Microphase separation in nonequilibrium biomembranes

Details Microphase separation in nonequilibrium biomembranes Microphase separation in nonequilibrium biomembranes

2010-10-20

arxiv.org/abs/1010.4127v1

Biology

Quantitative Biology

Subcellular Processes

Scientific paper

Microphase separation of membrane components is thought to play an important role in many physiological processes, from cell signaling to endocytosis and cellular trafficking. Here, we study how variations in the membrane composition can be driven by fluctuating forces. We show that the membrane steady state is not only controlled by the strength of the forces and how they couple to the membrane, but also by their dynamics: In a simple class of models this is captured by a single a correlation time. We conclude that the coupling of membrane composition to normal mechanical forces, such as might be exerted by polymerizing cytoskeleton filaments, could play an important role in controlling the steady state of a cell membrane that exhibits transient microphase separation on lengthscales in the 10-100 nm regime.

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