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Liang J, Tang M, Chen L, Wang W, Liang X. Oxidative stress resistance prompts pyrroloquinoline quinone biosynthesis in Hyphomicrobium denitrificans H4-45. Appl Microbiol Biotechnol 2024; 108:204. [PMID: 38349428 PMCID: PMC10864529 DOI: 10.1007/s00253-024-13053-1] [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: 12/22/2023] [Revised: 01/26/2024] [Accepted: 02/03/2024] [Indexed: 02/15/2024]
Abstract
Pyrroloquinoline quinone (PQQ) is a natural antioxidant with diverse applications in food and pharmaceutical industries. A lot of effort has been devoted toward the discovery of PQQ high-producing microbial species and characterization of biosynthesis, but it is still challenging to achieve a high PQQ yield. In this study, a combined strategy of random mutagenesis and adaptive laboratory evolution (ALE) with fermentation optimization was applied to improve PQQ production in Hyphomicrobium denitrificans H4-45. A mutant strain AE-9 was obtained after nearly 400 generations of UV-LiCl mutagenesis, followed by an ALE process, which was conducted with a consecutive increase of oxidative stress generated by kanamycin, sodium sulfide, and potassium tellurite. In the flask culture condition, the PQQ production in mutant strain AE-9 had an 80.4% increase, and the cell density increased by 14.9% when compared with that of the initial strain H4-45. Moreover, batch and fed-batch fermentation processes were optimized to further improve PQQ production by pH control strategy, methanol and H2O2 feed flow, and segmented fermentation process. Finally, the highest PQQ production and productivity of the mutant strain AE-9 reached 307 mg/L and 4.26 mg/L/h in a 3.7-L bioreactor, respectively. Whole genome sequencing analysis showed that genetic mutations in the ftfL gene and thiC gene might contribute to improving PQQ production by enhancing methanol consumption and cell growth in the AE-9 strain. Our study provided a systematic strategy to obtain a PQQ high-producing mutant strain and achieve high production of PQQ in fermentation. These practical methods could be applicable to improve the production of other antioxidant compounds with uncleared regulation mechanisms. KEY POINTS: • Improvement of PQQ production by UV-LiCl mutagenesis combined with adaptive laboratory evolution (ALE) and fermentation optimization. • A consecutive increase of oxidative stress could be used as the antagonistic factor for ALE to enhance PQQ production. • Mutations in the ftfL gene and thiC gene indicated that PQQ production might be increased by enhancing methanol consumption and cell growth.
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Affiliation(s)
- Jiale Liang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Mingjie Tang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Lang Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Wenjie Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China.
| | - Xinle Liang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China.
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2
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Development of a Versatile Method to Construct Direct Electron Transfer-Type Enzyme Complexes Employing SpyCatcher/SpyTag System. Int J Mol Sci 2023; 24:ijms24031837. [PMID: 36768169 PMCID: PMC9915066 DOI: 10.3390/ijms24031837] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
The electrochemical enzyme sensors based on direct electron transfer (DET)-type oxidoreductase-based enzymes are ideal for continuous and in vivo monitoring. However, the number and types of DET-type oxidoreductases are limited. The aim of this research is the development of a versatile method to create a DET-type oxidoreductase complex based on the SpyCatcher/SpyTag technique by preparing SpyCatcher-fused heme c and SpyTag-fused non-DET-type oxidoreductases, and by the in vitro formation of DET-type oxidoreductase complexes. A heme c containing an electron transfer protein derived from Rhizobium radiobacter (CYTc) was selected to prepare SpyCatcher-fused heme c. Three non-DET-type oxidoreductases were selected as candidates for the SpyTag-fused enzyme: fungi-derived flavin adenine dinucleotide (FAD)-dependent glucose dehydrogenase (GDH), an engineered FAD-dependent d-amino acid oxidase (DAAOx), and an engineered FMN-dependent l-lactate oxidase (LOx). CYTc-SpyCatcher (CYTc-SC) and SpyTag-Enzymes (ST-GDH, ST-DAAOx, ST-LOx) were prepared as soluble molecules while maintaining their redox properties and catalytic activities, respectively. CYTc-SC/ST-Enzyme complexes were formed by mixing CYTc-SpyCatcher and SpyTag-Enzymes, and the complexes retained their original enzymatic activity. Remarkably, the heme domain served as an electron acceptor from complexed enzymes by intramolecular electron transfer; consequently, all constructed CYTc-SC/ST-Enzyme complexes showed DET ability to the electrode, demonstrating the versatility of this method.
