Shape Changes of Self-Assembled Actin Bilayer Composite Membranes

Preprint

12 December 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.physics/9712020

Abstract

We report the self-assembly of thin actin shells beneath the membranes of giant vesicles. Ion-carrier mediated influx of Mg2+ induces actin polymerization in the initially spherical vesicles. Buckling of the vesicles and the formation of blisters after thermally induced bilayer expansion is demonstrated. Bilayer flickering is dominated by tension generated by its coupling to the actin cortex. Quantitative flicker analysis suggests the bilayer and the actin cortex are separated by 0.4 \mum to 0.5 \mum due to undulation forces.

Keywords

COMPOSITE MEMBRANES
BILAYER COMPOSITE
ASSEMBLED ACTIN
POLYMERIZATION
ACTIN BILAYER
VESICLES
BLISTERS
FLICKER
ACTIN

All Related Versions

Version 1, 1997-12-12, ArXiv
Published version: Physical Review Letters, 80 (8), 1786.

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