Graphical analysis of mass and anisotropy changes observed by plasmon-waveguide resonance spectroscopy can provide useful insights into membrane protein function.

Graphical analysis of mass and anisotropy changes observed by plasmon-waveguide resonance spectroscopy can provide useful insights into membrane protein function.
复制标题

通过等离子体波导共振光谱观察到的质量和各向异性变化的图形分析可以为膜蛋白功能提供有用的见解。

DOI:
10.1016/s0006-3495(04)74306-4
复制
发表时间:
2004
期刊:
Biophysical journal.
影响因子:
--
通讯作者:
Tollin,Gordon
Tollin,Gordon
中科院分区:
--
文献类型:
--
作者:
Salamon,Zdzislaw;Tollin,Gordon

文献摘要

参考文献

被引文献

相似文献

等离子体激元波导共振光谱是最近开发的光学方法,其允许表征二维有序薄膜(例如,蛋白脂质膜)沉积在传感器表面上。这些系统的全面分析涉及拟合理论曲线(使用麦克斯韦方程获得)的实验光谱测量使用和p-偏振激发。这允许获得这两个方向上的折射率和消光系数的值,以及膜厚度的值,从而提供关于质量密度和各向异性变化的信息。这是一个耗时的过程,对于其中仅发生单个构象事件的简单系统效果很好,但不能区分涉及顺序进行或以一系列平行事件进行的多个构象的事件。本文介绍了一种图形方法,可以区分质量密度和各向异性的变化,在一个更简单,更快速的程序,即使是通过多个构象事件进行的过程。这涉及测量等离子体激元波导共振光谱位移时获得的分子相互作用发生在沉积的薄膜与两个和p-偏振激发,并将这些从(s-p)坐标系转换成(质量结构)坐标系。这个过程是说明后获得的数据结合的小肽,penetratin,固体支持的脂质双层膜。
Plasmon-waveguide resonance spectroscopy is a recently developed optical method that allows characterization of mass and structural changes in two-dimensionally ordered thin films (e.g., proteolipid membranes) deposited onto a sensor surface. Full analysis of these systems involves fitting theoretical curves (obtained using Maxwell's equations) to experimental spectra measured usings- andp-polarized excitation. This allows values to be obtained for refractive indices and optical extinction coefficients in these two directions, as well as a value for film thickness, thereby providing information about mass density and anisotropy changes. This is a time-consuming process that works well for simple systems in which only a single conformational event occurs, but cannot distinguish between events involving multiple conformations that proceed either sequentially or in a parallel series of events. This article describes a graphical method that can distinguish between mass density and anisotropy changes in a simpler, more rapid procedure, even for processes that proceed via multiple conformational events. This involves measurement of plasmon-waveguide resonance spectral shifts obtained upon molecular interactions occurring in deposited films with boths- andp-polarized excitation, and transforming these from an (s-p) coordinate system into a (mass-structure) coordinate system. This procedure is illustrated by data obtained upon the binding of a small peptide, penetratin, to solid-supported lipid bilayer membranes.
DOI: 10.1016/s0006-3495(03)74987-x
发表时间: 2003-03-01
影响因子: 3.4
作者:
Salamon, Z;Lindblom, G;Tollin, G
通讯作者: Tollin, G
DOI: 10.1155/2001/907405
发表时间: 2001-01-01
影响因子: --
作者:
Salamon, Z;Tollin, G
通讯作者: Tollin, G
表面等离子共振,应用
DOI: --
发表时间: 1999
期刊:
影响因子: --
作者:
Z. Salamon;G. Tollin
通讯作者: G. Tollin
与人δ-阿片受体结合的激动剂/拮抗剂的等离子共振研究:受体-配体相互作用的新结构见解。
DOI: 10.1016/s0006-3495(00)76489-7
发表时间: 2000
影响因子: 3.4
作者:
Salamon,Z;Cowell,S;Varga,E;Yamamura,HI;Hruby,VJ;Tollin,G
通讯作者: Tollin,G
表面等离子体共振光谱在肽和蛋白质分析中的应用
DOI: 10.1002/9780470027318.a1633
发表时间: 2006
影响因子: 6.1
作者:
Z. Salamon;G. Tollin
通讯作者: G. Tollin