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Davis V, Frielingsdorf S, Hu Q, Elsäßer P, Balzer BN, Lenz O, Zebger I, Fischer A. Ultrathin Film Antimony-Doped Tin Oxide Prevents [NiFe] Hydrogenase Inactivation at High Electrode Potentials. ACS APPLIED MATERIALS & INTERFACES 2024; 16:44802-44816. [PMID: 39160667 DOI: 10.1021/acsami.4c08218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
For hydrogenases to serve as effective electrocatalysts in hydrogen biotechnological devices, such as enzymatic fuel cells, it is imperative to design electrodes that facilitate stable and functional enzyme immobilization, efficient substrate accessibility, and effective interfacial electron transfer. Recent years have seen considerable advancements in this area, particularly concerning hydrogenases. However, a significant limitation remains: the inactivation of hydrogenases at high oxidative potentials across most developed electrodes. Addressing this issue necessitates a thorough understanding of the interactions between the enzyme and the electrode surface. In this study, we employ ATR-IR spectroscopy combined with electrochemistry in situ to investigate the interaction mechanisms, electrocatalytic behavior, and stability of the oxygen-tolerant membrane-bound [NiFe] hydrogenase from Cupriavidus necator (MBH), which features a His-tag on its small subunit C-terminus. Antimony-doped tin oxide (ATO) thin films were selected as electrodes due to their protein compatibility, suitable potential window, conductivity, and transparency, making them an ideal platform for spectroelectrochemical measurements. Our comprehensive examination of the physiological and electrochemical processes of [NiFe] MBH on ATO thin film electrodes demonstrates that by tuning the electron transport properties of the ATO thin film, we can prevent MBH inactivation at extended oxidative potentials while maintaining direct electron transfer between the enzyme and the electrode.
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Affiliation(s)
- Victoria Davis
- Institute of Inorganic and Analytical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
- Freiburger Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, 79104 Freiburg, Germany
| | - Stefan Frielingsdorf
- Institute of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135 & 124, 10623 Berlin, Germany
| | - Qiwei Hu
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Institute of Physical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Patrick Elsäßer
- Institute of Inorganic and Analytical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Bizan N Balzer
- Freiburger Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
- Institute of Physical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Oliver Lenz
- Institute of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135 & 124, 10623 Berlin, Germany
| | - Ingo Zebger
- Institute of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135 & 124, 10623 Berlin, Germany
| | - Anna Fischer
- Institute of Inorganic and Analytical Chemistry, University of Freiburg, Albertstr. 21, 79104 Freiburg, Germany
- Freiburger Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Str. 21, 79104 Freiburg, Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies, University of Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
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Ly KH, Weidinger IM. Understanding active sites in molecular (photo)electrocatalysis through complementary vibrational spectroelectrochemistry. Chem Commun (Camb) 2021; 57:2328-2342. [DOI: 10.1039/d0cc07376h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highlighting vibrational spectroelectrochemistry for the investigation of synthetic molecular (photo) electrocatalysts for key energy conversion reactions.
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Affiliation(s)
- Khoa H. Ly
- Lehrstuhl für Elektrochemie
- Fakultät für Chemie und Lebensmittelchemie
- Technische Universität Dresden
- Andreas-Schubert-Bau
- Zellescher Weg 19
| | - Inez M. Weidinger
- Lehrstuhl für Elektrochemie
- Fakultät für Chemie und Lebensmittelchemie
- Technische Universität Dresden
- Andreas-Schubert-Bau
- Zellescher Weg 19
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Zhang G, Kucernak A. Gas Accessible Membrane Electrode (GAME): A Versatile Platform for Elucidating Electrocatalytic Processes Using Real-Time and in Situ Hyphenated Electrochemical Techniques. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02433] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guohui Zhang
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Anthony Kucernak
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
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Kornienko N, Ly KH, Robinson WE, Heidary N, Zhang JZ, Reisner E. Advancing Techniques for Investigating the Enzyme-Electrode Interface. Acc Chem Res 2019; 52:1439-1448. [PMID: 31042353 PMCID: PMC6533600 DOI: 10.1021/acs.accounts.9b00087] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
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Enzymes are the essential catalytic components of biology and adsorbing
redox-active enzymes on electrode surfaces enables the direct probing
of their function. Through standard electrochemical measurements,
catalytic activity, reversibility and stability, potentials of redox-active
cofactors, and interfacial electron transfer rates can be readily
measured. Mechanistic investigations on the high electrocatalytic
rates and selectivity of enzymes may yield inspiration for the design
of synthetic molecular and heterogeneous electrocatalysts. Electrochemical
investigations of enzymes also aid in our understanding of their activity
within their biological environment and why they evolved in their
present structure and function. However, the conventional array of
electrochemical techniques (e.g., voltammetry and chronoamperometry)
alone offers a limited picture of the enzyme–electrode interface. How many enzymes are loaded onto an electrode? In which orientation(s)
are they bound? What fraction is active, and are single or multilayers
formed? Does this static picture change over time, applied voltage,
