1
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Arshi S, Madane K, Shortall K, Hailo G, Alvarez-Malmagro J, Xiao X, Szymanńska K, Belochapkine S, Ranade VV, Magner E. Controlled Delivery of H 2O 2: A Three-Enzyme Cascade Flow Reactor for Peroxidase-Catalyzed Reactions. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:10555-10566. [PMID: 39027729 PMCID: PMC11253098 DOI: 10.1021/acssuschemeng.4c03220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 07/20/2024]
Abstract
Peroxidases are promising catalysts for oxidation reactions, yet their practical utility has been hindered by the fact that they require hydrogen peroxide (H2O2), which at high concentrations can cause deactivation of enzymes. Practical processes involving the use of peroxidases require the frequent addition of low concentrations of H2O2. In situ generation of H2O2 can be achieved using oxidase-type enzymes. In this study, a three-enzyme cascade system comprised of a H2O2 generator (glucose oxidase (GOx)), H2O2-dependent enzymes (chloroperoxidase (CPO) or horseradish peroxidase (HRP)), and a H2O2 scavenger (catalase (CAT)) was deployed in a flow reactor. Immobilization of the enzymes on a graphite rod was achieved through electrochemically driven physical adsorption, followed by cross-linking with glutaraldehyde. Modeling studies indicated that the flow in the reactor was laminar (Reynolds number, R e < 2000) and was nearly fully developed at the midplane of the annular reactor. Immobilized CAT and GOx displayed good stability, retaining 79% and 84% of their initial activity, respectively, after three cycles of operation. Conversely, immobilized CPO exhibited a considerable reduction in activity after one use, retaining only 30% of its initial activity. The GOx-CAT-GRE system enabled controlled delivery of H2O2 in a more stable manner with a 4-fold enhancement in the oxidation of indole compared to the direct addition of H2O2. Using CPO in solution coupled with GOx-CAT-GRE yields of 90% for the oxidation of indole to 2-oxyindole and of 93% and 91% for the chlorination of thymol and carvacrol, respectively.
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Affiliation(s)
- Simin Arshi
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Ketan Madane
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Kim Shortall
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Goran Hailo
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Julia Alvarez-Malmagro
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Xinxin Xiao
- Department
of Chemistry, Technical University of Denmark, Kongens Lyngby 2800, Denmark
| | - Katarzyna Szymanńska
- Department
of Chemical Engineering and Process Design, Silesian University of Technology, Gliwice 44-100, Poland
| | - Serguei Belochapkine
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Vivek V. Ranade
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Edmond Magner
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
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2
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Zhu X, Ding Y, Li S, Jiang Y, Chen Y. Electroenzymatic cascade reaction on a biohybrid boosts the chiral epoxidation reaction. Sci Bull (Beijing) 2024; 69:483-491. [PMID: 38123433 DOI: 10.1016/j.scib.2023.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/11/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Abstract
The chiral epoxidation of styrene and its derivatives is an important transformation that has attracted considerable scientific interest in the chemical industry. Herein, we integrate enzymatic catalysis and electrocatalysis to propose a new route for the chiral epoxidation of styrene and its derivatives. Chloroperoxidase (CPO) functionalized with 1-ethyl-3-methylimidazolium bromide (ILEMB) was loaded onto cobalt nitrogen-doped carbon nanotubes (CoN@CNT) to form a biohybrid (CPO-ILEMB/CoN@CNT). H2O2 species were generated in situ through a two-electron oxygen reduction reaction (2e-ORR) at CoN@CNT to initiate the following enzymatic epoxidation of styrene by CPO. CoN@CNT had high electroactivity for the ORR to produce H2O2 at a more positive potential, prohibiting the conversion of FeIII to FeII in the heme of CPO to maintain enzymatic activity. Meanwhile, CoN@CNT could serve as an ideal carrier for the immobilization of CPO-ILEMB. Hence, the coimmobilization of CPO-ILEMB and CoN@CNT could facilitate the diffusion of intermediate H2O2, which achieved 17 times higher efficiency than the equivalent amounts of free CPO-ILEMB in bulk solution for styrene epoxidation. Notably, an enhancement (∼45%) of chiral selectivity for the epoxidation of styrene was achieved.
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Affiliation(s)
- Xuefang Zhu
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China
| | - Yu Ding
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Shuni Li
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China
| | - Yucheng Jiang
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Normal University, Xi'an 710119, China.
| | - Yu Chen
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
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3
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Arshi S, Xiao X, Belochapkine S, Magner E. Electrochemical immobilization of glucose oxidase for the controlled production of H2O2 in a biocatalytic flow reactor. ChemElectroChem 2022; 9:e202200319. [PMID: 36246851 PMCID: PMC9545823 DOI: 10.1002/celc.202200319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/24/2022] [Indexed: 11/09/2022]
Abstract
Electrochemical methods can be used to selectively modify the surfaces of electrodes, enabling the immobilisation of enzymes on defined areas on the surfaces of electrodes. Such selective immobilisation methods can be used to pattern catalysts on surfaces in a controlled manner. Using this approach, the selective patterning of the enzyme glucose oxidase on the electrodes was used to develop a flow reactor for the controlled delivery of the oxidant H2O2. GOx was immobilised on a glassy carbon electrode using polypyrrole, silica films, and diazonium linkers. The rate of production of H2O2 and the stability of the response was dependent on the immobilisation method. GOx encapsulated in polypyrrole was selected as the optimal method of immobilisation, with a rate of production of 91±11 μM h−1 for 4 hours of continuous operation. The enzyme was subsequently immobilised on carbon rod electrodes (surface area of 5.76 cm2) using a polypyrrole/Nafion® film and incorporated into a flow reactor. The rate of production of H2O2 was 602±57 μM h−1, with 100 % retention of activity after 7 h of continuous operation, demonstrating that such a system can be used to prepare H2O2 at continuous and stable rate for use in downstream oxidation reactions.
