Effects of jamming on nonequilibrium transport times in nanochannels

Many biological channels perform highly selective transport without direct input of metabolic energy and without transitions from a "closed" to an "open" state during transport. Mechanisms of selectivity of such channels serve as an inspiration for creation of artificial nanomole...

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Bibliographic Details
Published in:Physical review letters 2009-09, Vol.103 (12), p.128103-128103, Article 128103
Main Authors: Zilman, A, Pearson, J, Bel, G
Format: Article
Language:English
Subjects:
Biological Transport
Kinetics
Models, Biological
Nanostructures - chemistry
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Summary:Many biological channels perform highly selective transport without direct input of metabolic energy and without transitions from a "closed" to an "open" state during transport. Mechanisms of selectivity of such channels serve as an inspiration for creation of artificial nanomolecular sorting devices and biosensors. To elucidate the transport mechanisms, it is important to understand the transport on the single molecule level in the experimentally relevant regime when multiple particles are crowded in the channel. In this Letter we analyze the effects of interparticle crowding on the nonequilibrium transport times through a finite-length channel by means of analytical theory and computer simulations.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.103.128103