Orientational transition and complexation of DNA with anionic membranes: weak and intermediate electrostatic coupling

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buir.contributor.authorBüyükdağlı, Şahin
dc.citation.epage062501-1en_US
dc.citation.issueNumber6en_US
dc.citation.spage062501-19en_US
dc.citation.volumeNumber99en_US
dc.contributor.authorBüyükdağlı, Şahinen_US
dc.contributor.authorPodgornik, R.en_US
dc.date.accessioned2020-02-11T07:39:34Z
dc.date.available2020-02-11T07:39:34Z
dc.date.issued2019
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe characterize the role of charge correlations in the adsorption of a short, rodlike anionic polyelectrolyte onto a similarly charged membrane. Our theory reveals two different mechanisms driving the like-charge polyelectrolyte-membrane complexation: In weakly charged membranes, repulsive polyelectrolyte-membrane interactions lead to the interfacial depletion and a parallel orientation of the polyelectrolyte with respect to the membrane; while in the intermediate membrane charge regime, the interfacial counterion excess gives rise to an attractive “salt-induced” image force. This furthermore results in an orientational transition from a parallel to a perpendicular configuration and a subsequent short-ranged like-charge adsorption of the polyelectrolyte to the substrate. A further increase of the membrane charge engenders a charge inversion, originating from surface-induced ionic correlations, that act as a separate mechanism capable of triggering the like-charge polyelectrolyte-membrane complexation over an extended distance interval from the membrane surface. The emerging picture of this complexation phenomenon identifies the interfacial “salt-induced” image forces as a powerful control mechanism in polyelectrolyte-membrane complexation.en_US
dc.identifier.doi10.1103/PhysRevE.99.062501en_US
dc.identifier.issn2470-0045
dc.identifier.urihttp://hdl.handle.net/11693/53255
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1103/PhysRevE.99.062501en_US
dc.source.titlePhysical Review Een_US
dc.subjectAdsorptionen_US
dc.subjectBiomolecular interactionsen_US
dc.subjectDepletion interactionsen_US
dc.subjectElectric field effectsen_US
dc.subjectElectrostatic interactionsen_US
dc.subjectPolymer conformation changesen_US
dc.subjectThermodynamicsen_US
dc.titleOrientational transition and complexation of DNA with anionic membranes: weak and intermediate electrostatic couplingen_US
dc.typeArticleen_US

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