1
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Improving the enantioselectivity of halohydrin dehalogenase for the synthesis of (R)-benzyl glycidyl ether via biocatalytic azidolysis. Int J Biol Macromol 2020; 170:123-128. [PMID: 33352156 DOI: 10.1016/j.ijbiomac.2020.12.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/02/2020] [Accepted: 12/12/2020] [Indexed: 11/23/2022]
Abstract
Halohydrin dehalogenases (HHDHs) are valuable biocatalysts for the synthesis of enantiopure benzyl glycidyl ether (BGE) and its derivatives, which are important synthetic intermediates for anti-cancer and anti-obesity drugs. However, all the reported HHDHs exhibit low enantioselectivity. In this study, we screened site-saturation mutagenesis libraries of AbHHDH at positions R89, A136, V137, P178, N179, F180, I181, Y186 and F187 for mutants with enhanced enantioselectivity toward BGE. The four improved variant R89V, R89Y, R89K and V137I were identified, and the double mutant R89Y/V137I showed 2.9-fold higher enantioselectivity than the wild type. The regions of HHDH containing the identified mutations were analyzed by homology modeling to explain the changes of enantioselectivity. Kinetic resolution of 20 to 100 mM BGE using whole cells of Escherichia coli expressing the mutant R89Y/V137I resulted in (R)-BGE yields of 42 to 32.5%, with ee >99%. This study improves our understanding of the enantioselectivity of HHDHs and contributes improved biocatalysts for the kinetic resolution of BGE.
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2
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Zhang C, Li C, Zhu XX, Liu YY, Zhao J, Wu MC. Highly regio- and enantio-selective hydrolysis of two racemic epoxides by GmEH3, a novel epoxide hydrolase from Glycine max. Int J Biol Macromol 2020; 164:2795-2803. [PMID: 32763395 DOI: 10.1016/j.ijbiomac.2020.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/28/2020] [Accepted: 08/02/2020] [Indexed: 11/29/2022]
Abstract
A novel epoxide hydrolase from Glycine max, designated GmEH3, was excavated based on the computer-aided analysis. Then, gmeh3, a GmEH3-encoding gene, was cloned and successfully expressed in E. coli Rosetta(DE3). Among the ten investigated rac-epoxides, GmEH3 possessed the highest and best complementary regioselectivities (regioselectivity coefficients, αS = 93.7% and βR = 97.2%) in the asymmetric hydrolysis of rac-m-chlorostyrene oxide (5a), and the highest enantioselectivity (enantiomeric ratio, E = 55.6) towards rac-phenyl glycidyl ether (7a). The catalytic efficiency (kcatS/KmS = 2.50 mM-1 s-1) of purified GmEH3 for (S)-5a was slightly higher than that (kcatR/KmR = 1.52 mM-1 s-1) for (R)-5a, whereas the kcat/Km (5.16 mM-1 s-1) for (S)-7a was much higher than that (0.09 mM-1 s-1) for (R)-7a. Using 200 mg/mL wet cells of E. coli/gmeh3 as the biocatalyst, the scale-up enantioconvergent hydrolysis of 150 mM rac-5a at 25 °C for 1.5 h afforded (R)-5b with 90.2% eep and 95.4% yieldp, while the kinetic resolution of 500 mM rac-7a for 2.5 h retained (R)-7a with over 99% ees and 43.2% yields. Furthermore, the sources of high regiocomplementarity of GmEH3 for (S)- and (R)-5a as well as high enantioselectivity towards rac-7a were analyzed via molecular docking (MD) simulation.
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Affiliation(s)
- Chen Zhang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Chuang Li
- College of Biological and Chemical Engineering, Auhui Polytechnic University, Wuhu 241000, PR China
| | - Xiu-Xiu Zhu
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - You-Yi Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Jun Zhao
- The Affiliated Wuxi Matemity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, PR China.
| | - Min-Chen Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China.
