Papers

International journal
Feb 22, 2018

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

Volume
10
Number
8
First page
4036
Last page
4040
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1039/c7nr08098k
Publisher
ROYAL SOC CHEMISTRY

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.

Link information
DOI
https://doi.org/10.1039/c7nr08098k
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29431813
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000426148500053&DestApp=WOS_CPL
ID information
  • DOI : 10.1039/c7nr08098k
  • ISSN : 2040-3364
  • eISSN : 2040-3372
  • Pubmed ID : 29431813
  • Web of Science ID : WOS:000426148500053

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