Hydrophobic Interactions in Water-Trimethylamine-N-oxide Solutions: The Effects of Pressure

被引：6

作者：

Biyani, Nikhil ^{[1
]}

Paul, Sandip ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Gauhati 781039, Assam, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 113卷 / 29期

关键词：

PROTEINS; UREA;

D O I：

10.1021/jp904703c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Molecular dynamics simulations were performed to obtain the effects of pressure on the potentials of mean force between a pair of neopentane molecules immersed in water as well as in aqueous solutions containing trimethylamine-N-oxide (TMAO). It was found that the hydrophobic attraction acting between a neopentane pair in pure water increases with increasing pressure. However, the hydrophobic attraction diminishes by the addition of TMAO even at high pressure. This strongly suggests that TMAO does not counter the pressure induced protein denaturation by enhancing hydrophobic attraction among nonpolar groups.

引用

页码：9644 / 9645

页数：2

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