A Highly Efficient Type I β-Turn Mimetic Simulating an Asx-Pro-Turn-Like Structure
作者:Andrea Pinsker、Jürgen Einsiedel、Steffen Härterich、Reiner Waibel、Peter Gmeiner
DOI:10.1021/ol201313q
日期:2011.7.1
in protein structures nucleating type I β-turns. By bridging the amino acid side chain in position i with a nitrogen substituent in position i+2 by ring-closing olefin metathesis (RCM), peptide mimetics of type 1 could be developed. NMR based conformational investigations indicated a stable intramolecular H-bond constraining a U-turn conformation that was predicted to simulate a type I β-turn.
已在成核I型β匝的蛋白质结构中以高频率鉴定了Asx-Pro匝。通过闭环烯烃复分解(RCM),通过将位置i的氨基酸侧链与位置i +2的氮取代基桥接,可以开发1型肽模拟物。基于NMR的构象研究表明,稳定的分子内H键约束了U字形构象,该构想被预测为模拟I型β字形。