1
|
Kataoka N. Ketogluconate production by Gluconobacter strains: enzymes and biotechnological applications. Biosci Biotechnol Biochem 2024; 88:499-508. [PMID: 38323387 DOI: 10.1093/bbb/zbae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/01/2024] [Indexed: 02/08/2024]
Abstract
Gluconobacter strains perform incomplete oxidation of various sugars and alcohols, employing regio- and stereoselective membrane-bound dehydrogenases oriented toward the periplasmic space. This oxidative fermentation process is utilized industrially. The ketogluconate production pathway, characteristic of these strains, begins with the conversion of d-glucose to d-gluconate, which then diverges and splits into 2 pathways producing 5-keto-d-gluconate and 2-keto-d-gluconate and subsequently 2,5-diketo-d-gluconate. These transformations are facilitated by membrane-bound d-glucose dehydrogenase, glycerol dehydrogenase, d-gluconate dehydrogenase, and 2-keto-d-gluconate dehydrogenase. The variance in end products across Gluconobacter strains stems from the diversity of enzymes and their activities. This review synthesizes biochemical and genetic knowledge with biotechnological applications, highlighting recent advances in metabolic engineering and the development of an efficient production process focusing on enzymes relevant to the ketogluconate production pathway in Gluconobacter strains.
Collapse
Affiliation(s)
- Naoya Kataoka
- Organization for Research Initiatives, Yamaguchi University, Yamaguchi, Japan
- Research Center for Thermotolerant Microbial Resources, Yamaguchi University, Yamaguchi, Japan
| |
Collapse
|
2
|
Wang Y, Sun R, Chen P, Wang F. Catalytic Synthesis of (S)-CHBE by Directional Coupling and Immobilization of Carbonyl Reductase and Glucose Dehydrogenase. Biomolecules 2024; 14:504. [PMID: 38672520 PMCID: PMC11048691 DOI: 10.3390/biom14040504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
Ethyl (S)-4-chloro-3-hydroxybutyrate ((S)-CHBE) is an important chiral intermediate in the synthesis of the cholesterol-lowering drug atorvastatin. Studying the use of SpyTag/SpyCatcher and SnoopTag/SnoopCatcher systems for the asymmetric reduction reaction and directed coupling coenzyme regeneration is practical for efficiently synthesizing (S)-CHBE. In this study, Spy and Snoop systems were used to construct a double-enzyme directed fixation system of carbonyl reductase (BsCR) and glucose dehydrogenase (BsGDH) for converting 4-chloroacetoacetate (COBE) to (S)-CHBE and achieving coenzyme regeneration. We discussed the enzymatic properties of the immobilized enzyme and the optimal catalytic conditions and reusability of the double-enzyme immobilization system. Compared to the free enzyme, the immobilized enzyme showed an improved optimal pH and temperature, maintaining higher relative activity across a wider range. The double-enzyme immobilization system was applied to catalyze the asymmetric reduction reaction of COBE, and the yield of (S)-CHBE reached 60.1% at 30 °C and pH 8.0. In addition, the double-enzyme immobilization system possessed better operational stability than the free enzyme, and maintained about 50% of the initial yield after six cycles. In summary, we show a simple and effective strategy for self-assembling SpyCatcher/SnoopCatcher and SpyTag/SnoopTag fusion proteins, which inspires building more cascade systems at the interface. It provides a new method for facilitating the rapid construction of in vitro immobilized multi-enzyme complexes from crude cell lysate.
Collapse
Affiliation(s)
- Yadong Wang
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education, Beijing Technology and Business University (BTBU), Beijing 100048, China; (Y.W.); (R.S.); (P.C.)
- School of Light Industry Science and Engineering, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Ruiqi Sun
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education, Beijing Technology and Business University (BTBU), Beijing 100048, China; (Y.W.); (R.S.); (P.C.)
- School of Light Industry Science and Engineering, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Peng Chen
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education, Beijing Technology and Business University (BTBU), Beijing 100048, China; (Y.W.); (R.S.); (P.C.)
- School of Light Industry Science and Engineering, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Fenghuan Wang
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education, Beijing Technology and Business University (BTBU), Beijing 100048, China; (Y.W.); (R.S.); (P.C.)
- School of Light Industry Science and Engineering, Beijing Technology and Business University (BTBU), Beijing 100048, China
| |
Collapse
|
3
|
Probst D, Twiddy J, Hatada M, Pavlidis S, Daniele M, Sode K. Development of Direct Electron Transfer-Type Extended Gate Field Effect Transistor Enzymatic Sensors for Metabolite Detection. Anal Chem 2024; 96:4076-4085. [PMID: 38408165 DOI: 10.1021/acs.analchem.3c04599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
In this work, direct electron transfer (DET)-type extended gate field effect transistor (EGFET) enzymatic sensors were developed by employing DET-type or quasi-DET-type enzymes to detect glucose or lactate in both 100 mM potassium phosphate buffer and artificial sweat. The system employed either a DET-type glucose dehydrogenase or a quasi-DET-type lactate oxidase, the latter of which was a mutant enzyme with suppressed oxidase activity and modified with amine-reactive phenazine ethosulfate. These enzymes were immobilized on the extended gate electrodes. Changes in the measured transistor drain current (ID) resulting from changes to the working electrode junction potential (φ) were observed as glucose and lactate concentrations were varied. Calibration curves were generated for both absolute measured ID and ΔID (normalized to a blank solution containing no substrate) to account for variations in enzyme immobilization and conjugation to the mediator and variations in reference electrode potential. This work resulted in a limit of detection of 53.9 μM (based on ID) for glucose and 2.12 mM (based on ID) for lactate, respectively. The DET-type and Quasi-DET-type EGFET enzymatic sensor was then modeled using the case of the lactate sensor as an equivalent circuit to validate the principle of sensor operation being driven through OCP changes caused by the substrate-enzyme interaction. The model showed slight deviation from collected empirical data with 7.3% error for the slope and 8.6% error for the y-intercept.
Collapse
Affiliation(s)
- David Probst
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Jack Twiddy
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Mika Hatada
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| | - Spyridon Pavlidis
- Department of Electrical and Computer Engineering, NC State University, Raleigh, North Carolina 27606, United States
| | - Michael Daniele
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
- Department of Electrical and Computer Engineering, NC State University, Raleigh, North Carolina 27606, United States
| | - Koji Sode
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
4
|
Lu J, Zhuang X, Wei H, Liu R, Ji W, Yu P, Ma W, Mao L. Enzymatic Galvanic Redox Potentiometry for In Vivo Biosensing. Anal Chem 2024; 96:3672-3678. [PMID: 38361229 DOI: 10.1021/acs.analchem.4c00185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Redox potentiometry has emerged as a new platform for in vivo sensing, with improved neuronal compatibility and strong tolerance against sensitivity variation caused by protein fouling. Although enzymes show great possibilities in the fabrication of selective redox potentiometry, the fabrication of an enzyme electrode to output open-circuit voltage (EOC) with fast response remains challenging. Herein, we report a concept of novel enzymatic galvanic redox potentiometry (GRP) with improved time response coupling the merits of the high selectivity of enzyme electrodes with the excellent biocompatibility and reliability of GRP sensors. With a glucose biosensor as an illustration, we use flavin adenine dinucleotide-dependent glucose dehydrogenase as the recognition element and carbon black as the potential relay station to improve the response time. We find that the enzymatic GRP biosensor rapidly responds to glucose with a good linear relationship between EOC and the logarithm of glucose concentration within a range from 100 μM to 2.65 mM. The GRP biosensor shows high selectivity over O2 and coexisting neurochemicals, good reversibility, and sensitivity and can in vivo monitor glucose dynamics in rat brain. We believe that this study will pave a new platform for the in vivo potentiometric biosensing of chemical events with high reliability.
Collapse
Affiliation(s)
- Jiaojiao Lu
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Xuming Zhuang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Huan Wei
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| | - Ran Liu
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| | - Wenliang Ji
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjie Ma
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Lanqun Mao
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| |
Collapse
|
5
|
Kassem R, Cousin A, Clesse D, Poignavent V, Trolet A, Ritzenthaler C, Michon T, Chovin A, Demaille C. Nanobody-guided redox and enzymatic functionalization of icosahedral virus particles for enhanced bioelectrocatalysis. Bioelectrochemistry 2024; 155:108570. [PMID: 37769510 DOI: 10.1016/j.bioelechem.2023.108570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 10/03/2023]
Abstract
Icosahedral, 30 nm diameter, grapevine fanleaf virus (GFLV) virus particles are adsorbed onto electrodes and used as nanoscaffolds for the assembly of an integrated glucose oxidizing system, comprising the enzyme pyrroloquinoline quinone-glucose dehydrogenase (PQQ-GDH) and ferrocenylated polyethylene glycol chains (Fc-PEG) as a redox co-substrate. Two different GFLV-specific nanobodies, either fused to the enzyme, or chemically conjugated to Fc-PEG, are used for the regio-selective immunodecoration of the viral particles. A comprehensive kinetic characterization of the enzymatic function of the particles, initially decorated with the enzyme alone shows that simple immobilization on the GFLV capsid has no effect on the kinetic scheme of the enzyme, nor on its catalytic activity. However, we find that co-immobilization of the enzyme and the Fc-PEG co-substrate on GFLV does induce enzymatic enhancement, by promoting cooperativity between the two subunits of the homodimeric enzyme, via "synchronization" of their redox state. A decrease in inhibition of the enzyme by its substrate (glucose) is also observed.
Collapse
Affiliation(s)
- Racha Kassem
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013 Paris, France
| | - Anne Cousin
- Institut de Biologie Moléculaire des Plantes, UPR2357 du Centre National de la Recherche Scientifique, Université de Strasbourg, F-67084 Strasbourg, France
| | - Daniel Clesse
- Institut de Biologie Moléculaire des Plantes, UPR2357 du Centre National de la Recherche Scientifique, Université de Strasbourg, F-67084 Strasbourg, France
| | - Vianney Poignavent
- Institut de Biologie Moléculaire des Plantes, UPR2357 du Centre National de la Recherche Scientifique, Université de Strasbourg, F-67084 Strasbourg, France
| | - Adrien Trolet
- Institut de Biologie Moléculaire des Plantes, UPR2357 du Centre National de la Recherche Scientifique, Université de Strasbourg, F-67084 Strasbourg, France
| | - Christophe Ritzenthaler
- Institut de Biologie Moléculaire des Plantes, UPR2357 du Centre National de la Recherche Scientifique, Université de Strasbourg, F-67084 Strasbourg, France.
| | - Thierry Michon
- Université de Bordeaux, Biologie du Fruit et Pathologie, INRA UMR 1332, F-33140 Villenave d'Ornon, France.
| | - Arnaud Chovin
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013 Paris, France.
| | - Christophe Demaille
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire, F-75013 Paris, France.
| |
Collapse
|
6
|
Yue X, Li Y, Yang L, Sang D, Huang Z, Chen F. Sustainable asymmetric synthesis of diltiazem precursor enabled by recombinant Escherichia coli whole cells co-expressing an engineered ketoreductase and glucose dehydrogenase. Biotechnol J 2024; 19:e2300250. [PMID: 38048389 DOI: 10.1002/biot.202300250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 11/20/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023]
Abstract
As a key synthetic intermediate of the cardiovascular drug diltiazem, methyl (2R,3S)-3-(4-methoxyphenyl) glycidate ((2R,3S)-MPGM) (1) is accessible via the ring closure of chlorohydrin (3S)-methyl 2-chloro-3-hydroxy-3-(4-methoxyphenyl)propanoate ((3S)-2). We report the efficient reduction of methyl 2-chloro-3-(4-methoxyphenyl)-3-oxo-propanoate (3) to (3S)-2 using an engineered enzyme SSCRM2 possessing 4.5-fold improved specific activity, which was obtained through the structure-guided site-saturation mutagenesis of the ketoreductase SSCR by reliving steric hindrance and undesired interactions. With the combined use of the co-expression fine-tuning strategy, a recombinant E. coli (pET28a-RBS-SSCRM2 /pACYCDuet-GDH), co-expressing SSCRM2 and glucose dehydrogenase, was constructed and optimized for protein expression. After optimizing the reaction conditions, whole-cell-catalyzed complete reduction of industrially relevant 300 g L-1 of 3 was realized, affording (3S)-2 with 99% ee and a space-time yield of 519.1 g∙L-1 ∙d-1 , representing the highest record for the biocatalytic synthesis of (3S)-2 reported to date. The E-factor of this biocatalytic synthesis was 24.5 (including water). Chiral alcohol (3S)-2 generated in this atom-economic synthesis was transformed to (2R,3S)-MPGM in 95% yield with 99% ee.
Collapse
Affiliation(s)
- Xiaoping Yue
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
| | - Yitong Li
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
| | - Lin Yang
- School of Health, Jiangxi Normal University, Nanchang, P. R. China
| | - Di Sang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
| | - Zedu Huang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, P. R. China
- Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, Shanghai, P. R. China
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, P. R. China
| |
Collapse
|
7
|
Li X, Jiang J, Li X, Liu D, Han M, Li W, Zhang H. Characterization and Application of a Novel Glucose Dehydrogenase with Excellent Organic Solvent Tolerance for Cofactor Regeneration in Carbonyl Reduction. Appl Biochem Biotechnol 2023; 195:7553-7567. [PMID: 37014512 DOI: 10.1007/s12010-023-04432-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2023] [Indexed: 04/05/2023]
Abstract
An efficient cofactor regeneration system has been developed to provide a hydride source for the preparation of optically pure alcohols by carbonyl reductase-catalyzed asymmetric reduction. This system employed a novel glucose dehydrogenase (BcGDH90) from Bacillus cereus HBL-AI. The gene encoding BcGDH90 was found through the genome-wide functional annotation. Homology-built model study revealed that BcGDH90 was a homo-tetramer, and each subunit was composed of βD-αE-αF-αG-βG motif, which was responsible for substrate binding and tetramer formation. The gene of BcGDH90 was cloned and expressed in Escherichia coli. The recombinant BcGDH90 exhibited maximum activity of 45.3 U/mg at pH 9.0 and 40 °C. BcGDH90 showed high stability in a wide pH range of 4.0-10.0 and was stable after the incubation at 55 °C for 5 h. BcGDH90 was not a metal ion-dependent enzyme, but Zn2+ could seriously inhibit its activity. BcGDH90 displayed excellent tolerance to 90% of acetone, methanol, ethanol, n-propanol, and isopropanol. Furthermore, BcGDH90 was applied to regenerate NADPH for the asymmetric biosynthesis of (S)-(+)-1-phenyl-1,2-ethanediol ((S)-PED) from hydroxyacetophenone (2-HAP) with high concentration, which increased the final efficiency by 59.4%. These results suggest that BcGDH90 is potentially useful for coenzyme regeneration in the biological reduction.
Collapse
Affiliation(s)
- Xiaozheng Li
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
| | - Junpo Jiang
- College of Life Science, Microbial Technology Innovation Center for Feed of Hebei Province, Hebei Agricultural University, Baoding, 071001, China
| | - Xinyue Li
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
| | - Dexu Liu
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
| | - Mengnan Han
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China
| | - Wei Li
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China.
| | - Honglei Zhang
- College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, China.
| |
Collapse
|
8
|
Gessler S, Porsch U, Klonoff DC, Marquant M. A New Digital Point-of-Care Tool With Advanced Blood Glucose Measuring Technology. J Diabetes Sci Technol 2023; 17:1321-1325. [PMID: 35510612 PMCID: PMC10563539 DOI: 10.1177/19322968221092763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
cobas® pulse is a point-of-care blood glucose (BG) measuring system for multiple-patient use in professional healthcare settings. The system provides advances in connectivity and BG measuring technology, and has multiple fail-safes to improve accuracy and reduce the risk of user error. Flavin adenine dinucleotide-dependent glucose dehydrogenase on the working electrode catalyzes oxidation of β-D-glucose in the blood sample. A redox mediator/electron acceptor, on both the working and the counter electrode, facilitates diffusion of electrons in proportion to the glucose concentration and compensates for the effects of potential interfering agents. During development, >1 million test strip measurements were performed using >8000 test scenarios to refine the algorithm model. No clinically relevant interference was identified with extreme variations in blood properties and drugs in whole blood samples.
