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Fluorescent membrane probes’ behavior in lipid bilayers: insights from molecular dynamics simulations

机译:荧光膜探针在脂质双层中的行为:分子动力学模拟的见解

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摘要

Fluorescence spectroscopy and microscopy have been used as tools to study membrane biophysics for decades now. Because phospholipids are non-fluorescent, the use of extrinsic membrane probes in this context is commonplace. Two major points of concern arise regarding this matter, namely the incomplete understanding of the probe behavior inside the bilayer and the perturbation of the latter resulting from probe incorporation. To this effect, molecular dynamics (MD) simulations, by providing detailed atomic-scale information, represent a valuable way to characterize the location and dynamics of bilayer-inserted membrane probes, as well as the magnitude of perturbation they induce on the host lipid structure, and several important classes of reporter molecules have been studied in recent years. This article reviews the state of the art of MD simulations of bilayer-inserted fluorescent probes, focusing on the information that has been obtained from previous studies and hinting at future perspectives in this rapidly emerging field.
机译:几十年来,荧光光谱法和显微镜已被用作研究膜生物物理学的工具。由于磷脂是非荧光性的,因此在这种情况下使用非本征膜探针是司空见惯的。关于此问题,有两个主要的关注点,即对双层内部探针行为的不完全了解以及由于掺入探针而引起的双层扰动。为此,通过提供详细的原子级信息,分子动力学(MD)模拟代表了表征双层插入的膜探针的位置和动力学以及它们对宿主脂质结构引起的扰动幅度的一种有价值的方法,近年来已经研究了几种重要的报告分子。本文回顾了双层插入式荧光探针的MD模拟的最新技术,重点是从以前的研究中获得的信息,并暗示了这个快速发展的领域的未来前景。

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