期刊
SCIENCE
卷 291, 期 5504, 页码 636-640出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.291.5504.636
关键词
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We describe a heptameric protein pore that has been engineered to accommodate two different cyclodextrin adapters simultaneously within the Lumen of a transmembrane beta barrel. The volume between the adapters is a cavity of similar to 4400 cubic angstroms. Analysis of single-channel recordings reveals that individual charged organic molecules can be pulled into the cavity by an electrical potential. Once trapped, an organic molecule shuttles back and forth between the adapters for hundreds of milliseconds. Such self-assembling nanostructures are of interest for the fabrication of multianalyte sensors and could provide a means to control chemical reactions.
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