Collapse
Affiliation(s)
| | | | - David C. Klonoff
- Diabetes Research Institute, Mills-Peninsula Medical Center, San Mateo, CA, USA
| | | |
Collapse
|
9
|
Becker JM, Lielpetere A, Szczesny J, Bichon S, Gounel S, Mano N, Schuhmann W. Wiring of bilirubin oxidases with redox polymers on gas diffusion electrodes for increased stability of self-powered biofuel cells-based glucose sensing. Bioelectrochemistry 2023; 149:108314. [PMID: 36335789 DOI: 10.1016/j.bioelechem.2022.108314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/15/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Abstract
A new redox polymer/bilirubin oxidase (BOD)-based gas diffusion electrode was designed to be implemented as the non-current and non-stability limiting biocathode in a glucose/O2 biofuel cell that acts as a self-powered glucose biosensor. For the proof-of-concept, a bioanode comprising the Os-complex modified redox polymer P(VI-co-AA)-[Os(bpy)2Cl]Cl and FAD-dependent glucose dehydrogenase to oxidize the analyte was used. In order to develop an optimal O2-reducing biocathode for the biofuel cell Mv-BOD as well as Bp-BOD and Mo-BOD have been tested in gas diffusion electrodes in direct electron transfer as well as in mediated electron transfer immobilized in the Os-complex modified redox polymer P(VI-co-AA)-[Os(diCl-bpy)2]Cl2. The resulting biofuel cell exhibits a glucose-dependent current and power output in the concentration region between 1 and 10 mM. To create a more realistic test environment, the performance and long-term stability of the biofuel cell-based self-powered glucose biosensor has been investigated in a flow-through cell design.
Collapse
Affiliation(s)
- Jana M Becker
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
| | - Anna Lielpetere
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
| | - Julian Szczesny
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
| | - Sabrina Bichon
- Centre de Recherche Paul Pascal, CNRS UMR 5031, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
| | - Sébastien Gounel
- Centre de Recherche Paul Pascal, CNRS UMR 5031, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
| | - Nicolas Mano
- Centre de Recherche Paul Pascal, CNRS UMR 5031, University of Bordeaux, Avenue Albert Schweitzer, 33600 Pessac, France
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, D-44780 Bochum, Germany.
| |
Collapse
|
10
|
Cheng F, Xie WB, Gao XF, Chu RL, Xu SY, Wang YJ, Zheng YG. Development of a new chemo-enzymatic catalytic route for synthesis of (S)- 2-chlorophenylglycine. J Biotechnol 2022; 358:17-24. [PMID: 35987310 DOI: 10.1016/j.jbiotec.2022.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/09/2022] [Accepted: 08/15/2022] [Indexed: 11/18/2022]
Abstract
(S)-2-chlorophenylglycine ((S)-CPG) is a key chiral intermediate for the synthesis of clopidogrel. Herein, a novel, efficient and environmentally friendly chemo-enzymatic route for the preparation of optically pure (S)-CPG was developed. A straightforward chemical synthesis of the corresponding prochiral keto acid substrate (2-chlorophenyl)glyoxylic acid (CPGA) was developed with 91.7% yield, which was enantioselectively aminated by leucine dehydrogenase (LeuDH) to (S)-CPG. Moreover, protein engineering of LeuDH was performed via directed evolution and semi-rational design. A beneficial variant EsLeuDH-F362L with enlarged substrate-binding pocket and increased hydrogen bond between K77 and substrate CPGA was constructed, which exhibited 2.1-fold enhanced specific activity but decreased thermal stability. Coupled with a glucose dehydrogenase from Bacillus megaterium (BmGDH) for NADH regeneration, EsLeuDH-F362L completely converted up to 0.5 M CPGA to (S)-CPG in 8 h at 40 °C.
Collapse
Affiliation(s)
- Feng Cheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Wei-Bang Xie
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xiao-Fan Gao
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Rong-Liang Chu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Shen-Yuan Xu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Ya-Jun Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China.
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, PR China
| |
Collapse
|
11
|
Viehauser MC, Breslmayr E, Scheiblbrandner S, Schachinger F, Ma S, Ludwig R. A cytochrome b-glucose dehydrogenase chimeric enzyme capable of direct electron transfer. Biosens Bioelectron 2022; 196:113704. [PMID: 34695687 DOI: 10.1016/j.bios.2021.113704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/06/2021] [Accepted: 10/10/2021] [Indexed: 02/05/2023]
Abstract
The development of third generation biosensors depends on the availability of direct electron transfer (DET) capable enzymes. A successful strategy is to fuse a cytochrome domain to an enzyme to fulfil the function of a built-in redox mediator between the catalytic center and the electrode. In this study, we fused the cytochrome domain of Neurospora crassa CDH IIA (NcCYT) N-terminally to glucose dehydrogenase from Glomerella cingulata (GcGDH) to generate the chimeric enzyme NcCYT-GcGDH in a large amount for further studies. Heterologous expression in P. pastoris and chromatographic purification resulted in 1.8 g of homogeneous chimeric enzyme. Biochemical and electrochemical characterization confirmed that the chimeric enzyme is catalytically active, able to perform interdomain electron transfer (IET) and direct electron transfer (DET) via the fused cytochrome domain. The midpoint redox potential of the fused b-type cytochrome is 91 mV vs. SHE at pH 6.5 and the specific current obtained on a porous graphite electrode is 2.3 μA cm-2. The high current obtained on this simple, unmodified electrode at a rather low redox potential is a promising starting point for further optimization. The high yield of NcCYT-GcGDH and its high specific activity supports the application of the chimeric enzyme in bioelectrocatalytic applications.
Collapse
Affiliation(s)
- Marie-Christin Viehauser
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Erik Breslmayr
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Stefan Scheiblbrandner
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Franziska Schachinger
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Su Ma
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria.
| | - Roland Ludwig
- Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190, Vienna, Austria
| |
Collapse
|
12
|
Chen R, Wei Q, Wei X, Liu Y, Zhang X, Chen X, Yin X, Xie T. Stable and efficient immobilization of bi-enzymatic NADPH cofactor recycling system under consecutive microwave irradiation. PLoS One 2020; 15:e0242564. [PMID: 33206717 PMCID: PMC7673530 DOI: 10.1371/journal.pone.0242564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/05/2020] [Indexed: 02/07/2023] Open
Abstract
One of the challenges in biocatalysis is the development of stable and efficient bi-enzymatic cascades for bio-redox reactions coupled to the recycling of soluble cofactors. Aldo-keto reductase (LEK) and glucose dehydrogenase (GDH) can be utilized as the NADPH recycling system for economic and efficient biocatalysis of (R)-4-chloro-3-hydroxybutanoate ((R)-CHBE), an important chiral pharmaceutical intermediate. The LEK and GDH was efficiently co-immobilized in mesocellular siliceous foams (MCFs) under microwave irradiation (CoLG-MIA). while they were also co-immobilized by entrapment in calcium alginate without MIA as control (CoLG-CA). The relative activity of CoLG-MIA was increased to 140% compared with that of free LEK. The CoLG-MIA exhibited a wider range of pH and temperature stabilities compared with other preparations. The thermal, storage and batch operational stabilities of microwave-assisted immobilized LEK-GDH were also improved. The NADPH recycling system exhibited the potential as the stable and efficient catalyst for the industrial preparation of (R)-CHBE.
