Tetrahydropyran-Amino Acids: Novel Building Blocks for Gramicidin-Hybrid Ion Channels
作者:Sabine Schröder、Anna K. Schrey、Andrea Knoll、Philipp Reiß、Burkhard Ziemer、Ulrich Koert
DOI:10.1002/ejoc.200600068
日期:2006.6
a δ-amino acid has been achieved starting from N-Boc-leucinal. The THP amino acid was incorporated into peptide sequences and the structural consequences were studied by X-ray crystallography and NMR analysis. Single-channel current measurements showed that the THP amino acid is a suitable substitute for positions 11 and 12 of the gramicidin ion channel. The resulting hybrid ion channel revealed Eisenman
从 N-Boc-亮氨酸开始,已经实现了带有 δ-氨基酸的顺式-2,6-二取代四氢吡喃的立体选择性合成。THP 氨基酸被纳入肽序列,并通过 X 射线晶体学和 NMR 分析研究结构结果。单通道电流测量表明,THP 氨基酸是短杆菌肽离子通道 11 和 12 位的合适替代品。由此产生的混合离子通道显示了 Eisenman I 离子选择性和通道停留时间的离子依赖性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)