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Affiliation(s)
- Simin Arshi
- University of Limerick Department of Chemical Sciences, Bernal Institute IRELAND
| | - Xinxin Xiao
- Technical University of Denmark: Danmarks Tekniske Universitet Department of Chemistry DENMARK
| | - Serguei Belochapkine
- University of Limerick Department of Chemical Sciences, Bernal Institute IRELAND
| | - Edmond Magner
- University of Limerick Materials and Surface Science Institute Plassey IE Co. Limerick IRELAND
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4
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Podgorski MN, Harbort JS, Lee JHZ, Nguyen GT, Bruning JB, Donald WA, Bernhardt PV, Harmer JR, Bell SG. An Altered Heme Environment in an Engineered Cytochrome P450 Enzyme Enables the Switch from Monooxygenase to Peroxygenase Activity. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05877] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Matthew N. Podgorski
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Joshua S. Harbort
- Center for Advanced Imaging, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Joel H. Z. Lee
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Giang T.H. Nguyen
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - John B. Bruning
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - William A. Donald
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jeffrey R. Harmer
- Center for Advanced Imaging, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Stephen G. Bell
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
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5
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Li K, Yang Q, Zhang P, Zhang W. Research Progress of Peroxygenase-Catalyzed Reactions Driven by in-situ Generation of H 2 O 2. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202108052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Hobisch M, Holtmann D, Gomez de Santos P, Alcalde M, Hollmann F, Kara S. Recent developments in the use of peroxygenases - Exploring their high potential in selective oxyfunctionalisations. Biotechnol Adv 2021; 51:107615. [PMID: 32827669 PMCID: PMC8444091 DOI: 10.1016/j.biotechadv.2020.107615] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 12/11/2022]
Abstract
Peroxygenases are an emerging new class of enzymes allowing selective oxyfunctionalisation reactions in a cofactor-independent way different from well-known P450 monooxygenases. Herein, we focused on recent developments from organic synthesis, molecular biotechnology and reaction engineering viewpoints that are devoted to bring these enzymes in industrial applications. This covers natural diversity from different sources, protein engineering strategies for expression, substrate scope, activity and selectivity, stabilisation of enzymes via immobilisation, and the use of peroxygenases in low water media. We believe that peroxygenases have much to offer for selective oxyfunctionalisations and we have much to study to explore the full potential of these versatile biocatalysts in organic synthesis.
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Affiliation(s)
- Markus Hobisch
- Department of Engineering, Biocatalysis and Bioprocessing Group, Aarhus University, Gustav Wieds Vej 10, Aarhus C 8000, Denmark
| | - Dirk Holtmann
- Institute of Bioprocess Engineering and Pharmaceutical Technology, University of Applied Sciences Mittelhessen, Wiesenstr. 14, Gießen 35390, Germany
| | | | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, C/Marie Curie 2, Madrid 28049, Spain; EvoEnzyme S.L, C/ Marie Curie 2, Madrid 28049, Spain
| | - Frank Hollmann
- Department of Biotechnology, Biocatalysis Group, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Selin Kara
- Department of Engineering, Biocatalysis and Bioprocessing Group, Aarhus University, Gustav Wieds Vej 10, Aarhus C 8000, Denmark.
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7
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Grogan G. Hemoprotein Catalyzed Oxygenations: P450s, UPOs, and Progress toward Scalable Reactions. JACS AU 2021; 1:1312-1329. [PMID: 34604841 PMCID: PMC8479775 DOI: 10.1021/jacsau.1c00251] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Indexed: 05/15/2023]
Abstract
The selective oxygenation of nonactivated carbon atoms is an ongoing synthetic challenge, and biocatalysts, particularly hemoprotein oxygenases, continue to be investigated for their potential, given both their sustainable chemistry credentials and also their superior selectivity. However, issues of stability, activity, and complex reaction requirements often render these biocatalytic oxygenations problematic with respect to scalable industrial processes. A continuing focus on Cytochromes P450 (P450s), which require a reduced nicotinamide cofactor and redox protein partners for electron transport, has now led to better catalysts and processes with a greater understanding of process requirements and limitations for both in vitro and whole-cell systems. However, the discovery and development of unspecific peroxygenases (UPOs) has also recently provided valuable complementary technology to P450-catalyzed reactions. UPOs need only hydrogen peroxide to effect oxygenations but are hampered by their sensitivity to peroxide and also by limited selectivity. In this Perspective, we survey recent developments in the engineering of proteins, cells, and processes for oxygenations by these two groups of hemoproteins and evaluate their potential and relative merits for scalable reactions.
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8
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Le TK, Kim J, Anh Nguyen N, Huong Ha Nguyen T, Sun EG, Yee SM, Kang HS, Yeom SJ, Beum Park C, Yun CH. Solar-Powered Whole-Cell P450 Catalytic Platform for C-Hydroxylation Reactions. CHEMSUSCHEM 2021; 14:3054-3058. [PMID: 34085413 DOI: 10.1002/cssc.202100944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/02/2021] [Indexed: 06/12/2023]
Abstract
Photobiocatalysis is a green platform for driving redox enzymatic reactions using solar energy, not needing high-cost cofactors and redox partners. Here, a visible light-driven whole-cell platform for human cytochrome P450 (CYP) photobiocatalysis was developed using natural flavins as a photosensitizer. Photoexcited flavins mediate NADPH/reductase-free, light-driven biocatalysis by human CYP2E1 both in vitro and in the whole-cell systems. In vitro tests demonstrated that the photobiocatalytic activity of CYP2E1 is dependent on the substrate type, the presence of catalase, and the acid type used as a sacificial electron donor. A protective effect of catalase was found against the inactivation of CYP2E1 heme by H2 O2 and the direct transfer of photo-induced electrons to the heme iron not by peroxide shunt. Furthermore, the P450 photobiocatalysis in whole cells containing human CYPs 1A1, 1A2, 1B1, and 3A4 demonstrated the general applicability of the solar-powered, flavin-mediated P450 photobiocatalytic system.
