Physicochemical characterization of tetraetherlipids from thermoplasma acidophilum. IV. Calorimetric studies on the miscibility of tetraetherlipids with dipalmitoyl phosphatidylcholine and dipalmitoyl phosphatidylglycerol

  • By means of differential thermoanalysis, the miscibility of the main polar tetraether lipid of Thermoplasma acidophilum with two ester lipids, dipalmitoyl phosphatidylcholine and dipalmitoyl phosphatidylglycerol, resp., in the presence of excess water was studied. It is shown that with increasing fraction of tetraether lipid in the mixture, the transition range of dipalmitoyl phosphatidylcholine is broadened and the temperature of the maximum heat flow (Tm) is shifted to lower temperatures; furthermore, the enthaply change (ΔH) of the transition declines. Similar results were obtained with mixtures of tetraether lipid with dipalmitoyl phosphatidylglycerol. It is therefore concluded that the main polar tetraether lipid of Thermoplasma acidophilum , which essentially forms monomolecular layers, is able to form stable common phases with bilayer-forming ester lipids. Miscibility of the tetraether lipid with dipalmitoyl phosphatidylglycerol, which are both monovalent anions at neutral pH, is also observed in the presence of high proton or calcium ion concentrations.

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Metadaten
Author:Detlef BlöcherGND, Raymund Gutermann, Birgit Henkel, Klaus RingGND
URN:urn:nbn:de:hebis:30:3-818486
DOI:https://doi.org/10.1515/znc-1985-9-1003
ISSN:0939-5075
ISSN:1865-7125
Parent Title (German):Zeitschrift für Naturforschung, C
Publisher:Verlag der Zeitschrift für Naturforschung
Place of publication:Tübingen
Document Type:Article
Language:English
Date of Publication (online):2014/06/02
Year of first Publication:1985
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2024/02/05
Tag:Archaebacterial Lipids; Differential Thermoanalysis; Mixed Lipid Phases; Thermoplasma acidophilum Membranes; Tetraetherlipids
Volume:40.1985
Issue:9-10
Page Number:6
First Page:606
Last Page:611
Institutes:Medizin
Biochemie, Chemie und Pharmazie / Biochemie und Chemie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0