Collapse
Affiliation(s)
- Rong Chen
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
- Faculty of Preventive Medicine of Medical College, Hangzhou Normal University, Hangzhou, P. R. China
| | - Qiuhui Wei
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xin Wei
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Yuheng Liu
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xiaomin Zhang
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xiabin Chen
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Xiaopu Yin
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| | - Tian Xie
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of Medicine, Hangzhou Normal University, Hangzhou, P. R. China
| |
Collapse
|
13
|
Plž M, Petrovičová T, Rebroš M. Semi-Continuous Flow Biocatalysis with Affinity Co-Immobilized Ketoreductase and Glucose Dehydrogenase. Molecules 2020; 25:molecules25184278. [PMID: 32961948 PMCID: PMC7570937 DOI: 10.3390/molecules25184278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 12/13/2022] Open
Abstract
The co-immobilization of ketoreductase (KRED) and glucose dehydrogenase (GDH) on highly cross-linked agarose (sepharose) was studied. Immobilization of these two enzymes was performed via affinity interaction between His-tagged enzymes (six histidine residues on the N-terminus of the protein) and agarose matrix charged with nickel (Ni2+ ions). Immobilized enzymes were applied in a semicontinuous flow reactor to convert the model substrate; α-hydroxy ketone. A series of biotransformation reactions with a substrate conversion of >95% were performed. Immobilization reduced the requirement for cofactor (NADP+) and allowed the use of higher substrate concentration in comparison with free enzymes. The immobilized system was also tested on bulky ketones and a significant enhancement in comparison with free enzymes was achieved.
Collapse
|
14
|
Deri-Zenaty B, Bachar S, Rebroš M, Fishman A. A coupled enzymatic reaction of tyrosinase and glucose dehydrogenase for the production of hydroxytyrosol. Appl Microbiol Biotechnol 2020; 104:4945-4955. [PMID: 32285177 DOI: 10.1007/s00253-020-10594-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 03/22/2020] [Accepted: 03/31/2020] [Indexed: 12/12/2022]
Abstract
Hydroxytyrosol (HT) is a diphenolic compound prevalent mainly in olives with pronounced antioxidant activity and proven benefits for human health. Current production limitations have motivated studies concerning the hydroxylation of tyrosol to HT with tyrosinase; however, accumulation of the diphenol is restricted due to its rapid subsequent oxidation to 3,4-quinone-phenylethanol. In this study, a continuous two-enzyme reaction system of sol-gel-immobilized tyrosinase and glucose dehydrogenase (GDH) was developed for the synthesis of HT. Purified tyrosinase from Bacillus megaterium (TyrBm) and E. coli cell extract expressing GDH from B. megaterium were encapsulated in a sol-gel matrix based on triethoxysilane precursors. While tyrosinase oxidized tyrosol to 3,4-quinone-phenylethanol, GDH catalyzed the simultaneous reduction of the cofactor NAD+ to NADH, which was the reducing agent enabling the accumulation of HT. Using 50 mM tyrosol, the immobilized system under optimized conditions, enabled a final HT yield of 7.68 g/L with productivity of 2.30 mg HT/mg TyrBm beads. Furthermore, the immobilized bi-enzyme system showed the feasibility for HT production from 1 mM tyrosol using a 0.5-L bioreactor as well as stable activity over 8 repeated cycles. The production of other diphenols with commercial importance such as L-dopa (3,4-dihydroxyphenylalanine) or piceatannol may be synthesized with this efficient approach.
Collapse
Affiliation(s)
- Batel Deri-Zenaty
- Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel
| | - Shani Bachar
- Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel
| | - Martin Rebroš
- Institute of Biotechnology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Ayelet Fishman
- Department of Biotechnology and Food Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel.
| |
Collapse
|
15
|
Cheng F, Li H, Zhang K, Li QH, Xie D, Xue YP, Zheng YG. Tuning amino acid dehydrogenases with featured sequences for L-phosphinothricin synthesis by reductive amination. J Biotechnol 2020; 312:35-43. [PMID: 32135177 DOI: 10.1016/j.jbiotec.2020.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/16/2020] [Accepted: 03/01/2020] [Indexed: 01/23/2023]
Abstract
Biosynthesizing unnatural chiral amino acids is challenging due to the limited reductive amination activity of amino acid dehydrogenase (AADH). Here, for the asymmetric synthesis of l-phosphinothricin from 2-oxo-4-[(hydroxy)(methyl)phosphinoyl]butyric acid (PPO), a glutamate dehydrogenase gene (named GluDH3) from Pseudomonas monteilii was selected, cloned and expressed in Escherichia coli (E. coli). To boost its activity, a "two-step"-based computational approach was developed and applied to select the potential beneficial amino acid positions on GluDH3. l-phosphinothricin was synthesized by GluDH-catalyzed asymmetric amination using the d-glucose dehydrogenase from Exiguobacterium sibiricum (EsGDH) for NADPH regeneration. Using lyophilized E. coli cells that co-expressed GluDH3_V375S and EsGDH, up to 89.04 g L-1 PPO loading was completely converted to l-phosphinothricin within 30 min at 35 °C with a space-time yield of up to 4.752 kg·L-1·d-1. The beneficial substitution V375S with increased polar interactions between K90, T193, and substrate PPO exhibited 168.2-fold improved catalytic efficiency (kcat/KM) and 344.8-fold enhanced specific activity. After the introduction of serine residues into other GluDHs at specific positions, forty engineered GluDHs exhibited the catalytic functions of "glufosinate dehydrogenase" towards PPO.
Collapse
Affiliation(s)
- Feng Cheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Heng Li
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Kai Zhang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Qing-Hua Li
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Dong Xie
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| | - Ya-Ping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China.
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, PR China; The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, PR China
| |
Collapse
|
16
|
Okuda-Shimazaki J, Yoshida H, Sode K. FAD dependent glucose dehydrogenases - Discovery and engineering of representative glucose sensing enzymes. Bioelectrochemistry 2019; 132:107414. [PMID: 31838457 DOI: 10.1016/j.bioelechem.2019.107414] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/24/2019] [Accepted: 11/10/2019] [Indexed: 11/17/2022]
Abstract
The history of the development of glucose sensors goes hand-in-hand with the history of the discovery and the engineering of glucose-sensing enzymes. Glucose oxidase (GOx) has been used for glucose sensing since the development of the first electrochemical glucose sensor. The principle utilizing oxygen as the electron acceptor is designated as the first-generation electrochemical enzyme sensors. With increasing demand for hand-held and cost-effective devices for the "self-monitoring of blood glucose (SMBG)", second-generation electrochemical sensor strips employing electron mediators have become the most popular platform. To overcome the inherent drawback of GOx, namely, the use of oxygen as the electron acceptor, various glucose dehydrogenases (GDHs) have been utilized in second-generation principle-based sensors. Among the various enzymes employed in glucose sensors, GDHs harboring FAD as the redox cofactor, FADGDHs, especially those derived from fungi, fFADGDHs, are currently the most popular enzymes in the sensor strips of second-generation SMBG sensors. In addition, the third-generation principle, employing direct electron transfer (DET), is considered the most elegant approach and is ideal for use in electrochemical enzyme sensors. However, glucose oxidoreductases capable of DET are limited. One of the most prominent GDHs capable of DET is a bacteria-derived FADGDH complex (bFADGDH). bFADGDH has three distinct subunits; the FAD harboring the catalytic subunit, the small subunit, and the electron-transfer subunit, which makes bFADGDH capable of DET. In this review, we focused on the two representative glucose sensing enzymes, fFADGDHs and bFADGDHs, by presenting their discovery, sources, and protein and enzyme properties, and the current engineering strategies to improve their potential in sensor applications.
