The styrene–maleic acid copolymer: a versatile tool in membrane research

Jonas Dorr, Stefan Scheidelaar, Martijn Koorengevel, Juan Dominguez, Marre Schafer, Cornelis Van Walree, J Killian

    Research output: Contribution to journalReview articlepeer-review

    254 Citations (Scopus)


    A new and promising tool in membrane research is the detergent-free solubilization of membrane proteins by styrene–maleic acid copolymers (SMAs). These amphipathic molecules are able to solubilize lipid bilayers in the form of nanodiscs that are bounded by the polymer. Thus, membrane proteins can be directly extracted from cells in a water-soluble form while conserving a patch of native membrane around them. In this review article, we briefly discuss current methods of membrane protein solubilization and stabilization. We then zoom in on SMAs, describe their physico-chemical properties, and discuss their membrane-solubilizing effect. This is followed by an overview of studies in which SMA has been used to isolate and investigate membrane proteins. Finally, potential future applications of the methodology are discussed for structural and functional studies on membrane proteins in a near-native environment and for characterizing protein–lipid and protein–protein interactions.

    Original languageEnglish
    Pages (from-to)3-21
    Number of pages19
    JournalEuropean Biophysics Journal With Biophysics Letters
    Issue number1
    Publication statusPublished - 1 Jan 2016


    • Lipid–protein interactions
    • Lipodisq
    • Membrane proteins
    • Native nanodiscs
    • SMALPs
    • Styrene–maleic acid copolymers


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