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Shao H, Xu P, Tao X, He X, Pu C, Liang S, Shi Y, Wang X, Feng H, Yong B. Improving Hydrolytic Activity and Enantioselectivity of Epoxide Hydrolase from Phanerochaete chrysosporium by Directed Evolution. Molecules 2024; 29:4864. [PMID: 39459231 PMCID: PMC11509930 DOI: 10.3390/molecules29204864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 09/23/2024] [Accepted: 10/07/2024] [Indexed: 10/28/2024] Open
Abstract
Epoxide hydrolases (EHs) catalyze the conversion of epoxides into vicinal diols. The epoxide hydrolase gene from P. chrysosporium was previously cloned and subjected to site-directed mutation to study its enzyme activity, but the results were unsatisfactory. This study used error prone PCR and DNA shuffling to construct a PchEHA mutation library. We performed mutation-site combinations on PchEHA based on enzyme activity measurement results combined with directed evolution technology. More than 15,000 mutants were randomly selected for the preliminary screening of PchEHA enzyme activity alongside 38 mutant strains with increased enzyme activity or enantioselectivity. Protein expression and purification were conducted to determine the hydrolytic activity of PchEHA, and three mutants increased their activity by more than 95% compared with that of the wt. After multiple rounds of screening and site-specific mutagenesis, we found that F3 offers the best enzyme activity and enantioselectivity; furthermore, the molecular docking results confirmed this result. Overall, this study uncovered novel mutants with potential value as industrial biocatalysts.
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Affiliation(s)
- Huanhuan Shao
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Pan Xu
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
- Sichuan Institute of Atomic Energy, Yidu West Road, Chengdu 610101, China
| | - Xiang Tao
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Xinyi He
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Chunyan Pu
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Shaorong Liang
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Yingxin Shi
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Xiaoyan Wang
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
| | - Hong Feng
- College of Life Sciences, Sichuan University, Wangjiang Road, Chengdu 610199, China;
| | - Bin Yong
- College of Life Sciences, Sichuan Normal University, Chenglong Avenue, Chengdu 610101, China; (H.S.); (P.X.); (X.T.); (X.H.); (C.P.); (S.L.); (Y.S.); (X.W.)
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Bučko M, Kaniaková K, Hronská H, Gemeiner P, Rosenberg M. Epoxide Hydrolases: Multipotential Biocatalysts. Int J Mol Sci 2023; 24:7334. [PMID: 37108499 PMCID: PMC10138715 DOI: 10.3390/ijms24087334] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Epoxide hydrolases are attractive and industrially important biocatalysts. They can catalyze the enantioselective hydrolysis of epoxides to the corresponding diols as chiral building blocks for bioactive compounds and drugs. In this review article, we discuss the state of the art and development potential of epoxide hydrolases as biocatalysts based on the most recent approaches and techniques. The review covers new approaches to discover epoxide hydrolases using genome mining and enzyme metagenomics, as well as improving enzyme activity, enantioselectivity, enantioconvergence, and thermostability by directed evolution and a rational design. Further improvements in operational and storage stabilization, reusability, pH stabilization, and thermal stabilization by immobilization techniques are discussed in this study. New possibilities for expanding the synthetic capabilities of epoxide hydrolases by their involvement in non-natural enzyme cascade reactions are described.
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Affiliation(s)
- Marek Bučko
- Department of Glycobiotechnology, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia;
| | - Katarína Kaniaková
- Institute of Biotechnology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (K.K.); (H.H.); (M.R.)
| | - Helena Hronská
- Institute of Biotechnology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (K.K.); (H.H.); (M.R.)
| | - Peter Gemeiner
- Department of Glycobiotechnology, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia;
| | - Michal Rosenberg
- Institute of Biotechnology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia; (K.K.); (H.H.); (M.R.)
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Recent Advances in Greener and Energy Efficient Alkene Epoxidation Processes. ENERGIES 2022. [DOI: 10.3390/en15082858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The chemical industry is considered to be one of the largest consumers of energy in the manufacturing sector. As the cost of energy is rising rapidly, coupled with the increasingly stringent standards for the release of harmful chemicals and gases into the environment, more attention is now focused on developing energy efficient chemical processes that could significantly reduce both operational costs and greenhouse gas emissions. Alkene epoxidation is an important chemical process as the resultant epoxides are highly reactive compounds that are used as platform chemicals for the production of commercially important products for flavours, fragrances, paints and pharmaceuticals. A number of epoxidation methods have been developed over the past decade with the ultimate aim of minimising waste generation and energy consumption. In this review paper, some of the recent advances in epoxides synthesis using energy efficient processes are discussed. The epoxidation methods may provide sustainability in terms of environmental impact and energy consumption.
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