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Affiliation(s)
- Thien-Kim Le
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jinhyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 34141, Republic of Korea
| | - Ngoc Anh Nguyen
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Thi Huong Ha Nguyen
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Eun-Gene Sun
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Su-Min Yee
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hyung-Sik Kang
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Soo-Jin Yeom
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 34141, Republic of Korea
| | - Chul-Ho Yun
- School of Biological Sciences and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
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9
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Li Y, Yuan B, Sun Z, Zhang W. C–H bond functionalization reactions enabled by photobiocatalytic cascades. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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10
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Yang N, Tian Y, Zhang M, Peng X, Li F, Li J, Li Y, Fan B, Wang F, Song H. Photocatalyst-enzyme hybrid systems for light-driven biotransformation. Biotechnol Adv 2021; 54:107808. [PMID: 34324993 DOI: 10.1016/j.biotechadv.2021.107808] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/26/2021] [Accepted: 07/21/2021] [Indexed: 11/02/2022]
Abstract
Enzymes catalyse target reactions under mild conditions with high efficiency, as well as excellent regional-, stereo-, and enantiomeric selectivity. Photocatalysis utilises sustainable and environment-friendly light power to realise efficient chemical conversion. By combining the interdisciplinary advantages of photo- and enzymatic catalysis, the photocatalyst-enzyme hybrid systems have proceeded various light-driven biotransformation with high efficiency under environmentally benign conditions, thus, attracting unparalleled focus during the last decades. It has also been regarded as a promising pathway towards green chemistry utilising ubiquitous solar energy. This systematic review gives insight into this research field by classifying the existing photocatalyst-enzyme hybrid systems into three sections based on different hybridizing modes between photo- and enzymatic catalysis. Furthermore, existing challenges and proposed strategies are discussed within this context. The first system summarised is the cofactor-mediated hybrid system, in which natural/artificial cofactors act as reducing equivalents that connect photocatalysts with enzymes for light-driven enzymatic biotransformation. Second, the direct contact-based photocatalyst-enzyme hybrid systems are described, including two different kinds of electron exchange sites on the enzyme molecules. Third, some cases where photocatalysts and enzymes are integrated into a reaction cascade with specific intermediates will be discussed in the following chapter. Finally, we provide perspective concerning the future of this field.
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Affiliation(s)
- Nan Yang
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Yao Tian
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Mai Zhang
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Xiting Peng
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Feng Li
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Jianxun Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China
| | - Yi Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China
| | - Bei Fan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China
| | - Fengzhong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China.
| | - Hao Song
- Frontier Science Centre for Synthetic Biology, Key Laboratory of Systems Bioengineering (MOE), Collaborative Innovation Centre of Chemical Science and Engineering (Tianjin), and School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China.
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11
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Schmermund L, Reischauer S, Bierbaumer S, Winkler CK, Diaz‐Rodriguez A, Edwards LJ, Kara S, Mielke T, Cartwright J, Grogan G, Pieber B, Kroutil W. Chromoselective Photocatalysis Enables Stereocomplementary Biocatalytic Pathways*. Angew Chem Int Ed Engl 2021; 60:6965-6969. [PMID: 33529432 PMCID: PMC8048449 DOI: 10.1002/anie.202100164] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Indexed: 12/26/2022]
Abstract
Controlling the selectivity of a chemical reaction with external stimuli is common in thermal processes, but rare in visible-light photocatalysis. Here we show that the redox potential of a carbon nitride photocatalyst (CN-OA-m) can be tuned by changing the irradiation wavelength to generate electron holes with different oxidation potentials. This tuning was the key to realizing photo-chemo-enzymatic cascades that give either the (S)- or the (R)-enantiomer of phenylethanol. In combination with an unspecific peroxygenase from Agrocybe aegerita, green light irradiation of CN-OA-m led to the enantioselective hydroxylation of ethylbenzene to (R)-1-phenylethanol (99 % ee). In contrast, blue light irradiation triggered the photocatalytic oxidation of ethylbenzene to acetophenone, which in turn was enantioselectively reduced with an alcohol dehydrogenase from Rhodococcus ruber to form (S)-1-phenylethanol (93 % ee).
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Affiliation(s)
- Luca Schmermund
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Susanne Reischauer
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg114476PotsdamGermany
| | - Sarah Bierbaumer
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Christoph K. Winkler
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Alba Diaz‐Rodriguez
- Chemical Development, Medicinal Science and Technology, Pharma R&DGlaxoSmithKline Medicines Research CentreGunnels Wood RoadStevenageSG1 2NYUK
| | - Lee J. Edwards
- Chemical Development, Medicinal Science and Technology, Pharma R&DGlaxoSmithKline Medicines Research CentreGunnels Wood RoadStevenageSG1 2NYUK
| | - Selin Kara
- Department of Engineering, Biological and Chemical EngineeringBiocatalysis and Bioprocessing GroupAarhus UniversityGustav Wieds Vej 108000AarhusDenmark
| | - Tamara Mielke
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Jared Cartwright
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Gideon Grogan
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Bartholomäus Pieber
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg114476PotsdamGermany
| | - Wolfgang Kroutil
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
- Field of Excellence BioHealth-University of Graz8010GrazAustria
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12
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Schmermund L, Reischauer S, Bierbaumer S, Winkler CK, Diaz‐Rodriguez A, Edwards LJ, Kara S, Mielke T, Cartwright J, Grogan G, Pieber B, Kroutil W. Chromoselective Photocatalysis Enables Stereocomplementary Biocatalytic Pathways. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 133:7041-7045. [PMID: 38504955 PMCID: PMC10946972 DOI: 10.1002/ange.202100164] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Indexed: 12/28/2022]
Abstract
Controlling the selectivity of a chemical reaction with external stimuli is common in thermal processes, but rare in visible-light photocatalysis. Here we show that the redox potential of a carbon nitride photocatalyst (CN-OA-m) can be tuned by changing the irradiation wavelength to generate electron holes with different oxidation potentials. This tuning was the key to realizing photo-chemo-enzymatic cascades that give either the (S)- or the (R)-enantiomer of phenylethanol. In combination with an unspecific peroxygenase from Agrocybe aegerita, green light irradiation of CN-OA-m led to the enantioselective hydroxylation of ethylbenzene to (R)-1-phenylethanol (99 % ee). In contrast, blue light irradiation triggered the photocatalytic oxidation of ethylbenzene to acetophenone, which in turn was enantioselectively reduced with an alcohol dehydrogenase from Rhodococcus ruber to form (S)-1-phenylethanol (93 % ee).
