Synthesis and characterization of a redox-active ion channel supporting cation flux in lipid bilayers
作者:Maia Tsikolia、Adam C. Hall、Cristina Suarez、Zazi O. Nylander、Sarah M. Wardlaw、Molly E. Gibson、Kerry L. Valentine、Louisa N. Onyewadume、Deborah A. Ahove、Maya Woodbury、Margaret M. Mongare、C. Dennis Hall、Zuoquan Wang、Bogdan Draghici、Alan R. Katritzky
DOI:10.1039/b907350g
日期:——
The synthesis, cation binding and transmembrane conductive properties of a novel synthetic ion channel containing a redox-active ferrocene unit are described. Fluorescence spectroscopy was used to demonstrate that the channel supports multiple ion coordination and association constants for 1:1 and 1:2 (channel:cation) coordination for both Na+ and K+ were evaluated. Experiments using a black lipid
描述了一种新型的包含氧化还原活性二茂铁单元的合成离子通道的合成,阳离子结合和跨膜导电性能。荧光光谱用于证明该通道支持多个离子配位和1:1和1:2(通道:阳离子)配位的缔合常数钠+ 和 钾+被评估。使用黑色脂质膜制备物进行的实验表明,该化合物有效地充当了两种化合物的离子通道钠+ 和 钾+。伴随的23 Na NMR光谱研究支持了这一发现,并揭示了Na +通量,比离子迁移速率高至少5倍。莫能菌素。此外,氧化还原活性中心的氧化(铁2+ 到 铁3+)有效地抑制了离子的传输。