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. 1981:23:145-9.

Lipidic particles

A J Verkleij, B de Kruijff, C J van Echteld, W J Gerritsen, C Mombers, P C Noordam, J Leunissen-Bijvelt, J de Gier
  • PMID: 6784158

Lipidic particles

A J Verkleij et al. Acta Histochem Suppl. 1981.

Abstract

A new type of lipid organization is observed in mixtures of phosphatidylcholine with cardiolipin in the presence of Ca++, monoglucosyldiglyceride and phosphatidylethanolamine (in the presence of cholesterol). This phase is characterized by an isotropic 31P NMR signal and is visualized by freeze fracturing as particles and pits on the fracture faces of the lipid bilayer. As the most favourable model for this phase we propose the inverted micelle sandwiched in between the two monolayers of the lipid bilayer. It will be shown that such particles and pits appear on the fusion site during fusion of unilamellar vesicles of an equimolar mixture of phosphatidylcholine and cardiolipin in the presence of Ca++.

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