1
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Al‐Shaibani MAS, Sakoleva T, Živković LA, Austin HP, Dörr M, Hilfert L, Haak E, Bornscheuer UT, Vidaković‐Koch T. Product Distribution of Steady-State and Pulsed Electrochemical Regeneration of 1,4-NADH and Integration with Enzymatic Reaction. ChemistryOpen 2024; 13:e202400064. [PMID: 38607952 PMCID: PMC11319214 DOI: 10.1002/open.202400064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 03/19/2024] [Indexed: 04/14/2024] Open
Abstract
The direct electrochemical reduction of nicotinamide adenine dinucleotide (NAD+) results in various products, complicating the regeneration of the crucial 1,4-NADH cofactor for enzymatic reactions. Previous research primarily focused on steady-state polarization to examine potential impacts on product selectivity. However, this study explores the influence of dynamic conditions on the selectivity of NAD+ reduction products by comparing two dynamic profiles with steady-state conditions. Our findings reveal that the main products, including 1,4-NADH, several dimers, and ADP-ribose, remained consistent across all conditions. A minor by-product, 1,6-NADH, was also identified. The product distribution varied depending on the experimental conditions (steady state vs. dynamic) and the concentration of NAD+, with higher concentrations and overpotentials promoting dimerization. The optimal yield of 1,4-NADH was achieved under steady-state conditions with low overpotential and NAD+ concentrations. While dynamic conditions enhanced the 1,4-NADH yield at shorter reaction times, they also resulted in a significant amount of unidentified products. Furthermore, this study assessed the potential of using pulsed electrochemical regeneration of 1,4-NADH with enoate reductase (XenB) for cyclohexenone reduction.
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Affiliation(s)
- Mohammed Ali Saif Al‐Shaibani
- Electrochemical Energy ConversionMax Planck Institute for Dynamics of Complex Technical SystemsSandtorstraße 139106MagdeburgGermany
| | - Thaleia Sakoleva
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Str. 417487GreifswaldGermany
| | - Luka A. Živković
- Electrochemical Energy ConversionMax Planck Institute for Dynamics of Complex Technical SystemsSandtorstraße 139106MagdeburgGermany
| | - Harry P. Austin
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Str. 417487GreifswaldGermany
| | - Mark Dörr
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Str. 417487GreifswaldGermany
| | - Liane Hilfert
- Institute of ChemistryOtto von Guericke UniversityUniversitätsplatz 239106MagdeburgGermany
| | - Edgar Haak
- Institute of ChemistryOtto von Guericke UniversityUniversitätsplatz 239106MagdeburgGermany
| | - Uwe T. Bornscheuer
- Institute of BiochemistryUniversity of GreifswaldFelix-Hausdorff-Str. 417487GreifswaldGermany
| | - Tanja Vidaković‐Koch
- Electrochemical Energy ConversionMax Planck Institute for Dynamics of Complex Technical SystemsSandtorstraße 139106MagdeburgGermany
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2
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Yekta R, Xiong X, Li J, Heater BS, Lee MM, Chan MK. Mechanoresponsive Protein Crystals for NADH Recycling in Multicycle Enzyme Reactions. J Am Chem Soc 2024; 146:18817-18822. [PMID: 38968608 PMCID: PMC11258682 DOI: 10.1021/jacs.4c04725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/07/2024]
Abstract
NAD(H)-dependent enzymes play a crucial role in the biosynthesis of pharmaceuticals and fine chemicals, but the limited recyclability of the NAD(H) cofactor hinders its more general application. Here, we report the generation of mechano-responsive PEI-modified Cry3Aa protein crystals and their use for NADH recycling over multiple reaction cycles. For demonstration of its practical utility, a complementary Cry3Aa protein particle containing genetically encoded and co-immobilized formate dehydrogenase for NADH regeneration and leucine dehydrogenase for catalyzing the NADH-dependent l-tert-leucine (l-tert-Leu) biosynthesis has been produced. When combined with the PEI-modified Cry3Aa crystal, the resultant reaction system could be used for the efficient biosynthesis of l-tert-Leu for up to 21 days with a 10.5-fold improvement in the NADH turnover number.