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3
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Li Y, Ou X, Guo Z, Zong M, Lou W. Using multiple site-directed modification of epoxide hydrolase to significantly improve its enantioselectivity in hydrolysis of rac-glycidyl phenyl ether. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.03.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Xu XF, Hu D, Hu BC, Li C, Liu YY, Wu MC. Near-perfect kinetic resolution of o-methylphenyl glycidyl ether by RpEH, a novel epoxide hydrolase from Rhodotorula paludigena JNU001 with high stereoselectivity. Appl Microbiol Biotechnol 2020; 104:6199-6210. [PMID: 32462245 DOI: 10.1007/s00253-020-10694-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 04/09/2020] [Accepted: 05/18/2020] [Indexed: 10/24/2022]
Abstract
In order to provide more alternative epoxide hydrolases for industrial production, a novel cDNA gene Rpeh-encoding epoxide hydrolase (RpEH) of Rhodotorula paludigena JNU001 identified by 26S rDNA sequence analysis was amplified by RT-PCR. The open-reading frame (ORF) of Rpeh was 1236 bp encoding RpEH of 411 amino acids and was heterologously expressed in Escherichia coli BL21(DE3). The substrate spectrum of expressed RpEH showed that the transformant E. coli/Rpeh had excellent enantioselectivity to 2a, 3a, and 5a-10a, among which E. coli/Rpeh had the highest activity (2473 U/g wet cells) and wonderful enantioselectivity (E = 101) for 8a, and its regioselectivity coefficients, αR and βS, toward (R)- and (S)-8a were 99.7 and 83.2%, respectively. Using only 10 mg wet cells/mL of E. coli/Rpeh, the near-perfect kinetic resolution of rac-8a at a high concentration (1000 mM) was achieved within 2.5 h, giving (R)-8a with more than 99% enantiomeric excess (ees) and 46.7% yield and producing (S)-8b with 93.2% eep and 51.4% yield with high space-time yield (STY) for (R)-8a and (S)-8b were 30.6 and 37.3 g/L/h.
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Affiliation(s)
- Xiong-Feng Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Die Hu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Bo-Chun Hu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Chuang Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - You-Yi Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Min-Chen Wu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, People's Republic of China.
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5
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Hu BC, Hu D, Li C, Xu XF, Wen Z, Wu MC. Near-perfect kinetic resolution of racemic p-chlorostyrene oxide by SlEH1, a novel epoxide hydrolase from Solanum lycopersicum with extremely high enantioselectivity. Int J Biol Macromol 2020; 147:1213-1220. [DOI: 10.1016/j.ijbiomac.2019.10.091] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/08/2019] [Accepted: 10/08/2019] [Indexed: 01/19/2023]
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6
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Heterologous overexpression of a novel halohydrin dehalogenase from Pseudomonas pohangensis and modification of its enantioselectivity by semi-rational protein engineering. Int J Biol Macromol 2020; 146:80-88. [DOI: 10.1016/j.ijbiomac.2019.12.203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 11/06/2019] [Accepted: 12/22/2019] [Indexed: 02/08/2023]
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7
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Xue F, Zhang LH, Xu Q. Significant improvement of the enantioselectivity of a halohydrin dehalogenase for asymmetric epoxide ring opening reactions by protein engineering. Appl Microbiol Biotechnol 2020; 104:2067-2077. [DOI: 10.1007/s00253-020-10356-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 12/15/2019] [Accepted: 01/05/2020] [Indexed: 02/03/2023]
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8
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Wang B, Wu B, He B. Efficient resolution of 3-aryloxy-1,2-propanediols using CLEA-YCJ01 with high enantioselectivity. RSC Adv 2019; 9:13757-13764. [PMID: 35519562 PMCID: PMC9063935 DOI: 10.1039/c9ra01103j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/14/2019] [Indexed: 01/19/2023] Open
Abstract
The lipase YCJ01 from Burkholderia ambifaria is an organic solvent-stable enzyme and its activity can be activated by a hydrophobic solvent due to the "interface activation" mechanism. The activity of lipase YCJ01 increased by 2.1-fold with t-butanol as the precipitant even after cross-linking. The cross-linked enzyme aggregates of lipase YCJ01 (CLEAs-YCJ01) were found to be efficient for resolving 3-(4-methylphenoxy)-1,2-propanediol (MPPD) through sequential esterification. Excellent enantioselectivity towards MPPD (E > 400), excellent enantiomeric excess (ee) values of 99.2% for S-diacetates and 99.1% for R-monoacetate, and high yield (49.9%) were achieved using a high substrate concentration (180 mmol L-1). Thus, R- and S-type compounds with excellent ee values were simultaneously obtained, and MPPD was resolved by CLEAs-YCJ01. CLEAs-YCJ01 also showed high operational stability and maintained 91.2% residual activity after ten batches. To further evaluate the substrate specificity of CLEAs-YCJ01, a series of 3-aryloxy-1,2-propanediols (six analogues of MPPD) was applied as substrates for resolution. Under the optimized reaction conditions of reaction temperature of 35 °C, MPPD concentration of 180 mmol L-1, molar ratio of vinyl acetate to MPPD of 3 : 1, and isopropyl ether as the solvent, CLEAs-YCJ01 exhibited relatively strict enantioselectivity towards all the analogues of MPPD with a high yield (≥49.3%), favourable ee values (94.8-99.4%) for S-diacetates, and high ee values (92.1-99.2%) for R-monoacetate, which shows potential prospects for industrial applications.
