Methods and compositions for the generation of polypeptides having varied material properties are disclosed herein. Methods include means for initiating the polymerization of aminoacid-N-carboxyanhydride (NCA) monomer by combining the monomer with an amido-containing metallacycle, for making self assembling amphiphilic block copolypeptides and related protocols for adding oligo(ethyleneglycol) functionalized aminoacid-N-carboxyanhydrides (NCAs) to polyaminoacid chains. Additional methods include means of adding an end group to the carboxy terminus of a polyaminoacid chain by reacting an alloc-protected amino acid amide with a transition metal-donor ligand complex to forming an amido-amidate metallacycle for use in further polymerization reactions. Novel compositions for use in peptide synthesis and design including five and six membered amido-containing metallacycles and block copolypeptides are also disclosed.
本文揭示了用于生成具有多种材料特性的
多肽的方法和组合物。方法包括通过将
氨基酸-N-
羧酸酐(NCA)单体与含有酰胺基的
金属环相结合来启动单体的聚合,以制备自组装的两亲性嵌段共聚
多肽,并涉及将寡聚
乙二醇功能化的
氨基酸-N-
羧酸酐(NCAs)添加到聚
氨基酸链中的相关协议。另外的方法包括通过将保护的
氨基酸酰胺与过渡
金属供体
配体复合物反应以形成酰胺酰胺
金属环,从而向聚
氨基酸链的羧基末端添加末端基,以供进一步的聚合反应使用。还揭示了用于肽合成和设计的新型组合物,包括五元和六元含酰胺基的
金属环和嵌段共聚
多肽。