作者:Adam C. Hall、Cristina Suarez、Anindita Hom-Choudhury、Aida N. A. Manu、C. Dennis Hall、Gregory J. Kirkovits、Ion Ghiriviga
DOI:10.1039/b304838a
日期:——
The synthesis, cation binding and transmembrane conductive properties of a novel group of synthetic ion channels containing a redox-active centre are described. Experiments using a black lipid membrane preparation revealed that these compounds function effectively as ion channels. Subsequent 23Na NMR spectroscopy studies focused on a synthesized ion channel with a ferrocene centre. When incorporated in vesicular bilayers, this channel was demonstrated to support a Na+ flux that was at least six times faster than ion transport by monensin. Since oxidation of the ferrocene moiety completely inhibited the Na+ transport, the redox-active centre provides a potential mechanism for controlling ion flux.
描述了一组含有氧化还原活性中心的新型合成离子通道的合成、阳离子结合和跨膜传导特性。使用黑色脂质膜制剂的实验表明,这些化合物可以有效地发挥离子通道的作用。随后的 23Na NMR 光谱研究重点关注具有二茂铁中心的合成离子通道。当纳入囊泡双层时,该通道被证明支持 Na+ 通量,其速度比莫能菌素的离子传输速度至少快六倍。由于二茂铁部分的氧化完全抑制了Na+的传输,因此氧化还原活性中心提供了控制离子通量的潜在机制。