疏水性水合是基于弹性质的生物聚合物中弹性的重要来源
B Li1, D O Alonso, B J Bennion
1Department of Medicinal Chemistry, University of Washington, Seattle, Washington 98195-7610, USA.
Journal of the American Chemical Society
|November 29, 2001
概括
分子动力学模拟显示,疏水性水合驱动着弹性质.
科学领域:
- 生物物理学的生物物理.
- 材料科学 材料科学 材料科学
- 计算生物学 计算生物学
背景情况:
- 弹性对生物组织来说至关重要.
- 弹性质的分子基础仍在争论中.
- 建议疏水性相互作用发挥作用.
研究的目的:
- 通过分子动力学模拟来研究弹性质的主要来源.
- 阐明水分子和疏水相互作用在弹性弹性行为中的作用.
主要方法:
- 一种类似弹性素的的分子动力学模拟, (VPGVG) 18).
- 在不同温度 (10和42°C) 和延伸状态下进行的模拟.
- 分析水的方向和主链动态.
主要成果:
- 拉动时降低水的方向,释放时增加.
- 与释放状态相比,扩展状态中的主链动态增加.
- 有证据表明,当拉伸时,弹性素会重新排列成疏水性球体.
结论:
- 疏水性水合是弹性质基于的弹性的重要来源.
- 疏水效应有助于弹性质保持其延伸状态的能力.
- 模拟支持对弹性质的疏水机制.
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