Calorimetric and freeze-etch study of the influence of Mg2+ on the thermotropic behaviour of phosphatidylglycerol
Publication date
1975-02
Authors
Ververgaert, P.H.J.Th.
Kruyff, B. de
Verkleij, A.J.
Toscanne, J.F.
Deenen, L.L.M. van
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Article
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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 339 (1974) 432). It is demonstrated that the heat content of this phospholipid is dependent on the ionic environment.