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Affiliation(s)
- Reza Yekta
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
| | - Xu Xiong
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
| | - Jiaxin Li
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
| | - Bradley S. Heater
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
| | - Marianne M. Lee
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
| | - Michael K. Chan
- School of Life Sciences & Center
of Novel Biomaterials, The Chinese University
of Hong Kong, Shatin, Hong Kong S.A.R. 999077
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3
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Meyer J, Romero M, Thöming J, Baune M, Reimer N, Dringen R, Bösing I. Experimental insights into electrocatalytic [Cp*Rh(bpy)Cl] + mediated NADH regeneration. Sci Rep 2023; 13:22394. [PMID: 38104175 PMCID: PMC10725497 DOI: 10.1038/s41598-023-49021-4] [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: 08/17/2023] [Accepted: 12/03/2023] [Indexed: 12/19/2023] Open
Abstract
NADH plays a crucial role in many enzymatically catalysed reactions. Due to the high costs of NADH a regeneration mechanism of this cofactor can enlarge the applications of enzymatic reactions dramatically. This paper gives a thorough system analysis of the mediated electrochemical regeneration of active NADH using cyclic voltammograms and potentiostatic measurements with varying pH, electrode potential, and electrolyte solution, highlighting the system's limiting conditions, elucidating optimal working parameters for the electrochemical reduction of NAD+, and bringing new insight on the oxidation of inactive reduction products. Using [Cp*Rh(bpy)Cl]+ as an electron mediator dramatically increases the percentage of enzymatically active electrochemically reduced NADH from 15% (direct) to 99% (mediated) with a faradaic efficiency of up to 86%. Furthermore, investigations of the catalytic mechanisms of [Cp*Rh(bpy)Cl]+ clarifies the necessary conditions for its functioning and questions the proposed reaction mechanism by two-step reduction where first the mediator is reduced and then brought in contact with NAD+.
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Affiliation(s)
- Jonas Meyer
- Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Manuela Romero
- Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Jorg Thöming
- Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Michael Baune
- Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Nicholas Reimer
- Centre for Biomolecular Interactions Bremen (CBIB), Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Ralf Dringen
- Centre for Biomolecular Interactions Bremen (CBIB), Bremen, Germany
- University of Bremen, Bremen, Germany
| | - Ingmar Bösing
- Chemical Process Engineering Group (CVT), Leobener Strasse 6, 28359, Bremen, Germany.
- University of Bremen, Bremen, Germany.
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4
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Kurimoto A, Nasseri SA, Hunt C, Rooney M, Dvorak DJ, LeSage NE, Jansonius RP, Withers SG, Berlinguette CP. Bioelectrocatalysis with a palladium membrane reactor. Nat Commun 2023; 14:1814. [PMID: 37002213 PMCID: PMC10066381 DOI: 10.1038/s41467-023-37257-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 03/09/2023] [Indexed: 04/03/2023] Open
Abstract
Enzyme catalysis is used to generate approximately 50,000 tons of value-added chemical products per year. Nearly a quarter of this production requires a stoichiometric cofactor such as NAD+/NADH. Given that NADH is expensive, it would be beneficial to regenerate it in a way that does not interfere with the enzymatic reaction. Water electrolysis could provide the proton and electron equivalent necessary to electrocatalytically convert NAD+ to NADH. However, this form of electrocatalytic NADH regeneration is challenged by the formation of inactive NAD2 dimers, the use of high overpotentials or mediators, and the long-term electrochemical instability of the enzyme during electrolysis. Here, we show a means of overcoming these challenges by using a bioelectrocatalytic palladium membrane reactor for electrochemical NADH regeneration from NAD+. This achievement is possible because the membrane reactor regenerates NADH through reaction of hydride with NAD+ in a compartment separated from the electrolysis compartment by a hydrogen-permselective Pd membrane. This separation of the enzymatic and electrolytic processes bypasses radical-induced NAD+ degradation and enables the operator to optimize conditions for the enzymatic reaction independent of the water electrolysis. This architecture, which mechanistic studies reveal utilizes hydride sourced from water, provides an opportunity for enzyme catalysis to be driven by clean electricity where the major waste product is oxygen gas.
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Affiliation(s)
- Aiko Kurimoto
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Seyed A Nasseri
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Camden Hunt
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
- Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Mike Rooney
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - David J Dvorak
- Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Natalie E LeSage
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Ryan P Jansonius
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Stephen G Withers
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Curtis P Berlinguette
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada.
- Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, BC, V6T 1Z4, Canada.
- Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6Y 1Z3, Canada.
- Canadian Institute for Advanced Research (CIFAR), 661 University Avenue, Toronto, M5G 1M1, ON, Canada.
