Constrained Peptides with Target-Adapted Cross-Links as Inhibitors of a Pathogenic Protein-Protein Interaction
作者:Adrian Glas、David Bier、Gernot Hahne、Christoph Rademacher、Christian Ottmann、Tom N. Grossmann
DOI:10.1002/anie.201310082
日期:2014.2.24
Bioactive conformations of peptides can be stabilized by macrocyclization, resulting in increased target affinity and activity. Such macrocyclic peptides proved useful as modulators of biological functions, in particular as inhibitors of protein–protein interactions (PPI). However, most peptide‐derived PPI inhibitors involve stabilized α‐helices, leaving a large number of secondary structures unaddressed
肽的生物活性构象可以通过大环化来稳定,从而提高靶标亲和力和活性。这种大环肽被证明可作为生物学功能的调节剂,特别是作为蛋白-蛋白相互作用(PPI)的抑制剂。但是,大多数肽衍生的PPI抑制剂都涉及稳定的α螺旋,从而使大量二级结构无法解决。在本文中,我们提出了一种合理的方法来稳定不规则的肽结构,使用疏水性交联取代了关键地参与靶标结合的残基。X射线晶体学和等温滴定量热法阐明了这种相互作用的分子基础。产生的交联肽抑制了人类衔接蛋白14-3-3和毒力因子外切酶S之间的相互作用。