Different Structural Origins of the Enantioselectivity of Haloalkane Dehalogenases toward Linear β-Haloalkanes: Open–Solvated versus Occluded–Desolvated Active Sites

Authors

Liskova, V., Stepankova, V., Bednar, D., Brezovsky, J., Prokop, Z., Chaloupkova, R., Damborsky, J.

Source

ANGEWANDTE CHEMIE INTERNATIONAL EDITION 56: 4719-4723 (2017)

Abstract

The enzymatic enantiodiscrimination of linear β-haloalkanes is difficult because the simple structures of the substrates prevent directional interactions. Herein we describe two distinct molecular mechanisms for the enantiodiscrimination of the β-haloalkane 2-bromopentane by haloalkane dehalogenases. Highly enantioselective DbjA has an open, solvent-accessible active site, whereas the engineered enzyme DhaA31 has an occluded and less solvated cavity but shows similar enantioselectivity. The enantioselectivity of DhaA31 arises from steric hindrance imposed by two specific substitutions rather than hydration as in DbjA.

Full text •  Supplement

Citation

Liskova, V., Stepankova, V., Bednar, D., Brezovsky, J., Prokop, Z., Chaloupkova, R., Damborsky, J., 2017: Different Structural Origins of the Enantioselectivity of Haloalkane Dehalogenases toward Linear β-Haloalkanes: Open–Solvated versus Occluded–Desolvated Active Sites. Angewandte Chemie International Edition 56: 4719-4723.

Pleased to Announce a New Successful PhD Candidate: Tom Buryska
Congratulations to Piia and colleagues on their JACS publication!
Woman Power Growing Stronger in LL: Lucinka
A New Addition to LL Team: Zanetka
Open Position: Laboratory Technician
A New Addition to LL Team: Maruska
Lecture of Dr. Joan Planas Iglesias