Chemical-induced pH-mediated molecular switch.

Chemical-induced pH-mediated molecular switch.
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DOI:
10.1021/ac2019393
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发表时间:
2011-10-15
影响因子:
7.4
通讯作者:
Guan, Xiyun
Guan, Xiyun
中科院分区:
化学1区
文献类型:
--
作者:
Jayawardhana, Dilani A.;Sengupta, Mrinal K.;Krishantha, D. M. Milan;Gupta, Jyoti;Armstrong, Daniel W.;Guan, Xiyun

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跨膜蛋白α-溶血素孔已被用于开发超灵敏的生物传感器,研究生物分子折叠和展开,研究共价和非共价键相互作用,以及探测酶动力学。本文报道了在α-溶血素孔中加入离子液体四甲基氯化磷溶液,可以通过调节溶液的pH值来控制α-溶血素通道的打开或关闭。这种方法可以用来开发一种新的分子开关来调节分子运输,并且应该作为一种“智能”药物递送方法找到潜在的应用。
The transmembrane protein α-hemolysin pore has been used to develop ultrasensitive biosensors, study biomolecular folding and unfolding, investigate covalent and non-covalent bonding interactions, and probe enzyme kinetics. Here, we report that by addition of ionic liquid tetrakis(hydroxymethyl)phosphonium chloride solution to the α-hemolysin pore, the α-hemolysin channel can be controlled open or closed by adjusting the pH of the solution. This approach can be employed to develop a novel molecular switch to regulate molecular transport, and should find potential applications as a ‘smart’ drug delivery method.
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