期刊
LANGMUIR
卷 26, 期 11, 页码 8540-8543出版社
AMER CHEMICAL SOC
DOI: 10.1021/la9045594
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资金
- Ministry of Education, Culture, Sports, Science, and Technology of Japan
Single molecule imaging of working ion-channels is much more difficult than that of water-soluble proteins because of the fragile nature of membranes and lateral diffusion of particles in the membranes, which does not allow fluorescent contamination for optical single channel recording. In this report, we reconstituted maxi-potassium channels from porcine uterine smooth muscle into artificial planar hi layers formed on poly(ethylene glycol) (PEG) modified glass and performed simultaneous optical and electrical recording of the single channels. The channels were immobilized in the membranes by anchoring to PEG molecules on the glass. The technique developed in this study should pave the way for single molecule pharmacology of ion-channels.
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