STABILITY AND PROTON-PERMEABILITY OF LIPOSOMES COMPOSED OF ARCHAEAL TETRAETHER LIPIDS

被引:126
作者
ELFERINK, MGL
DEWIT, JG
DRIESSEN, AJM
KONINGS, WN
机构
[1] Department of Microbiology, University of Groningen, 9751 NN Haren
来源
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES | 1994年 / 1193卷 / 02期
关键词
TETRAETHER LIPID; LIPOSOME; STABILITY; PROTON PERMEABILITY; (ARCHAEON);
D O I
10.1016/0005-2736(94)90160-0
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Liposomes composed of tetraether lipids originating from the thermoacidophilic archaeon Sulfolobus acidocaldarius were analyzed for their stability and proton permeability from 20 degrees C up to 80 degrees C. At room temperature, these liposomes are considerably more stable and have a much lower proton permeability than liposomes composed of diester lipids originating from the mesophilic bacterium Escherichia coli or the thermophilic bacterium Bacillus stearothermophilus. With increasing temperature, the stability decreased and the proton permeability increased for all liposomes. Liposomes composed from tetraether lipids, however, remain the most stable. These data suggest these liposomes retain the rigidity of the cytoplasmic membrane of S. acidocaldarius needed to endure extreme environmental growth conditions.
引用
收藏
页码:247 / 254
页数:8
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