通过以质子驱动的DNA分子电机对单个合成纳米孔进行隔离
Fan Xia1, Wei Guo, Youdong Mao
1Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
Journal of the American Chemical Society
|June 11, 2008
概括
研究人员开发了一种合成纳米孔-DNA系统,模仿蛋白质离子通道. 该系统使用DNA电机可逆控制通过固态纳米孔的离子流,从而实现新的纳米设备应用.
科学领域:
- 生物模拟纳米技术纳米技术
- 分子机器分子机器
- 固态纳米孔是一种固态纳米孔.
背景情况:
- 基于蛋白质的离子通道在细胞电路中至关重要,但由于脂质膜的要求,在纳米设备中受到限制.
- 现有的蛋白质通道与纳米设备不完全兼容,因为很难建立脂质膜.
研究的目的:
- 创建一个合成纳米孔系统,克服基于蛋白质的通道的局限性.
- 开发一个可切换的纳米孔系统,使用DNA电机用于纳米设备应用.
主要方法:
- 合成纳米孔DNA系统与固定DNA电机的制造.
- 固态形纳米孔的可逆门通过切换DNA运动结构.
- 高 (在状态) 和低 (在状态之外) 电导状态的表征.
主要成果:
- 使用DNA电机证明了纳米孔的可逆关口,实现了不同的高和低导电状态.
- 当DNA分子长度与纳米孔尖端直径相匹配时,确定了最佳的封闭效率.
- 该系统作为可切换蛋白质制造的纳米孔通道的人工对应器.
结论:
- 合成纳米孔-DNA系统为纳米设备提供了蛋白质通道的可行替代方案.
- 这种DNA电机驱动的纳米孔开关概念可以扩展到其他生物分子,用于先进的纳米机器.
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