracking of proteins and protein complexes in live mammalian cells.
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DOI:
10.1038/s41467-018-04486-0
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发表时间:
2018-06-28
影响因子:
16.6
通讯作者:
Laue ED
中科院分区:
文献类型:
--
作者:
Basu S;Needham LM;Lando D;Taylor EJR;Wohlfahrt KJ;Shah D;Boucher W;Tan YL;Bates LE;Tkachenko O;Cramard J;Lagerholm BC;Eggeling C;Hendrich B;Klenerman D;Lee SF;Laue ED
A major challenge in single-molecule imaging is tracking the dynamics of proteins or complexes for long periods of time in the dense environments found in living cells. Here, we introduce the concept of using FRET to enhance the photophysical properties of photo-modulatable (PM) fluorophores commonly used in such studies. By developing novel single-molecule FRET pairs, consisting of a PM donor fluorophore (either mEos3.2 or PA-JF549) next to a photostable acceptor dye JF646, we demonstrate that FRET competes with normal photobleaching kinetic pathways to increase the photostability of both donor fluorophores. This effect was further enhanced using a triplet-state quencher. Our approach allows us to significantly improve single-molecule tracking of chromatin-binding proteins in live mammalian cells. In addition, it provides a novel way to track the localization and dynamics of protein complexes by labeling one protein with the PM donor and its interaction partner with the acceptor dye. Single molecule tracking of fluorescent proteins in live cells is temporally limited by fluorophore photobleaching. Here the authors show using fluorophore pairs that FRET competes with photobleaching to improve photostability and allow longer-term tracking of both single proteins and complexes.
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影响因子:
56.9
作者:
Elf, Johan;Li, Gene-Wei;Xie, X. Sunney
通讯作者:
Xie, X. Sunney
影响因子:
48
作者:
Grimm, Jonathan B.;English, Brian P.;Lavis, Luke D.
通讯作者:
Lavis, Luke D.
影响因子:
15
作者:
Cordes, Thorben;Vogelsang, Jan;Tinnefeld, Philip
通讯作者:
Tinnefeld, Philip
DOI:
10.1007/978-1-4939-3631-1_17
发表时间:
2016-01-01
期刊:
Chromosome Architecture: Methods and Protocols
影响因子:
--
作者:
Basu, Srinjan;Tan, Yi Lei;Lee, Steven F.
通讯作者:
Lee, Steven F.
影响因子:
14.7
作者:
Ha T;Tinnefeld P
通讯作者:
Tinnefeld P