Entropy driven key-lock assembly

Details Entropy driven key-lock assembly Entropy driven key-lock assembly

2010-10-14

arxiv.org/abs/1010.3000v2

J. Chem. Phys. 129, 111101 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The effective interaction between a sphere with an open cavity (lock) and a spherical macroparticle (key), both immersed in a hard sphere fluid, is studied by means of Monte Carlo simulations. As a result, a 2d map of the key-lock effective interaction potential is constructed, which leads to the proposal of a self-assembling mechanism: there exists trajectories through which the key-lock pair could assemble avoiding trespassing potential barriers. Hence, solely the entropic contribution can induce their self-assembling even in the absence of attractive forces. This study points out the solvent contribution within the underlying mechanisms of substrate-protein assembly/disassembly processes, which are important steps of the enzyme catalysis and protein mediated transport.

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