A Simple Method for Ion Channel Recordings Using Fine Gold Electrode

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  • OKUNO Daichi
    Laboratory for Cell Dynamics Observation, Quantitative Biology Center, Riken
  • HIRANO Minako
    The Graduate School for the Creation of New Photonics Industries
  • YOKOTA Hiroaki
    The Graduate School for the Creation of New Photonics Industries
  • ONISHI Yukiko
    Laboratory for Cell Dynamics Observation, Quantitative Biology Center, Riken
  • ICHINOSE Junya
    Graduate School of Natural Science and Technology, Okayama University
  • IDE Toru
    Graduate School of Natural Science and Technology, Okayama University

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抄録

The artificial bilayer single-channel recording technique is commonly used to observe detailed pharmacological properties of various ion channel proteins. It permits easy control of the solution and membrane lipid composition, and is also compatible with pharmacological screening devices. However, its use is limited due to low measurement efficiency. Here, we develop a novel artificial bilayer single-channel recording technique in which bilayers are made and channels are reconstituted into the membranes by contacting a gold electrode to the lipid-solution interface. Using this technique, we measured the single-channel currents of two channel-forming peptides, gramicidin and alamethicin, and a channel-forming protein, α-hemolysin. This technique requires only one action, allowing the technique to potentially be combined with high-throughput screening devices.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 32 (12), 1353-1357, 2016

    社団法人 日本分析化学会

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