Long-Range Hydration Effect of Lipid Membrane Studied by Terahertz Time-Domain Spectroscopy
Long-Range Hydration Effect of Lipid Membrane Studied by Terahertz Time-Domain Spectroscopy
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DOI：
10.1103/physrevlett.106.158102
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发表时间：
2011-04-13
影响因子：
8.6
通讯作者：
Tanaka, K.
中科院分区：
文献类型：
--
作者：
Hishida, M.;Tanaka, K.
生物分子的水合状态被认为影响其自组装。磷脂双分子层的水化状态的研究精确的太赫兹光谱，其中水的脂质膜的扰动被检测灵敏地从亚皮秒时间尺度的水分子的弛豫动力学的观察。结合对脂质层状结构的X射线观察，证实了对多达4-5层水的长程水合作用。薄层中的大部分水分子落入水化水中，同时也表明了它们的冷凝作用。
The hydration state of biomolecules is believed to affect their self-assembly. The hydration state of phospholipid bilayers is studied precisely by terahertz spectroscopy, by which water perturbed by a lipid membrane is detected sensitively from the observation of the relaxation dynamics of water molecules in the subpicosecond time scale. Combined with x-ray observation of the lamellar structure of the lipid, a long-range hydration effect on up to 4-5 layers of water is confirmed. Most water molecules in the lamellae fall into the hydration water, and condensation of them is also indicated.