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Affiliation(s)
- Bin Wang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
- School of Chemistry & Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Bin Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Bingfang He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University Nanjing 211816 China
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9
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Xue F, Ya X, Xiu Y, Tong Q, Wang Y, Zhu X, Huang H. Exploring the Biocatalytic Scope of a Novel Enantioselective Halohydrin Dehalogenase from an Alphaproteobacterium. Catal Letters 2019. [DOI: 10.1007/s10562-019-02659-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Xue F, Ya X, Tong Q, Xiu Y, Huang H. Heterologous overexpression of Pseudomonas umsongensis halohydrin dehalogenase in Escherichia coli and its application in epoxide asymmetric ring opening reactions. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.09.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Wang B, He Q, Shu L, Yang F, Liang G, Liu W. Efficient asymmetric hydrolysis of styrene oxide by Mung bean epoxide hydrolases in a supercritical CO2/buffer biphasic system. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Ferrandi EE, Sayer C, De Rose SA, Guazzelli E, Marchesi C, Saneei V, Isupov MN, Littlechild JA, Monti D. New Thermophilic α/β Class Epoxide Hydrolases Found in Metagenomes From Hot Environments. Front Bioeng Biotechnol 2018; 6:144. [PMID: 30386778 PMCID: PMC6198070 DOI: 10.3389/fbioe.2018.00144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022] Open
Abstract
Two novel epoxide hydrolases (EHs), Sibe-EH and CH65-EH, were identified in the metagenomes of samples collected in hot springs in Russia and China, respectively. The two α/β hydrolase superfamily fold enzymes were cloned, over-expressed in Escherichia coli, purified and characterized. The new EHs were active toward a broad range of substrates, and in particular, Sibe-EH was excellent in the desymmetrization of cis-2,3-epoxybutane producing the (2R,3R)-diol product with ee exceeding 99%. Interestingly these enzymes also hydrolyse (4R)-limonene-1,2-epoxide with Sibe-EH being specific for the trans isomer. The Sibe-EH is a monomer in solution whereas the CH65-EH is a dimer. Both enzymes showed high melting temperatures with the CH65-EH being the highest at 85°C retaining 80% of its initial activity after 3 h thermal treatment at 70°C making it the most thermal tolerant wild type epoxide hydrolase described. The Sibe-EH and CH65-EH have been crystallized and their structures determined to high resolution, 1.6 and 1.4 Å, respectively. The CH65-EH enzyme forms a dimer via its cap domains with different relative orientation of the monomers compared to previously described EHs. The entrance to the active site cavity is located in a different position in CH65-EH and Sibe-EH in relation to other known bacterial and mammalian EHs.
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Affiliation(s)
| | - Christopher Sayer
- The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Simone Antonio De Rose
- The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Elisa Guazzelli
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Milan, Italy
| | - Carlotta Marchesi
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Milan, Italy
| | - Vahid Saneei
- The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Michail N Isupov
- The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Jennifer A Littlechild
- The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Daniela Monti
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Milan, Italy
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13
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Production of (R)-styrene oxide by recombinant whole-cell biocatalyst in aqueous and biphasic system. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2018. [DOI: 10.2478/pjct-2018-0023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The enantioselective resolution of racemic styrene oxide (rac-SO) to (R)-SO by whole cells of a recombinant Escherichia coli expressing epoxide hydrolase (EH) activity in aqueous and biphasic system were studied. Some parameters that may alter this bio-resolution, such as the concentration of recombinant cell, substrate and product were evaluated. The effect of the addition of different additives on the course of rac-SO biotransformation was also investigated. The results showed that the yield and the enantiomeric excess (ee) of (R)-SO were dependent on these variables. When the kinetic resolution was conducted with 350 mM of rac-SO, enantiopure (R)-SO with high (≥99%) ee was obtained with a yield of 38.2% yield at 12.2 h in the presence of 10% (v/v) Tween 80. An isooctane/aqueous system was developed to overcome the adverse factors in the aqueous phase, resulting in an improvement of yield from 38.2% to 42.9%. The results will provide a useful guidance for further application of this enzyme in the biocatalytic production of chiral synthons.
