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Interfacial bridge-mediated electron transfer: mechanistic analysis based on electrochemical kinetics and theoretical modelling

Water at biomolecular binding interfaces

Cross sections and low temperature rate coefficients for the H + CH⁺ reaction: a quasiclassical trajectory study

Millimetre wave spectroscopy of PANHs: phenanthridine

Mid-infrared vibrational spectra of discrete acetone-ligated cerium hydroxide cations

Pyridyne radical cations produced by photodissociation of Mg^˙+(multifluoro-pyridine) complexes: A combined experimental and theoretical study

Sequential multiphoton absorption enhancement induced by zinc complexation in functionalized distyrylbenzene analogs

Heterogeneous conversion of calcite aerosol by nitric acid

Modeling of hydrocarbon sensors based on p-type semiconducting perovskites

Molecular dynamics simulation of an archaeal lipid bilayer with sodium chloride

Optical switching of coupled plasmons of Ag-nanoparticles by photoisomerisation of an azobenzene ligand

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Molecular dynamics simulation of an archaeal lipid bilayer with sodium chloride

Content Provider	Royal Society of Chemistry (RSC)
Author	Shinoda, Wataru Shinoda, Keiko Mikami, Masuhiro
Copyright Year	2007
Abstract	We have performed molecular dynamics simulations of a bilayer formed by the synthetic archaeal lipid, diphytanyl phosphatidylcholine, in NaCl electrolyte solution at four different concentrations (0–4 M) to investigate how structural and dynamic properties of the model archaeal membrane are changed due to the ionic strength of the solution. The archaeal lipid bilayer shows minor changes in their physical properties, indicating the unusual high stability of the membrane against salt, though small reductions of molecular area and lateral diffusion of the lipid are detected at the highest electrolyte concentration of 4 M. Sodium ions penetrate to the ether-rich region, where the ions are likely bound to the ether oxygen in the sn-1 chain rather than to that in the sn-2 chain. The observed salt bridges among two or three neighboring lipids account for the small reduction in the molecular area. The bound ions together with the counter (chloride) ions give rise to a diffusive electric double layer; as a result, the membrane dipole potential is slightly increased with increasing NaCl concentration.
Starting Page	643
Ending Page	650
Page Count	8
File Format	HTM / HTML PDF
ISSN	14639076
Volume Number	9
Issue Number	5
Journal	Physical Chemistry Chemical Physics
DOI	10.1039/b611543h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Oxygen Chloride Electrolyte Cell membrane Ether Ionic strength Molecular dynamics Phosphatidylcholine Lipid bilayer Dipole Lipid
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry

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