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Affiliation(s)
- Luca Schmermund
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Susanne Reischauer
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg114476PotsdamGermany
| | - Sarah Bierbaumer
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Christoph K. Winkler
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
| | - Alba Diaz‐Rodriguez
- Chemical Development, Medicinal Science and Technology, Pharma R&DGlaxoSmithKline Medicines Research CentreGunnels Wood RoadStevenageSG1 2NYUK
| | - Lee J. Edwards
- Chemical Development, Medicinal Science and Technology, Pharma R&DGlaxoSmithKline Medicines Research CentreGunnels Wood RoadStevenageSG1 2NYUK
| | - Selin Kara
- Department of Engineering, Biological and Chemical EngineeringBiocatalysis and Bioprocessing GroupAarhus UniversityGustav Wieds Vej 108000AarhusDenmark
| | - Tamara Mielke
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Jared Cartwright
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Gideon Grogan
- Department of ChemistryUniversity of YorkHeslingtonYorkYO10 5DDUK
| | - Bartholomäus Pieber
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg114476PotsdamGermany
| | - Wolfgang Kroutil
- Institute of ChemistryDepartment of Organic and Bioorganic ChemistryUniversity of Graz, NAWI Graz, BioTechMed GrazHeinrichstrasse 288010GrazAustria
- Field of Excellence BioHealth-University of Graz8010GrazAustria
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13
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Advances in enzymatic oxyfunctionalization of aliphatic compounds. Biotechnol Adv 2021; 51:107703. [PMID: 33545329 DOI: 10.1016/j.biotechadv.2021.107703] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/17/2021] [Accepted: 01/25/2021] [Indexed: 12/27/2022]
Abstract
Selective oxyfunctionalizations of aliphatic compounds are difficult chemical reactions, where enzymes can play an important role due to their stereo- and regio-selectivity and operation under mild reaction conditions. P450 monooxygenases are well-known biocatalysts that mediate oxyfunctionalization reactions in different living organisms (from bacteria to humans). Unspecific peroxygenases (UPOs), discovered in fungi, have arisen as "dream biocatalysts" of great biotechnological interest because they catalyze the oxyfunctionalization of aliphatic and aromatic compounds, avoiding the necessity of expensive cofactors and regeneration systems, and only depending on H2O2 for their catalysis. Here, we summarize recent advances in aliphatic oxyfunctionalization reactions by UPOs, as well as the molecular determinants of the enzyme structures responsible for their activities, emphasizing the differences found between well-known P450s and the novel fungal peroxygenases.
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Riedel M, Höfs S, Ruff A, Schuhmann W, Lisdat F. A Tandem Solar Biofuel Cell: Harnessing Energy from Light and Biofuels. Angew Chem Int Ed Engl 2021; 60:2078-2083. [PMID: 33006812 PMCID: PMC7894536 DOI: 10.1002/anie.202012089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 12/12/2022]
Abstract
We report on a photobioelectrochemical fuel cell consisting of a glucose‐oxidase‐modified BiFeO3 photobiocathode and a quantum‐dot‐sensitized inverse opal TiO2 photobioanode linked to FAD glucose dehydrogenase via a redox polymer. Both photobioelectrodes are driven by enzymatic glucose conversion. Whereas the photobioanode can collect electrons from sugar oxidation at rather low potential, the photobiocathode shows reduction currents at rather high potential. The electrodes can be arranged in a sandwich‐like manner due to the semi‐transparent nature of BiFeO3, which also guarantees a simultaneous excitation of the photobioanode when illuminated via the cathode side. This tandem cell can generate electricity under illumination and in the presence of glucose and provides an exceptionally high OCV of about 1 V. The developed semi‐artificial system has significant implications for the integration of biocatalysts in photoactive entities for bioenergetic purposes, and it opens up a new path toward generation of electricity from sunlight and (bio)fuels.
