Coiling of Cylindrical Membrane Stacks with Anchored Polymers
Vidar Frette, Ilan Tsafrir, Marie-Alice Guedeau-Boudeville, Ludovic Jullien, Daniel Kandel, Joel Stavans
Abstract
We study experimentally a coiling instability of cylindrical multilamellar stacks of phospholipid membranes, induced by polymers with hydrophobic anchors grafted along their hydrophilic backbone. We interpret our experimental results in terms of a model, in which local membrane curvature and polymer concentration are coupled. The model predicts the occurence of maximally tight coils above a threshold anchor occupancy. Indeed, only maximally tight coils are observed experimentally. Our system is unique in that coils form in the absence of twist.
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