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Title: Activating membranes
Authors: Maitra, Ananyo
Srivastava, Pragya
Rao, Madan
Ramaswamy, Sriram
Issue Date: 27-Jun-2014
Publisher: American Physical Society
Citation: Physical Review Letters, 2014, Vol. 112 p 258101
Abstract: We present a general dynamical theory of a membrane coupled to an actin cortex containing polymerizing filaments with active stresses and currents, and demonstrate that active membrane dynamics [S. Ramaswamy et al., Phys. Rev. Lett. 84, 3494 (2000)] and spontaneous shape oscillations emerge from this description. We also consider membrane instabilities and patterns induced by the presence of filaments with polar orientational correlations in the tangent plane of the membrane. The dynamical features we predict should be seen in a variety of cellular contexts involving the dynamics of the membrane-cytoskeleton composite and cytoskeletal extracts coupled to synthetic vesicles.
Description: Open Access
ISSN: 0031-9007
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Copyright: 2014 American Physical Society
Appears in Collections:Research Papers (TP)

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