Impact of chemical and structural anisotropy on the electrophoretic mobility of spherical soft multilayer particles: the case of bacteriophage MS2

Biophysical Journal
Jérémie LangletJérôme F L Duval

Abstract

We report a theoretical investigation of the electrohydrodynamic properties of spherical soft particles composed of permeable concentric layers that differ in thickness, soft material density, chemical composition, and flow penetration degree. Starting from a recent numerical scheme developed for the computation of the direct-current electrophoretic mobility (mu) of diffuse soft bioparticles, the dependence of mu on the electrolyte concentration and solution pH is evaluated taking the known three-layered structure of bacteriophage MS2 as a supporting model system (bulk RNA, RNA-protein bound layer, and coat protein). The electrokinetic results are discussed for various layer thicknesses, hydrodynamic flow penetration degrees, and chemical compositions, and are discussed on the basis of the equilibrium electrostatic potential and hydrodynamic flow field profiles that develop within and around the structured particle. This study allows for identifying the cases where the electrophoretic mobility is a function of the inner structural and chemical specificity of the particle and not only of its outer surface properties. Along these lines, we demonstrate the general inapplicability of the notions of zeta potential (zeta) and surface...Continue Reading

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Citations

Sep 1, 2012·Journal of Biological Physics·Anže Lošdorfer BožičRudolf Podgornik
Jun 26, 2013·Food and Environmental Virology·Hasna AmdiouniLeena Maunula
Jul 28, 2012·Environmental Science & Technology·Leonardo Gutierrez, Thanh H Nguyen
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Jul 19, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Jérôme F L DuvalRalf Zimmermann
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Nov 15, 2016·Physical Chemistry Chemical Physics : PCCP·Elise RotureauJérôme F L Duval
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Jul 24, 2020·Journal of Biophotonics·Aziz BerchtikouTsuneyuki Ozaki
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Jun 18, 2014·Physical Chemistry Chemical Physics : PCCP·Jenny Merlin, Jérôme F L Duval
Dec 29, 2019·Scientific Reports·Chia-Yu ChangYing-Huang Lai
Sep 27, 2020·Applied and Environmental Microbiology·Joe Heffron, Brooke K Mayer
Nov 15, 2020·Applied and Environmental Microbiology·Joe Heffron, Brooke K Mayer
Oct 9, 2019·Journal of Colloid and Interface Science·Saurabh K MauryaJérôme F L Duval
Apr 26, 2019·The Science of the Total Environment·Anna E MerrymanNavid B Saleh

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