Collapse
Affiliation(s)
- Junko Okuda-Shimazaki
- Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, USA
| | - Hiromi Yoshida
- Life Science Research Center and Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0793, Japan
| | - Koji Sode
- Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, USA.
| |
Collapse
|
17
|
Petraki Z, Droubogiannis S, Mylonaki K, Chlouverakis G, Plaitakis A, Spanaki C. Transgenic expression of the positive selected human GLUD2 gene improves in vivo glucose homeostasis by regulating basic insulin secretion. Metabolism 2019; 100:153958. [PMID: 31400387 DOI: 10.1016/j.metabol.2019.153958] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/24/2019] [Accepted: 08/04/2019] [Indexed: 12/19/2022]
Abstract
Glutamate dehydrogenase 1 (GDH1) contributes to glucose-stimulated insulin secretion in murine β-cells, but not to basic insulin release. The implications of these findings for human biology are unclear as humans have two GDH-specific enzymes: hGDH1 (GLUD1-encoded) and hGDH2 (GLUD2-encoded), a novel enzyme that is highly activated by ADP and L-leucine. Here we studied in vivo glucose homeostasis in transgenic (Tg) mice generated by inserting the GLUD2 gene and its putative regulatory elements into their genome. Using specific antibodies, we observed that hGDH2 was co-expressed with the endogenous murine GDH1 in pancreatic β-cells of Tg mice. Fasting blood glucose (FBG) levels were lower and of a narrower range in Tg (95% CI: 90.6-96.8 mg/dl; N = 26) than in Wt mice (95% CI: 136.2-151.4 mg/dl; N = 23; p < 0.0001), closely resembling those of healthy humans. GLUD2 also protected the host mouse from developing diabetes with advancing age. Tg animals maintained 2.6-fold higher fasting serum insulin levels (mean ± SD: 1.63 ± 0.15 ng/ml; N = 12) than Wt mice (0.63 ± 0.05 ng/ml; N = 12; p < 0.0001). Glucose loading (1 mg/g, given i.p.) induced comparable serum insulin increases in Tg and Wt mice, suggesting no significant GLUD2 effect on glucose-stimulated insulin release. L-leucine (0.25 mg/g given orally) induced a 2-fold increase in the serum insulin of the Wt mice, implying significant activation of the endogenous GDH1. However, L-leucine had little effect on the high insulin levels of the Tg mice, suggesting that, under the high ADP levels that prevail in β-cells in the fasting state, glutamate flux through hGDH2 is close to maximal. Hence, the present data, showing that GLUD2 expression in Tg mice improves in vivo glucose homeostasis by boosting fasting serum insulin levels, suggest that evolutionary adaptation of hGDH2 has enabled humans to achieve narrow-range euglycemia by regulating glutamate-mediated basal insulin secretion.
Collapse
Affiliation(s)
- Zoe Petraki
- Department of Neurology, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece
| | - Stavros Droubogiannis
- Department of Neurology, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece
| | - Konstantina Mylonaki
- Department of Neurology, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece
| | - Gregory Chlouverakis
- Department of Social Medicine, Biostatistics Lab, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece
| | - Andreas Plaitakis
- Department of Neurology, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece
| | - Cleanthe Spanaki
- Department of Neurology, School of Medicine, University of Crete, Voutes Place, 71500 Heraklion, Crete, Greece.
| |
Collapse
|
18
|
Abstract
D-danshensu (D-DSS), extracted from the plant Salvia miltiorrhiza (Danshen), is widely used to treat cardiovascular and cerebrovascular diseases. Here we engineered Escherichia coli strains to produce D-DSS from catechol, pyruvate and ammonia by one-pot biotransformation. Tyrosin-phenol lyase (TPL), L-amino acid deaminase (aadL), D-lactate dehydrogenase (ldhD) and glucose dehydrogenase (gdh) genes were overexpressed in Escherichia coli strain. First, the expression of genes was regulated by different copy number plasmids combination, the result of E. coli TALG6, with strong overexpression of TPL, aadL, ldhD and moderate overexpression of gdh, exhibited 253.7% increase D-DSS production compared to E. coli TALG1. Second, the optimum concentration of catechol was found to be 50 mM. Finally, a fed-batch biotransformation strategy was proposed, namely the amount of catechol was added to 50 mM every 2 h. The total production of D-DSS reached 55.35 mM within 14 h, which was 1.7 times that without feeding.
Collapse
Affiliation(s)
- Tianzhen Xiong
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Pu Jia
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Jing Jiang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Yajun Bai
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Tai-Ping Fan
- Department of Pharmacology, University of Cambridge, Cambridge CB2 1T, UK
| | - Xiaohui Zheng
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China.
| | - Yujie Cai
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
| |
Collapse
|
19
|
Hu FZ, Król JE, Tsai CHS, Eutsey RA, Hiller LN, Sen B, Ahmed A, Hillman T, Buchinsky FJ, Nistico L, Dice B, Longwell M, Horsey E, Ehrlich GD. Deletion of genes involved in the ketogluconate metabolism, Entner-Doudoroff pathway, and glucose dehydrogenase increase local and invasive virulence phenotypes in Streptococcus pneumoniae. PLoS One 2019; 14:e0209688. [PMID: 30620734 PMCID: PMC6324787 DOI: 10.1371/journal.pone.0209688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 12/10/2018] [Indexed: 11/18/2022] Open
Abstract
Streptococcus pneumoniae displays increased resistance to antibiotic therapy following biofilm formation. A genome-wide search revealed that SP 0320 and SP 0675 (respectively annotated as 5-keto-D-gluconate-5-reductase and glucose dehydrogenase) contain the highest degree of homology to CsgA of Myxococcus xanthus, a signaling factor that promotes cell aggregation and biofilm formation. Single and double SP 0320 and SP 0675 knockout mutants were created in strain BS72; however, no differences were observed in the biofilm-forming phenotypes of mutants compared to the wild type strain. Using the chinchilla model of otitis media and invasive disease, all three mutants exhibited greatly increased virulence compared to the wild type strain (increased pus formation, tympanic membrane rupture, mortality rates). The SP 0320 gene is located in an operon with SP 0317, SP 0318 and SP 0319, which we bioinformatically annotated as being part of the Entner-Doudoroff pathway. Deletion of SP 0317 also resulted in increased mortality in chinchillas; however, mutations in SP 0318 and SP 0319 did not alter the virulence of bacteria compared to the wild type strain. Complementing the SP 0317, SP 0320 and SP 0675 mutant strains reversed the virulence phenotype. We prepared recombinant SP 0317, SP 0318, SP 0320 and SP 0675 proteins and confirmed their functions. These data reveal that disruption of genes involved in the degradation of ketogluconate, the Entner-Doudoroff pathway, and glucose dehydrogenase significantly increase the virulence of bacteria in vivo; two hypothetical models involving virulence triggered by reduced in carbon-flux through the glycolytic pathways are presented.
