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Hydrodynamic Interactions Introduce Differences in the Behaviour of a Ratchet Dimer Brownian Motor
Departamento de Fsica Aplicada I, Facultad de Ciencias Físicas, Universidad Complutense, Madrid, Spain
- 1 Departamento de Fsica Aplicada I, Facultad de Ciencias Físicas, Universidad Complutense, Madrid, Spain
Journal of Biomaterials and Nanobiotechnology·Volume 06 (2015)·Pages 81–90·Published 12 March 2015·DOI10.4236/jbnb.2015.62008
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Abstract
We use the Brownian dynamics with hydrodynamic interactions simulation in order to describe the movement of an elastically coupled dimer Brownian motor in a ratchet potential. The only external forces considered in our system were the load, the random thermal noise and an unbiased thermal fluctuation. We observe differences in the dynamic behaviour if hydrodynamic interactions are considered as compared with the case without them. In conclusion, hydrodynamic interactions influence substantially the dynamics of a ratchet dimer Brownian motor; consequently they have to be considered in any theory where the molecular motors are in a liquid medium.
KeywordsHydrodynamic InteractionsMotor ProteinsMolecular DynamicsBrownian DynamicsFluctuation PhenomenaRandom ProcessesNoiseBrownian Motion
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