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Affiliation(s)
- Marc Riedel
- Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745, Wildau, Germany
| | - Soraya Höfs
- Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745, Wildau, Germany
| | - Adrian Ruff
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätstr. 150, 44780, Bochum, Germany.,PPG (Deutschland) Business Support GmbH, EMEA Packaging Coatings, Erlenbrunnenstr. 20, 72411, Bodelshausen, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry-Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätstr. 150, 44780, Bochum, Germany
| | - Fred Lisdat
- Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745, Wildau, Germany
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15
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Huang H, Lei L, Bai J, Zhang L, Song D, Zhao J, Li J, Li Y. Efficient elimination and detection of phenolic compounds in juice using laccase mimicking nanozymes. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.04.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Riedel M, Höfs S, Ruff A, Schuhmann W, Lisdat F. A Tandem Solar Biofuel Cell: Harnessing Energy from Light and Biofuels. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Marc Riedel
- Biosystems Technology Institute of Life Sciences and Biomedical Technologies Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
| | - Soraya Höfs
- Biosystems Technology Institute of Life Sciences and Biomedical Technologies Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
| | - Adrian Ruff
- Analytical Chemistry—Center for Electrochemical Sciences (CES) Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätstr. 150 44780 Bochum Germany
- PPG (Deutschland) Business Support GmbH EMEA Packaging Coatings Erlenbrunnenstr. 20 72411 Bodelshausen Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry—Center for Electrochemical Sciences (CES) Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätstr. 150 44780 Bochum Germany
| | - Fred Lisdat
- Biosystems Technology Institute of Life Sciences and Biomedical Technologies Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
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17
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Chen H, Simoska O, Lim K, Grattieri M, Yuan M, Dong F, Lee YS, Beaver K, Weliwatte S, Gaffney EM, Minteer SD. Fundamentals, Applications, and Future Directions of Bioelectrocatalysis. Chem Rev 2020; 120:12903-12993. [DOI: 10.1021/acs.chemrev.0c00472] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hui Chen
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Olja Simoska
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Koun Lim
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Matteo Grattieri
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Mengwei Yuan
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Fangyuan Dong
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Yoo Seok Lee
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Kevin Beaver
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Samali Weliwatte
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Erin M. Gaffney
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Shelley D. Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
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18
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Amongre R, Gassner G. Regenerable copper anode for the Cu(I)-mediated reduction of FAD in the electroenzymatic styrene epoxidation reaction. Bioelectrochemistry 2020; 137:107679. [PMID: 33120296 DOI: 10.1016/j.bioelechem.2020.107679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 12/19/2022]
Abstract
Styrene monooxygenase (SMO) is a two-component flavoenzyme composed of NADH-dependent flavin reductase (SMOB) and FAD-specific styrene epoxidase (NSMOA) components. The enantioselective styrene epoxidation reaction catalyzed by this enzyme can be streamlined for chemosynthetic applications by substituting NADH and the reductase with an electrode to supply the epoxidase with reducing equivalents required for catalysis. Slow kinetics of adsorption and desorption of FAD from the electrode surface and unproductive side reactions of the reduced flavin with oxygen limit the efficiency of direct electroenzymatic catalysis. In the present work we develop a miniature spectroelectrochemical cell equipped with a copper electrode for the anodic synthesis of Cu(I) chelates of EDTA, glutamate, and citrate as FAD-reducing agents, and a platinum electrode for the electrolytic generation of oxygen. Copper oxidized in the flavin reduction reaction can be reclaimed subsequently as copper metal at the electrode surface. About 80% transformation of styrene is achieved in a single cell cycle of reduction and oxygenation at pH 7 and 25 °C in good agreement with that predicted by numerical simulation. When the cell is operated in two successive cycles, styrene oxide can be synthesized with an electroenzymatic epoxidation activity of 663U/g in 94% yield. This approach to electroenzymatic catalysis shows promise for the quantitative transformation of styrene to styrene oxide and may be applied more generally to other flavoprotein monooxygenases.
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Affiliation(s)
- Robert Amongre
- Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, CA, United States
| | - George Gassner
- Department of Chemistry and Biochemistry, San Francisco State University, San Francisco, CA, United States.
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19
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Wang Z, Jian Y, Han Y, Fu Z, Lu D, Wu J, Liu Z. Recent progress in enzymatic functionalization of carbon-hydrogen bonds for the green synthesis of chemicals. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Shen HM, Liu L, Qi B, Hu MY, Ye HL, She YB. Efficient and selective oxidation of secondary benzylic C H bonds to ketones with O2 catalyzed by metalloporphyrins under solvent-free and additive-free conditions. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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21
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Park M, Yoon S, Park J, Park NH, Ju SY. Flavin Mononucleotide-Mediated Formation of Highly Electrically Conductive Hierarchical Monoclinic Multiwalled Carbon Nanotube-Polyamide 6 Nanocomposites. ACS NANO 2020; 14:10655-10665. [PMID: 32806060 DOI: 10.1021/acsnano.0c05170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Although the multiwalled carbon nanotube (MWNT) is a promising material for use in the production of high electrical conductivity (σ) polymer nanocomposites, its tendency to aggregate and distribute randomly in a polymer matrix is a problematic issue. In the current study, we developed a highly conductive and monoclinically aligned MWNT-polyamide 6 (PA) nanocomposite containing interfacing flavin moieties. In this system, the flavin mononucleotide (FMN) initially serves as a noncovalent aqueous surfactant for individualizing MWNTs in the form of FMN-wrapped MWNTs (FMN-MWNT), and then partially decomposed FMN (dFMN) induces crystallization of the PA on the MWNTs. The results of experiments performed using material subjected to partial dissolution of PA matrix show that the nanocomposite PA-dFMN-MWNT, formed by melt extrusion of PA and dFMN-MWNT, contains a three-dimensional monoclinic MWNT network embedded in an equally monoclinic PA matrix. An increase in monoclinic network promoted by an increase in the content of MWNT increases σ of the nanocomposite up to 100 S/m, the highest value reported for a polymer-MWNT nanocomposite. X-ray diffraction along with transmission electron microscopy reveal that the presence of dFMN induces the formation of monoclinic PA on dFMN-MWNT. The high σ of the PA-dFMN-MWNT nanocomposite is also a consequence of a minimization of defect formation of MWNT by noncovalent functionalization. Hierarchical structural ordering, yet individualization of MWNTs, provides a viable strategy to improve the physical property of nanocomposites.
