ThuliumV1, Ncbi, Merge, bibRecord, 000C65

Magnetically aligned phospholipid bilayers with positive ordering: a new model membrane system.

Identifieur interne : 000C65 ( Ncbi/Merge ); précédent : 000C64; suivant : 000C66

Magnetically aligned phospholipid bilayers with positive ordering: a new model membrane system.

Auteurs : R S Prosser ; J S Hwang ; R R Vold

Source :

Biophysical Journal [ 0006-3495 ] ; 1998.

RBID : PMC:1299583

Descripteurs français

KwdFr :
- Conformation moléculaire, Dimyristoylphosphatidylcholine (), Double couche lipidique (), Magnétisme, Micelles, Modèles biologiques, Modèles moléculaires, Résonance magnétique nucléaire biomoléculaire, Terres rares, Thermodynamique, Éther-phospholipides ().
MESH :
- Conformation moléculaire, Dimyristoylphosphatidylcholine, Double couche lipidique, Magnétisme, Micelles, Modèles biologiques, Modèles moléculaires, Résonance magnétique nucléaire biomoléculaire, Terres rares, Thermodynamique, Éther-phospholipides.

English descriptors

KwdEn :
- Dimyristoylphosphatidylcholine (chemistry), Lipid Bilayers (chemistry), Magnetics, Metals, Rare Earth, Micelles, Models, Biological, Models, Molecular, Molecular Conformation, Nuclear Magnetic Resonance, Biomolecular, Phospholipid Ethers (chemistry), Thermodynamics.
MESH :
- chemical , chemistry : Dimyristoylphosphatidylcholine, Lipid Bilayers, Phospholipid Ethers.
- Magnetics, Metals, Rare Earth, Micelles, Models, Biological, Models, Molecular, Molecular Conformation, Nuclear Magnetic Resonance, Biomolecular, Thermodynamics.

Abstract

A stable smectic phospholipid bilayer phase aligned with the director parallel to the magnetic field can be generated by the addition of certain trivalent paramagnetic lanthanide ions to a bicellar solution of dimyristoylphosphatidylcholine (DMPC) and dihexanoylphosphatidylcholine (DHPC) in water. Suitable lanthanide ions are those with positive anisotropy of their magnetic susceptibility, namely Eu3+, Er3+, Tm3+, and Yb3+. For samples doped with Tm3+, this phase extends over a wide range of Tm3+ concentrations (6-40 mM) and temperatures (35-90 degrees C) and appears to undergo a transition from a fluid nematic discotic to a fluid, but highly ordered, smectic phase at a temperature that depends on the thulium concentration. As a membrane mimetic, these new, positively ordered phospholipid phases have high potential for structural studies using a variety of techniques such as magnetic resonance (EMR and NMR), small-angle x-ray and neutron diffraction, as well as optical and infrared spectroscopy.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1299583

PubMed: 9591667
PubMed Central: 1299583

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PMC:1299583

Le document en format XML

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<term>Micelles</term>
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<front><div type="abstract" xml:lang="en">A stable smectic phospholipid bilayer phase aligned with the director parallel to the magnetic field can be generated by the addition of certain trivalent paramagnetic lanthanide ions to a bicellar solution of dimyristoylphosphatidylcholine (DMPC) and dihexanoylphosphatidylcholine (DHPC) in water. Suitable lanthanide ions are those with positive anisotropy of their magnetic susceptibility, namely Eu3+, Er3+, Tm3+, and Yb3+. For samples doped with Tm3+, this phase extends over a wide range of Tm3+ concentrations (6-40 mM) and temperatures (35-90 degrees C) and appears to undergo a transition from a fluid nematic discotic to a fluid, but highly ordered, smectic phase at a temperature that depends on the thulium concentration. As a membrane mimetic, these new, positively ordered phospholipid phases have high potential for structural studies using a variety of techniques such as magnetic resonance (EMR and NMR), small-angle x-ray and neutron diffraction, as well as optical and infrared spectroscopy.</div>
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Magnetically aligned phospholipid bilayers with positive ordering: a new model membrane system.

Magnetically aligned phospholipid bilayers with positive ordering: a new model membrane system.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki