磷脂酰胆碱的水合作用。吸附等温线和质子核磁共振研究。
Hydration of phosphatidylocholine. Adsorption isotherm and proton nuclear magnetic resonance studies.
作者信息
Wilkinson D A, Morowitz H J, Prestegard J H
出版信息
Biophys J. 1977 Nov;20(2):169-79. doi: 10.1016/S0006-3495(77)85542-2.
Abstract
Adsorption-desorption isotherms were obtained for water binding by 1,2-dimyristoylphosphatidylcholine in the temperature range 15 degrees-35 degrees C. The isotherms were analyzed by Brunauer et al.'s (BET) theory and also a polarization theory, the latter being more successful in fitting the data. There was some evidence for a change in the surface field of the lipid bilayer around 25 degrees C. Proton T1 and T2 measurements were used to obtain a log-normal molecular correlation time distribution for water protons in these systems. This distribution was compared with the isotherm data to effect a description of several classes of water molecules.
摘要
在15摄氏度至35摄氏度的温度范围内，获得了1,2 - 二肉豆蔻酰磷脂酰胆碱结合水的吸附 - 解吸等温线。这些等温线通过布鲁诺尔等人（BET）的理论以及极化理论进行分析，极化理论在拟合数据方面更为成功。有证据表明在约25摄氏度时脂质双层的表面场发生了变化。质子T1和T2测量用于获得这些系统中水合质子的对数正态分子相关时间分布。将该分布与等温线数据进行比较，以描述几类水分子。
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