Collapse
Affiliation(s)
- Fen Z. Hu
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America
- * E-mail: (FZH); (GDE)
| | - Jarosław E. Król
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Center for Advanced Microbial Processing, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Chen Hsuan Sherry Tsai
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Rory A. Eutsey
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States of America
| | - Luisa N. Hiller
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States of America
| | - Bhaswati Sen
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Center for Advanced Microbial Processing, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Azad Ahmed
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Center for Advanced Microbial Processing, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Todd Hillman
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Farrel J. Buchinsky
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Laura Nistico
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Bethany Dice
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Mark Longwell
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Edward Horsey
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
| | - Garth D. Ehrlich
- Center for Genomic Sciences, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Center for Advanced Microbial Processing, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, United States of America
- Center of Excellence in Biofilm Research, Allegheny Health Network, Pittsburgh, PA, United States of America
- * E-mail: (FZH); (GDE)
| |
Collapse
|
20
|
Suleman M, Yasmin S, Rasul M, Yahya M, Atta BM, Mirza MS. Phosphate solubilizing bacteria with glucose dehydrogenase gene for phosphorus uptake and beneficial effects on wheat. PLoS One 2018; 13:e0204408. [PMID: 30240432 PMCID: PMC6150522 DOI: 10.1371/journal.pone.0204408] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 09/04/2018] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to isolate, characterize and use phosphate solubilizing bacteria to enhance the bioavailability of insoluble Ca-phosphate for wheat plants. For this purpose, 15 phosphorus solubilizing bacteria (PSB) were isolated from wheat rhizospheric soils of Peshawar and southern Punjab region, Pakistan. These isolates were identified using light microscopy and 16S rRNA gene. Among the isolated bacteria, two strains (Pseudomonas sp. MS16 and Enterobacter sp. MS32) were the efficient P solubilizers based on their P solubilization activity determined qualitatively (solubilization index 3.2-5.8) as well as quantitatively (136-280 μg mL-1). These two strains produced indole-3-acetic acid (25.6-28.1 μg mL-1), gibberellic acid (2.5-11.8), solubilized zinc compounds (SI 2.8-3.3) and showed nitrogenase and 1-Aminocyclopropane-1-carboxylic acid deaminase activity in vitro. Phosphate solubilization activity of Pseudomonas sp. MS16 was further validated by amplification, sequencing and phylogenetic analysis of glucose dehydrogenase (gcd) gene (LT908484) responsible for P solubilization. Response Surface Methodology for large-scale production was used to find optimal conditions (Temperature 22.5°C, pH 7) for P solubilization. Glucose was found to support higher P solubilization in vitro. In an in vitro experiment, PSB treated wheat seedlings improved germination and seedling vigor (11% increases) as compared to un-inoculated control. Rhizoscanning of these seedlings showed an increase in various root growth parameters. Wheat inoculation with selected strain MS16 showed pronounced effect on grain yield in pot (38.5% increase) and field (17-18% increase) experiments compared to non-inoculated control. Root colonization by PSB through Florescent in situ Hybridization and Confocal Laser Scanning Microscopy confirmed their rhizosphere competence in soil. BOX-PCR confirmed the re-isolated colonies of Pseudomonas sp. MS16. The results indicated that gluconic acid producing Pseudomonas sp. MS16 from un-explored soils may be cost effective and environment friendly candidate to improve plant growth and phosphorous uptake by wheat plants.
Collapse
Affiliation(s)
- Muhammad Suleman
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Sumera Yasmin
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Maria Rasul
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Mahreen Yahya
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Babar Manzoor Atta
- Plant Breeding and Genetics Division, Nuclear Institute for Food and Agriculture (NIFA), Peshawar, Pakistan
| | - Muhammad Sajjad Mirza
- Soil and Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| |
Collapse
|
21
|
Abstract
Carbon nanotube (CNT)-cellulose pellicle was developed to create a conductive CNT network on 20 μm nanostructured cellulose film. The flexible and electrically conductive film was prepared by the modification of bacterial nanocellulose pellicle with multi-walled carbon nanotubes (MWCNTs). The composite film was further modified with redox enzymes including pyroquinoline quinone glucose dehydrogenase (PQQ-GDH) and bilirubin oxidase (BODx) functioning as the anodic and cathodic catalyst, respectively with glucose as the biofuel source. The enzyme functionalized MWCNT-cellulose based glucose/O2 biofuel cell system harnessed the biochemical energy of glucose via the oxidation of glucose and reduction of molecular oxygen to generate electrical power in the microwatt range. The biofuel cell system exhibited an open circuit voltage and power density of 470 mV and 46.25 μW/cm2, respectively, with a current density of 381 μA/cm2 in the presence of 25 mM glucose. At physiological glucose concentration, the biofuel cell exhibited an open circuit voltage and power density of 418 mV and 24.975 μW/cm2 respectively, with a current density of 293.75μA/cm2. As a result, we expect that this facile strategy to prepare flexible conductive bioelectrodes for the development of glucose biofuel cell system using synthesized bacterial nanocellulose crosslinked with MWCNTs and enzyme can be readily extended to diverse applications in enzymatic biofuel cell and biosensor technology.
Collapse
|
22
|
Yamashita Y, Suzuki N, Hirose N, Kojima K, Tsugawa W, Sode K. Mutagenesis Study of the Cytochrome c Subunit Responsible for the Direct Electron Transfer-Type Catalytic Activity of FAD-Dependent Glucose Dehydrogenase. Int J Mol Sci 2018; 19:ijms19040931. [PMID: 29561779 PMCID: PMC5979317 DOI: 10.3390/ijms19040931] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/09/2018] [Accepted: 02/17/2018] [Indexed: 11/19/2022] Open
Abstract
The FAD-dependent glucose dehydrogenase from Burkholderia cepacia (FADGDH) is a hetero-oligomeric enzyme that is capable of direct electron transfer (DET) with an electrode. The cytochrome c (cyt c) subunit, which possesses three hemes (heme 1, heme 2, and heme 3, from the N-terminal sequence), is known to enable DET; however, details of the electron transfer pathway remain unknown. A mutagenesis investigation of the heme axial ligands was carried out to elucidate the electron transfer pathway to the electron mediators and/or the electrode. The sixth axial ligand for each of the three heme irons, Met109, Met263, and Met386 were substituted with His. The catalytic activities of the wild-type (WT) and mutant enzymes were compared by investigating their dye-mediated dehydrogenase activities and their DET abilities toward the electrode. The results suggested that (1) heme 1 with Met109 as an axial ligand is mainly responsible for the electron transfer with electron acceptors in the solution, but not for the DET with the electrode; (2) heme 2 with Met263 is responsible for the DET-type reaction with the electrode; and (3) heme 3 with Met386 seemed to be the electron acceptor from the catalytic subunit. From these results, two electron transfer pathways were proposed depending on the electron acceptors. Electrons are transferred from the catalytic subunit to heme 3, then to heme 2, to heme 1 and, finally, to electron acceptors in solution. However, if the enzyme complex is immobilized on the electrode and is used as electron acceptors, electrons are passed to the electrode from heme 2.
Collapse
Affiliation(s)
- Yuki Yamashita
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan
| | - Nanoha Suzuki
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan
| | - Nana Hirose
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan
| | | | - Wakako Tsugawa
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan.
| | - Koji Sode
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan.
- Ultizyme International Ltd., Meguro, Tokyo 152-0013, Japan.
- Joint Department of Biomedical Engineering, The University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC 27599, USA.
| |
Collapse
|
23
|
Liu B, Yan C, Si W, Sun X, Lu X, Ansorge-Schumacher M, Schmidt OG. Ultralong-Discharge-Time Biobattery Based on Immobilized Enzymes in Bilayer Rolled-Up Enzymatic Nanomembranes. Small 2018; 14:e1704221. [PMID: 29424056 DOI: 10.1002/smll.201704221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/01/2018] [Indexed: 06/08/2023]
Abstract
Glucose biofuel cells (GBFCs) are highly promising power sources for implantable biomedical and consumer electronics because they provide a high energy density and safety. However, it remains a great challenge to combine their high power density with reliable long-term stability. In this study, a novel GBFC design based on the enzyme biocatalysts glucose dehydrogenase, diaphorase, and bilirubin oxidase immobilized in rolled-up titanium nanomembranes is reported. The setup delivers a maximum areal power density of ≈3.7 mW cm-2 and a stable power output of ≈0.8 mW cm-2 . The power discharges over 452 h, which is considerably longer than reported previously. These results demonstrate that the GBFC design is in principle a feasible and effective approach to solve the long-term discharge challenge for implantable biomedical device applications.
