Rheology of two-dimensional F-actin networks associated with a lipid interface.
We report on the surface rheology of cross-linked F-actin networks associated with a lipid monolayer at the air-water interface of a Langmuir monolayer. The rheological measurements are made using a Couette cell. These data demonstrate that the network has a finite elastic modulus that grows as a function of the cross-linking concentration. We also note that under steady-state flow the system behaves as a power-law fluid in which the effective viscosity decreases with imposed shear.
Walder
Robert
R
Department of Physics & Astronomy, University of California, Irvine, California 92697, USA.
Levine
Alex J
AJ
Dennin
Michael
M
D000199:Actins / Q000737:chemistry* / Q000648:ultrastructure*; D003198:Computer Simulation; D003598:Cytoskeletal Proteins / Q000737:chemistry*; D004548:Elasticity; D008051:Lipid Bilayers / Q000737:chemistry*; D044085:Microfluidics / Q000379:methods*; D008956:Models, Chemical; D008958:Models, Molecular; D046912:Multiprotein Complexes / Q000737:chemistry / Q000648:ultrastructure; D011487:Protein Conformation; D013314:Stress, Mechanical; D013499:Surface Properties; D014783:Viscosity
D000199:Actins; D003598:Cytoskeletal Proteins; D008051:Lipid Bilayers; D046912:Multiprotein Complexes