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Non-equilibrium raft-like membrane domains under continuous recycling | | Matthew S. Turner
; Pierre Sens
; Nicholas D. Socci
; | | Date: |
30 Mar 2005 | | Subject: | Soft Condensed Matter; Subcellular Processes | cond-mat.soft q-bio.SC | | Abstract: | We present a model for the kinetics of spontaneous membrane domain (raft) assembly that includes the effect of membrane recycling ubiquitous in living cells. We show that the domains have a broad power-law distribution with an average radius that scales with the 1/4 power of the domain lifetime when the line tension at the domain edges is large. For biologically reasonable recycling and diffusion rates the average domain radius is in the tens of nm range, consistent with observations. This represents one possible link between signaling (involving rafts) and traffic (recycling) in cells. Finally, we present evidence that suggests that the average raft size may be the same for all scale-free recycling schemes. | | Source: | arXiv, cond-mat/0503692 | | Services: | Forum | Review | PDF | Favorites | |
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