1
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Liu YC, Chu KT, Wang HR, Lee GH, Tseng MC, Wang CH, Horng YC, Chiang MH. Chloride- and Hydrosulfide-Bound 2Fe Complexes as Models of the Oxygen-Stable State of [FeFe] Hydrogenase. Angew Chem Int Ed Engl 2024; 63:e202408142. [PMID: 38818643 DOI: 10.1002/anie.202408142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/01/2024]
Abstract
[FeFe] hydrogenases demonstrate remarkable catalytic efficiency in hydrogen evolution and oxidation processes. However, susceptibility of these enzymes to oxygen-induced degradation impedes their practical deployment in hydrogen-production devices and fuel cells. Recent investigations into the oxygen-stable (Hinact) state of the H-cluster revealed its inherent capacity to resist oxygen degradation. Herein, we present findings on Cl- and SH-bound [2Fe-2S] complexes, bearing relevance to the oxygen-stable state within a biological context. A characteristic attribute of these complexes is the terminal Cl-/SH- ligation to the iron center bearing the CO bridge. Structural analysis of the t-Cl demonstrates a striking resemblance to the Hinact state of DdHydAB and CbA5H. The t-Cl/t-SH exhibit reversible oxidation, with both redox species, electronically, being the first biomimetic analogs to the Htrans and Hinact states. These complexes exhibit notable resistance against oxygen-induced decomposition, supporting the potential oxygen-resistant nature of the Htrans and Hinact states. The swift reductive release of the Cl-/SH-group demonstrates its labile and kinetically controlled binding. The findings garnered from these investigations offer valuable insights into properties of the enzymatic O2-stable state, and key factors governing deactivation and reactivation conversion. This work contributes to the advancement of bio-inspired molecular catalysts and the integration of enzymes and artificial catalysts into H2-evolution devices and fuel-cell applications.
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Affiliation(s)
- Yu-Chiao Liu
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
| | - Kai-Ti Chu
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
| | - Hong-Ru Wang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan
| | - Mei-Chun Tseng
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
| | - Cheng-Hsin Wang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
| | - Yih-Chern Horng
- Department of Chemistry, National Changhua University of Education, Changhua, 500, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei, 115, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
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2
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Fasano A, Fourmond V, Léger C. Outer-sphere effects on the O 2 sensitivity, catalytic bias and catalytic reversibility of hydrogenases. Chem Sci 2024; 15:5418-5433. [PMID: 38638217 PMCID: PMC11023054 DOI: 10.1039/d4sc00691g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 03/15/2024] [Indexed: 04/20/2024] Open
Abstract
The comparison of homologous metalloenzymes, in which the same inorganic active site is surrounded by a variable protein matrix, has demonstrated that residues that are remote from the active site may have a great influence on catalytic properties. In this review, we summarise recent findings on the diverse molecular mechanisms by which the protein matrix may define the oxygen tolerance, catalytic directionality and catalytic reversibility of hydrogenases, enzymes that catalyse the oxidation and evolution of H2. These mechanisms involve residues in the second coordination sphere of the active site metal ion, more distant residues affecting protein flexibility through their side chains, residues lining the gas channel and even accessory subunits. Such long-distance effects, which contribute to making enzymes efficient, robust and different from one another, are a source of wonder for biochemists and a challenge for synthetic bioinorganic chemists.
