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  • Flat and sigmoidally curved contact zones in vesicle-vesicle adhesion
    Ziherl, Primož ; Svetina, Saša, 1935-
    Using the membrane-bending elasticity theory and a simple effective model of adhesion, we study the morphology of lipid vesicle doublets. In the weak adhesion regime, we find flat-contact ... azisymmetric doublets, whereas at large adhesion strengths, the vesicle aggregates are nonaxisymmetric and characterized by a sigmoidally curved, S-shaped contact zone with a single invagination and a complementary evagination on each vesicle. The sigmoid-contact doublets agree very well with the experimentally observed shapes of erythrocyte aggregates. Our results show that in identical vesicles with large to moderate surface-to-volume ratio, the sigmoid-contact shape is the only bound morphology. We also discuss the role of sigmoid contacts in theformation of multicellular aggregates such as erythrocyte rouleaux.
    Vir: Proceedings of the National Academy of Sciences of the United States of America. - ISSN 0027-8424 (Letn. 104, št. 3, 2007, str. 761-765)
    Vrsta gradiva - članek, sestavni del
    Leto - 2007
    Jezik - angleški
    COBISS.SI-ID - 22325721

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