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3
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Okuda-Shimazaki J, Yoshida H, Lee I, Kojima K, Suzuki N, Tsugawa W, Yamada M, Inaka K, Tanaka H, Sode K. Microgravity environment grown crystal structure information based engineering of direct electron transfer type glucose dehydrogenase. Commun Biol 2022; 5:1334. [PMID: 36473944 PMCID: PMC9727119 DOI: 10.1038/s42003-022-04286-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
The heterotrimeric flavin adenine dinucleotide dependent glucose dehydrogenase is a promising enzyme for direct electron transfer (DET) principle-based glucose sensors within continuous glucose monitoring systems. We elucidate the structure of the subunit interface of this enzyme by preparing heterotrimer complex protein crystals grown under a space microgravity environment. Based on the proposed structure, we introduce inter-subunit disulfide bonds between the small and electron transfer subunits (5 pairs), as well as the catalytic and the electron transfer subunits (9 pairs). Without compromising the enzyme's catalytic efficiency, a mutant enzyme harboring Pro205Cys in the catalytic subunit, Asp383Cys and Tyr349Cys in the electron transfer subunit, and Lys155Cys in the small subunit, is determined to be the most stable of the variants. The developed engineered enzyme demonstrate a higher catalytic activity and DET ability than the wild type. This mutant retains its full activity below 70 °C as well as after incubation at 75 °C for 15 min - much higher temperatures than the current gold standard enzyme, glucose oxidase, is capable of withstanding.
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Affiliation(s)
- Junko Okuda-Shimazaki
- grid.10698.360000000122483208Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC27599 USA
| | - Hiromi Yoshida
- grid.258331.e0000 0000 8662 309XDepartment of Basic Life Science, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0793 Japan
| | - Inyoung Lee
- grid.10698.360000000122483208Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC27599 USA
| | - Katsuhiro Kojima
- grid.136594.c0000 0001 0689 5974Graduate School of Engineering, Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 Japan
| | - Nanoha Suzuki
- grid.136594.c0000 0001 0689 5974Graduate School of Engineering, Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 Japan
| | - Wakako Tsugawa
- grid.136594.c0000 0001 0689 5974Graduate School of Engineering, Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588 Japan
| | - Mitsugu Yamada
- grid.62167.340000 0001 2220 7916JEM Utilization Center Human Spaceflight Technology Directorate, Japan Aerospace Exploration Agency (JAXA), 2-1-1 Sengen, Tsukuba-shi, Ibaraki 305-8505 Japan
| | - Koji Inaka
- grid.459744.fMaruwa Foods and Biosciences, 170-1 Tsutsui-cho, Yamato Koriyama-shi, Nara 639-1123 Japan
| | - Hiroaki Tanaka
- grid.459486.2Confocal Science Inc., Musashino Bldg, 5-14-15 Fukasawa, Setagaya-ku, Tokyo 158-0081 Japan
| | - Koji Sode
- grid.10698.360000000122483208Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC27599 USA
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4
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Schachinger F, Chang H, Scheiblbrandner S, Ludwig R. Amperometric Biosensors Based on Direct Electron Transfer Enzymes. Molecules 2021; 26:molecules26154525. [PMID: 34361678 PMCID: PMC8348568 DOI: 10.3390/molecules26154525] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 11/16/2022] Open
Abstract
The accurate determination of analyte concentrations with selective, fast, and robust methods is the key for process control, product analysis, environmental compliance, and medical applications. Enzyme-based biosensors meet these requirements to a high degree and can be operated with simple, cost efficient, and easy to use devices. This review focuses on enzymes capable of direct electron transfer (DET) to electrodes and also the electrode materials which can enable or enhance the DET type bioelectrocatalysis. It presents amperometric biosensors for the quantification of important medical, technical, and environmental analytes and it carves out the requirements for enzymes and electrode materials in DET-based third generation biosensors. This review critically surveys enzymes and biosensors for which DET has been reported. Single- or multi-cofactor enzymes featuring copper centers, hemes, FAD, FMN, or PQQ as prosthetic groups as well as fusion enzymes are presented. Nanomaterials, nanostructured electrodes, chemical surface modifications, and protein immobilization strategies are reviewed for their ability to support direct electrochemistry of enzymes. The combination of both biosensor elements-enzymes and electrodes-is evaluated by comparison of substrate specificity, current density, sensitivity, and the range of detection.
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5
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Abstract
Bioelectrocatalysis has become one of the most important research fields in electrochemistry and provided a firm base for the application of important technology in various bioelectrochemical devices, such as biosensors, biofuel cells, and biosupercapacitors. The understanding and technology of bioelectrocatalysis have greatly improved with the introduction of nanostructured electrode materials and protein-engineering methods over the last few decades. Recently, the electroenzymatic production of renewable energy resources and useful organic compounds (bioelectrosynthesis) has attracted worldwide attention. In this review, we summarize recent progress in the applications of enzymatic bioelectrocatalysis.
