論文

査読有り 国際誌
2018年2月22日

A gold nano-electrode for single ion channel recordings.

Nanoscale
  • Daichi Okuno
  • ,
  • Minako Hirano
  • ,
  • Hiroaki Yokota
  • ,
  • Junya Ichinose
  • ,
  • Takamitsu Kira
  • ,
  • Taiki Hijiya
  • ,
  • Chihiro Uozumi
  • ,
  • Masahiro Yamakami
  • ,
  • Toru Ide

10
8
開始ページ
4036
終了ページ
4040
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1039/c7nr08098k

The artificial bilayer single channel recording technique is commonly used to observe the detailed physiological 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 developed a novel artificial bilayer single channel recording technique in which solubilized ion channel proteins immobilized on a gold nano-electrode are directly incorporated into a lipid bilayer at the same time as the bilayer is formed at the tip of it on coming in contact with an aqueous-oil interface. Using this technique, we measured the single channel currents of several types of channels including KcsA, MthK, hBK and P2X4. This technique requires only one action to simultaneously form the bilayers and reconstitute the channels into the membranes. This simplicity greatly increases the measurement efficiency and allows the technique to potentially be combined with high-throughput screening devices.

リンク情報
DOI
https://doi.org/10.1039/c7nr08098k
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29431813
ID情報
  • DOI : 10.1039/c7nr08098k
  • PubMed ID : 29431813

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