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Affiliation(s)
- Minsuk Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Seulki Yoon
- Human Convergence Technology Group, Korea Institute of Industrial Technology, Ansan-Si, Gyeonggi-Do 15588, Republic of Korea
| | - Junmo Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - No-Hyung Park
- Department of Textile Convergence of Biotechnology and Nanotechnology, Korea Institute of Industrial Technology, Ansan-Si, Gyeonggi-Do 15588, Republic of Korea
| | - Sang-Yong Ju
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
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22
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Yoon J, Kim J, Tieves F, Zhang W, Alcalde M, Hollmann F, Park CB. Piezobiocatalysis: Ultrasound-Driven Enzymatic Oxyfunctionalization of C–H Bonds. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00188] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaeho Yoon
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Jinhyun Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Wuyuan Zhang
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, 28049 Madrid, Spain
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
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23
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Choi DS, Lee H, Tieves F, Lee YW, Son EJ, Zhang W, Shin B, Hollmann F, Park CB. Bias-Free In Situ H2O2 Generation in a Photovoltaic-Photoelectrochemical Tandem Cell for Biocatalytic Oxyfunctionalization. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04454] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Da Som Choi
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Hojin Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Yang Woo Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Eun Jin Son
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Wuyuan Zhang
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Byungha Shin
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
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24
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Yu W, Wu W, Jiang H. Copper‐Catalyzed Benzylic C—H Functionalization, Oxidation and Cyclization of Methylarenes: Direct Access to 2‐Arylbenzothiazoles. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Wentao Yu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Wanqing Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
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25
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van Schie MMCH, Zhang W, Tieves F, Choi DS, Park CB, Burek BO, Bloh JZ, Arends IWCE, Paul CE, Alcalde M, Hollmann F. Cascading g-C3N4 and Peroxygenases for Selective Oxyfunctionalization Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01341] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Morten M. C. H. van Schie
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Wuyuan Zhang
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Da Som Choi
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Bastien O. Burek
- DECHEMA Forschungsinstitut, Theodor-Heuss-Allee 25, 60486 Frankfurt am Main, Germany
| | - Jonathan Z. Bloh
- DECHEMA Forschungsinstitut, Theodor-Heuss-Allee 25, 60486 Frankfurt am Main, Germany
| | - Isabel W. C. E. Arends
- University of Utrecht, Faculty of Science, Budapestlaan 6, 3584 CD Utrecht, The Netherlands
| | - Caroline E. Paul
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, 28049 Madrid, Spain
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
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26
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Pesic M, Willot SJP, Fernández-Fueyo E, Tieves F, Alcalde M, Hollmann F. Multienzymatic in situ hydrogen peroxide generation cascade for peroxygenase-catalysed oxyfunctionalisation reactions. ACTA ACUST UNITED AC 2019; 74:101-104. [PMID: 30379645 DOI: 10.1515/znc-2018-0137] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/04/2018] [Indexed: 01/02/2023]
Abstract
There is an increasing interest in the application of peroxygenases in biocatalysis, because of their ability to catalyse the oxyfunctionalisation reaction in a stereoselective fashion and with high catalytic efficiencies, while using hydrogen peroxide or organic peroxides as oxidant. However, enzymes belonging to this class exhibit a very low stability in the presence of peroxides. With the aim of bypassing this fast and irreversible inactivation, we study the use of a gradual supply of hydrogen peroxide to maintain its concentration at stoichiometric levels. In this contribution, we report a multienzymatic cascade for in situ generation of hydrogen peroxide. In the first step, in the presence of NAD+ cofactor, formate dehydrogenase from Candida boidinii (FDH) catalysed the oxidation of formate yielding CO2. Reduced NADH was reoxidised by the reduction of the flavin mononucleotide cofactor bound to an old yellow enzyme homologue from Bacillus subtilis (YqjM), which subsequently reacts with molecular oxygen yielding hydrogen peroxide. Finally, this system was coupled to the hydroxylation of ethylbenzene reaction catalysed by an evolved peroxygenase from Agrocybe aegerita (rAaeUPO). Additionally, we studied the influence of different reaction parameters on the performance of the cascade with the aim of improving the turnover of the hydroxylation reaction.
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Affiliation(s)
- Milja Pesic
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Sébastien Jean-Paul Willot
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Elena Fernández-Fueyo
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, 28049 Madrid, Spain
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
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27
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Burek BO, de Boer SR, Tieves F, Zhang W, van Schie M, Bormann S, Alcalde M, Holtmann D, Hollmann F, Bahnemann DW, Bloh JZ. Photoenzymatic Hydroxylation of Ethylbenzene Catalyzed by Unspecific Peroxygenase: Origin of Enzyme Inactivation and the Impact of Light Intensity and Temperature. ChemCatChem 2019. [DOI: 10.1002/cctc.201900610] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Bastien O. Burek
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
- Institut für Technische ChemieLeibniz Universität Hannover Callinstraße 3 30167 Hannover Germany
| | - Sabrina R. de Boer
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Florian Tieves
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Wuyuan Zhang
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Morten van Schie
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Sebastian Bormann
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Miguel Alcalde
- Department of BiocatalysisInstitute of Catalysis, CSIC 28049 Madrid Spain
| | - Dirk Holtmann
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
| | - Frank Hollmann
- Department of BiotechnologyDelft University of Technology Van der Maasweg 9 2629HZ Delft (The Netherlands
| | - Detlef W. Bahnemann
- Institut für Technische ChemieLeibniz Universität Hannover Callinstraße 3 30167 Hannover Germany
- Laboratory “Photoactive Nanocomposite Materials”Saint-Petersburg State University Ulyanovskaya str. 1, Peterhof Saint-Petersburg 198504 Russia
| | - Jonathan Z. Bloh
- Chemical Technology Group and Industrial Biotechnology GroupDECHEMA Forschungsinstitut Theodor-Heuss-Allee 25 60486 Frankfurt am Main Germany
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29
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Park M, Hong KI, Jin SM, Lee E, Jang WD, Ju SY. Helical Assembly of Flavin Mononucleotides on Carbon Nanotubes as Multimodal Near-IR Hg(II)-Selective Probes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8400-8411. [PMID: 30724070 DOI: 10.1021/acsami.8b18781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The development of novel methods to detect mercury is of paramount importance owing to the impact of this metal on human health and the environment. We observed that flavin mononucleotide (FMN) and its helical assembly with a single-walled carbon nanotube (SWNT) selectively bind Hg2+ arising from HgCl2 and MeHgCl. Absorption spectroscopic studies show that FMN preferentially forms a 2:1 rather than a 1:1 complex with Hg2+ at high FMN concentrations. On the basis of the analogy to the thymine-Hg-thymine complex, it is proposed that the 2:1 complex between FMN and Hg2+ comprises a Hg-bridged pair of FMN groups, regardless of the presence of SWNT. Upon addition of as little as a few hundred nanomoles of Hg2+, both FMN and FMN-SWNT exhibit absorption and photoluminescence (PL) changes. Moreover, FMN-SWNT displays simultaneous multiple sigmoidal changes in PL of SWNT tubes having different chiral vectors. Assessment of binding affinities using the Hill equation suggests that 2:1 and 1:1 complexes form between Hg2+ and FMN groups on the FMN-SWNT. Theoretical calculations indicate that optical changes of the FMN-SWNT originate from Hg-mediated conformational changes occurring on the helical array of FMN on the SWNT. High-resolution transmission electron microscopy revealed that the presence of Hg2+ in complexes with the FMN-SWNT enables visualization of helical periodic undulation of FMN groups along SWNT without the need for staining. Circular dichroism (CD) study revealed that FMN-SWNT whose CD signal mainly originates from FMN decreases dichroic bands upon the addition of Hg2+ owing to the formation of a centrosymmetric FMN-Hg-FMN triad on SWNT. The binding mode specificity and multimodal changes observed in response to Hg2+ ions suggest that systems based on FMN-SWNT can serve as in vivo NIR beacons for the detection of various mercury derivatives.