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5
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Sharma VK, Hutchison JM, Allgeier AM. Redox Biocatalysis: Quantitative Comparisons of Nicotinamide Cofactor Regeneration Methods. CHEMSUSCHEM 2022; 15:e202200888. [PMID: 36129761 PMCID: PMC10029092 DOI: 10.1002/cssc.202200888] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Enzymatic processes, particularly those capable of performing redox reactions, have recently been of growing research interest. Substrate specificity, optimal activity at mild temperatures, high selectivity, and yield are among the desirable characteristics of these oxidoreductase catalyzed reactions. Nicotinamide adenine dinucleotide (phosphate) or NAD(P)H-dependent oxidoreductases have been extensively studied for their potential applications like biosynthesis of chiral organic compounds, construction of biosensors, and pollutant degradation. One of the main challenges associated with making these processes commercially viable is the regeneration of the expensive cofactors required by the enzymes. Numerous efforts have pursued enzymatic regeneration of NAD(P)H by coupling a substrate reduction with a complementary enzyme catalyzed oxidation of a co-substrate. While offering excellent selectivity and high total turnover numbers, such processes involve complicated downstream product separation of a primary product from the coproducts and impurities. Alternative methods comprising chemical, electrochemical, and photochemical regeneration have been developed with the goal of enhanced efficiency and operational simplicity compared to enzymatic regeneration. Despite the goal, however, the literature rarely offers a meaningful comparison of the total turnover numbers for various regeneration methodologies. This comprehensive Review systematically discusses various methods of NAD(P)H cofactor regeneration and quantitatively compares performance across the numerous methods. Further, fundamental barriers to enhanced cofactor regeneration in the various methods are identified, and future opportunities are highlighted for improving the efficiency and sustainability of commercially viable oxidoreductase processes for practical implementation.
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Affiliation(s)
- Victor K Sharma
- Chemical and Petroleum Engineering, The University of Kansas, 1530 W 15th St, 66045, Lawrence, Kansas, United States
| | - Justin M Hutchison
- Civil, Environmental and Architectural Engineering, The University of Kansas, 1530 W 15th St, 66045, Lawrence, Kansas, United States
| | - Alan M Allgeier
- Chemical and Petroleum Engineering, The University of Kansas, 1530 W 15th St, 66045, Lawrence, Kansas, United States
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6
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Influence of electrode potential, pH and NAD + concentration on the electrochemical NADH regeneration. Sci Rep 2022; 12:16380. [PMID: 36180530 PMCID: PMC9525651 DOI: 10.1038/s41598-022-20508-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/14/2022] [Indexed: 11/09/2022] Open
Abstract
Electrochemical NAD+ reduction is a promising method to regenerate NADH for enzymatic reactions. Many different electrocatalysts have been tested in the search for high yields of the 1,4-isomer of NADH, the active NADH, but aside from electrode material, other system parameters such as pH, electrode potential and educt concentration also play a role in NADH regeneration. The effect of these last three parameters and the mechanisms behind their influence on NADH regeneration was systematically studied and presented in this paper. With percentages of active NADH ranging from 10 to 70% and faradaic efficiencies between 1 and 30%, it is clear that all three system parameters drastically affect the reaction outcome. As a proof of principle, the NAD+ reduction in the presence of pyruvate and lactate dehydrogenase was performed. It could be shown that the electrochemical NADH regeneration can also be done successfully in parallel to enzymatically usage of the regenerated cofactor.
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7
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Mo3+ hydride as the common origin of H2 evolution and selective NADH regeneration in molybdenum sulfide electrocatalysts. Nat Catal 2022. [DOI: 10.1038/s41929-022-00781-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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8
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Khan ZA, Hong PJS, Lee CH, Hong Y. Recent Advances in Electrochemical and Optical Sensors for Detecting Tryptophan and Melatonin. Int J Nanomedicine 2021; 16:6861-6888. [PMID: 34675512 PMCID: PMC8521600 DOI: 10.2147/ijn.s325099] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022] Open
Abstract
Tryptophan and melatonin are pleiotropic molecules, each capable of influencing several cellular, biochemical, and physiological responses. Therefore, sensitive detection of tryptophan and melatonin in pharmaceutical and human samples is crucial for human well-being. Mass spectrometry, high-performance liquid chromatography, and capillary electrophoresis are common methods for both tryptophan and melatonin analysis; however, these methods require copious amounts of time, money, and manpower. Novel electrochemical and optical detection tools have been subjects of intensive research due to their ability to offer a better signal-to-noise ratio, high specificity, ultra-sensitivity, and wide dynamic range. Recently, researchers have designed sensitive and selective electrochemical and optical platforms by using new surface modifications, microfabrication techniques, and the decoration of diverse nanomaterials with unique properties for the detection of tryptophan and melatonin. However, there is a scarcity of review articles addressing the recent developments in the electrochemical and optical detection of tryptophan and melatonin. Here, we provide a critical and objective review of high-sensitivity tryptophan and melatonin sensors that have been developed over the past six years (2015 onwards). We review the principles, performance, and limitations of these sensors. We also address critical aspects of sensitivity and selectivity, limit and range of detection, fabrication process and time, durability, and biocompatibility. Finally, we discuss challenges related to tryptophan and melatonin detection and present future outlooks.