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6
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Bioelectrocatalysis based on direct electron transfer of fungal pyrroloquinoline quinone-dependent dehydrogenase lacking the cytochrome domain. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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PQQ-GDH - Structure, function and application in bioelectrochemistry. Bioelectrochemistry 2020; 134:107496. [PMID: 32247165 DOI: 10.1016/j.bioelechem.2020.107496] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 12/16/2022]
Abstract
This review summarizes the basic features of the PQQ-GDH enzyme as one of the sugar converting biocatalysts. Focus is on the membrane -bound and the soluble form. Furthermore, the main principles of enzymatic catalysis as well as studies on the physiological importance are reviewed. A short overview is given on developments in protein engineering. The major part, however, deals with the different fields of application in bioelectrochemistry. This includes approaches for enzyme-electrode communication such as direct electron transfer, mediator-based systems, redox polymers or conducting polymers and holoenzyme reconstitution, and covers applied areas such as biosensing, biofuel cells, recycling schemes, enzyme competition, light-directed sensing, switchable detection schemes, logical operations by enzyme electrodes and immune sensing.
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8
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Direct Electron Transfer-Type Bioelectrocatalysis of Redox Enzymes at Nanostructured Electrodes. Catalysts 2020. [DOI: 10.3390/catal10020236] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Direct electron transfer (DET)-type bioelectrocatalysis, which couples the electrode reactions and catalytic functions of redox enzymes without any redox mediator, is one of the most intriguing subjects that has been studied over the past few decades in the field of bioelectrochemistry. In order to realize the DET-type bioelectrocatalysis and improve the performance, nanostructures of the electrode surface have to be carefully tuned for each enzyme. In addition, enzymes can also be tuned by the protein engineering approach for the DET-type reaction. This review summarizes the recent progresses in this field of the research while considering the importance of nanostructure of electrodes as well as redox enzymes. This review also describes the basic concepts and theoretical aspects of DET-type bioelectrocatalysis, the significance of nanostructures as scaffolds for DET-type reactions, protein engineering approaches for DET-type reactions, and concepts and facts of bidirectional DET-type reactions from a cross-disciplinary viewpoint.
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9
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Xiao X, Xia HQ, Wu R, Bai L, Yan L, Magner E, Cosnier S, Lojou E, Zhu Z, Liu A. Tackling the Challenges of Enzymatic (Bio)Fuel Cells. Chem Rev 2019; 119:9509-9558. [PMID: 31243999 DOI: 10.1021/acs.chemrev.9b00115] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ever-increasing demands for clean and sustainable energy sources combined with rapid advances in biointegrated portable or implantable electronic devices have stimulated intensive research activities in enzymatic (bio)fuel cells (EFCs). The use of renewable biocatalysts, the utilization of abundant green, safe, and high energy density fuels, together with the capability of working at modest and biocompatible conditions make EFCs promising as next generation alternative power sources. However, the main challenges (low energy density, relatively low power density, poor operational stability, and limited voltage output) hinder future applications of EFCs. This review aims at exploring the underlying mechanism of EFCs and providing possible practical strategies, methodologies and insights to tackle these issues. First, this review summarizes approaches in achieving high energy densities in EFCs, particularly, employing enzyme cascades for the deep/complete oxidation of fuels. Second, strategies for increasing power densities in EFCs, including increasing enzyme activities, facilitating electron transfers, employing nanomaterials, and designing more efficient enzyme-electrode interfaces, are described. The potential of EFCs/(super)capacitor combination is discussed. Third, the review evaluates a range of strategies for improving the stability of EFCs, including the use of different enzyme immobilization approaches, tuning enzyme properties, designing protective matrixes, and using microbial surface displaying enzymes. Fourth, approaches for the improvement of the cell voltage of EFCs are highlighted. Finally, future developments and a prospective on EFCs are envisioned.
