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52. 


Filament depolymerization by motor molecules



G. A. Klein, K. Kruse, G. Cuniberti, and F. Jülicher

Physical Review Letters 94, 108102 (2005)

Selected for the March 15, 2005 issue of the
Virtual Journal of Biological Physics Research
.

Motor proteins that specifically interact with the ends of cytoskeletal filaments can induce filament depolymerization. A phenomenological description of this process is presented. We show that under certain conditions motors dynamically accumulate at the filament ends. We compare simulations of two microscopic models to the phenomenological description. The depolymerization rate can exhibit maxima and dynamic instabilities as a function of the bulk motor density for processive depolymerization. We discuss our results in relation to experimental studies of Kin-13 family motor proteins.



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doi absolute link10.1103/PhysRevLett.94.108102
online abstract at the publisher site
publisher site (ISSN:1079-7114)
online abstractarXiv preprint: q-bio.SC/0501032
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seleceted abstractVJ Nanoscale Science & Technology entry
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IF(2005): 7.489


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