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Affiliation(s)
- Andrea Fasano
- Laboratoire de Bioénergétique et Ingénierie des Protéines, CNRS, Aix Marseille Université, UMR 7281 Marseille France
| | - Vincent Fourmond
- Laboratoire de Bioénergétique et Ingénierie des Protéines, CNRS, Aix Marseille Université, UMR 7281 Marseille France
| | - Christophe Léger
- Laboratoire de Bioénergétique et Ingénierie des Protéines, CNRS, Aix Marseille Université, UMR 7281 Marseille France
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3
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Martini MA, Bikbaev K, Pang Y, Lorent C, Wiemann C, Breuer N, Zebger I, DeBeer S, Span I, Bjornsson R, Birrell JA, Rodríguez-Maciá P. Binding of exogenous cyanide reveals new active-site states in [FeFe] hydrogenases. Chem Sci 2023; 14:2826-2838. [PMID: 36937599 PMCID: PMC10016341 DOI: 10.1039/d2sc06098a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 02/07/2023] [Indexed: 02/10/2023] Open
Abstract
[FeFe] hydrogenases are highly efficient metalloenyzmes for hydrogen conversion. Their active site cofactor (the H-cluster) is composed of a canonical [4Fe-4S] cluster ([4Fe-4S]H) linked to a unique organometallic di-iron subcluster ([2Fe]H). In [2Fe]H the two Fe ions are coordinated by a bridging 2-azapropane-1,3-dithiolate (ADT) ligand, three CO and two CN- ligands, leaving an open coordination site on one Fe where substrates (H2 and H+) as well as inhibitors (e.g. O2, CO, H2S) may bind. Here, we investigate two new active site states that accumulate in [FeFe] hydrogenase variants where the cysteine (Cys) in the proton transfer pathway is mutated to alanine (Ala). Our experimental data, including atomic resolution crystal structures and supported by calculations, suggest that in these two states a third CN- ligand is bound to the apical position of [2Fe]H. These states can be generated both by "cannibalization" of CN- from damaged [2Fe]H subclusters as well as by addition of exogenous CN-. This is the first detailed spectroscopic and computational characterisation of the interaction of exogenous CN- with [FeFe] hydrogenases. Similar CN--bound states can also be generated in wild-type hydrogenases, but do not form as readily as with the Cys to Ala variants. These results highlight how the interaction between the first amino acid in the proton transfer pathway and the active site tunes ligand binding to the open coordination site and affects the electronic structure of the H-cluster.
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Affiliation(s)
- Maria Alessandra Martini
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Konstantin Bikbaev
- Department of Chemistry and Pharmacy, Friedrich Alexander University Erlangen-Nürnberg Bioinorganic Chemistry Erlangen Germany
| | - Yunjie Pang
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
- College of Chemistry, Beijing Normal University 100875 Beijing China
| | - Christian Lorent
- Institut für Chemie, Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin Germany
| | - Charlotte Wiemann
- Institut für Chemie, Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin Germany
- Ruanda-Zentrum und Büro für Afrika-Kooperationen, Universität Koblenz-Landau, Universitätsstraße 1 56070 Koblenz Germany
| | - Nina Breuer
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Ingo Zebger
- Institut für Chemie, Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin Germany
| | - Serena DeBeer
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Ingrid Span
- Department of Chemistry and Pharmacy, Friedrich Alexander University Erlangen-Nürnberg Bioinorganic Chemistry Erlangen Germany
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux 17 Rue des Martyrs F-38054 Grenoble Cedex France
| | - James A Birrell
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
- School of Life Sciences, University of Essex Colchester CO4 3SQ UK
| | - Patricia Rodríguez-Maciá
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford South Parks Road Oxford OX1 3QR UK
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4
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Zamader A, Reuillard B, Marcasuzaa P, Bousquet A, Billon L, Espí Gallart JJ, Berggren G, Artero V. Electrode Integration of Synthetic Hydrogenase as Bioinspired and Noble Metal-Free Cathodes for Hydrogen Evolution. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Afridi Zamader
- Univ Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 Rue des Martyrs, Grenoble, Cedex F-38054, France
- Department of Chemistry─Ångström Laboratory, Uppsala University, Box 523, Uppsala SE-75120, Sweden
| | - Bertrand Reuillard
- Univ Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 Rue des Martyrs, Grenoble, Cedex F-38054, France
| | - Pierre Marcasuzaa