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14
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Maria-Solano MA, Serrano-Hervás E, Romero-Rivera A, Iglesias-Fernández J, Osuna S. Role of conformational dynamics in the evolution of novel enzyme function. Chem Commun (Camb) 2018; 54:6622-6634. [PMID: 29780987 PMCID: PMC6009289 DOI: 10.1039/c8cc02426j] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 05/10/2018] [Indexed: 12/26/2022]
Abstract
The free energy landscape concept that describes enzymes as an ensemble of differently populated conformational sub-states in dynamic equilibrium is key for evaluating enzyme activity, enantioselectivity, and specificity. Mutations introduced in the enzyme sequence can alter the populations of the pre-existing conformational states, thus strongly modifying the enzyme ability to accommodate alternative substrates, revert its enantiopreferences, and even increase the activity for some residual promiscuous reactions. In this feature article, we present an overview of the current experimental and computational strategies to explore the conformational free energy landscape of enzymes. We provide a series of recent publications that highlight the key role of conformational dynamics for the enzyme evolution towards new functions and substrates, and provide some perspectives on how conformational dynamism should be considered in future computational enzyme design protocols.
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Affiliation(s)
- Miguel A. Maria-Solano
- CompBioLab Group
, Institut de Química Computacional i Catàlisi and Departament de Química
, Universitat de Girona
,
Carrer Maria Aurèlia Capmany, 69
, 17003 Girona
, Catalonia
, Spain
.
| | - Eila Serrano-Hervás
- CompBioLab Group
, Institut de Química Computacional i Catàlisi and Departament de Química
, Universitat de Girona
,
Carrer Maria Aurèlia Capmany, 69
, 17003 Girona
, Catalonia
, Spain
.
| | - Adrian Romero-Rivera
- CompBioLab Group
, Institut de Química Computacional i Catàlisi and Departament de Química
, Universitat de Girona
,
Carrer Maria Aurèlia Capmany, 69
, 17003 Girona
, Catalonia
, Spain
.
| | - Javier Iglesias-Fernández
- CompBioLab Group
, Institut de Química Computacional i Catàlisi and Departament de Química
, Universitat de Girona
,
Carrer Maria Aurèlia Capmany, 69
, 17003 Girona
, Catalonia
, Spain
.
| | - Sílvia Osuna
- CompBioLab Group
, Institut de Química Computacional i Catàlisi and Departament de Química
, Universitat de Girona
,
Carrer Maria Aurèlia Capmany, 69
, 17003 Girona
, Catalonia
, Spain
.
- ICREA
,
Pg. Lluís Companys 23
, 08010 Barcelona
, Spain
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15
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Serrano-Hervás E, Casadevall G, Garcia-Borràs M, Feixas F, Osuna S. Epoxide Hydrolase Conformational Heterogeneity for the Resolution of Bulky Pharmacologically Relevant Epoxide Substrates. Chemistry 2018; 24:12254-12258. [DOI: 10.1002/chem.201801068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Eila Serrano-Hervás
- Laboratori de Bioquímica Computacional (CompBioLab); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona (UdG); Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Guillem Casadevall
- Laboratori de Bioquímica Computacional (CompBioLab); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona (UdG); Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Marc Garcia-Borràs
- Department of Chemistry and Biochemistry; University of California, Los Angeles (UCLA); 607 Charles E. Young Drive Los Angeles CA 90095 USA
| | - Ferran Feixas
- Laboratori de Bioquímica Computacional (CompBioLab); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona (UdG); Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
| | - Sílvia Osuna
- Laboratori de Bioquímica Computacional (CompBioLab); Institut de Química Computacional i Catàlisi (IQCC); Departament de Química; Universitat de Girona (UdG); Carrer Maria Aurèlia Capmany 69 17003 Girona Spain
