- 著者
-
仙石 徹
- 出版者
- 日本結晶学会
- 雑誌
- 日本結晶学会誌 (ISSN:03694585)
- 巻号頁・発行日
- vol.63, no.3, pp.227-228, 2021-08-31 (Released:2021-09-02)
- 参考文献数
- 5
Cyclic β-amino acids, such as (1R,2R)-2-aminocyclohexane carboxylic acid (ACHC), are known to induce compact conformation of peptides by forming turns and helices. Recently, a method to incorporate cyclic β-amino acids into peptides using ribosomes has been reported. Combining this method with the mRNA display method enabled the de novo discovery of macrocyclic peptides that contain cyclic β-amino acid residues and efficiently inhibit human coagulation factor XIIa (FXIIa). One such peptide, F3, potently inhibits FXIIa (Ki: 1.5 nM) and contains two ACHC residues. In the co-crystal structure of FXIIa-F3, F3 adopts an antiparallel β-hairpin structure stabilized by two ACHC residues. Despite its smaller size, F3 engages its target in a manner similar to that of natural protein-based inhibitors of serine proteases, demonstrating the utility of foldamer library consisting of macrocyclic peptides containing cyclic β-amino acids.