- Universite de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
- Bio-inspired Materials Group: Functionalities & Self-Assembly, Universite de Pau et des Pays de l’Adour, E2S UPPA, Pau 64053, France
| | - Antoine Bousquet
- Universite de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
| | - Laurent Billon
- Universite de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Pau 64053, France
- Bio-inspired Materials Group: Functionalities & Self-Assembly, Universite de Pau et des Pays de l’Adour, E2S UPPA, Pau 64053, France
| | - Jose Jorge Espí Gallart
- Eurecat, Centre Tecnologic de Catalunya, Waste, Energy and Environmental Impact Unit, Manresa 08243, Spain
| | - Gustav Berggren
- Department of Chemistry─Ångström Laboratory, Uppsala University, Box 523, Uppsala SE-75120, Sweden
| | - Vincent Artero
- Univ Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 Rue des Martyrs, Grenoble, Cedex F-38054, France
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5
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Unusual structures and unknown roles of FeS clusters in metalloenzymes seen from a resonance Raman spectroscopic perspective. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214287] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Boncella AE, Sabo ET, Santore RM, Carter J, Whalen J, Hudspeth JD, Morrison CN. The expanding utility of iron-sulfur clusters: Their functional roles in biology, synthetic small molecules, maquettes and artificial proteins, biomimetic materials, and therapeutic strategies. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214229] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Felbek C, Arrigoni F, de Sancho D, Jacq-Bailly A, Best RB, Fourmond V, Bertini L, Léger C. Mechanism of Hydrogen Sulfide-Dependent Inhibition of FeFe Hydrogenase. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christina Felbek
- Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, Institut Microbiologie, Bioénergies et Biotechnologie, CNRS, Aix Marseille Université, Marseille Cedex 20 13402, France
| | - Federica Arrigoni
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan 20126, Italy
| | - David de Sancho
- Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU & Donostia International Physics Center (DIPC), PK 1072, 20080 Donostia-San Sebastián, Spain
| | - Aurore Jacq-Bailly
- Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, Institut Microbiologie, Bioénergies et Biotechnologie, CNRS, Aix Marseille Université, Marseille Cedex 20 13402, France
| | - Robert B. Best
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health (NIH), Bethesda, Maryland 20892-0520, United States
| | - Vincent Fourmond
- Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, Institut Microbiologie, Bioénergies et Biotechnologie, CNRS, Aix Marseille Université, Marseille Cedex 20 13402, France
| | - Luca Bertini
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan 20126, Italy
| | - Christophe Léger
- Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, Institut Microbiologie, Bioénergies et Biotechnologie, CNRS, Aix Marseille Université, Marseille Cedex 20 13402, France
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8
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Castañeda‐Losada L, Adam D, Paczia N, Buesen D, Steffler F, Sieber V, Erb TJ, Richter M, Plumeré N. Bioelectrocatalytic Cofactor Regeneration Coupled to CO 2 Fixation in a Redox-Active Hydrogel for Stereoselective C-C Bond Formation. Angew Chem Int Ed Engl 2021; 60:21056-21061. [PMID: 34081832 PMCID: PMC8518881 DOI: 10.1002/anie.202103634] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/20/2021] [Indexed: 01/05/2023]
Abstract
The sustainable capture and conversion of carbon dioxide (CO2 ) is key to achieving a circular carbon economy. Bioelectrocatalysis, which aims at using renewable energies to power the highly specific, direct transformation of CO2 into value added products, holds promise to achieve this goal. However, the functional integration of CO2 -fixing enzymes onto electrode materials for the electrosynthesis of stereochemically complex molecules remains to be demonstrated. Here, we show the electricity-driven regio- and stereoselective incorporation of CO2 into crotonyl-CoA by an NADPH-dependent enzymatic reductive carboxylation. Co-immobilization of a ferredoxin NADP+ reductase and crotonyl-CoA carboxylase/reductase within a 2,2'-viologen-modified hydrogel enabled iterative NADPH recycling and stereoselective formation of (2S)-ethylmalonyl-CoA, a prospective intermediate towards multi-carbon products from CO2 , with 92±6 % faradaic efficiency and at a rate of 1.6±0.4 μmol cm-2 h-1 . This approach paves the way for realizing even more complex bioelectrocatalyic cascades in the future.
