Formation and Interaction of Membrane Tubes

Details Formation and Interaction of Membrane Tubes Formation and Interaction of Membrane Tubes

2002-05-29

arxiv.org/abs/cond-mat/0205630v1

Phys. Rev. Lett. 88, 238101 (2002)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.88.238101

We show that the formation of membrane tubes (or membrane tethers), which is a crucial step in many biological processes, is highly non-trivial and involves first order shape transitions. The force exerted by an emerging tube is a non-monotonic function of its length. We point out that tubes attract each other, which eventually leads to their coalescence. We also show that detached tubes behave like semiflexible filaments with a rather short persistence length. We suggest that these properties play an important role in the formation and structure of tubular organelles.

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