Probing Protein-Membrane Interactions Using Solid Supported Membranes

Ann Junghans, Chloe Champagne, Philippe Cayot, Camille Loupiac, Ingo Köper

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)2709-2716
    Number of pages8
    JournalLangmuir
    Volume27
    Issue number6
    DOIs
    Publication statusPublished - 15 Mar 2011

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