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Amplitude Hierarchy of Vesicle Shapes

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Abstract

Shapes of fluid lipid vesicles are governed by the bending elasticity of their membrane as described by the Area-Difference-Elasticity (ADE) model. These shapes can be quantified using a suitable modal representation of the vesicle contour. Prolate vesicles are characterized by a hierarchy in their shape amplitudes. Experimentally, we find an ordering of the amplitudes with mode number both in large (100 nm) as well as giant (10 μm) unilamellar vesicles. Mean shapes are found only within the small energetically stable region of the prolate phase. Our study demonstrates that bending energy concepts may be quantitatively used on cellular length scales ranging from the size of organelles to the plasma membrane.

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Authors and Affiliations

  1. Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Kantstraße 55, 14513, Teltow-Seehof, Germany

    L. Xu & H.-G. Döbereiner

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  1. L. Xu
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  2. H.-G. Döbereiner
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Xu, L., Döbereiner, HG. Amplitude Hierarchy of Vesicle Shapes. Journal of Biological Physics 25, 35–39 (1999). https://doi.org/10.1023/A:1005190615390

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