RT Journal Article
T1 Molecular motor efficiency is maximized in the presence of both power-stroke and rectification
A1 Schmitt, R. K.
A1 Rodríguez Parrondo, Juan Manuel
A1 Linke, H.
A1 Johansson, J.
AB We present a model for a feedback-controlled ratchet consisting of a Brownian particle and a moving, finite barrier that is shifted by an external agent depending on the position of the particle. By modifying the value of a single parameter of the feedback protocol, the model can act either as a pure rectifier, a power-stroke (PS) motor, or a combination of both. Interestingly, in certain situations the motor reaches a maximum efficiency for an intermediate value of that parameter, i.e., for a combination of the information ratchet and the PS mechanisms. We relate our results to the biological motors kinesin, myosin II, and myosin V, finding that these motors operate in a regime of length scales and forces where the efficiency is maximized for a combination of rectification and PS mechanisms.
PB IOP Publishing
SN 1367-2630
YR 2015
FD 2015-06-15
LK https://hdl.handle.net/20.500.14352/24182
UL https://hdl.handle.net/20.500.14352/24182
LA eng
NO ©2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.The research leading to these results has received funding from the European Union Seventh Framework program (FP7/2007-2013) under grant agreement nr 308850 (project acronym INFERNOS) and by the Swedish Research Council. J M R P gratefully acknowledges the Pufendorf Institute at Lund university for its hospitality at the beginning of this project and financial support from the Spanish MINECO Grant ENFASIS (FIS2011-22644).
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO)
NO Swedish Research Council
DS Docta Complutense
RD 12 abr 2025