6533b830fe1ef96bd1297d09
RESEARCH PRODUCT
Probing Protein−Membrane Interactions Using Solid Supported Membranes
Ann JunghansIngo KöperChloé ChampagneCamille LoupiacPhilippe Cayotsubject
Whey proteinChromatographyChemistryBilayerLipid Bilayersfood and beveragesModel systemLactoglobulinsSurfaces and InterfacesCondensed Matter PhysicsReflectivity[SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/BiophysicsMembraneMembrane interactionBilayer lipid membranesElectrochemistryBiophysicslipids (amino acids peptides and proteins)General Materials ScienceLipid bilayer phase behaviorSpectroscopydescription
International audience; Tethered bilayer lipid membranes have been used as a model system to mimic the interactions between the whey protein β-lactoglobulin and a lipid interface. The approach allowed for a detailed study of the lipid-protein interactions, the results being of possible importance in food and cosmetic applications. For such applications, lipid-protein interactions and the interfacial behavior are vital factors in controlling and manipulating process conditions such as emulsion stabilization and gelification. Lipid composition as well as the structural properties of the protein governed their interactions, which were probed by a combination of surface plasmon spectroscopy, neutron reflectivity, and electrochemical impedance spectroscopy. Comparison of results obtained using native and a partially unfolded protein indicated that the protein preferentially forms loosely packed layers at the lipid interface.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-15 | Langmuir |