An atomic-level mechanism for activation of the kinesin molecular motors

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An atomic-level mechanism for activation of the kinesin molecular motors.

Kinesin cytoskeletal motors convert the energy of ATP hydrolysis into stepping movement along microtubules. A partial model of this process has been derived from crystal structures, which show that movement of the motor domain relative to its major microtubule binding element, the switch II helix, is coupled to docking of kinesin's neck linker element along the motor domain. This docking would ...

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Kinesin motors have been studied extensively both experimentally and theoretically. However, the microscopic mechanism of the processive movement of kinesin is still an open question. In this paper, we propose a hand-over-hand model for the processivity of kinesin, which is based on chemical, mechanical, and electrical couplings. In the model the processive movement does not need to rely on the...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2010

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.0911208107