Structure-Guided Regulation in the Enantioselectivity of an Epoxide Hydrolase to Produce Enantiomeric Monosubstituted Epoxides and Vicinal Diols via Kinetic Resolution.
Hu, D., Hu, B.C., Hou, X.D., Zhang, D., Lei, Y.Q., Rao, Y.J., Wu, M.C.(2022) Org Lett 24: 1757-1761
- PubMed: 35229602 
- DOI: https://doi.org/10.1021/acs.orglett.1c04348
- Primary Citation of Related Structures:  
6IX2 - PubMed Abstract: 
Structure-guided microtuning of an Aspergillus usamii epoxide hydrolase was executed. One mutant, A214C/A250I, displayed a 12.6-fold enhanced enantiomeric ratio ( E = 202) toward rac -styrene oxide, achieving its nearly perfect kinetic resolution at 0.8 M in pure water or 1.6 M in n -hexanol/water. Several other beneficial mutants also displayed significantly improved E values, offering promising biocatalysts to access 19 structurally diverse chiral monosubstituted epoxides (97.1 - ≥ 99% ee s ) and vicinal diols (56.2-98.0% ee p ) with high yields.
Organizational Affiliation: 
Wuxi School of Medicine, Jiangnan University, Wuxi 214122, P.R. China.