Mechanics of bundled semiflexible polymer networks

Lieleg, O.; Claessens, M. M. A. E.; Heussinger, Claus; Frey, Erwin und Bausch, A. R. (August 2007): Mechanics of bundled semiflexible polymer networks. In: Physical Review Letters, Bd. 99, Nr. 8: 088102-1

Abstract

While actin bundles are used by living cells for structural fortification, the microscopic origin of the elasticity of bundled networks is not understood. Here, we show that above a critical concentration of the actin binding protein fascin, a solution of actin filaments organizes into a pure network of bundles. While the elasticity of weakly cross-linked networks is dominated by the affine deformation of tubes, the network of bundles can be fully understood in terms of nonaffine bending undulations.

• Dokumententyp: Zeitschriftenartikel
• Publikationsform: Publisher's Version
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Ort: ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
• Sprache: Englisch