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Affiliation(s)
- Zeeshan Ahmad Khan
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Ubiquitous Healthcare & Anti-Aging Research Center (u-HARC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
| | - Paul Jung-Soo Hong
- Department of Chemistry, Newton South High School, Newton, MA, 02459, USA
| | - Christina Hayoung Lee
- Department of Biology, College of Arts and Sciences, Vanderbilt University, Nashville, TN, 37212, USA
| | - Yonggeun Hong
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Ubiquitous Healthcare & Anti-Aging Research Center (u-HARC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Department of Rehabilitation Science, Graduate School of Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Department of Medicine, Division of Hematology/Oncology, Harvard Medical School-Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
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9
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Guo S, Asset T, Atanassov P. Catalytic Hybrid Electrocatalytic/Biocatalytic Cascades for Carbon Dioxide Reduction and Valorization. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04862] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shengyuan Guo
- Department of Chemical and Biomolecular Engineering, National Fuel Cell Research Center, University of California Irvine, Irvine, California 92697, United States
| | - Tristan Asset
- Department of Chemical and Biomolecular Engineering, National Fuel Cell Research Center, University of California Irvine, Irvine, California 92697, United States
| | - Plamen Atanassov
- Department of Chemical and Biomolecular Engineering, National Fuel Cell Research Center, University of California Irvine, Irvine, California 92697, United States
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10
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Ottone C, Pugliese D, Laurenti M, Hernández S, Cauda V, Grez P, Wilson L. ZnO Materials as Effective Anodes for the Photoelectrochemical Regeneration of Enzymatically Active NAD . ACS APPLIED MATERIALS & INTERFACES 2021; 13:10719-10727. [PMID: 33645209 DOI: 10.1021/acsami.0c20630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work reports the study of ZnO-based anodes for the photoelectrochemical regeneration of the oxidized form of nicotinamide adenine dinucleotide (NAD+). The latter is the most important coenzyme for dehydrogenases. However, the high costs of NAD+ limit the use of such enzymes at the industrial level. The influence of the ZnO morphologies (flower-like, porous film, and nanowires), showing different surface area and crystallinity, was studied. The detection of diluted solutions (0.1 mM) of the reduced form of the coenzyme (NADH) was accomplished by the flower-like and the porous films, whereas concentrations greater than 20 mM were needed for the detection of NADH with nanowire-shaped ZnO-based electrodes. The photocatalytic activity of ZnO was reduced at increasing concentrations of NAD+ because part of the ultraviolet irradiation was absorbed by the coenzyme, reducing the photons available for the ZnO material. The higher electrochemical surface area of the flower-like film makes it suitable for the regeneration reaction. The illumination of the electrodes led to a significant increase on the NAD+ regeneration with respect to both the electrochemical oxidation in dark and the only photochemical reaction. The tests with formate dehydrogenase demonstrated that 94% of the regenerated NAD+ was enzymatically active.
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Affiliation(s)
- Carminna Ottone
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, 2340000 Valparaiso, Chile
| | - Diego Pugliese
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Marco Laurenti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Simelys Hernández
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Paula Grez
- Instituto de Química, Pontificia Universidad Católica de Valparaíso, Av. Universidad 330, Curauma, 2340000 Valparaiso, Chile
| | - Lorena Wilson
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, 2340000 Valparaiso, Chile
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Immanuel S, Sivasubramanian R, Gul R, Dar MA. Recent Progress and Perspectives on Electrochemical Regeneration of Reduced Nicotinamide Adenine Dinucleotide (NADH). Chem Asian J 2020; 15:4256-4270. [PMID: 33164351 DOI: 10.1002/asia.202001035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/31/2020] [Indexed: 12/14/2022]
Abstract
NAD is a cofactor that maintains cellular redox homeostasis and has immense industrial and biological significance. It acts as an enzymatic mediator in several biocatalytic electrochemical reactions and undergoes oxidation/reduction to form NAD+ or NADH, respectively. The NAD redox couple (NAD+ /NADH) mostly exists in enzyme-assisted metabolic reactions as a coenzyme during which electrons and protons are transferred. NADH shuttles these charges between the enzyme and the substrate. In order to understand such complex metabolic reactions, it is vital to study the bio-electrochemistry of NADH. In addition, the regeneration of NADH in industries has attracted significant attention due to its vast usage and high cost. To make biocatalysis economically viable, primary methods of NADH regeneration including enzymatic, chemical, photochemical and electrochemical methods are widely used. This review is mainly focused on the electrochemical reduction of NAD+ to NADH with specific details on the mechanism and kinetics of the reaction. It provides emphasis on the different routes (direct and mediated) to electrochemically regenerate NADH from NAD+ highlighting the NAD dimer formation. Also, it describes the electrocatalysts developed until now and the scope for development in this area of research.