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Affiliation(s)
- Xinxin Xiao
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,Department of Chemical Sciences and Bernal Institute , University of Limerick , Limerick V94 T9PX , Ireland
| | - Hong-Qi Xia
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Ranran Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , 32 West seventh Road, Tianjin Airport Economic Area , Tianjin 300308 , China
| | - Lu Bai
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Lu Yan
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China
| | - Edmond Magner
- Department of Chemical Sciences and Bernal Institute , University of Limerick , Limerick V94 T9PX , Ireland
| | - Serge Cosnier
- Université Grenoble-Alpes , DCM UMR 5250, F-38000 Grenoble , France.,Département de Chimie Moléculaire , UMR CNRS, DCM UMR 5250, F-38000 Grenoble , France
| | - Elisabeth Lojou
- Aix Marseille Univ, CNRS, BIP, Bioénergétique et Ingénierie des Protéines UMR7281 , Institut de Microbiologie de la Méditerranée, IMM , FR 3479, 31, chemin Joseph Aiguier 13402 Marseille , Cedex 20 , France
| | - Zhiguang Zhu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences , 32 West seventh Road, Tianjin Airport Economic Area , Tianjin 300308 , China
| | - Aihua Liu
- Institute for Biosensing, and College of Life Sciences , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,College of Chemistry & Chemical Engineering , Qingdao University , 308 Ningxia Road , Qingdao 266071 , China.,School of Pharmacy, Medical College , Qingdao University , Qingdao 266021 , China
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10
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Ito Y, Okuda-Shimazaki J, Tsugawa W, Loew N, Shitanda I, Lin CE, La Belle J, Sode K. Third generation impedimetric sensor employing direct electron transfer type glucose dehydrogenase. Biosens Bioelectron 2019; 129:189-197. [PMID: 30721794 DOI: 10.1016/j.bios.2019.01.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 12/12/2018] [Accepted: 01/02/2019] [Indexed: 01/30/2023]
Abstract
Faradaic electrochemical impedance spectroscopy (faradaic EIS) is an attractive measurement principle for biosensors. However, there have been no reports on sensors employing direct electron transfer (DET)-type redox enzymes based on faradaic EIS principle. In this study, we have attempted to construct the 3rd-generation faradaic enzyme EIS sensor, which used DET-type flavin adenine dinucleotide (FAD) dependent glucose dehydrogenase (GDH) complex, to elucidate its characteristic properties as well as to investigate its potential application as the future immunosensor platform. The gold disk electrodes (GDEs) with DET-type FADGDH prepared using self-assembled monolayer (SAM) showed the glucose concentration dependent impedance change, which was confirmed by the change in the charge transfer resistance (Rct). The Δ(1/Rct) values were also affected by DC bias potential and the length of SAM. Based on the Nyquist plot and Bode plot simulations, glucose sensing by imaginary impedance monitoring under fixed frequency (5 mHz) was carried out, revealing the higher sensitivity at low glucose concentration with wider linear range (0.02-0.2 mM). Considering this high sensitivity toward glucose, the 3rd-generation faradaic enzyme EIS sensor would provide alternative platform for future impedimetric immunosensing system, which does not use redox probe.
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Affiliation(s)
- Yuka Ito
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Junko Okuda-Shimazaki
- Ultizyme International Ltd., 1-13-16, Minami, Meguro, Tokyo 152-0013, Japan; Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 and North Carolina State University, Raleigh, NC 27695, USA
| | - Wakako Tsugawa
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Noya Loew
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 and North Carolina State University, Raleigh, NC 27695, USA
| | - Isao Shitanda
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Chi-En Lin
- School of Biological and Health System Engineering, Ira A. Fulton Schools of Engineering, Arizona State University, P.O.Box 879709, Tempe, AZ 85287-9719, USA
| | - Jeffrey La Belle
- School of Biological and Health System Engineering, Ira A. Fulton Schools of Engineering, Arizona State University, P.O.Box 879709, Tempe, AZ 85287-9719, USA
| | - Koji Sode
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan; Ultizyme International Ltd., 1-13-16, Minami, Meguro, Tokyo 152-0013, Japan; Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 and North Carolina State University, Raleigh, NC 27695, USA.
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11
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Carpenter AC, Paulsen IT, Williams TC. Blueprints for Biosensors: Design, Limitations, and Applications. Genes (Basel) 2018; 9:E375. [PMID: 30050028 PMCID: PMC6115959 DOI: 10.3390/genes9080375] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022] Open
Abstract
Biosensors are enabling major advances in the field of analytics that are both facilitating and being facilitated by advances in synthetic biology. The ability of biosensors to rapidly and specifically detect a wide range of molecules makes them highly relevant to a range of industrial, medical, ecological, and scientific applications. Approaches to biosensor design are as diverse as their applications, with major biosensor classes including nucleic acids, proteins, and transcription factors. Each of these biosensor types has advantages and limitations based on the intended application, and the parameters that are required for optimal performance. Specifically, the choice of biosensor design must consider factors such as the ligand specificity, sensitivity, dynamic range, functional range, mode of output, time of activation, ease of use, and ease of engineering. This review discusses the rationale for designing the major classes of biosensor in the context of their limitations and assesses their suitability to different areas of biotechnological application.
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Affiliation(s)
- Alexander C Carpenter
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
- CSIRO Synthetic Biology Future Science Platform, Canberra, ACT 2601, Australia.
| | - Ian T Paulsen
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Thomas C Williams
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
- CSIRO Synthetic Biology Future Science Platform, Canberra, ACT 2601, Australia.
