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Sensing size through clustering in non-equilibrium membranes and the control of membrane-bound enzymatic reactions
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Vagne, Quentin, Turner, Matthew S. and Sens, Pierre (2015) Sensing size through clustering in non-equilibrium membranes and the control of membrane-bound enzymatic reactions. PLoS One, 10 (12). e0143470. doi:10.1371/journal.pone.0143470 ISSN 1932-6203.
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Official URL: http://dx.doi.org/10.1371/journal.pone.0143470
Abstract
The formation of dynamical clusters of proteins is ubiquitous in cellular membranes and is in part regulated by the recycling of membrane components. We show, using stochastic simulations and analytic modeling, that the out-of-equilibrium cluster size distribution of membrane components undergoing continuous recycling is strongly influenced by lateral confinement. This result has significant implications for the clustering of plasma membrane proteins whose mobility is hindered by cytoskeletal “corrals” and for protein clustering in cellular organelles of limited size that generically support material fluxes. We show how the confinement size can be sensed through its effect on the size distribution of clusters of membrane heterogeneities and propose that this could be regulated to control the efficiency of membrane-bound reactions. To illustrate this, we study a chain of enzymatic reactions sensitive to membrane protein clustering. The reaction efficiency is found to be a non-monotonic function of the system size, and can be optimal for sizes comparable to those of cellular organelles.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
Journal or Publication Title: | PLoS One | ||||||||
Publisher: | Public Library of Science | ||||||||
ISSN: | 1932-6203 | ||||||||
Official Date: | 14 December 2015 | ||||||||
Dates: |
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Volume: | 10 | ||||||||
Number: | 12 | ||||||||
Article Number: | e0143470 | ||||||||
DOI: | 10.1371/journal.pone.0143470 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) |
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