Berlin 2005 – wissenschaftliches Programm

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CPP: Chemische Physik und Polymerphysik

CPP 7: SYMPOSIUM: Polymer networks and beyond: From molecular structure to materials and biological functions II

CPP 7.1: Hauptvortrag

Samstag, 5. März 2005, 10:45–11:15, TU C243

Composite Actin Networks — •David Weitz — Dept. of Physics and DEAS, Harvard University, Cambridge, MA 02138, USA

Actin is a semiflexible polymer that is ubiquitous is cells, with actin networks providing much of their mechanical rigidity. A critical component in the formation of these networks is the actin binding proteins that serve to cross-link and bundle the actin filaments. This talk will discuss the mechanical properties of actin filaments comprised of commonly found actin binding proteins, and will explore the dramatic effects these proteins can have on the rheology of the networks. The behavior of reconstituted networks will also be compared to that of living cells.