Curvature effects on membrane-mediated interactions of inclusions.
We study the static, long-range interactions of inclusions embedded in lipid membranes. By using a two-dimensional model, we are able to determine explicitly the closed equilibrium shape of the membrane for any value of the distance between the inclusions; our results show that these shapes cannot be obtained by linearizing the equilibrium equations near a referential shape. Moreover, by computing the membrane-mediated force between the inclusions in given static conditions, we also detect the effects on the interactions due to the curvature and the closed geometry of the membrane.
Biscari
Paolo
P
Dipartimento di Matematica, Politecnico di Milano. Piazza Leonardo da Vinci 32, 20133 Milano, Italy. paolo.biscari@polimi.it
Bisi
Fulvio
F
Rosso
Riccardo
R
D006017:Glycolipids / Q000737:chemistry / Q000502:physiology; D008051:Lipid Bilayers; D008563:Membrane Lipids / Q000737:chemistry / Q000502:physiology; D008565:Membrane Proteins / Q000737:chemistry / Q000502:physiology; D008566:Membranes / Q000737:chemistry / Q000502:physiology*; D008954:Models, Biological; D009716:Numerical Analysis, Computer-Assisted; D013499:Surface Properties
D006017:Glycolipids; D008051:Lipid Bilayers; D008563:Membrane Lipids; D008565:Membrane Proteins