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Affiliation(s)
- Susan Immanuel
- Electrochemical sensors and energy materials laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, 641004, India
| | - R Sivasubramanian
- Electrochemical sensors and energy materials laboratory, PSG Institute of Advanced Studies, Peelamedu, Coimbatore, 641004, India
| | - Rukhsana Gul
- Obesity Research Center, College of Medicine, King Saud University, P.O. Box 2925 (98), Riyadh, 11461, Saudi Arabia
| | - Mushtaq Ahmad Dar
- Center of Excellence for Research in Engineering Materials (CEREM), College of Engineering, King Saudi University, Riyadh, 11421, Saudi Arabia
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12
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Morrison CS, Paskaleva EE, Rios MA, Beusse TR, Blair EM, Lin LQ, Hu JR, Gorby AH, Dodds DR, Armiger WB, Dordick JS, Koffas MAG. Improved soluble expression and use of recombinant human renalase. PLoS One 2020; 15:e0242109. [PMID: 33180865 PMCID: PMC7660482 DOI: 10.1371/journal.pone.0242109] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/26/2020] [Indexed: 12/04/2022] Open
Abstract
Electrochemical bioreactor systems have enjoyed significant attention in the past few decades, particularly because of their applications to biobatteries, artificial photosynthetic systems, and microbial electrosynthesis. A key opportunity with electrochemical bioreactors is the ability to employ cofactor regeneration strategies critical in oxidative and reductive enzymatic and cell-based biotransformations. Electrochemical cofactor regeneration presents several advantages over other current cofactor regeneration systems, such as chemoenzymatic multi-enzyme reactions, because there is no need for a sacrificial substrate and a recycling enzyme. Additionally, process monitoring is simpler and downstream processing is less costly. However, the direct electrochemical reduction of NAD(P)+ on a cathode may produce adventitious side products, including isomers of NAD(P)H that can act as potent competitive inhibitors to NAD(P)H-requiring enzymes such as dehydrogenases. To overcome this limitation, we examined how nature addresses the adventitious formation of isomers of NAD(P)H. Specifically, renalases are enzymes that catalyze the oxidation of 1,2- and 1,6-NAD(P)H to NAD(P)+, yielding an effective recycling of unproductive NAD(P)H isomers. We designed several mutants of recombinant human renalase isoform 1 (rhRen1), expressed them in E. coli BL21(DE3) to enhance protein solubility, and evaluated the activity profiles of the renalase variants against NAD(P)H isomers. The potential for rhRen1 to be employed in engineering applications was then assessed in view of the enzyme’s stability upon immobilization. Finally, comparative modeling was performed to assess the underlying reasons for the enhanced solubility and activity of the mutant enzymes.
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Affiliation(s)
- Clifford S. Morrison
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Elena E. Paskaleva
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Marvin A. Rios
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Thomas R. Beusse
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Elaina M. Blair
- Department of Chemical Engineering, Brigham Young University, Provo, Utah, United States of America
| | - Lucy Q. Lin
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - James R. Hu
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - Aidan H. Gorby
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
| | - David R. Dodds
- BiochemInsights, Malvern, Pennsylvania, United States of America
| | | | - Jonathan S. Dordick
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- * E-mail: (JSD); (MAGK)
| | - Mattheos A. G. Koffas
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York, United States of America
- * E-mail: (JSD); (MAGK)
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Electrocatalytic CO2 fixation by regenerating reduced cofactor NADH during Calvin Cycle using glassy carbon electrode. PLoS One 2020; 15:e0239340. [PMID: 32941542 PMCID: PMC7497995 DOI: 10.1371/journal.pone.0239340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 09/03/2020] [Indexed: 11/19/2022] Open
Abstract
In this study, an enzymatic pathway has been developed to replicate the Calvin Cycle by creating the individual steps of the carbon cycle in a bioreactor. The technology known as “artificial photosynthesis” converts CO2 emissions into a variety of intermediates that serve as precursors to high-value products. CO2, light, water, and electricity were used as feedstock. An electrochemical reactor was also studied for the regeneration of active NADH operating at constant electrode potential. Initially, a batch electrochemical reactor containing 80 mL of 0.2 mM NAD+ in Tris-buffer (pH 7.40) was used to evaluate the electrode material operating at normal temperature and pressure. The results showed that the cathode is highly electrocatalytically efficient and selective to regenerate 97.45±0.8% of NADH from NAD+ at electrode potential of -2.3 V vs. mercury standard electrode (MSE). The NADH regeneration system was then integrated with ATP regeneration system and bioreactor containing Ribulose bisphosphate carboxylase/oxygenase (RuBisCO). NADH was regenerated successfully during the process electrochemically and then was used by the enzymatic reaction to produce triose phosphate and 3-Phosphoglycerate (3GPA).