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Affiliation(s)
- Leonardo Castañeda‐Losada
- Center for Electrochemical SciencesRuhr-Universität BochumUniversitätsstrasse 15044780BochumGermany
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBSchulgasse 11a94315StraubingGermany
| | - David Adam
- Department of Biochemistry and Synthetic MetabolismMax-Planck Institute for Terrestrial MicrobiologyKarl-von-Frisch-Strasse 1035043MarburgGermany
| | - Nicole Paczia
- Department of Biochemistry and Synthetic MetabolismMax-Planck Institute for Terrestrial MicrobiologyKarl-von-Frisch-Strasse 1035043MarburgGermany
| | - Darren Buesen
- Center for Electrochemical SciencesRuhr-Universität BochumUniversitätsstrasse 15044780BochumGermany
- Technical University MunichCampus Straubing for Biotechnology and SustainabilitySchulgasse 1694315StraubingGermany
| | - Fabian Steffler
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBSchulgasse 11a94315StraubingGermany
- Present address: Fraunhofer Center for Chemical-Biotechnological Processes CBPAm Haupttor (Gate 12, Building 1251)06237LeunaGermany
| | - Volker Sieber
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBSchulgasse 11a94315StraubingGermany
- Technical University MunichCampus Straubing for Biotechnology and SustainabilitySchulgasse 1694315StraubingGermany
| | - Tobias J. Erb
- Department of Biochemistry and Synthetic MetabolismMax-Planck Institute for Terrestrial MicrobiologyKarl-von-Frisch-Strasse 1035043MarburgGermany
| | - Michael Richter
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGBSchulgasse 11a94315StraubingGermany
| | - Nicolas Plumeré
- Center for Electrochemical SciencesRuhr-Universität BochumUniversitätsstrasse 15044780BochumGermany
- Technical University MunichCampus Straubing for Biotechnology and SustainabilitySchulgasse 1694315StraubingGermany
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9
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Castañeda‐Losada L, Adam D, Paczia N, Buesen D, Steffler F, Sieber V, Erb TJ, Richter M, Plumeré N. Bioelektrokatalytische Cofaktor‐Regeneration und CO
2
‐Fixierung in einem redoxaktiven Hydrogel durch stereoselektive C‐C‐Bindungsknüpfung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Leonardo Castañeda‐Losada
- Zentrum für Elektrochemie Ruhr-Universität Bochum Universitätsstraße 150 44780 Bochum Deutschland
- Fraunhofer Institut für Grenzflächen- und Bioverfahrenstechnik IGB Schulgasse 11a 94315 Straubing Deutschland
| | - David Adam
- Department für Biochemie und Synthetischen Metabolismus Max-Planck-Institut für Terrestrische Mikrobiologie Karl-von-Frisch-Straße 10 35043 Marburg Deutschland
| | - Nicole Paczia
- Department für Biochemie und Synthetischen Metabolismus Max-Planck-Institut für Terrestrische Mikrobiologie Karl-von-Frisch-Straße 10 35043 Marburg Deutschland
| | - Darren Buesen
- Zentrum für Elektrochemie Ruhr-Universität Bochum Universitätsstraße 150 44780 Bochum Deutschland
- Technische Universität München Campus Straubing für Biotechnologie und Nachhaltigkeit Schulgasse 16 94315 Straubing Deutschland
| | - Fabian Steffler
- Fraunhofer Institut für Grenzflächen- und Bioverfahrenstechnik IGB Schulgasse 11a 94315 Straubing Deutschland
- Derzeitige Adresse: Fraunhofer-Zentrum für Chemisch-Biotechnologische Prozesse CBP Am Haupttor (Tor 12, Gebäude 1251) 06237 Leuna Deutschland
| | - Volker Sieber
- Fraunhofer Institut für Grenzflächen- und Bioverfahrenstechnik IGB Schulgasse 11a 94315 Straubing Deutschland
- Technische Universität München Campus Straubing für Biotechnologie und Nachhaltigkeit Schulgasse 16 94315 Straubing Deutschland
| | - Tobias J. Erb
- Department für Biochemie und Synthetischen Metabolismus Max-Planck-Institut für Terrestrische Mikrobiologie Karl-von-Frisch-Straße 10 35043 Marburg Deutschland
| | - Michael Richter
- Fraunhofer Institut für Grenzflächen- und Bioverfahrenstechnik IGB Schulgasse 11a 94315 Straubing Deutschland
| | - Nicolas Plumeré
- Zentrum für Elektrochemie Ruhr-Universität Bochum Universitätsstraße 150 44780 Bochum Deutschland
- Technische Universität München Campus Straubing für Biotechnologie und Nachhaltigkeit Schulgasse 16 94315 Straubing Deutschland
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10
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Abstract
Efficient electrocatalytic energy conversion requires the devices to function reversibly, i.e. deliver a significant current at minimal overpotential. Redox-active films can effectively embed and stabilise molecular electrocatalysts, but mediated electron transfer through the film typically makes the catalytic response irreversible. Here, we describe a redox-active film for bidirectional (oxidation or reduction) and reversible hydrogen conversion, consisting of [FeFe] hydrogenase embedded in a low-potential, 2,2’-viologen modified hydrogel. When this catalytic film served as the anode material in a H2/O2 biofuel cell, an open circuit voltage of 1.16 V was obtained - a benchmark value near the thermodynamic limit. The same film also acted as a highly energy efficient cathode material for H2 evolution. We explained the catalytic properties using a kinetic model, which shows that reversibility can be achieved despite intermolecular electron transfer being slower than catalysis. This understanding of reversibility simplifies the design principles of highly efficient and stable bioelectrocatalytic films, advancing their implementation in energy conversion.
