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Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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Updated: Jul 14, 2026

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Published on: September 16, 2014

溶液相单量子点光共振能量转移的能量转移.

Thomas Pons¹, Igor L Medintz, Xiang Wang

¹Optical Sciences Division, Code 5611, Center for Bio/Molecular Science and Engineering, Code 6900, Naval Research Laboratory, Washington, D.C. 20375, USA.

Journal of the American Chemical Society

|November 23, 2006

概括

单粒子光共振能量转移 (spFRET) 揭示了不同的传感器子群和目标相互作用的异质性. 这种量子点 (QD) 生物结合传感器方法提供了高灵敏度,并验证了组合测量.

科学领域:

生物物理学的生物物理.
纳米技术纳米技术
频谱学是一种光谱学.

背景情况:

光共振能量转移 (FRET) 对于研究分子相互作用至关重要.
量子点 (QD) 为生物传感应用提供独特的光物理特性.
单粒子技术提供了比集体测量更高的分辨率.

研究的目的:

用单颗粒FRET (spFRET) 来描述自组装的量子点 (QD) 生物结合传感器.
为了将spFRET数据与整体FRET测量相关联.
为了研究目标相互作用中的传感器异质性.

主要方法:

使用自由扩散,自组装的CdSe-ZnS核心外QD蛋白生物结合体传感器.
采用单粒子光共振能量转移 (spFRET) 光谱.
将spFRET结果与整体FRET测量结果进行比较.

主要成果:

建立了spFRET和集合FRET的效率和距离之间的直接相关性.
证明了spFRET通过FRET效率分布来解决不同的传感器子群的能力.
显示QD蛋白合价值分布遵循Poisson统计数据.

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High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

相关实验视频

Last Updated: Jul 14, 2026

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Published on: September 16, 2014

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

单个传感器-目标相互作用的特征异质性,根据目标度而异.

结论:

spFRET提供了增强的灵敏度和对传感器子群和相互作用的详细见解.
QD蛋白合体的价值分布遵循波桑统计.
spFRET 是一种强大的工具,用于描述生物传感中的分子异质性.