|
Título:
|
Molecular motor efficiency is maximized in the presence of both power-stroke and rectification
|
|
Autores:
|
Schmitt, R. K. ;
Rodríguez Parrondo, Juan Manuel ;
Linke, H. ;
Johansson, J.
|
|
Tipo de documento:
|
texto impreso
|
|
Editorial:
|
IOP Publishing, 2015-06-15
|
|
Dimensiones:
|
application/pdf
|
|
Nota general:
|
cc_by
info:eu-repo/semantics/openAccess
|
|
Idiomas:
|
|
|
Palabras clave:
|
Estado = Publicado
,
Materia = Ciencias: Física: Física nuclear
,
Tipo = Artículo
|
|
Resumen:
|
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.
|
|
En línea:
|
https://eprints.ucm.es/id/eprint/33364/1/RParrondo%2002%20LIBRE%20%2B%20CC.pdf
|
