Two-Dimensional Fluorescence Lifetime Correlation Spectroscopy: Concepts and Applications.

Two-Dimensional Fluorescence Lifetime Correlation Spectroscopy: Concepts and Applications.
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DOI:
10.3390/molecules23112972
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发表时间:
2018-11-14
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Yamaguchi S
Yamaguchi S
中科院分区:
其他
文献类型:
--
作者:
Otosu T;Yamaguchi S

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二维荧光寿命相关光谱(2DFLCS)是荧光相关光谱(FCS)的扩展,除了分析荧光强度的相关性外,还可以分析荧光寿命的相关性。荧光寿命对微环境敏感,与FRET结合后可以成为“分子标尺”。利用荧光寿命在二维FLCS,从而使我们能够量化的系统的不均匀性和不同物种之间的相互转换动力学具有更高的时间分辨率比其他单分子技术。近年来,二维FLCS在各种生物体系中的应用表明,二维FLCS是一种独特的、有前途的工具,可以在单分子水平上定量分析大分子的微秒级构象动力学。
We review the basic concepts and recent applications of two-dimensional fluorescence lifetime correlation spectroscopy (2D FLCS), which is the extension of fluorescence correlation spectroscopy (FCS) to analyze the correlation of fluorescence lifetime in addition to fluorescence intensity. Fluorescence lifetime is sensitive to the microenvironment and can be a “molecular ruler” when combined with FRET. Utilization of fluorescence lifetime in 2D FLCS thus enables us to quantify the inhomogeneity of the system and the interconversion dynamics among different species with a higher time resolution than other single-molecule techniques. Recent applications of 2D FLCS to various biological systems demonstrate that 2D FLCS is a unique and promising tool to quantitatively analyze the microsecond conformational dynamics of macromolecules at the single-molecule level.
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