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Collective dynamics of interacting molecular motors | | O Campās
; Y Kafri
; K B Zeldovich
; J Casademunt
; J-F Joanny
; | | Date: |
21 Jul 2006 | | Journal: | Phys Rev Lett, 97 (3), 038101 | | Abstract: | The collective dynamics of N interacting processive molecular motors are considered theoretically when an external force is applied to the leading motor. We show, using a discrete lattice model, that the force-velocity curves strongly depend on the effective dynamic interactions between motors and differ significantly from those of a simple approach where the motors equally share the force. Moreover, they become essentially independent of the number of motors if N is large enough (N> or approximately 5 for conventional kinesin). We show that a two-state ratchet model has a very similar behavior to that of the coarse-grained lattice model with effective interactions. The general picture is unaffected by motor attachment and detachment events. | | Source: | PubMed, pmid16907545 | | Services: | Forum | Review | Favorites | |
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