- ICREA; Pg. Lluís Companys 23 08010 Barcelona Spain
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16
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Cossar PJ, Baker JR, Cain N, McCluskey A. In situ epoxide generation by dimethyldioxirane oxidation and the use of epichlorohydrin in the flow synthesis of a library of β-amino alcohols. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171190. [PMID: 29765627 PMCID: PMC5936892 DOI: 10.1098/rsos.171190] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
The flow coupling of epichlorohydrin with substituted phenols, while efficient, limits the nature of the epoxide available for the development of focused libraries of β-amino alcohols. This limitation was encountered in the production of analogues of 1-(4-nitrophenoxy)-3-((2-((4-(trifluoromethyl)pyrimidin-2-yl)amino)ethyl)amino)propan-2-ol 1, a potential antibiotic lead. The in situ (flow) generation of dimethyldoxirane (DMDO) and subsequent flow olefin epoxidation abrogates this limitation and afforded facile access to structurally diverse β-amino alcohols. Analogues of 1 were readily accessed either via (i) a flow/microwave hybrid approach, or (ii) a sequential flow approach. Key steps were the in situ generation of DMDO, with olefin epoxidation in typically good yields and a flow-mediated ring opening aminolysis to form an expanded library of β-amino alcohols 1 and 10a-18g, resulting in modest (11a, 21%) to excellent (12g, 80%) yields. Alternatively flow coupling of epichlorohydrin with phenols 4a-4m (22%-89%) and a Bi(OTf)3 catalysed microwave ring opening with amines afforded a select range of β-amino alcohols, but with lower levels of aminolysis regiocontrol than the sequential flow approach.
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17
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Serrano-Hervás E, Garcia-Borràs M, Osuna S. Exploring the origins of selectivity in soluble epoxide hydrolase from Bacillus megaterium. Org Biomol Chem 2018; 15:8827-8835. [PMID: 29026902 PMCID: PMC5708342 DOI: 10.1039/c7ob01847a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Epoxide hydrolase (EH) enzymes catalyze the hydration of racemic epoxides to yield their corresponding vicinal diols. In this work, the Bacillus megaterium epoxide hydrolase (BmEH)-mediated hydrolysis of racemic styrene oxide (rac-SO) and its para-nitro styrene oxide (rac-p-NSO) derivative are computationally investigated using density functional theory (DFT).
Epoxide hydrolase (EH) enzymes catalyze the hydration of racemic epoxides to yield their corresponding vicinal diols. These enzymes present different enantio- and regioselectivity depending upon either the substrate structure or the substitution pattern of the epoxide ring. In this study, we computationally investigate the Bacillus megaterium epoxide hydrolase (BmEH)-mediated hydrolysis of racemic styrene oxide (rac-SO) and its para-nitro styrene oxide (rac-p-NSO) derivative using density functional theory (DFT) and an active site cluster model consisting of 195 and 197 atoms, respectively. Full reaction mechanisms for epoxide ring opening were evaluated considering the attack at both oxirane carbons and considering two possible orientations of the substrate at the BmEH active site. Our results indicate that for both SO and p-NSO substrates the BmEH enantio- and regioselectivity is opposite to the inherent (R)-BmEH selectivity, the attack at the benzylic position (C1) of the (S)-enantiomer being the most favoured chemical outcome.
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Affiliation(s)
- Eila Serrano-Hervás
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain.
| | - Marc Garcia-Borràs
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA.
| | - Sílvia Osuna
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Carrer Maria Aurèlia Capmany 69, 17003 Girona, Spain.