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12
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Bollella P, Gorton L, Antiochia R. Direct Electron Transfer of Dehydrogenases for Development of 3rd Generation Biosensors and Enzymatic Fuel Cells. SENSORS (BASEL, SWITZERLAND) 2018; 18:E1319. [PMID: 29695133 PMCID: PMC5982196 DOI: 10.3390/s18051319] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/16/2018] [Accepted: 04/19/2018] [Indexed: 01/04/2023]
Abstract
Dehydrogenase based bioelectrocatalysis has been increasingly exploited in recent years in order to develop new bioelectrochemical devices, such as biosensors and biofuel cells, with improved performances. In some cases, dehydrogeases are able to directly exchange electrons with an appropriately designed electrode surface, without the need for an added redox mediator, allowing bioelectrocatalysis based on a direct electron transfer process. In this review we briefly describe the electron transfer mechanism of dehydrogenase enzymes and some of the characteristics required for bioelectrocatalysis reactions via a direct electron transfer mechanism. Special attention is given to cellobiose dehydrogenase and fructose dehydrogenase, which showed efficient direct electron transfer reactions. An overview of the most recent biosensors and biofuel cells based on the two dehydrogenases will be presented. The various strategies to prepare modified electrodes in order to improve the electron transfer properties of the device will be carefully investigated and all analytical parameters will be presented, discussed and compared.
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Affiliation(s)
- Paolo Bollella
- Department of Chemistry and Drug Technologies, Sapienza University of Rome P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Lo Gorton
- Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, 221 00 Lund, Sweden.
| | - Riccarda Antiochia
- Department of Chemistry and Drug Technologies, Sapienza University of Rome P.le Aldo Moro 5, 00185 Rome, Italy.
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13
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Algov I, Grushka J, Zarivach R, Alfonta L. Highly Efficient Flavin-Adenine Dinucleotide Glucose Dehydrogenase Fused to a Minimal Cytochrome C Domain. J Am Chem Soc 2017; 139:17217-17220. [PMID: 28915057 DOI: 10.1021/jacs.7b07011] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Flavin-adenine dinucleotide (FAD) dependent glucose dehydrogenase (GDH) is a thermostable, oxygen insensitive redox enzyme used in bioelectrochemical applications. The FAD cofactor of the enzyme is buried within the proteinaceous matrix of the enzyme, which makes it almost unreachable for a direct communication with an electrode. In this study, FAD dependent glucose dehydrogenase was fused to a natural minimal cytochrome domain in its c-terminus to achieve direct electron transfer. We introduce a fusion enzyme that can communicate with an electrode directly, without the use of a mediator molecule. The new fusion enzyme, with its direct electron transfer abilities displays superior activity to that of the native enzyme, with a kcat that is ca. 3 times higher than that of the native enzyme, a kcat/KM that is more than 3 times higher than that of GDH and 5 to 7 times higher catalytic currents with an onset potential of ca. (-) 0.15 V vs Ag/AgCl, affording higher glucose sensing selectivity. Taking these parameters into consideration, the fusion enzyme presented can serve as a good candidate for blood glucose monitoring and for other glucose based bioelectrochemical systems.
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Affiliation(s)
- Itay Algov
- Department of Life Sciences and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
| | - Jennifer Grushka
- Department of Life Sciences and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
| | - Raz Zarivach
- Department of Life Sciences and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel.,National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
| | - Lital Alfonta
- Department of Life Sciences and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 84105, Israel
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14
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Ortiz R, Rahman M, Zangrilli B, Sygmund C, Micheelsen PO, Silow M, Toscano MD, Ludwig R, Gorton L. Engineering of Cellobiose Dehydrogenases for Improved Glucose Sensitivity and Reduced Maltose Affinity. ChemElectroChem 2017. [DOI: 10.1002/celc.201600781] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Roberto Ortiz
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O. Box 124 SE-22100 Lund Sweden
- Department of Chemistry; Kemitorvet, DTU 2800 Kgs. Lyngby Denmark
| | - Mahbubur Rahman
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O. Box 124 SE-22100 Lund Sweden
| | - Beatrice Zangrilli
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O. Box 124 SE-22100 Lund Sweden
| | - Christoph Sygmund
- Department of Food Science and Technology; BOKU-University of Natural Resources and Life Sciences; Muthgasse 18 A-1190 Vienna Austria
| | | | - Maria Silow
- Novozymes A/S; Krogshøgvej 36, DTU 2880 Bagsvœrd Denmark
| | | | - Roland Ludwig
- Department of Food Science and Technology; BOKU-University of Natural Resources and Life Sciences; Muthgasse 18 A-1190 Vienna Austria
| | - Lo Gorton
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O. Box 124 SE-22100 Lund Sweden
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15
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Babanova S, Matanovic I, Chavez MS, Atanassov P. Role of Quinones in Electron Transfer of PQQ–Glucose Dehydrogenase Anodes—Mediation or Orientation Effect. J Am Chem Soc 2015; 137:7754-62. [DOI: 10.1021/jacs.5b03053] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sofia Babanova
- Chemical
and Biological Engineering Department, Center for Micro-engineering
Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Ivana Matanovic
- Chemical
and Biological Engineering Department, Center for Micro-engineering
Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Theoretical
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Madelaine Seow Chavez
- Chemical
and Biological Engineering Department, Center for Micro-engineering
Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Plamen Atanassov
- Chemical