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14
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Zhang B, Xu S, He D, Chen R, He Y, Fa W, Li G, Wang D. Photoelectrochemical NADH regeneration is highly sensitive to the nature of electrode surface. J Chem Phys 2020; 153:064703. [DOI: 10.1063/5.0016459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Bingqing Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Shaochen Xu
- Department of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, USA
| | - Da He
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Rong Chen
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Yumin He
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Wenjun Fa
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
| | - Gonghu Li
- Department of Chemistry, University of New Hampshire, Durham, New Hampshire 03824, USA
| | - Dunwei Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, USA
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15
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Anithaa AC, Asokan K, Lavanya N, Sekar C. Nicotinamide adenine dinucleotide immobilized tungsten trioxide nanoparticles for simultaneous sensing of norepinephrine, melatonin and nicotine. Biosens Bioelectron 2019; 143:111598. [PMID: 31442753 DOI: 10.1016/j.bios.2019.111598] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/10/2019] [Accepted: 08/13/2019] [Indexed: 01/25/2023]
Abstract
Herein, we report the anionic surfactant, ethylene diamine tetraacetic acid (EDTA), mediated synthesis of WO3 nanoparticles and its subsequent modification through gamma irradiation (GI) and electrochemical immobilization with nicotinamide adenine dinucleotide (NAD). Glassy carbon electrode (GCE) modified with GI-WO3 NPs and the enzyme NAD exhibited strong electro-oxidation of three important biomolecules such as norepinephrine (NEP), melatonin (MEL) and nicotine (NIC) in 0.1 M phosphate buffer saline (PBS) at physiological pH of 7. Square wave voltammetry (SWV) studies exhibited three well-defined peaks at potentials of 120, 570 and 840 mV, corresponding to the oxidation of NEP, MEL and NIC respectively, indicating that simultaneous determination of these compounds is feasible at the NAD/GI EDTA-WO3/GCE. The proposed sensor displayed a wide linear range of 0.010-1000 μM with the lowest detection limit of 1.4 nM for NEP, 2.6 nM for MEL and 1.7 nM for NIC respectively. Furthermore, the modified electrode was successfully applied to detect NEP, MEL and NIC in pharmaceutical and cigarette samples with excellent selectivity and reproducibility.
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Affiliation(s)
- A C Anithaa
- Dept. of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630003, TN, India
| | - K Asokan
- Materials Science Division, Inter-University Accelerator Centre, New Delhi, 110067, India
| | - N Lavanya
- Dept. of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630003, TN, India
| | - C Sekar
- Dept. of Bioelectronics and Biosensors, Alagappa University, Karaikudi, 630003, TN, India.
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Morrison C, Heitmann E, Armiger W, Dodds D, Koffas M. Electrochemical Bioreactor Technology for Biocatalysis and Microbial Electrosynthesis. ADVANCES IN APPLIED MICROBIOLOGY 2018; 105:51-86. [PMID: 30342723 DOI: 10.1016/bs.aambs.2018.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Two seemingly distinct fields, industrial biocatalysis and microbial electrosynthesis, can be viewed together through the lens of electrochemical bioreactor technology in order to highlight the challenges that exist in creating a versatile platform technology for use in chemical and biological applications. Industrial biocatalysis applications requiring NAD(P)H to perform redox transformations often necessitate convoluted coupled-enzyme regeneration systems to regenerate reduced cofactor, NAD(P)H from oxidized cofactor, NAD(P). Renewed interest in continuously recycling the cofactor via electrochemical reduction is motivated by the low cost of performing electrochemical reactions, easy monitoring of the reaction progress, and straightforward product recovery. However, electrochemical cofactor regeneration methods invariably produce adventitious reduced cofactor side products which result in unproductive loss of input NAD(P). Microbial electrosynthesis is a form of microbially driven catalysis in which electricity is supplied to living microorganisms for the production of industrially relevant chemical products at higher carbon efficiencies and yields compared with traditional, nonelectrically driven, fermentations. The fundamental biochemistry of these organisms as related to selected biochemical redox processes will be explored in order to highlight opportunities to devise strategies for taking advantage of these biochemical processes in engineered systems.
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Affiliation(s)
- Clifford Morrison
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
| | - Elizabeth Heitmann
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
| | | | - David Dodds
- BioChemInsights, Inc., Malvern, PA, United States
| | - Mattheos Koffas
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States; Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, United States
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17
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Giesbrecht PK, Nemez DB, Herbert DE. Electrochemical hydrogenation of a benzannulated pyridine to a dihydropyridine in acidic solution. Chem Commun (Camb) 2018; 54:338-341. [DOI: 10.1039/c7cc07907a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemistry is used to demonstrate the selective hydrogenation of a benzannulated pyridine to a biomimetic dihydropyridine using sustainable Brønsted acids.
