Stability and proton-permeability of liposomes composed of archaeal tetraether lipids

Marieke G.L. Elferink, Janny G. de Wit, Arnold J.M. Driessen, Wil N. Konings

    Research output: Contribution to journalArticleAcademicpeer-review

    143 Citations (Scopus)
    90 Downloads (Pure)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)247-254
    Number of pages8
    JournalBiochimica et Biophysica Acta-Biomembranes
    Volume1193
    Issue number2
    DOIs
    Publication statusPublished - 3-Aug-1994

    Keywords

    • TETRAETHER LIPID
    • LIPOSOME
    • STABILITY
    • PROTON PERMEABILITY
    • (ARCHAEON)
    • AMINO-ACID-TRANSPORT
    • ARCHAEBACTERIAL TERMINAL OXIDASE
    • ENERGY-TRANSDUCING PROPERTIES
    • SULFOLOBUS-ACIDOCALDARIUS
    • MEMBRANE-VESICLES
    • ESCHERICHIA-COLI
    • BACILLUS-STEAROTHERMOPHILUS
    • THERMOPHILIC BACILLUS
    • BIPOLAR LIPIDS
    • CELL ENVELOPES

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