4.6 Article

Biomimetic Triblock Copolymer Membrane Arrays: A Stable Template for Functional Membrane Proteins

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LANGMUIR
卷 25, 期 18, 页码 10447-10450

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AMER CHEMICAL SOC
DOI: 10.1021/la902417m

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  1. STREP [C.T-2006-033234]
  2. Danish National Advanced Technology Foundation [023-2007-1]
  3. Danish National Research Foundation

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It is demonstrated that biomimetic stable triblock copolymer membrane arrays can be prepared using a scaffold containing 64 apertures of 300 mu m diameter each. The membranes were made from a stock solution of block copolymers with decane as a solvent using a new deposition method. By using decane, we avoid low molecular weight solvents such as chloroform and toluene, which are strong protein denaturants, The membranes show a low ionic conductance and a long lifetime at room temperature. Contrast phase microscopy shows the presence of a polymer region delimited by a Plateau-Gibbs border similar to what is observed in black lipid membranes. The ion-channel gramicidin A was successfully incorporated into the membrane in a functional form.

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