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Biophys J, July 2002, p. 299-308, Vol. 83, No. 1

Adhesion of Nanoparticles to Vesicles: A Brownian Dynamics Simulation

Hiroshi Noguchi and Masako Takasu

Department of Applied Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan

We studied the interaction of bilayer vesicles and adhesive nanoparticles using a Brownian dynamics simulation. The nanoparticles are simple models of proteins or colloids. The adhering nanoparticle induces the morphological change of the vesicle: budding, formation of two vesicles in which only outer monolayers are connected, and fission. We also show that the nanoparticle promotes the fusion process: fusion-pore opening from a stalk intermediate, a neck-like structure that only connects outer monolayers of two vesicles. The nanoparticle bends the stalk, and induces the pore opening.

Biophys J, July 2002, p. 299-308, Vol. 83, No. 1
© 2002 by the Biophysical Society   0006-3495/02/07/299/10  $2.00


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