AustralieFrV1, Main, Exploration, bibRecord, 007083

Measurement of glucose exclusion from the fully hydrated DOPE inverse hexagonal phase

Identifieur interne : 007083 ( Main/Exploration ); précédent : 007082; suivant : 007084

Measurement of glucose exclusion from the fully hydrated DOPE inverse hexagonal phase

Auteurs : Ben Kent [Australie] ; Christopher J. Garvey [Australie] ; Thomas Lenn [Australie] ; Lionel Porcar [France, États-Unis] ; Vasil M. Garamus [Allemagne] ; Gary Bryant [Australie]

Source :

Soft Matter [ 1744-683X ] ; 2010.

RBID : ISTEX:8D6CBE3810B754BE3F5FD84813E966F17FCE0732

Descripteurs français

Wicri :
- topic : Déshydratation, Glucose.

English descriptors

Abstract

The degree of exclusion of glucose from the inverse hexagonal HII phase of fully hydrated DOPE is determined using contrast variation small angle neutron scattering and small angle X-ray scattering. The presence of glucose is found to favour the formation of the non-lamellar HII phase over the fluid lamellar phase, over a wide range of temperatures, while having no significant effect on the structure of the HII phase. Glucose is preferentially excluded from the lipidwater interface resulting in a glucose concentration in the HII phase of less than half that in the coexisting aqueous phase. The degree of exclusion is quantified and the results are consistent with a hydration layer of pure water adjacent to the lipid head groups from which glucose is excluded. The osmotic gradient created by the difference in glucose concentration is determined and the influence of glucose on the phase behaviour of non-lamellar phase forming lipid systems is discussed.

Url:

https://api.istex.fr/document/8D6CBE3810B754BE3F5FD84813E966F17FCE0732/fulltext/pdf

DOI: 10.1039/b919086d

Affiliations:

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Le document en format XML

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<term>Angle neutron</term>
<term>Biochim</term>
<term>Biophys</term>
<term>Bryant</term>
<term>Contrast variation</term>
<term>Dehydration</term>
<term>Dope</term>
<term>Electron density</term>
<term>Glucose</term>
<term>Glucose concentration</term>
<term>Glucose molecules</term>
<term>Glucose system</term>
<term>Hexagonal phase</term>
<term>Hydrated</term>
<term>Hydrated dope</term>
<term>Hydration</term>
<term>Hydration layer</term>
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<term>Lamellar phase</term>
<term>Length densities</term>
<term>Lipid</term>
<term>Lipid head groups</term>
<term>Lipid phase</term>
<term>Lipid systems</term>
<term>Lipid volume fraction</term>
<term>Local volume fractions</term>
<term>Major research facilities program</term>
<term>National institute</term>
<term>Neutron</term>
<term>Neutron research</term>
<term>Nist center</term>
<term>Osmotic gradient</term>
<term>Overall sugar concentration</term>
<term>Phase behaviour</term>
<term>Phase transition</term>
<term>Phase transitions</term>
<term>Pure water</term>
<term>Results show</term>
<term>Royal society</term>
<term>Sans</term>
<term>Saxs measurements</term>
<term>Several values</term>
<term>Sigma aldrich</term>
<term>Small angle</term>
<term>Small angle region</term>
<term>Soft matter</term>
<term>Square root</term>
<term>Volume fraction</term>
<term>Volume fractions</term>
<term>Water core</term>
<term>Wide range</term>
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<term>Contrast variation</term>
<term>Dehydration</term>
<term>Dope</term>
<term>Electron density</term>
<term>Glucose</term>
<term>Glucose concentration</term>
<term>Glucose molecules</term>
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<term>Hydrated dope</term>
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<term>Hydration layer</term>
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<term>National institute</term>
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<term>Neutron research</term>
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<term>Overall sugar concentration</term>
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<term>Phase transition</term>
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<term>Results show</term>
<term>Royal society</term>
<term>Sans</term>
<term>Saxs measurements</term>
<term>Several values</term>
<term>Sigma aldrich</term>
<term>Small angle</term>
<term>Small angle region</term>
<term>Soft matter</term>
<term>Square root</term>
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<term>Volume fractions</term>
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<front><div type="abstract">The degree of exclusion of glucose from the inverse hexagonal HII phase of fully hydrated DOPE is determined using contrast variation small angle neutron scattering and small angle X-ray scattering. The presence of glucose is found to favour the formation of the non-lamellar HII phase over the fluid lamellar phase, over a wide range of temperatures, while having no significant effect on the structure of the HII phase. Glucose is preferentially excluded from the lipidwater interface resulting in a glucose concentration in the HII phase of less than half that in the coexisting aqueous phase. The degree of exclusion is quantified and the results are consistent with a hydration layer of pure water adjacent to the lipid head groups from which glucose is excluded. The osmotic gradient created by the difference in glucose concentration is determined and the influence of glucose on the phase behaviour of non-lamellar phase forming lipid systems is discussed.</div>
</front>
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Measurement of glucose exclusion from the fully hydrated DOPE inverse hexagonal phase

Measurement of glucose exclusion from the fully hydrated DOPE inverse hexagonal phase

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

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