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空气/水界面单分子层中磷脂酰胆碱-脂肪醇的平衡

Phosphatidylcholine-fatty Alcohols Equilibria in Monolayers at the Air/Water Interface.

作者信息

Serafin Agnieszka, Figaszewski Zbigniew Artur, Petelska Aneta Dorota

机构信息

Institute of Chemistry, University of Bialystok, K. Ciolkowskiego Street 1K, 15-245, Bialystok, Poland.

出版信息

J Membr Biol. 2015 Aug;248(4):767-73. doi: 10.1007/s00232-015-9793-x. Epub 2015 Mar 24.

DOI:10.1007/s00232-015-9793-x
PMID:25801604
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4513205/
Abstract

Monolayers of phosphatidylcholine (PC), tetradecanol (TD), hexadecanol (HD), octadecanol (OD) and eicosanol (E) and their binary mixtures were investigated at the air/water interface. The surface tension values of pure and mixed monolayers were used to calculate π-A isotherms. The surface tension measurements were carried out at 22 °C using a Teflon trough and a Nima 9000 tensiometer. The interactions between phosphatidylcholine and fatty alcohols (tetradecanol, hexadecanol, octadecanol, eicosanol) result in significant deviations from the additivity rule. An equilibrium theory to describe the behavior of monolayer components at the air/water interface was developed in order to obtain the stability constants, Gibbs free energy values and areas occupied by one molecules of PC-TD, PC-HD, PC-OD and PC-E complexes. We considered the equilibrium between the individual components and the complex and established that phosphatidylcholine and fatty alcohols formed highly stable 1:1 complexes.

摘要

研究了磷脂酰胆碱（PC）、十四醇（TD）、十六醇（HD）、十八醇（OD）和二十醇（E）的单分子层及其二元混合物在空气/水界面的情况。利用纯单分子层和混合单分子层的表面张力值来计算π-A等温线。表面张力测量在22℃下使用聚四氟乙烯槽和Nima 9000张力计进行。磷脂酰胆碱与脂肪醇（十四醇、十六醇、十八醇、二十醇）之间的相互作用导致显著偏离加和规则。为了获得PC-TD、PC-HD、PC-OD和PC-E络合物中一个分子的稳定常数、吉布斯自由能值和占据面积，开发了一种平衡理论来描述单分子层组分在空气/水界面的行为。我们考虑了各组分与络合物之间的平衡，并确定磷脂酰胆碱和脂肪醇形成了高度稳定的1:1络合物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/9696654d8bf4/232_2015_9793_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/67964b0099e5/232_2015_9793_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/4eb98c9f9fdf/232_2015_9793_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/9696654d8bf4/232_2015_9793_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/67964b0099e5/232_2015_9793_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/4eb98c9f9fdf/232_2015_9793_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3b7b/4513205/9696654d8bf4/232_2015_9793_Fig3_HTML.jpg

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本文引用的文献

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The influence of pH on phosphatidylethanolamine monolayer at the air/aqueous solution interface.pH 值对气/水界面磷脂酰乙醇胺单层的影响。
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在气-水界面的单层中，神经酰胺-胆固醇和神经酰胺-神经酰胺的平衡。
J Membr Biol. 2013 Jan;246(1):13-9. doi: 10.1007/s00232-012-9496-5. Epub 2012 Aug 17.
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The equilibrium of phosphatidylcholine-amino acid system in monolayer at the air/water interface.在气/水界面单层中磷脂酰胆碱-氨基酸体系的平衡。
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The equilibria of phosphatidylcholine-fatty acid and phosphatidylcholine-amine in monolayers at the air/water interface.在气/水界面单层膜中，磷脂酰胆碱-脂肪酸和磷脂酰胆碱-胺的平衡。
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