and Biological Engineering Department, Center for Micro-engineering
Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
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16
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Liang K, Ricco R, Doherty CM, Styles MJ, Bell S, Kirby N, Mudie S, Haylock D, Hill AJ, Doonan CJ, Falcaro P. Biomimetic mineralization of metal-organic frameworks as protective coatings for biomacromolecules. Nat Commun 2015; 6:7240. [PMID: 26041070 PMCID: PMC4468859 DOI: 10.1038/ncomms8240] [Citation(s) in RCA: 799] [Impact Index Per Article: 88.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/20/2015] [Indexed: 12/22/2022] Open
Abstract
Enhancing the robustness of functional biomacromolecules is a critical challenge in biotechnology, which if addressed would enhance their use in pharmaceuticals, chemical processing and biostorage. Here we report a novel method, inspired by natural biomineralization processes, which provides unprecedented protection of biomacromolecules by encapsulating them within a class of porous materials termed metal-organic frameworks. We show that proteins, enzymes and DNA rapidly induce the formation of protective metal-organic framework coatings under physiological conditions by concentrating the framework building blocks and facilitating crystallization around the biomacromolecules. The resulting biocomposite is stable under conditions that would normally decompose many biological macromolecules. For example, urease and horseradish peroxidase protected within a metal-organic framework shell are found to retain bioactivity after being treated at 80 °C and boiled in dimethylformamide (153 °C), respectively. This rapid, low-cost biomimetic mineralization process gives rise to new possibilities for the exploitation of biomacromolecules.
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Affiliation(s)
- Kang Liang
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Raffaele Ricco
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Cara M. Doherty
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Mark J. Styles
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Stephen Bell
- Department of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Nigel Kirby
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3169, Australia
| | - Stephen Mudie
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3169, Australia
| | - David Haylock
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
- The Australian Regenerative Medicine Institute, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Anita J. Hill
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Christian J. Doonan
- Department of Chemistry, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Paolo Falcaro
- CSIRO Manufacturing Flagship, Private Bag 10, Clayton South, Victoria 3169, Australia
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17
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Babanova S, Matanovic I, Atanassov P. Quinone-Modified Surfaces for Enhanced Enzyme-Electrode Interactions in Pyrroloquinoline-Quinone-Dependent Glucose Dehydrogenase Anodes. ChemElectroChem 2014. [DOI: 10.1002/celc.201402104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Sarauli D, Xu C, Dietzel B, Schulz B, Lisdat F. A multilayered sulfonated polyaniline network with entrapped pyrroloquinoline quinone-dependent glucose dehydrogenase: tunable direct bioelectrocatalysis. J Mater Chem B 2014; 2:3196-3203. [DOI: 10.1039/c4tb00336e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Differently sulfonated polyaniline copolymers have been utilized as matrices for the entrapment of PQQ-GDH, resulting in a direct bioelectrocatalytic response together with a colour change upon addition of the substrate.
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Affiliation(s)
- David Sarauli
- Biosystems Technology
- Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau
- D-15745 Wildau, Germany
| | | | - Birgit Dietzel
- Institute for Thin Film and Microsensor Technologies
- D-14513 Teltow, Germany
| | - Burkhard Schulz
- University of Potsdam
- Institute for Chemistry
- D-14476 Potsdam, Germany
| | - Fred Lisdat
- Biosystems Technology
- Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau
- D-15745 Wildau, Germany
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19
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Sarauli D, Xu C, Dietzel B, Schulz B, Lisdat F. Differently substituted sulfonated polyanilines: the role of polymer compositions in electron transfer with pyrroloquinoline quinone-dependent glucose dehydrogenase. Acta Biomater 2013; 9:8290-8. [PMID: 23777884 DOI: 10.1016/j.actbio.2013.06.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/28/2013] [Accepted: 06/05/2013] [Indexed: 01/04/2023]
Abstract
Sulfonated polyanilines have become promising building blocks in the construction of biosensors, and therefore we use here differently substituted polymer forms to investigate the role of their structural composition and properties in achieving a direct electron transfer with the redox enzyme pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH). To this end, new copolymers containing different ratios of 2-methoxyaniline-5-sulfonic acid (MAS), 3-aminobenzenesulfonic acid (ABS) and 3-aminobenzoic acid (AB) units have been chemically synthesized. All polymers have been studied with respect to their ability to react directly with PQQ-GDH. This interaction has been monitored initially in solution, and subsequently on electrode surfaces. The results show that only copolymers with MAS and aniline units can directly react with PQQ-GDH in solution; the background can be mainly ascribed to the emeraldine salt redox state of the polymer, allowing rather easy reduction. However, when polymers and the enzyme are immobilized on the surface of carbon nanotube-containing electrodes, direct bioelectrocatalysis is also feasible in the case of copolymers composed of ABS/AB and MAS/AB units, existing initially in pernigraniline base form. This verifies that a productive interaction of the enzyme with differently substituted polymers is feasible when the electrode potential can be used to drive the reaction towards the oxidation of the substrate-reduced enzyme. These results clearly demonstrate that enzyme electrodes based on sulfonated polyanilines and direct bioelectrocatalysis can be successfully constructed.
