Fluctuation spectrum of quasispherical membranes with force-dipole activity

Abstract

The fluctuation spectrum of a quasi-spherical vesicle with active membrane proteins is calculated. The activity of the proteins is modeled as the proteins pushing on their surroundings giving rise to non-local force distributions. Both the contributions from the thermal fluctuations of the active protein densities and the temporal noise in the individual active force distributions of the proteins are taken into account. The noise in the individual force distributions is found to become significant at short wavelengths.

arXiv comment9 pages, 2 figures, minor changes and additions

References in corpus (4)

• Active Membrane Fluctuations Studied by Micropipet Aspiration
• Dynamics of shape fluctuations of quasi-spherical vesicles revisited
• A General Theory of Non-equilibrium Dynamics of Lipid-protein Fluid Membranes
• Mechanics of non-planar membranes with force-dipole activity

Cited by in corpus (7)

• Active Contact Forces Drive Non-Equilibrium Fluctuations in Membrane Vesicles
• Effective zero-thickness model for a conductive membrane driven by an electric field
• Effective tension and fluctuations in active membranes
• Descriptions of membrane mechanics from microscopic and effective two-dimensional perspectives
• Mechanics of non-planar membranes with force-dipole activity
• Elastic moderation of intrinsically applied tension in lipid membranes
• Ion pump activity generates fluctuating electrostatic forces in biomembranes