منابع مشابه
A model for processivity of molecular motors
We propose a two-dimensional model for a complete description of the dynamics of molecular motors, including both the processive movement along track filaments and the dissociation from the filaments. The theoretical results on the distributions of the run length and dwell time at a given ATP concentration, the dependences of mean run length, mean dwell time and mean velocity on ATP concentrati...
متن کاملThe network model of molecular motors
Molecular motors are biogenic force generators acting in the nanometer range. They convert chemical energy into mechanical work and move along filamentous structures. In this research, we will discuss the velocity of molecular motors, in framework of a mechanochemical network theory. Our network model is based on the distinct mechanochemical states of molecular motors. It can be regarded as a g...
متن کاملA model for hand-over-hand motion of molecular motors
The dynamics of molecular motors is an important topic in biophysics and nanotechnology. In the living and in the artificial nanoscale world fast non-diffusive directed transport or rotary motion constitute key ingredients of any complex structure. Molecular motors are the “nanomachines” which perform these tasks [1, 2, 3, 4]. This definition involves a considerable amount of different molecule...
متن کاملFluctuation theorem for the flashing ratchet model of molecular motors.
Molecular motors convert chemical energy derived from the hydrolysis of adenosine triphosphate (ATP) into mechanical energy. A well-studied model of a molecular motor is the flashing ratchet model. We show that this model exhibits a fluctuation relation known as the Gallavotti-Cohen symmetry. Our study highlights the fact that the symmetry is present only if the chemical and mechanical degrees ...
متن کاملA Stochastic Markov Model for Coordinated Molecular Motors
Many cell functions are accomplished thanks to intracellular transport mechanisms of macromolecules along filaments. Molecular motors such as dynein or kinesin are proteins playing a primary role in these processes. The behavior of such proteins is quite well understood when there is only one of them moving a cargo particle. Indeed, numerous in vitro experiments have been performed to derive ac...
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ژورنال
عنوان ژورنال: Physica A: Statistical Mechanics and its Applications
سال: 1999
ISSN: 0378-4371
DOI: 10.1016/s0378-4371(98)00662-1