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Differences in hydrocarbon chain tilt between hydrated phosphatidylethanolamine and phosphatidylcholine bilayers. A molecular packing model.水合磷脂酰乙醇胺和磷脂酰胆碱双层膜中烃链倾斜度的差异。一种分子堆积模型。
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A low-temperature structural phase transition of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine bilayers in the gel phase.凝胶相中1,2-二棕榈酰-sn-甘油-3-磷酸胆碱双层膜的低温结构相变
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本文引用的文献

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Dilatometry and calorimetry of saturated phosphatidylethanolamine dispersions.饱和磷脂酰乙醇胺分散体的膨胀测定法和量热法。
Biochemistry. 1981 Jan 6;20(1):187-92. doi: 10.1021/bi00504a031.
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The use of differential scanning calorimetry and differential thermal analysis in studies of model and biological membranes.差示扫描量热法和差热分析在模型膜和生物膜研究中的应用
Chem Phys Lipids. 1982 May;30(2-3):229-59. doi: 10.1016/0009-3084(82)90053-6.
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The fluidity of cell membranes and its regulation.细胞膜的流动性及其调控
Prog Biophys Mol Biol. 1981;38(1):1-104. doi: 10.1016/0079-6107(81)90011-0.
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Intermolecular hydrogen bonding between lipids: influence on organization and function of lipids in membranes.脂质间的分子间氢键：对膜中脂质的组织和功能的影响。
Can J Biochem. 1980 Oct;58(10):755-70. doi: 10.1139/o80-107.
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The dynamics of membrane structure.膜结构的动力学
CRC Crit Rev Biochem. 1980;8(1):1-117. doi: 10.3109/10409238009105466.
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Amplitude of rippling in the P beta phase of dipalmitoylphosphatidylcholine bilayers.二棕榈酰磷脂酰胆碱双层膜Pβ相中的波纹幅度。
Biophys J. 1982 Jun;38(3):217-26. doi: 10.1016/S0006-3495(82)84551-7.
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Interaction of metal ions with phosphatidylcholine bilayer membranes.金属离子与磷脂酰胆碱双层膜的相互作用。
Biochemistry. 1981 Dec 22;20(26):7366-73. doi: 10.1021/bi00529a007.
8
Differences in hydrocarbon chain tilt between hydrated phosphatidylethanolamine and phosphatidylcholine bilayers. A molecular packing model.水合磷脂酰乙醇胺和磷脂酰胆碱双层膜中烃链倾斜度的差异。一种分子堆积模型。
Biophys J. 1980 Feb;29(2):237-45. doi: 10.1016/S0006-3495(80)85128-9.
9
Characterization of the pretransition in 1,2-dipalmitoyl-sn-glycero-3-phosphocholine by Fourier transform infrared spectroscopy.利用傅里叶变换红外光谱法对1,2-二棕榈酰-sn-甘油-3-磷酸胆碱的预转变进行表征
Biochemistry. 1980 Aug 5;19(16):3665-72. doi: 10.1021/bi00557a005.
10
Molecular motion in phospholipid bilayers in the gel phase: long axis rotation.凝胶相磷脂双分子层中的分子运动：长轴旋转
Biochemistry. 1980 Apr 15;19(8):1632-7. doi: 10.1021/bi00549a017.

镧离子对卵磷脂双层膜相变的影响。

Effect of lanthanum ions on the phase transitions of lecithin bilayers.

作者信息

Chowdhry B Z, Lipka G, Dalziel A W, Sturtevant J M

出版信息

Biophys J. 1984 Mar;45(3):633-5. doi: 10.1016/S0006-3495(84)84202-2.

DOI:10.1016/S0006-3495(84)84202-2
PMID:6546889
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1434875/
Abstract

Interaction of lanthanum ions (La3+) with 1,2 dipalmitoyl-sn-glycero-3-phosphorylcholine (DPPC) causes an increase in Tc, the temperature of maximal excess heat capacity, and the width of the gel-to-liquid crystalline transition. At a mole ratio of La3+ to DPPC sufficient to remove the hydrocarbon chain tilt angle of DPPC, the changes in the thermodynamic parameters of the pretransition are minor, Tc and the width were unaltered and the enthalpy was reduced by only 10%. This suggests that the change in tilt angle is not a necessary concomitant of the pretransition.

摘要

镧离子（La3+）与1,2 - 二棕榈酰 - sn - 甘油 - 3 - 磷酸胆碱（DPPC）的相互作用会导致Tc（最大过剩热容量出现时的温度）升高，以及凝胶态到液晶态转变的宽度增加。当La3+与DPPC的摩尔比足以消除DPPC的烃链倾斜角时，预转变的热力学参数变化较小，Tc和宽度未改变，焓仅降低了10%。这表明倾斜角的变化并非预转变必然伴随的现象。