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18
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Identification and Characterization of a Novel Halohydrin Dehalogenase from Bradyrhizobium erythrophlei and Its Performance in Preparation of Both Enantiomers of Epichlorohydrin. Catal Letters 2018. [DOI: 10.1007/s10562-017-2292-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Zaugg J, Gumulya Y, Bodén M, Mark AE, Malde AK. Effect of Binding on Enantioselectivity of Epoxide Hydrolase. J Chem Inf Model 2018; 58:630-640. [DOI: 10.1021/acs.jcim.7b00353] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Julian Zaugg
- School of Chemistry and Molecular Biosciences, University of Queensland, 4072 Brisbane, Australia
| | - Yosephine Gumulya
- School of Chemistry and Molecular Biosciences, University of Queensland, 4072 Brisbane, Australia
| | - Mikael Bodén
- School of Chemistry and Molecular Biosciences, University of Queensland, 4072 Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, 4072 Brisbane, Australia
| | - Alan E. Mark
- School of Chemistry and Molecular Biosciences, University of Queensland, 4072 Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, 4072 Brisbane, Australia
| | - Alpeshkumar K. Malde
- School of Chemistry and Molecular Biosciences, University of Queensland, 4072 Brisbane, Australia
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20
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Hu D, Tang C, Li C, Kan T, Shi X, Feng L, Wu M. Stereoselective Hydrolysis of Epoxides by reVrEH3, a Novel Vigna radiata Epoxide Hydrolase with High Enantioselectivity or High and Complementary Regioselectivity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9861-9870. [PMID: 29058432 DOI: 10.1021/acs.jafc.7b03804] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To provide more options for the stereoselective hydrolysis of epoxides, an epoxide hydrolase (VrEH3) gene from Vigna radiata was cloned and expressed in Escherichia coli. Recombinant VrEH3 displayed the maximum activity at pH 7.0 and 45 °C and high stability at pH 4.5-7.5 and 55 °C. Notably, reVrEH3 exhibited high and complementary regioselectivity toward styrene oxides 1a-3a and high enantioselectivity (E = 48.7) toward o-cresyl glycidyl ether 9a. To elucidate these interesting phenomena, the interactions of the three-dimensional structure between VrEH3 and enantiomers of 1a and 9a were analyzed by molecular docking simulation. Using E. coli/vreh3 whole cells, gram-scale preparations of (R)-1b and (R)-9a were performed by enantioconvergent hydrolysis of 100 mM rac-1a and kinetic resolution of 200 mM rac-9a in the buffer-free water system at 25 °C. These afforded (R)-1b with >99% eep and 78.7% overall yield after recrystallization and (R)-9a with >99% ees, 38.7% overall yield, and 12.7 g/L/h space-time yield.
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Affiliation(s)
| | - Cunduo Tang
- Nanyang Provincial Engineering Laboratory of Insect Bio-reactor, Nanyang Normal University , Henan 473061, China
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21
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Bioresolution of racemic phenyl glycidyl ether by a putative recombinant epoxide hydrolase from Streptomyces griseus NBRC 13350. World J Microbiol Biotechnol 2017; 33:82. [PMID: 28378221 DOI: 10.1007/s11274-017-2248-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Accepted: 03/16/2017] [Indexed: 01/29/2023]
Abstract
In order to produce enantiomerically pure epoxides for the synthesis of value-added chemicals, a novel putative epoxide hydrolase (EH) sgeh was cloned and overexpressed in pET28a/Escherichia coli BL21(DE3). The 1047 bp sgeh gene was mined from Streptomyces griseus NBRC 13350 genome sequence. The recombinant hexahistidyl-tagged SGEH was purified (16.6-fold) by immobilized metal-affinity chromatography, with 90% yield as a homodimer of 100 kDa. The recombinant E. coli whole cells overexpressing SGEH could kinetically resolve racemic phenyl glycidyl ether (PGE) into (R)-PGE with 98% ee, 40% yield, and enantiomeric ratio (E) of 20. This was achieved under the optimized reaction conditions i.e. cell/substrate ratio of 20:1 (w/w) at pH 7.5 and 20 °C in 10% (v/v) dimethylformamide (DMF) in a 10 h reaction. 99% enantiopure (R)-PGE was obtained when the reaction time was prolonged to 12 h with a yield of 34%. In conclusion, an economically viable and environment friendly green process for the production of enantiopure (R)-PGE was developed by using wet cells of E. coli expressing recombinant SGEH.
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22
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Synthesis of enantiopure epoxide by ‘one pot’ chemoenzymatic approach using a highly enantioselective dehydrogenase. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Chemoenzymatic synthesis of ( R )- and ( S )-propranolol using an engineered epoxide hydrolase with a high turnover number. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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24
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Efficient kinetic resolution of phenyl glycidyl ether by a novel epoxide hydrolase from Tsukamurella paurometabola. Appl Microbiol Biotechnol 2015; 99:9511-21. [DOI: 10.1007/s00253-015-6716-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 05/16/2015] [Accepted: 05/21/2015] [Indexed: 10/23/2022]
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25
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Chemoenzymatic enantioconvergent hydrolysis of p-nitrostyrene oxide into (R)-p-nitrophenyl glycol by a newly cloned epoxide hydrolase VrEH2 from Vigna radiata. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.08.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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26
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Xue F, Liu ZQ, Wan NW, Zhu HQ, Zheng YG. Engineering the epoxide hydrolase from Agromyces mediolanus for enhanced enantioselectivity and activity in the kinetic resolution of racemic epichlorohydrin. RSC Adv 2015. [DOI: 10.1039/c5ra02492g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The biocatalytic production of enantiopure epichlorohydrin (ECH) has been steadily attracting more attention.