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Affiliation(s)
- Patrick K. Giesbrecht
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba
- Winnipeg
- Canada
| | - Dion B. Nemez
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba
- Winnipeg
- Canada
| | - David E. Herbert
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba
- Winnipeg
- Canada
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18
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Improved strategies for electrochemical 1,4-NAD(P)H 2 regeneration: A new era of bioreactors for industrial biocatalysis. Biotechnol Adv 2017; 36:120-131. [PMID: 29030132 DOI: 10.1016/j.biotechadv.2017.10.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/02/2017] [Accepted: 10/06/2017] [Indexed: 11/23/2022]
Abstract
Industrial enzymatic reactions requiring 1,4-NAD(P)H2 to perform redox transformations often require convoluted coupled enzyme regeneration systems to regenerate 1,4-NAD(P)H2 from NAD(P) and recycle the cofactor for as many turnovers as possible. Renewed interest in recycling the cofactor via electrochemical means is motivated by the low cost of performing electrochemical reactions, easy monitoring of the reaction progress, and straightforward product recovery. However, electrochemical cofactor regeneration methods invariably produce adventitious reduced cofactor side products which result in unproductive loss of input NAD(P). We review various literature strategies for mitigating adventitious product formation by electrochemical cofactor regeneration systems, and offer insight as to how a successful electrochemical bioreactor system could be constructed to engineer efficient 1,4-NAD(P)H2-dependent enzyme reactions of interest to the industrial biocatalysis community.
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19
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Direct electrochemical regeneration of 1,4-NADH at the copper foam and bimetallic copper foam. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.07.096] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Ali I, Ullah N, McArthur MA, Coulombe S, Omanovic S. Direct electrochemical regeneration of enzymatic cofactor 1,4-NADH on a cathode composed of multi-walled carbon nanotubes decorated with nickel nanoparticles. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22886] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Irshad Ali
- Department of Chemical Engineering; McGill University 3610 University, Street; Montréal QC, H3A 0C5 Canada
| | - Nehar Ullah
- Department of Chemical Engineering; McGill University 3610 University, Street; Montréal QC, H3A 0C5 Canada
| | - Mark A. McArthur
- Department of Chemical Engineering; McGill University 3610 University, Street; Montréal QC, H3A 0C5 Canada
| | - Sylvain Coulombe
- Department of Chemical Engineering; McGill University 3610 University, Street; Montréal QC, H3A 0C5 Canada
| | - Sasha Omanovic
- Department of Chemical Engineering; McGill University 3610 University, Street; Montréal QC, H3A 0C5 Canada
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22
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Stufano P, Paris AR, Bocarsly A. Photoelectrochemical NADH Regeneration using Pt‐Modified
p
‐GaAs Semiconductor Electrodes. ChemElectroChem 2017. [DOI: 10.1002/celc.201600488] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Paolo Stufano
- Department of Chemistry Princeton University Frick Laboratory Princeton NJ 08544 USA
| | - Aubrey R. Paris
- Department of Chemistry Princeton University Frick Laboratory Princeton NJ 08544 USA
| | - Andrew Bocarsly
- Department of Chemistry Princeton University Frick Laboratory Princeton NJ 08544 USA
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23
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Vidakovic-Koch T. Electron Transfer Between Enzymes and Electrodes. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2017; 167:39-85. [PMID: 29224083 DOI: 10.1007/10_2017_42] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Efficient electron transfer between redox enzymes and electrocatalytic surfaces plays a significant role in development of novel energy conversion devices as well as novel reactors for production of commodities and fine chemicals. Major application examples are related to enzymatic fuel cells and electroenzymatic reactors, as well as enzymatic biosensors. The two former applications are still at the level of proof-of-concept, partly due to the low efficiency and obstacles to electron transfer between enzymes and electrodes. This chapter discusses the theoretical backgrounds of enzyme/electrode interactions, including the main mechanisms of electron transfer, as well as thermodynamic and kinetic aspects. Additionally, the main electrochemical methods of study are described for selected examples. Finally, some recent advancements in the preparation of enzyme-modified electrodes as well as electrodes for soluble co-factor regeneration are reviewed. Graphical Abstract.
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Affiliation(s)
- Tanja Vidakovic-Koch
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany.