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Affiliation(s)
- Minsuk Park
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-Gu, Seoul 03722 , Republic of Korea
| | - Kyeong-Im Hong
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-Gu, Seoul 03722 , Republic of Korea
| | - Seon-Mi Jin
- Graduate School of Analytical Science and Technology , Chungnam National University , Daejeon 34134 , Republic of Korea
| | - Eunji Lee
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology (GIST) , Gwangju 61005 , Republic of Korea
| | - Woo-Dong Jang
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-Gu, Seoul 03722 , Republic of Korea
| | - Sang-Yong Ju
- Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seodaemun-Gu, Seoul 03722 , Republic of Korea
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30
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Willot SJP, Fernández-Fueyo E, Tieves F, Pesic M, Alcalde M, Arends IW, Park CB, Hollmann F. Expanding the Spectrum of Light-Driven Peroxygenase Reactions. ACS Catal 2019; 9:890-894. [PMID: 30775065 PMCID: PMC6369655 DOI: 10.1021/acscatal.8b03752] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/10/2018] [Indexed: 12/02/2022]
Abstract
![]()
Peroxygenases
require a controlled supply of H2O2 to operate
efficiently. Here, we propose a photocatalytic
system for the reductive activation of ambient O2 to produce
H2O2 which uses the energy provided by visible
light more efficiently based on the combination of wavelength-complementary
photosensitizers. This approach was coupled to an enzymatic system
to make formate available as a sacrificial electron donor. The scope
and current limitations of this approach are reported and discussed.
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Affiliation(s)
- Sébastien J.-P. Willot
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Elena Fernández-Fueyo
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Milja Pesic
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, 28049 Madrid, Spain
| | | | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
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31
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Zhang W, Hollmann F. Nonconventional regeneration of redox enzymes - a practical approach for organic synthesis? Chem Commun (Camb) 2018; 54:7281-7289. [PMID: 29714371 DOI: 10.1039/c8cc02219d] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidoreductases have become useful tools in the hands of chemists to perform selective and mild oxidation and reduction reactions. Instead of mimicking native catalytic cycles, generally involving costly and unstable nicotinamide cofactors, more direct, NAD(P)-independent methodologies are being developed. The promise of these approaches not only lies with simpler and cheaper reaction schemes but also with higher selectivity as compared to whole cell approaches and their mimics.
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Affiliation(s)
- Wuyuan Zhang
- Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands.
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32
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Lee SH, Choi DS, Kuk SK, Park CB. Photobiokatalyse: Aktivierung von Redoxenzymen durch direkten oder indirekten Transfer photoinduzierter Elektronen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710070] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sahng Ha Lee
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Republik Korea
| | - Da Som Choi
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Republik Korea
| | - Su Keun Kuk
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Republik Korea
| | - Chan Beum Park
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Republik Korea
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33
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Deazaflavins as photocatalysts for the direct reductive regeneration of flavoenzymes. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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34
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Lee SH, Choi DS, Kuk SK, Park CB. Photobiocatalysis: Activating Redox Enzymes by Direct or Indirect Transfer of Photoinduced Electrons. Angew Chem Int Ed Engl 2018; 57:7958-7985. [PMID: 29194901 DOI: 10.1002/anie.201710070] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/21/2017] [Indexed: 01/01/2023]
Abstract
Biocatalytic transformation has received increasing attention in the green synthesis of chemicals because of the diversity of enzymes, their high catalytic activities and specificities, and mild reaction conditions. The idea of solar energy utilization in chemical synthesis through the combination of photocatalysis and biocatalysis provides an opportunity to make the "green" process greener. Oxidoreductases catalyze redox transformation of substrates by exchanging electrons at the enzyme's active site, often with the aid of electron mediator(s) as a counterpart. Recent progress indicates that photoinduced electron transfer using organic (or inorganic) photosensitizers can activate a wide spectrum of redox enzymes to catalyze fuel-forming reactions (e.g., H2 evolution, CO2 reduction) and synthetically useful reductions (e.g., asymmetric reduction, oxygenation, hydroxylation, epoxidation, Baeyer-Villiger oxidation). This Review provides an overview of recent advances in light-driven activation of redox enzymes through direct or indirect transfer of photoinduced electrons.
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Affiliation(s)
- Sahng Ha Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 305-701, Republic of Korea
| | - Da Som Choi
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 305-701, Republic of Korea
| | - Su Keun Kuk
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 305-701, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon, 305-701, Republic of Korea
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35
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Dong JJ, Fernández-Fueyo E, Li J, Guo Z, Renirie R, Wever R, Hollmann F. Halofunctionalization of alkenes by vanadium chloroperoxidase from Curvularia inaequalis. Chem Commun (Camb) 2018; 53:6207-6210. [PMID: 28548142 DOI: 10.1039/c7cc03368k] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The vanadium-dependent chloroperoxidase from Curvularia inaequalis is a stable and efficient biocatalyst for the hydroxyhalogenation of a broad range of alkenes into halohydrins. Up to 1 200 000 TON with 69 s-1 TOF were observed for the biocatalyst. A bienzymatic cascade to yield epoxides as reaction products is presented.
