镁离子对磷脂酰甘油热致行为影响的量热法和冷冻蚀刻研究
Calorimetric and freeze-etch study of the influence of Mg2+ on the thermotropic behaviour of phosphatidylglycerol.
作者信息
Ververgaert P H, De Kruyff B, Verkleij A J, Tocanne J F, Van Deened L L
出版信息
Chem Phys Lipids. 1975 Feb;14(1):97-101. doi: 10.1016/0009-3084(75)90021-3.
PMID:1122567
Abstract
In the presence of Mg2+ ions phosphatidylglycerol shows supercooling which leads to the formation of a metastable gel phase. This contrasts with the behaviour of this negatively charged phospholipid in the presence of Ca2+ ions (Biochim. Biophys. Acta 39. (1974)432)9 It is demonstrated that the heat content of this phospholipid is dependent on the ionic environment.
摘要
在镁离子存在的情况下，磷脂酰甘油会出现过冷现象，这会导致亚稳凝胶相的形成。这与这种带负电荷的磷脂在钙离子存在时的行为形成对比（《生物化学与生物物理学报》39.（1974）432）。研究表明，这种磷脂的热含量取决于离子环境。
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