Published: Jan. 1, 2024
Language: Английский
Published: Jan. 1, 2024
Language: Английский
Molecular Catalysis, Journal Year: 2025, Volume and Issue: 579, P. 115038 - 115038
Published: March 29, 2025
Language: Английский
Citations
0Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: 72(28), P. 15778 - 15787
Published: July 1, 2024
Enzymatic oxygenation of various cyclic ketones into lactones via Baeyer-Villiger monooxygenases (BVMOs) could provide a promising route for synthesizing fragrances and pharmaceutical ingredients. However, unsatisfactory catalytic activity thermostability restricted their applications in the food industries. In this study, we successfully improved monooxygenase (
Language: Английский
Citations
3ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 17480 - 17488
Published: Nov. 12, 2024
The rational design of one ketoreductase into stereocomplementary variants for controlling the stereoselectivity bulky chiral molecules bearing contiguous stereocenters is highly desirable and challenging. Herein, we report protein engineering from Chryseobacterium sp. CA49 (ChKRED20) through targeted mutagenesis only two key residues (Y188 H145) located in enzyme pocket, achieving precise stereocontrol over synthesis tricyclic fused lactones (highest reversing enantioselectivity >99:1 e.r. to <1:99 e.r.). Notably, both kinetic resolution asymmetric reduction (KR-AR) dynamic transformation (DyKAT) were observed this system. In KR-AR process, ChKRED20 exclusively convert (R)- or (S)-keto esters corresponding enantio- diastereoenriched (R,S)- (S,R)-cis-lactones deliver leftover (S)- (R)-keto esters. On contrary, DyKAT unreactive configurations substrates undergo efficient equilibration via an enolization protonation–deprotonation enzymes. Computational studies are also conducted get insight origin enantioselectivity.
Language: Английский
Citations
1Published: Jan. 1, 2024
Language: Английский
Citations
0