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Affiliation(s)
- Jia Jia Dong
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
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36
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Abstract
A copper-catalyzed sulfoxidation of benzylic C-H bonds by nondirected oxidative C(sp3)-H activation was developed. The process proceeds via sulfenate anions, which are generated by base-triggered elimination of β-sulfinyl esters and benzyl radicals. The functional group tolerance is high, and the product yields are good.
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Affiliation(s)
- Hao Yu
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 , 52074 Aachen , Germany
| | - Zhen Li
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 , 52074 Aachen , Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 , 52074 Aachen , Germany
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37
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Gandomkar S, Dennig A, Dordic A, Hammerer L, Pickl M, Haas T, Hall M, Faber K. Biocatalytic Oxidative Cascade for the Conversion of Fatty Acids into α-Ketoacids via Internal H 2 O 2 Recycling. Angew Chem Int Ed Engl 2018; 57:427-430. [PMID: 29125663 PMCID: PMC5768024 DOI: 10.1002/anie.201710227] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Indexed: 11/18/2022]
Abstract
The functionalization of bio-based chemicals is essential to allow valorization of natural carbon sources. An atom-efficient biocatalytic oxidative cascade was developed for the conversion of saturated fatty acids to α-ketoacids. Employment of P450 monooxygenase in the peroxygenase mode for regioselective α-hydroxylation of fatty acids combined with enantioselective oxidation by α-hydroxyacid oxidase(s) resulted in internal recycling of the oxidant H2 O2 , thus minimizing degradation of ketoacid product and maximizing biocatalyst lifetime. The O2 -dependent cascade relies on catalytic amounts of H2 O2 and releases water as sole by-product. Octanoic acid was converted under mild conditions in aqueous buffer to 2-oxooctanoic acid in a simultaneous one-pot two-step cascade in up to >99 % conversion without accumulation of hydroxyacid intermediate. Scale-up allowed isolation of final product in 91 % yield and the cascade was applied to fatty acids of various chain lengths (C6:0 to C10:0).
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Affiliation(s)
- Somayyeh Gandomkar
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Alexander Dennig
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Andela Dordic
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
- Austrian Center of Industrial Biotechnology c/oDepartment of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Lucas Hammerer
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
- Austrian Center of Industrial Biotechnology c/oDepartment of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Mathias Pickl
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Thomas Haas
- CreavisEvonik Industries, Bau 1420Paul Baumann Strasse 145772MarlGermany
| | - Mélanie Hall
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Kurt Faber
- Department of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
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38
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Yang Z, Gong X, Wang B, Yang D, Fu T, Liu Y. Efficient in situ generation of H2O2 by novel magnesium–carbon nanotube composites. RSC Adv 2018; 8:35179-35186. [PMID: 35547046 PMCID: PMC9087374 DOI: 10.1039/c8ra05907a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 09/26/2018] [Indexed: 11/21/2022] Open
Abstract
Hydrogen peroxide (H2O2) is widely employed as an environmentally friendly chemical oxidant and an energy source. In this study, a novel magnesium–carbon nanotube composite was prepared by a ball milling process in argon atmosphere using polyvinylidene fluoride (PVDF) as a binder. The resulting material was then tested for the in situ generation of H2O2. The preparation and operation conditions of the composite were systemically investigated and analyzed to improve the efficiency of the in situ generation of H2O2. Under the optimized conditions, while aerating with oxygen for 60 min, a maximum H2O2 concentration of 194.73 mg L−1 was achieved by the Mg–CNTs composite prepared using Mg : CNT : PVDF with a weight ratio of 5 : 1 : 2.4. In the Mg–CNTs/O2 system, dissolved oxygen molecules were reduced to H2O2, while magnesium was oxidized owing to the electrochemical corrosion. In addition, a part of dissolved magnesium ions converted into magnesium hydroxide and precipitated as nanoflakes on the surfaces of CNTs. A mechanism was proposed, suggesting that the formation of a magnesium/carbon nanotubes corrosion cell on the Mg–CNT composite promoted the in situ synthesis of H2O2. Overall, this study provides a promising and environmentally friendly strategy to fabricate magnesium/CNT composites for the in situ generation of H2O2, which could be applied in energy conversion and advanced oxidation processes for refractory wastewater treatment. Mg–CNTs composite prepared by ball milling with PVDF promoted the in situ synthesis of H2O2.![]()
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Affiliation(s)
- Zhao Yang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Xiaobo Gong
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
- Key Laboratory of Treatment for Special Wastewater Treatment
| | - Bingqing Wang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Dan Yang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Tao Fu
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Yong Liu
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
- Key Laboratory of Treatment for Special Wastewater Treatment
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39
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Gandomkar S, Dennig A, Dordic A, Hammerer L, Pickl M, Haas T, Hall M, Faber K. Eine biokatalytische oxidative Kaskade für die Umsetzung von Fettsäuren zu α-Ketosäuren mit interner H2
O2
-Regeneration. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710227] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Somayyeh Gandomkar
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Alexander Dennig
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Andela Dordic
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
- Austrian Center of Industrial Biotechnology c/o; Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Lucas Hammerer
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
- Austrian Center of Industrial Biotechnology c/o; Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Mathias Pickl
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Thomas Haas
- Creavis; Evonik Industries, Bau 1420; Paul Baumann Straße 1 45772 Marl Deutschland
| | - Mélanie Hall
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
| | - Kurt Faber
- Institut für Chemie; Universität Graz; Heinrichstraße 28 8010 Graz Österreich
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