or chemical environment? How does charge transfer through various
intraprotein cofactors contribute to the overall performance and catalytic
bias? What is the distribution of individual enzyme activities within
an ensemble of active protein films? These are central questions for
the understanding of the enzyme–electrode interface, and a
multidisciplinary approach is required to deliver insightful answers. Complementing standard electrochemical experiments with an orthogonal
set of techniques has recently allowed to provide a more complete
picture of enzyme–electrode systems. Within this framework,
we first discuss a brief history of achievements and challenges in
enzyme electrochemistry. We subsequently describe how the aforementioned
challenges can be overcome by applying advanced electrochemical techniques,
quartz-crystal microbalance measurements, and spectroscopic, namely,
resonance Raman and infrared, analysis. For example, rotating ring
disk electrochemistry permits the simultaneous determination of reaction
kinetics and quantification of generated products. In addition, recording
changes in frequency and dissipation in a quartz crystal microbalance
allows to shed light into enzyme loading, relative orientation, clustering,
and denaturation at the electrode surface. Resonance Raman spectroscopy
yields information on ligation and redox state of enzyme cofactors,
whereas infrared spectroscopy provides insights into active site states
and the protein secondary and tertiary structure. The development
of these emerging methods for the analysis of the enzyme–electrode
interface is the primary focus of this Account. We also take a critical
look at the remaining gaps in our understanding and challenges lying
ahead toward attaining a complete mechanistic picture of the enzyme–electrode
interface.
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Affiliation(s)
- Nikolay Kornienko
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Department of Chemistry, Université de Montréal, Roger-Gaudry Building, Montreal, Quebec H3C 3J7, Canada
| | - Khoa H. Ly
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Fakultät für Chemie und Lebensmittelchemie, Technische Universität Dresden, 01062 Dresden, Germany
| | - William E. Robinson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Nina Heidary
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Department of Chemistry, Université de Montréal, Roger-Gaudry Building, Montreal, Quebec H3C 3J7, Canada
| | - Jenny Z. Zhang
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Erwin Reisner
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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PEREIRA ANDRESSAR, SEDENHO GRAZIELAC, SOUZA JOÃOCPDE, CRESPILHO FRANKN. Advances in enzyme bioelectrochemistry. ACTA ACUST UNITED AC 2018; 90:825-857. [DOI: 10.1590/0001-3765201820170514] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/11/2017] [Indexed: 11/21/2022]
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de Souza JCP, Silva WO, Lima FHB, Crespilho FN. Enzyme activity evaluation by differential electrochemical mass spectrometry. Chem Commun (Camb) 2017; 53:8400-8402. [DOI: 10.1039/c7cc03963h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A broad mass spectrometry technique with bioelectrochemical control provides new insight into the enzyme kinetics and mechanisms.
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Affiliation(s)
- João C. P. de Souza
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
- Goiano Federal Institute
| | - Wanderson O. Silva
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Fabio H. B. Lima
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
| | - Frank N. Crespilho
- São Carlos Institute of Chemistry
- University of São Paulo
- São Carlos
- Brazil
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Healy AJ, Ash PA, Lenz O, Vincent KA. Attenuated total reflectance infrared spectroelectrochemistry at a carbon particle electrode; unmediated redox control of a [NiFe]-hydrogenase solution. Phys Chem Chem Phys 2013; 15:7055-9. [DOI: 10.1039/c3cp00119a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Healy AJ, Reeve HA, Parkin A, Vincent KA. Electrically conducting particle networks in polymer electrolyte as three-dimensional electrodes for hydrogenase electrocatalysis. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.01.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ash PA, Vincent KA. Spectroscopic analysis of immobilised redox enzymes under direct electrochemical control. Chem Commun (Camb) 2011; 48:1400-9. [PMID: 22057715 DOI: 10.1039/c1cc15871f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article reviews recent developments in spectroscopic analysis of electrode-immobilised enzymes under direct, unmediated electrochemical control. These methods unite the suite of spectroscopic methods available for characterisation of structural, electronic and coordination changes in proteins with the exquisite control over complex redox enzymes that can be achieved in protein film electrochemistry in which immobilised protein molecules exchange electrons directly with an electrode. This combination is particularly powerful in studies of highly active enzymes where redox states can be controlled even under fast electrocatalytic turnover. We examine examples in which UV-visible, IR, Raman and MCD spectroscopy have been combined with direct electrochemistry to probe redox-dependent chemistry, and consider future opportunities for 'direct' spectroelectrochemistry of immobilised enzymes.
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Affiliation(s)
- Philip A Ash
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
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Gates AJ, Kemp GL, To CY, Mann J, Marritt SJ, Mayes AG, Richardson DJ, Butt JN. The relationship between redox enzyme activity and electrochemical potential—cellular and mechanistic implications from protein film electrochemistry. Phys Chem Chem Phys 2011; 13:7720-31. [DOI: 10.1039/c0cp02887h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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