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Affiliation(s)
- David Sarauli
- Biosystems Technology, Wildau University of Applied Sciences, Bahnhofstr. 1, Wildau, D-15745 Wildau, Germany
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20
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Principles of direct (mediator free) bioelectrocatalysis. Bioelectrochemistry 2012; 88:70-5. [DOI: 10.1016/j.bioelechem.2012.05.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 04/24/2012] [Accepted: 05/03/2012] [Indexed: 11/21/2022]
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21
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22
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Sarauli D, Riedel M, Wettstein C, Hahn R, Stiba K, Wollenberger U, Leimkühler S, Schmuki P, Lisdat F. Semimetallic TiO2 nanotubes: new interfaces for bioelectrochemical enzymatic catalysis. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16427b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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23
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Flexer V, Durand F, Tsujimura S, Mano N. Efficient direct electron transfer of PQQ-glucose dehydrogenase on carbon cryogel electrodes at neutral pH. Anal Chem 2011; 83:5721-7. [PMID: 21662989 DOI: 10.1021/ac200981r] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a comprehensive study of the direct electron transfer reaction of soluble PQQ-GDH from Acinetobacter calcoaceticus. Wild-type PQQ-sGDH nonspecifically adsorbed on carbon cryogel electrodes retained its enzymatic activity for glucose and maltose oxidation at pH 7.2 and 37 °C. The cyclic voltammograms in the absence of enzymatic substrate showed 2 redox peaks that suggest a two-step, one-electron oxidation/reduction of PQQ. Calibration curves showed a linear amperometric response for a wide glucose concentration range, including the values normally found in blood. At saturation, the catalytic current reached 0.93 mA cm(-2). Altogether the experimental results suggest that the amperometric output of the electrodes and the shape of the calibration curves represent a combination of the intrinsic enzyme kinetics, the maximum rate of heterogeneous electron transfer and the substrate accessibility to the enzyme's active center caused by the confinement of the enzyme into the mesoporous structure. A new mutant enzyme, N428C, developed in our group that shows almost twice the maximum catalytic activity in homogeneous experiments in solution, also showed a DET signal on carbon cryogel electrodes for glucose electro-oxidation. The higher activity for the mutant enzyme was also verified on the electrode surface.
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Affiliation(s)
- Victoria Flexer
- Université de Bordeaux, Centre de Recherche Paul Pascal, CRPP-UPR 8641-CNRS, Pessac, France
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24
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Strategies to extend the lifetime of bioelectrochemical enzyme electrodes for biosensing and biofuel cell applications. Appl Microbiol Biotechnol 2010; 89:1315-22. [DOI: 10.1007/s00253-010-3073-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 12/09/2010] [Accepted: 12/09/2010] [Indexed: 10/18/2022]
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25
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Taneoka A, Sakaguchi-Mikami A, Yamazaki T, Tsugawa W, Sode K. The construction of a glucose-sensing luciferase. Biosens Bioelectron 2009; 25:76-81. [PMID: 19559587 DOI: 10.1016/j.bios.2009.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 05/29/2009] [Accepted: 06/02/2009] [Indexed: 11/18/2022]
Abstract
A novel luminescence-based glucose-sensing molecule was created by combining a galactose-/glucose-binding protein (GGBP) with luciferase. The glucose-sensing luciferase (GlcLuc) was constructed using a GGBP fused with a large domain and a small domain of Firefly luciferase (Lluc and Sluc). The luminescence intensity-based analysis with E. coli recombinant protein showed that the GlcLuc had luciferase activity in glucose or galactose in a concentration-dependent manner (K(d)=3.9 microM for glucose and 11 microM for galactose), and that the increase in the activity saturated within one minute after the injection of the ligands. These results indicated that the conformation change of the GGBP moiety following the ligand binding effectively induced the reconstitution of the GGBP-fused split luciferase. The Asp459Asn mutation, which was expected to lead to a glucose specific binding ability, was then introduced into the GlcLuc. The GlcLuc mutant showed the luciferase activity increasing only with the increase of glucose concentration, but not with that of galactose. Our results demonstrate that the GGBP fused with a split luciferase, which is reconstituted rapidly and specifically in the presence of glucose, provides a novel glucose-sensing system based on luminescence and may also contribute to the construction of luminescence-based sensing molecules for other substrates using other PBPs.