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11
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Felbek C, Hardt S, Papini C, Pramanik D, Artero V, Fontecave M, Fourmond V, Plumeré N, Léger C. Artificial maturation of [FeFe] hydrogenase in a redox polymer film. Chem Commun (Camb) 2021; 57:1750-1753. [PMID: 33469641 DOI: 10.1039/d0cc08168j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate that the insertion of the dinuclear active site of [FeFe] hydrogenase into the apo-enzyme can occur when the enzyme is embedded in a film of redox polymer, under conditions of mediated electron transfer. The maturation can be monitored by electrochemistry, and is as fast as under conditions of direct electron transfer. This new approach further clears the way to the implementation of hydrogenases in large scale real life processes.
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Affiliation(s)
- Christina Felbek
- CNRS, Aix-Marseille Université, Laboratoire de Bioénergétique et Ingénierie des Protéines, Marseille, France.
| | - Steffen Hardt
- Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, Bochum D-44780, Germany
| | - Cecilia Papini
- Laboratoire de Chimie des Processus Biologiques, Collège de France, Université Pierre et Marie Curie, CNRS UMR 8229, PSL Research University, 11 place Marcelin Berthelot, Paris 75005, France
| | - Debajyoti Pramanik
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, Grenoble 38000, France
| | - Vincent Artero
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, Grenoble 38000, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, Collège de France, Université Pierre et Marie Curie, CNRS UMR 8229, PSL Research University, 11 place Marcelin Berthelot, Paris 75005, France
| | - Vincent Fourmond
- CNRS, Aix-Marseille Université, Laboratoire de Bioénergétique et Ingénierie des Protéines, Marseille, France.
| | - Nicolas Plumeré
- Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, Bochum D-44780, Germany and Campus Straubing for Biotechnology and Sustainability, Technical University Munich, Schulgasse 22, Straubing 94315, Germany
| | - Christophe Léger
- CNRS, Aix-Marseille Université, Laboratoire de Bioénergétique et Ingénierie des Protéines, Marseille, France.
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12
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Abstract
[FeFe] hydrogenases, which are considered the most active naturally occurring catalysts for hydrogen oxidation and proton reduction, are extensively studied as models to learn the important features for efficient H2 conversion catalysis. Using infrared spectroscopy as a selective probe, the redox behaviour of the active site H-cluster is routinely modelled with thermodynamic schemes based on the Nernst equation for determining thermodynamic parameters, such as redox midpoint potentials and pKa values. Here, the thermodynamic models usually applied to [FeFe] hydrogenases are introduced and discussed in a pedagogic fashion and their applicability to additional metalloenzymes and molecular catalysts is also addressed.
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13
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Rodríguez-Maciá P, Breuer N, DeBeer S, Birrell JA. Insight into the Redox Behavior of the [4Fe–4S] Subcluster in [FeFe] Hydrogenases. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02771] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Patricia Rodríguez-Maciá
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Nina Breuer
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - Serena DeBeer
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
| | - James A. Birrell
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, Mülheim an der Ruhr 45470, Germany
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