Buckling of actin-coated membranes under application of a local force |
| |
Authors: | Helfer E Harlepp S Bourdieu L Robert J MacKintosh F C Chatenay D |
| |
Institution: | Laboratoire de Dynamique des Fluides Complexes, U.M.R. C.N.R.S. 7506, Strasbourg, France. |
| |
Abstract: | The mechanical properties of composite membranes obtained by self-assembly of actin filaments with giant fluid vesicles are studied by micromanipulation with optical tweezers. These complexes exhibit typical mechanical features of a solid shell, including a finite in-plane shear elastic modulus ( approximately 10(-6) N/m). A buckling instability is observed when a localized force of the order of 0.5 pN is applied perpendicular to the membrane plane. Although predicted for polymerized vesicles, this is the first evidence of such an instability. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|