Synthesis, Preferred Conformation, and Membrane Activity of Medium-Length Peptaibiotics: Tylopeptin B
作者:Marina Gobbo、Claudia Poloni、Marta De Zotti、Cristina Peggion、Barbara Biondi、Gema Ballano、Fernando Formaggio、Claudio Toniolo
DOI:10.1111/j.1747-0285.2009.00920.x
日期:2010.2
The solid‐phase synthesis and full chemical characterization of the medium‐length (14‐amino acid residues) peptaibol with antibiotic properties of tylopeptin B, originally extracted from the fruiting body of the mushroom Tylopilus neofelleus, are described. These data are accompanied by the results on the solution‐phase synthesis via the segment condensation approach of a selected, side‐chain protected
描述了最初从蘑菇Tylopilus neofelleus的子实体中提取的具有酪胺肽B的抗生素特性的中等长度(14个氨基酸残基)肽醇的固相合成和完整化学特征。这些数据都伴随着在溶液相合成的结果通过一个选择的,侧链保护的,模拟的段缩合方法。通过结合使用FTIR吸收,圆二色性和2D-NMR(后一种技术与分子动力学计算相结合)进行的溶液构象分析,得出的结论是,酪蛋白B的3D结构在很大程度上是螺旋形的,并且优先考虑α-或3 10螺旋类型取决于溶剂的性质。螺旋拓扑和(部分)两亲性特征是这种肽生物素所观察到的膜修饰特性的原因。