Structural fluctuation of proteins revealed by terahertz time-domain spectroscopy

被引：4
|
作者：
Kambara, Ohki [1 ]
Tominaga, Keisuke [1 ]
机构：
[1] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, Kobe, Hyogo 6578501, Japan
来源：
SPECTROSCOPY-AN INTERNATIONAL JOURNAL | 2010年 / 24卷 / 1-2期
关键词：
Terahertz time-domain spectroscopy; protein; dynamical transition;
D O I：
10.1155/2010/391586
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
We have measured spectra of the absorption coefficient and refractive index of hen egg white lysozyme in the wavenumber region from 7 cm(-1) to 50 cm(-1) by terahertz (THz) time-domain spectroscopy. From comparison with the results of the inelastic neutron scattering experiment it is concluded that analysis of the THz spectra provides information on the vibrational density of states. We studied temperature dependence of the THz spectra as well as hydration effect on them to discuss structural fluctuation of the protein. We observed dynamical transition at around 210 K for lysozyme.
引用
收藏
页码：149 / 152
页数：4
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