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Affiliation(s)
- Feng Xue
- Institute of Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education
| | - Zhi-Qiang Liu
- Institute of Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education
| | - Nan-Wei Wan
- Institute of Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education
| | - Hang-Qin Zhu
- Institute of Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education
| | - Yu-Guo Zheng
- Institute of Bioengineering
- Zhejiang University of Technology
- Hangzhou
- P. R. China
- Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education
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27
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Zhang XH, Liu ZQ, Xue YP, Zheng YG. Activity improvement of a regioselective nitrilase from Acidovorax facilis and its application in the production of 1-(cyanocyclohexyl) acetic acid. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.08.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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28
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Kong XD, Yuan S, Li L, Chen S, Xu JH, Zhou J. Engineering of an epoxide hydrolase for efficient bioresolution of bulky pharmaco substrates. Proc Natl Acad Sci U S A 2014; 111:15717-22. [PMID: 25331869 PMCID: PMC4226085 DOI: 10.1073/pnas.1404915111] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Optically pure epoxides are essential chiral precursors for the production of (S)-propranolol, (S)-alprenolol, and other β-adrenergic receptor blocking drugs. Although the enzymatic production of these bulky epoxides has proven difficult, here we report a method to effectively improve the activity of BmEH, an epoxide hydrolase from Bacillus megaterium ECU1001 toward α-naphthyl glycidyl ether, the precursor of (S)-propranolol, by eliminating the steric hindrance near the potential product-release site. Using X-ray crystallography, mass spectrum, and molecular dynamics calculations, we have identified an active tunnel for substrate access and product release of this enzyme. The crystal structures revealed that there is an independent product-release site in BmEH that was not included in other reported epoxide hydrolase structures. By alanine scanning, two mutants, F128A and M145A, targeted to expand the potential product-release site displayed 42 and 25 times higher activities toward α-naphthyl glycidyl ether than the wild-type enzyme, respectively. These results show great promise for structure-based rational design in improving the catalytic efficiency of industrial enzymes for bulky substrates.
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Affiliation(s)
- Xu-Dong Kong
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China; State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; and
| | - Shuguang Yuan
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; and
| | - Lin Li
- National Institute of Biological Sciences, Beijing 102206, China
| | - She Chen
- National Institute of Biological Sciences, Beijing 102206, China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China;
| | - Jiahai Zhou
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; and
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29
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Bioproduction of (2R,3R)-3-Phenylglycidiol: A Key Chiral Synthon for Drugs Bearing 3-Phenylpropane Using a Newly-Isolated Strain of Aspergillus fumigatus ZJUTZQ160. Catal Letters 2014. [DOI: 10.1007/s10562-014-1380-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Kong XD, Ma Q, Zhou J, Zeng BB, Xu JH. A Smart Library of Epoxide Hydrolase Variants and the Top Hits for Synthesis of (S)-β-Blocker Precursors. Angew Chem Int Ed Engl 2014; 53:6641-4. [DOI: 10.1002/anie.201402653] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 04/01/2014] [Indexed: 11/06/2022]
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31
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Kong XD, Ma Q, Zhou J, Zeng BB, Xu JH. A Smart Library of Epoxide Hydrolase Variants and the Top Hits for Synthesis of (S)-β-Blocker Precursors. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402653] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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32
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Yu CY, Wei P, Li XF, Zong MH, Lou WY. Using Ionic Liquid in a Biphasic System to Improve Asymmetric Hydrolysis of Styrene Oxide Catalyzed by Cross-Linked Enzyme Aggregates (CLEAs) of Mung Bean Epoxide Hydrolases. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4037559] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chun-Yang Yu
- State Key Laboratory
of Pulp and Paper Engineering and ‡Laboratory of Applied Biocatalysis, College
of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
| | - Ping Wei
- State Key Laboratory
of Pulp and Paper Engineering and ‡Laboratory of Applied Biocatalysis, College
of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
| | - Xiao-Feng Li
- State Key Laboratory