Collapse
Affiliation(s)
- Bo Liu
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Chenglin Yan
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
- Soochow Institute for Energy and Materials InnovationS, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China
| | - Wenping Si
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Xiaolei Sun
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Xueyi Lu
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | | | - Oliver G Schmidt
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| |
Collapse
|
24
|
Han L, Liang B, Song J, Liu A. Rational design of engineered microbial cell surface multi-enzyme co-display system for sustainable NADH regeneration from low-cost biomass. J Ind Microbiol Biotechnol 2018; 45:111-121. [PMID: 29322283 DOI: 10.1007/s10295-018-2002-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/22/2017] [Indexed: 12/28/2022]
Abstract
As an important cofactor, NADH is essential for most redox reactions and biofuel cells. However, supply of exogenous NADH is challenged, due to the low production efficiency and high cost of NADH regeneration system, as well as low stability of NADH. Here, we constructed a novel cell surface multi-enzyme co-display system with ratio- and space-controllable manner as exogenous NADH regeneration system for the sustainable NADH production from low-cost biomass. Dockerin-fused glucoamylase (GA) and glucose dehydrogenase (GDH) were expressed and assembled on the engineered bacterial surfaces, which displayed protein scaffolds with various combinations of different cohesins. When the ratio of GA and GDH was 3:1, the NADH production rate of the whole-cell biocatalyst reached the highest level using starch as substrate, which was three times higher than that of mixture of free enzymes, indicating that the highly ordered spatial organization of enzymes would promote reactions, due to the ratio of enzymes and proximity effect. To confirm performance of the established NADH regeneration system, the highly efficient synthesis of L-lactic acid (L-LA) was conducted by the system and the yield of L-LA (16 g/L) was twice higher than that of the mixture of free enzymes. The multi-enzyme co-display system showed good stability in the cyclic utilization. In conclusion, the novel sustainable NADH system would provide a cost-effective strategy to regenerate cofactor from low-cost biomass.
Collapse
Affiliation(s)
- Lei Han
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China.
| | - Bo Liang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao, 266101, China.
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China.
| | - Jianxia Song
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao, 266101, China
| | | |
Collapse
|
25
|
Lin C, Pratt B, Honikel M, Jenish A, Ramesh B, Alkhan A, La Belle JT. Toward the Development of a Glucose Dehydrogenase-Based Saliva Glucose Sensor Without the Need for Sample Preparation. J Diabetes Sci Technol 2018; 12. [PMID: 28627257 PMCID: PMC5761970 DOI: 10.1177/1932296817712526] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Strict glycemic control is known to be a vital key in the management of diabetes mellitus (DM). However, traditional methods face limitations in their efficacy due to the pain and invasiveness of needle pricking which often discourages DM patients from performing the required number of tests per day. Saliva glucose (SG) sensing has long been considered a noninvasive alternative to blood glucose monitoring for diabetes management, however the sample preparation and sensor detection limit have been deemed as challenges to overcome. Herein, we describe a preliminary clinical validation of a disposable SG sensor without any requirement for sample preparation. METHODS The sensor utilizes glucose dehydrogenase flavine-adenine dinucleotide (GDH-FAD) in conjunction with disposable screen printed electrodes to measure glucose levels in saliva collected directly from 9 healthy subjects. Cyclic voltammetry and amperometric-time (Amp-it) assays were used to develop calibration curves and test subjects. Sensor calibration was performed using simulated saliva at 6.5 pH and 37ºC. RESULTS The lower limit of detection was determined to be 0.11 mg/dL. A lag time of 15 minutes with a positive correlation between SG and BG levels was found, which agrees with literature results. The detected SG ranges from 2.38 to 3.40 mg/dL over a BG range of 90 to 143 mg/dL. CONCLUSION This is the first reported use of measuring SG with GDH-FAD without prior sample preparation. Upon optimization, the sensor has the potential to serve as a supplement to blood glucose monitoring.
Collapse
Affiliation(s)
- Chi Lin
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Breanna Pratt
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Mackenzie Honikel
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Alaina Jenish
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Bhavna Ramesh
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Amnah Alkhan
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Jeffrey T. La Belle
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
- School of Medicine, Mayo Clinic Arizona, Scottsdale, AZ, USA
- Jeffrey T. La Belle, PhD, Arizona State University, 550 E Orange St, Tempe, AZ 85287, USA.
| |
Collapse
|
26
|
Zhu Y, Wang Y, Xu J, Chen J, Wang L, Qi B. Enantioselective Biosynthesis of l-Phenyllactic Acid by Whole Cells of Recombinant Escherichia coli. Molecules 2017; 22:E1966. [PMID: 29140277 PMCID: PMC6150373 DOI: 10.3390/molecules22111966] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/06/2017] [Accepted: 11/06/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND l-Phenyllactic acid (l-PLA)-a valuable building block in the pharmaceutical and chemical industry-has recently emerged as an important monomer in the composition of the novel degradable biocompatible material of polyphenyllactic acid. However, both normally chemically synthesized and naturally occurring phenyllactic acid are racemic, and the product yields of reported l-PLA synthesis processes remain unsatisfactory. METHODS We developed a novel recombinant Escherichia coli strain, co-expressing l-lactate dehydrogenase (l-LDH) from Lactobacillus plantarum subsp. plantarum and glucose dehydrogenase (GDH) from Bacillus megaterium, to construct a recombinant oxidation/reduction cycle for whole-cell biotransformation of phenylpyruvic acid (PPA) into chiral l-PLA in an enantioselective and continuous manner. RESULTS During fed-batch bioconversion with intermittent PPA feeding, l-PLA yield reached 103.8 mM, with an excellent enantiomeric excess of 99.7%. The productivity of l-PLA was as high as 5.2 mM·h-1 per OD600 (optical density at 600 nm) of whole cells. These results demonstrate the efficient production of l-PLA by the one-pot biotransformation system. Therefore, this stereoselective biocatalytic process might be a promising alternative for l-PLA production.
Collapse
Affiliation(s)
- Yibo Zhu
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
- Key Laboratory of Food and Biotechnology of Suzhou, Changshu Institute of Technology, Changshu 215500, China.
| | - Ying Wang
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China.
| | - Jiayuzi Xu
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Jiahao Chen
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Limei Wang
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
- Key Laboratory of Food and Biotechnology of Suzhou, Changshu Institute of Technology, Changshu 215500, China.
| | - Bin Qi
- School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
- Key Laboratory of Food and Biotechnology of Suzhou, Changshu Institute of Technology, Changshu 215500, China.
| |
Collapse
|
27
|
Ding H, Gao F, Yu Y, Chen B. Biochemical and Computational Insights on a Novel Acid-Resistant and Thermal-Stable Glucose 1-Dehydrogenase. Int J Mol Sci 2017; 18:ijms18061198. [PMID: 28587256 PMCID: PMC5486021 DOI: 10.3390/ijms18061198] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 05/30/2017] [Accepted: 05/30/2017] [Indexed: 11/29/2022] Open
Abstract
Due to the dual cofactor specificity, glucose 1-dehydrogenase (GDH) has been considered as a promising alternative for coenzyme regeneration in biocatalysis. To mine for potential GDHs for practical applications, several genes encoding for GDH had been heterogeneously expressed in Escherichia coli BL21 (DE3) for primary screening. Of all the candidates, GDH from Bacillus sp. ZJ (BzGDH) was one of the most robust enzymes. BzGDH was then purified to homogeneity by immobilized metal affinity chromatography and characterized biochemically. It displayed maximum activity at 45 °C and pH 9.0, and was stable at temperatures below 50 °C. BzGDH also exhibited a broad pH stability, especially in the acidic region, which could maintain around 80% of its initial activity at the pH range of 4.0–8.5 after incubating for 1 hour. Molecular dynamics simulation was conducted for better understanding the stability feature of BzGDH against the structural context. The in-silico simulation shows that BzGDH is stable and can maintain its overall structure against heat during the simulation at 323 K, which is consistent with the biochemical studies. In brief, the robust stability of BzGDH made it an attractive participant for cofactor regeneration on practical applications, especially for the catalysis implemented in acidic pH and high temperature.
