TY  - JOUR
A1  - Blöcher, Detlef
A1  - Gutermann, Raymund
A1  - Henkel, Birgit
A1  - Ring, Klaus
T1  - Physicochemical characterization of tetraetherlipids from thermoplasma acidophilum. IV. Calorimetric studies on the miscibility of tetraetherlipids with dipalmitoyl phosphatidylcholine and dipalmitoyl phosphatidylglycerol
T2  - Zeitschrift für Naturforschung, C
N2  - 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.
KW  - Archaebacterial Lipids
KW  - Thermoplasma acidophilum Membranes; Tetraetherlipids
KW  - Differential Thermoanalysis
KW  - Mixed Lipid Phases
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/81848
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-818486
SN  - 0939-5075
SN  - 1865-7125
VL  - 40.1985
IS  - 9-10
SP  - 606
EP  - 611
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -