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.
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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
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Tollin,Gordon
中科院分区:
文献类型:
--
作者:
Salamon,Zdzislaw;Tollin,Gordon
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.
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影响因子:
3.4
作者:
Salamon, Z;Lindblom, G;Tollin, G
通讯作者:
Tollin, G
影响因子:
--
作者:
Salamon, Z;Tollin, G
通讯作者:
Tollin, G
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
Z. Salamon;G. Tollin
通讯作者:
G. Tollin
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
影响因子:
6.1
作者:
Z. Salamon;G. Tollin
通讯作者:
G. Tollin