of Pulp and Paper Engineering and ‡Laboratory of Applied Biocatalysis, College
of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
| | - Min-Hua Zong
- State Key Laboratory
of Pulp and Paper Engineering and ‡Laboratory of Applied Biocatalysis, College
of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
| | - Wen-Yong Lou
- State Key Laboratory
of Pulp and Paper Engineering and ‡Laboratory of Applied Biocatalysis, College
of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China
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33
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Zhang ZJ, Pan J, Ma BD, Xu JH. Efficient Biocatalytic Synthesis of Chiral Chemicals. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2014; 155:55-106. [DOI: 10.1007/10_2014_291] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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34
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Zhu QQ, He WH, Kong XD, Fan LQ, Zhao J, Li SX, Xu JH. Heterologous overexpression of Vigna radiata epoxide hydrolase in Escherichia coli and its catalytic performance in enantioconvergent hydrolysis of p-nitrostyrene oxide into (R)-p-nitrophenyl glycol. Appl Microbiol Biotechnol 2013; 98:207-18. [DOI: 10.1007/s00253-013-4845-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 03/03/2013] [Accepted: 03/08/2013] [Indexed: 11/25/2022]
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35
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Wu S, Li A, Chin YS, Li Z. Enantioselective Hydrolysis of Racemic and Meso-Epoxides with Recombinant Escherichia coli Expressing Epoxide Hydrolase from Sphingomonas sp. HXN-200: Preparation of Epoxides and Vicinal Diols in High ee and High Concentration. ACS Catal 2013. [DOI: 10.1021/cs300804v] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shuke Wu
- Department
of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
- Singapore-MIT Alliance, National University of Singapore, 4 Engineering Drive
3, Singapore 117576
| | - Aitao Li
- Department
of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Yit Siang Chin
- Department
of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
| | - Zhi Li
- Department
of Chemical and Biomolecular
Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
- Singapore-MIT Alliance, National University of Singapore, 4 Engineering Drive
3, Singapore 117576
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36
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ZHAO J, JU X, PAN J, LI C, WANG M, XU J. Heterogeneous Expression of Epoxide Hydrolase Genes from <I>Populus Tomentosa</I> and Application of the Enzyme for Biocatalytic Resolution of Chiral Epoxides. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.3724/sp.j.1088.2012.10832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Chen L, Shen H, Wei C, Zhu Q. Bioresolution of (R)-glycidyl azide by Aspergillus niger ZJUTZQ208: a new and concise synthon for chiral vicinal amino alcohols. Appl Microbiol Biotechnol 2012; 97:2609-16. [PMID: 22965190 DOI: 10.1007/s00253-012-4382-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/13/2012] [Accepted: 08/19/2012] [Indexed: 10/27/2022]
Abstract
A newly isolated Aspergillus niger strain containing epoxide hydrolase was used to resolve racemic glycidyl azide and four derivatives to the (R)-enantiomers. After optimization of the biotransformation conditions, (R)-glycidyl azide was produced with good enantioselectivity (e.e.s > 95 %, E > 20). The substrate structure, pH, and reaction time were found to have profound influences on the catalytic property of A. niger ZJUTZQ208. Enantiopure glycidyl azide was further utilized to synthesize linezolid in good yield, indicating it is a new and concise synthon for chiral vicinal amino alcohols. Enzyme-substrate docking studies were carried out with glycidyl azide to study the selectivity of this strain.
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Affiliation(s)
- Lin Chen
- Institute of Bioengineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310014, China
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39
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New opportunities for biocatalysis: driving the synthesis of chiral chemicals. Curr Opin Biotechnol 2011; 22:784-92. [PMID: 21783357 DOI: 10.1016/j.copbio.2011.07.002] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 06/29/2011] [Accepted: 07/01/2011] [Indexed: 02/08/2023]
Abstract
Various biocatalytic methods have been developed for the synthesis of chiral chemicals, which have made their synthesis more environmentally friendly and product-specific. New opportunities for biocatalysis, including new scientific developments in genomics and protein engineering technologies, novel process developments and the increased availability of useful enzymes, offer many possibilities for the manufacture of new chiral compounds and deliver greener and economically competitive processes. In this review, new opportunities for biocatalysis in the preparation of chiral molecules are outlined and highlighted.
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