Interaction between L-α-Phosphatidylcholine and Water Molecules. III
Interaction between L-α-Phosphatidylcholine and Water Molecules. III
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L-α-磷脂酰胆碱和水分子之间的相互作用 III。
DOI：
10.5650/jos1956.39.5_351
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
K. Ogino
中科院分区：
文献类型：
--
作者：
M. Abe;Masaki Goto;K. Ogino
用荧光光谱仪研究了水分子对L-α-磷脂酰胆碱膜微性质的影响。用静态荧光技术测定了L-α-磷脂酰胆碱分子在凝胶相和同心片层相亲水性基团周围的极性，在含水量约为20 wt%时发生了显著变化，微粘度随含水量的增加而降低。在L-α-磷脂酰胆碱-水体系中加入尿素后，在含水量大于20%时，亲水性基团周围的极性和微粘度发生了变化，这可能是由于层间水的结构特征发生了变化。本研究表明，L-α-磷脂酰胆碱双分子层的理化微观性质与水分子的结构特征有关。
The structural characteristics of water molecules on membrane microproperties of L-α-phosphatidylcholines were investigated by a fluorescence spectrometer. Polarity in the surroundings of the hydrophilic groups of L-α-phosphatidylcholine molecules in gel and concentric lamella phases, using a static fluorescence technique, considerably changed at a water content of about 20 wt%, and microviscosity decreased with increasing water content. Addition of urea to L-α-phosphatidylcholine-water systems changed the polarity and microviscosity in the surroundings of hydrophilic groups at a water content above 20 wt% probably due to change of structural characteristics of interlamella water. The present study suggests that the physicochemical microproperties of L-α-phosphatidylcholine bilayer are related to the structural characteristics of water molecules.