ArticleInternational journal of molecular sciences2013
Monovalent ions and water dipoles in contact with dipolar zwitterionic lipid headgroups-theory and MD simulations.
Article in International journal of molecular sciences, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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Who cites it
7 citing papers in PubMed, 25 citations in OpenAlex.
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- Membrane potential generated by ion adsorption.Membranes · 2014Article
- Effects of magnetic cobalt ferrite nanoparticles on biological and artificial lipid membranes.International journal of nanomedicine · 2014Article
- The role of extracellular vesicles in phenotypic cancer transformation.Radiology and oncology · 2013Review
- Interaction between dipolar lipid headgroups and charged nanoparticles mediated by water dipoles and ions.International journal of molecular sciences · 2013Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The lipid bilayer is a basic building block of biological membranes and can be pictured as a barrier separating two compartments filled with electrolyte solution. Artificial planar lipid bilayers are therefore commonly used as model systems to study the physical and electrical properties of the cell membranes in contact with electrolyte solution. Among them the glycerol-based polar phospholipids which have dipolar, but electrically neutral head groups, are most frequently used in formation of artificial lipid bilayers. In this work the electrical properties of the lipid layer composed of zwitterionic lipids with non-zero dipole moments are studied theoretically. In the model, the zwitterionic lipid bilayer is assumed to be in contact with aqueous solution of monovalent salt ions. The orientational ordering of water, resulting in spatial variation of permittivity, is explicitly taken into account. It is shown that due to saturation effect in orientational ordering of water dipoles the relative permittivity in the zwitterionic headgroup region is decreased, while the corresponding electric potential becomes strongly negative. Some of the predictions of the presented mean-field theoretical consideration are critically evaluated using the results of molecular dynamics (MD) simulation.
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Registered trials
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