How bio-filaments twist membranes.
We study the deformations of a fluid membrane imposed by adhering stiff bio-filaments due to the torques they apply. In the limit of small deformations, we derive a general expression for the energy and the deformation field of the membrane. This expression is specialised to different important cases including closed and helical bio-filaments. In particular, we analyse interface-mediated interactions and membrane wrapping when the filaments apply a local torque distribution on a tubular membrane.
Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France. julien.fierling@ics-cnrs.unistra.fr.
Julien
J
Fierling
Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France. julien.fierling@ics-cnrs.unistra.fr.
Albert
A
Johner
Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France. julien.fierling@ics-cnrs.unistra.fr.
Igor M
IM
Kulić
Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France. julien.fierling@ics-cnrs.unistra.fr and Equipe BioPhysStat, Université de Lorraine, 1 boulevard Arago, 57070 Metz, France.
Hervé
H
Mohrbach
Institut Charles Sadron, CNRS-UdS, 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France. julien.fierling@ics-cnrs.unistra.fr and Equipe BioPhysStat, Université de Lorraine, 1 boulevard Arago, 57070 Metz, France.
Martin Michael
MM
Müller
D003599:Cytoskeleton / Q000737:chemistry*; D008566:Membranes / Q000737:chemistry*; D019415:Torque