Hydrodynamic coupling of particle inclusions embedded in curved lipid bilayer membranes

Sigurdsson, Jon Karl; Atzberger, Paul J.

doi:10.1039/c6sm00194g

Title: Hydrodynamic coupling of particle inclusions embedded in curved lipid bilayer membranes

Journal Article · Mon Jun 27 00:00:00 EDT 2016 · Soft Matter

DOI:https://doi.org/10.1039/c6sm00194g· OSTI ID:1437262

Sigurdsson, Jon Karl ^[1]; Atzberger, Paul J. ^[1]

Univ. of California, Santa Barbara, CA (United States)

Here, we develop theory and computational methods to investigate particle inclusions embedded within curved lipid bilayer membranes. We consider the case of spherical lipid vesicles where inclusion particles are coupled through (i) intramembrane hydrodynamics, (ii) traction stresses with the external and trapped solvent fluid, and (iii) intermonolayer slip between the two leaflets of the bilayer. We investigate relative to flat membranes how the membrane curvature and topology augment hydrodynamic responses. We show how both the translational and rotational mobility of protein inclusions are effected by the membrane curvature, ratio of intramembrane viscosity to solvent viscosity, and intermonolayer slip. For general investigations of many-particle dynamics, we also discuss how our approaches can be used to treat the collective diffusion and hydrodynamic coupling within spherical bilayers.

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Research Organization:: University of California, Berkeley, CA (United States); Univ. of California, Santa Barbara, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)

Grant/Contract Number:: SC0009254

OSTI ID:: 1437262

Journal Information:: Soft Matter, Vol. 12, Issue 32; ISSN 1744-683X

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 24 works

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