Molecular motors are enzymes which are used as cargo transporters in cells. In this report
the motor protein kinesin is studied. The kinetics of the kinesin molecule are described.
Models for the mechanism in which the chemical energy in the form of ATP is transformed
into mechanical work are discussed. The motion of one of the two cooperarting kinesin
heads is simulated. The head is modelled as a Brownian particle subject to a periodic,
time-dependent potential, which models the energy landscape experienced by the kinesin
head during different states of the stepping cycle. The dependence of the speed and
efficiency of the molecular motor on different load forces is investigated. The actual
relevance of the model used in the simulation is also discussed.
2016. , 16 p.