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24
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Kim SH, Chung GY, Kim SH, Vinothkumar G, Yoon SH, Jung KD. Electrochemical NADH regeneration and electroenzymatic CO2 reduction on Cu nanorods/glassy carbon electrode prepared by cyclic deposition. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Gouranlou F, Ghourchian H. Ethanol/O2 biofuel cell using a biocathode consisting of laccase/ HOOC-MWCNTs/polydiallyldimethylammonium chloride. Enzyme Microb Technol 2016; 86:127-33. [DOI: 10.1016/j.enzmictec.2015.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/06/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
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26
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Balamurugan J, Thanh TD, Kim NH, Lee JH. Facile fabrication of FeN nanoparticles/nitrogen-doped graphene core-shell hybrid and its use as a platform for NADH detection in human blood serum. Biosens Bioelectron 2016; 83:68-76. [PMID: 27104586 DOI: 10.1016/j.bios.2016.04.040] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/23/2016] [Accepted: 04/14/2016] [Indexed: 11/29/2022]
Abstract
Herein, we present a novel strategy for the synthesis of an iron nitride nanoparticles-encapsulated nitrogen-doped graphene (FeN NPs/NG) core-shell hierarchical nanostructure to boost the electrochemical performance in a highly sensitive, selective, reproducible, and stable sensing platform for nicotinamide adenine dinucleotide (NADH). This core-shell hierarchical nanostructure provides an excellent conductive network for effective charge transfer and avoids the agglomeration and restacking of NG sheets, which provides better access to the electrode material for NADH oxidation. The FeN NPs/NG core-shell hierarchical nanostructure demonstrates direct and mediatorless responses to NADH oxidation at a low potential. This material displays a high sensitivity of 0.028μA/μMcm(2), a wide linear range from 0.4 to 718μM, and a detection limit of 25nM with a fast response time of less than 3s. The interferences from common interferents, such as glucose, uric acid, dopamine, and ascorbic acid, are negligible. The fabricated sensor was further tested for the determination of NADH in human blood serum. The resulting high sensitivity, excellent selectivity, outstanding stability, and good reproducibility make the proposed FeN NPs/NG core-shell hierarchical nanostructure as a promising candidate for biomedical applications.
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Affiliation(s)
- Jayaraman Balamurugan
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global) & Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea
| | - Tran Duy Thanh
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global) & Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea
| | - Nam Hoon Kim
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global) & Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea
| | - Joong Hee Lee
- Advanced Materials Institute of BIN Convergence Technology (BK21 Plus Global) & Department of BIN Convergence Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea; Carbon Composite Research Centre, Department of Polymer - Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea.
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27
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Electrocatalytic behavior of glassy carbon electrode modified with ruthenium nanoparticles and ruthenium film. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-0937-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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28
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Cazelles R, Liu J, Antonietti M. Hybrid C3N4/Fluorine-Doped Tin Oxide Electrode Transfers Hydride for 1,4-NADH Cofactor Regeneration. ChemElectroChem 2014. [DOI: 10.1002/celc.201402421] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Expression of the NAD-dependent FDH1 β-subunit from Methylobacterium extorquens AM1 in Escherichia coli and its characterization. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-014-0126-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Direct electrochemical regeneration of the cofactor NADH on bare Ti, Ni, Co and Cd electrodes: The influence of electrode potential and electrode material. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.02.029] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Ali I, Omanovic S. Thermodynamics and kinetics of NAD+ adsorption on a glassy carbon electrode. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2331-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Aquino Neto S, Almeida TS, Meredith MT, Minteer SD, De Andrade AR. Employing Methylene Green Coated Carbon Nanotube Electrodes to Enhance NADH Electrocatalysis for Use in an Ethanol Biofuel Cell. ELECTROANAL 2013. [DOI: 10.1002/elan.201300282] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Tam TK, Chen B, Lei C, Liu J. In situ regeneration of NADH via lipoamide dehydrogenase-catalyzed electron transfer reaction evidenced by spectroelectrochemistry. Bioelectrochemistry 2012; 86:92-6. [PMID: 22497727 DOI: 10.1016/j.bioelechem.2012.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/12/2012] [Accepted: 03/17/2012] [Indexed: 11/25/2022]
Abstract
NAD/NADH is a coenzyme found in all living cells, carrying electrons from one reaction to another. We report on characterizations of in situ regeneration of NADH via lipoamide dehydrogenase (LD)-catalyzed electron transfer reaction to regenerate NADH using UV-vis spectroelectrochemistry. The Michaelis-Menten constant (K(m)) and maximum velocity (V(max)) of NADH regeneration were measured as 0.80±0.15 mM and 1.91±0.09 μM s(-1) in a 1-mm thin-layer spectroelectrochemical cell using gold gauze as the working electrode at the applied potential -0.75 V (vs. Ag/AgCl). The electrocatalytic reduction of the NAD system was further coupled with the enzymatic conversion of pyruvate to lactate by lactate dehydrogenase to examine the coenzymatic activity of the regenerated NADH. Although the reproducible electrocatalytic reduction of NAD into NADH is known to be difficult compared to the electrocatalytic oxidation of NADH, our spectroelectrochemical results indicate that the in situ regeneration of NADH via LD-catalyzed electron transfer reaction is fast and sustainable and can be potentially applied to many NAD/NADH-dependent enzyme systems.
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Affiliation(s)
- Tsz Kin Tam
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
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