Consequences of Isostructural Main‐Chain Modifications for the Design of Antimicrobial Foldamers: Helical Mimics of Host‐Defense Peptides Based on a Heterogeneous Amide/Urea Backbone
Fraternal twins: Oligoureas and γ‐peptides are isosteric, quasi‐isostructuralhelicalfoldamers endowed with distinct biomolecular recognition properties. Combination of the two backbones to generate urea/amide hybrids (see picture) was found to give more potent yet less cytotoxic antimicrobialhelicalfoldamers.
An α-Helix-Mimicking 12,13-Helix: Designed α/β/γ-Foldamers as Selective Inhibitors of Protein-Protein Interactions
作者:Claire M. Grison、Jennifer A. Miles、Sylvie Robin、Andrew J. Wilson、David J. Aitken
DOI:10.1002/anie.201604517
日期:2016.9.5
interactions (PPIs). In this work, trans‐2‐aminocyclobutanecarboxylic acid (tACBC) was used as the key β‐amino acid component in the design of α/β/γ‐peptides to structurally mimic a native α‐helix. Suitably functionalized α/β/γ‐peptides assume an α‐helix‐mimicking 12,13‐helix conformation in solution, exhibit enhanced proteolyticstability in comparison to the wild‐type α‐peptide parent sequence from which
当前生物有机化学的一个主要挑战是鉴定蛋白质二级结构的有效模拟物,作为蛋白质-蛋白质相互作用(PPI)的抑制剂。在这项工作中,反式-2-氨基环丁烷甲酸( t ACBC)被用作α/β/ γ-肽设计中的关键β-氨基酸成分,以在结构上模拟天然的α-螺旋。适当功能化的 α/β/γ-肽在溶液中呈现模拟 12,13-螺旋构象的 α-螺旋,与衍生它们的野生型 α-肽亲本序列相比,表现出增强的蛋白水解稳定性,并充当p53/ h DM2 相互作用的选择性抑制剂。
Structure-activity relationship study of tryptophan-based butyrylcholinesterase inhibitors
A series of tryptophan-based selective nanomolar butyrylcholinesterase (BChE) inhibitors was designed and synthesized. Compounds were optimized in terms of potency, selectivity, and synthetic accessibility. The crystal structure of the inhibitor 18 in complex with BChE revealed the molecular basis for its low nanomolar inhibition (IC50 = 2.8 nM). The favourable in vitro results enabled a first-in-animal