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Affiliation(s)
- Atsushi Taneoka
- Graduate School of Technology, Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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26
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Yamazaki T, Okuda-Shimazaki J, Sakata C, Tsuya T, Sode K. Construction and Characterization of Direct Electron Transfer-Type Continuous Glucose Monitoring System Employing Thermostable Glucose Dehydrogenase Complex. ANAL LETT 2008. [DOI: 10.1080/00032710802350567] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Cracknell JA, Vincent KA, Armstrong FA. Enzymes as Working or Inspirational Electrocatalysts for Fuel Cells and Electrolysis. Chem Rev 2008; 108:2439-61. [DOI: 10.1021/cr0680639] [Citation(s) in RCA: 846] [Impact Index Per Article: 52.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Biofuel cell system employing thermostable glucose dehydrogenase. Biotechnol Lett 2008; 30:1753-8. [DOI: 10.1007/s10529-008-9749-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 04/28/2008] [Accepted: 05/02/2008] [Indexed: 11/25/2022]
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29
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Sakaguchi-Mikami A, Taneoka A, Yamoto R, Ferri S, Sode K. Engineering of ligand specificity of periplasmic binding protein for glucose sensing. Biotechnol Lett 2008; 30:1453-60. [DOI: 10.1007/s10529-008-9712-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 03/11/2008] [Accepted: 03/13/2008] [Indexed: 10/22/2022]
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30
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Ivnitski D, Atanassov P, Apblett C. Direct Bioelectrocatalysis of PQQ-Dependent Glucose Dehydrogenase. ELECTROANAL 2007. [DOI: 10.1002/elan.200703899] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Minteer SD, Liaw BY, Cooney MJ. Enzyme-based biofuel cells. Curr Opin Biotechnol 2007; 18:228-34. [PMID: 17399977 DOI: 10.1016/j.copbio.2007.03.007] [Citation(s) in RCA: 279] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2006] [Revised: 02/20/2007] [Accepted: 03/21/2007] [Indexed: 11/15/2022]
Abstract
Enzyme-based biofuel cells possess several positive attributes for energy conversion, including renewable catalysts, flexibility of fuels (including renewables), and the ability to operate at room temperature. However, enzyme-based biofuel cells remain limited by short lifetimes, low power densities and inefficient oxidation of fuels. Recent advances in biofuel cell technology have addressed these deficiencies and include methods to increase lifetime and environmental stability.
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Affiliation(s)
- Shelley D Minteer
- Saint Louis University, Department of Chemistry, St. Louis, MO, USA.
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32
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Okuda J, Yamazaki T, Fukasawa M, Kakehi N, Sode K. The Application of Engineered Glucose Dehydrogenase to a Direct Electron–Transfer‐Type Continuous Glucose Monitoring System and a Compartmentless Biofuel Cell. ANAL LETT 2007. [DOI: 10.1080/00032710600964692] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Yuhashi N, Tomiyama M, Okuda J, Igarashi S, Ikebukuro K, Sode K. Development of a novel glucose enzyme fuel cell system employing protein engineered PQQ glucose dehydrogenase. Biosens Bioelectron 2005; 20:2145-50. [PMID: 15741089 DOI: 10.1016/j.bios.2004.08.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2004] [Revised: 08/05/2004] [Accepted: 08/12/2004] [Indexed: 10/26/2022]
Abstract
Glucose dehydrogenase harboring pyrroloquinoline quinone as the prosthetic group (PQQGDH) from Acinetobacter calcoaceticus is an ideal enzyme for the anode of biofuel cell, because of its oxygen insensitivity and high catalytic efficiency. However, the application of PQQGDH for the bioanode is inherently limited because of its instability. Using Ser415Cys mutant whose stability was greatly improved, we constructed the biofuel cell system employing the engineered PQQGDH as the bioanode enzyme and bilirubin oxidase (BOD) as the biocathode, and compared the stability of the biofuel cell with that employing wild-type PQQGDH. The maximum power density was 17.6 microW/cm2 at an external optimal load of 200 k omega. Using Ser415Cys mutant, the lifetime of the biofuel cell system was greatly extended to 152 h, more than six times as that of the biofuel cell employing the wild-type.
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Affiliation(s)
- Noriko Yuhashi
- Department of Life Science and Biotechnology, Tokyo University of Agriculture and Technology, Nakamachi 2-24-16, Koganei, Tokyo 184-8588, Japan
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34
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Šetkus A, Galdikas A, Laurinavičius V, Meškys R, Mironas A, Razumienė J. Electric charge transport in the symmetric metal–enzyme junctions affected by biochemical interaction. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2004.08.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Igarashi S, Okuda J, Ikebukuro K, Sode K. Molecular engineering of PQQGDH and its applications. Arch Biochem Biophys 2004; 428:52-63. [PMID: 15234269 DOI: 10.1016/j.abb.2004.06.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2004] [Revised: 06/07/2004] [Indexed: 10/26/2022]
Affiliation(s)
- Satoshi Igarashi
- National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
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