Collapse
Affiliation(s)
- Haitao Ding
- Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China.
| | - Fen Gao
- East China Sea Fisheries Research Institute, Shanghai 200090, China.
| | - Yong Yu
- Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China.
| | - Bo Chen
- Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China.
| |
Collapse
|
28
|
Ding J, Wu Y, You LL, Xu B, Ge LQ, Yang GQ, Wu JC. Jinggangmycin-suppressed reproduction in the small brown planthopper (SBPH), Laodelphax striatellus (Fallen), is mediated by glucose dehydrogenase (GDH). Pestic Biochem Physiol 2017; 139:73-78. [PMID: 28595925 DOI: 10.1016/j.pestbp.2017.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/27/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
The small brown planthopper (SBPH), Laodelphax striatellus (Fallen), is a serious pest insect of rice, wheat, and maize in China. SBPH not only sucks plant sap but also transmits plant disease viruses, causing serious damage. These viruses include rice striped virus disease (RSV disease), black streaked dwarf, and maize rough disease virus. SBPH outbreaks are related to the overuse of pesticides in China. Some pesticides, such as triazophos, stimulate the reproduction of SBPH, but an antibiotic fungicide jinggangmycin (JGM) suppresses its reproduction. However, mechanisms of decreased reproduction of SBPH induced by JGM remain unclear. The present findings show that JGM suppressed reproduction of SBPH (↓approximately 35.7%) and resulted in the down-regulated expression of glucose dehydrogenase (GDH). GDH-silenced control females (control+dsGDH) show that the number of eggs laid was reduced by 48.6% compared to control females. Biochemical tests show that the total lipid and fatty acid contents in JGM-treated and control+dsGDH females decreased significantly. Thus, we propose that the suppression of reproduction in SBPH induced by JGM is mediated by GDH via metabolic pathways.
Collapse
Affiliation(s)
- Jun Ding
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - You Wu
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Lin-Lin You
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Bin Xu
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Lin-Quan Ge
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Guo-Qing Yang
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Jin-Cai Wu
- School of Plant Protection, Yangzhou University, Yangzhou 225009, China.
| |
Collapse
|
29
|
Liu ZQ, Dong SC, Yin HH, Xue YP, Tang XL, Zhang XJ, He JY, Zheng YG. Enzymatic synthesis of an ezetimibe intermediate using carbonyl reductase coupled with glucose dehydrogenase in an aqueous-organic solvent system. Bioresour Technol 2017; 229:26-32. [PMID: 28092733 DOI: 10.1016/j.biortech.2016.12.098] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/23/2016] [Accepted: 12/24/2016] [Indexed: 06/06/2023]
Abstract
(4S)-3-[(5S)-5-(4-Fluorophenyl)-5-hydroxypentanoyl]-4-phenyl-1,3-oxazolidin-2-one ((S)-ET-5) is an important chiral intermediate in the synthesis of chiral side chain of ezetimibe. Recombinant Escherichia coli expressing carbonyl reductase (CBR) was successfully constructed in this study. The total E. coli biomass and the specific activity of recombinant CBR in 5L fermenter culture were 10.9gDCWL-1 and 14900.3Ug-1DCW, respectively. The dual-enzyme coupled biocatalytic process in an aqueous-organic biphasic solvent system was first constructed using p-xylene as the optimal organic phase under optimized reaction conditions, and 150gL-1 (4S)-3-[5-(4-fluorophenyl)-1,5-dioxophentyl]-4-phenyl-1,3-oxazolidin-2-one (ET-4) was successfully converted to (S)-ET-5 with a conversion of 99.1% and diastereomeric excess of 99% after 24-h, which are the highest values reported to date for the production of (S)-ET-5.
Collapse
Affiliation(s)
- Zhi-Qiang Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Si-Chuan Dong
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Huan-Huan Yin
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Ya-Ping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xiao-Ling Tang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xiao-Jian Zhang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Jun-Yao He
- School of Pharmaceutical Engineering, Zhejiang Pharmaceutical College, Ningbo 315100, PR China
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China.
| |
Collapse
|
30
|
Hu X, Liu L, Chen D, Wang Y, Zhang J, Shao L. Co-expression of the recombined alcohol dehydrogenase and glucose dehydrogenase and cross-linked enzyme aggregates stabilization. Bioresour Technol 2017; 224:531-535. [PMID: 27838320 DOI: 10.1016/j.biortech.2016.10.076] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/22/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
As the key chiral precursor of Crizotinib (S)-1-(2,6-dichloro-3-fluorophenyl) phenethyl alcohol can be prepared from 1-(2,6-dichloro-3-fluorophenyl) acetophenone by the reductive coupling reactions of alcohol dehydrogenase (ADH) and glucose dehydrogenases (GDH). In this work the heterologous expression plasmids harbouring the encoding genes of ADH and GDH were constructed respectively and co-expressed in the same E. coli strain. After optimization, a co-cross-linked enzyme aggregates (co-CLEAs) of both ADH and GDH were prepared from crude enzyme extracts by cross-linking with the mass ratio of Tween 80, glutaraldehyde and total protein (0.6:1:2) which rendered immobilized biocatalysts that retained 81.90% (ADH) and 40.29% (GDH) activity retention. The ADH/GDH co-CLEAs show increased thermal stability and pH stability compared to both enzymes. The ADH/GDH co-CLEAs also show 80% (ADH) and 87% (GDH) residual activity after seven cycles of repeated use. These results make the ADH/GDH co-CLEAs a potential biocatalyst for the industrial preparation of (S)-1-(2,6-dichloro-3-fluorophenyl) phenethyl alcohol.
Collapse
Affiliation(s)
- Xiaozhi Hu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 285 Gebaini Rd., Shanghai 200040, China; School of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Liqin Liu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 285 Gebaini Rd., Shanghai 200040, China
| | - Daijie Chen
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 285 Gebaini Rd., Shanghai 200040, China
| | - Yongzhong Wang
- School of Life Sciences, Collaborative Innovation Center of Modern Bio-manufacture, Anhui University, Hefei 230039, China
| | - Junliang Zhang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 285 Gebaini Rd., Shanghai 200040, China
| | - Lei Shao
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, 285 Gebaini Rd., Shanghai 200040, China.
| |
Collapse
|
31
|
Yang X, Mu X, Nie Y, Xu Y. [High efficient co-expression of leucine dehydrogenase and glucose dehydrogenase in Escherichia coli]. Wei Sheng Wu Xue Bao 2016; 56:1709-1718. [PMID: 29741833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Different co-expression strategies to express leucine dehydrogenase and glucose dehydrogenase in E. coli were done to observe the effect of expression of different enzyme. A recombinant strain with two high enzyme activities was built for efficiently asymmetric synthesis of L-tert-leucine. METHODS The leucine dehydrogenase (ldh) from Bacillus cereus and glucose dehydrogenase (gdh) from Bacillus sp. were co-expressed by three different strategies, including co-expressing two genes in single vector, co-expressing two genes in two vectors and expressing fusion protein. The catalytic efficiencies of recombinant strains with different enzyme activity ratio in different modes of biocatalyst were compared to produce L-tert-leucine from its corresponding α-keto acids. RESULTS Different co-expression strategies displayed a slight impact on leucine dehydrogenase expression, whereas, a greater impact on glucose dehydrogenase. All the activity of leucine dehydrogenase was normally expressed, but the fusion proteins lost the activity of glucose dehydrogenase. Besides, the activity of glucose dehydrogenase was also totally inhibited when the 6-histidine tag was fused at C termini, which indicated the additional 6-histidine tag considerately depressed the glucose dehydrogenase activity. After optimization of expression, three recombinant strains exhibiting high enzyme activity and different enzyme activity ratio were used to synthesis L-tert-leucine in the mode of cell-free extracts and whole-cell. Result displayed a great influence on the catalytic efficiencies resulted from the mode of catalyst and enzyme activity. When the cell-free crude culture broth of E. coli BL21/pET28a-L-SD-AS-G coexpressing two genes in single vector was used as biocatalyst, 15 g/L cell loading and 0.1 mmol/L NAD+ were enough to completely transform 0.5 mol/L trimethylpyruvate into L-tert-leucine. CONCLUSION The recombinant strain with high activities of leucine dehydrogenase and glucose dehydrogenase was achieved by co-expressing two genes in single vector without histidine tag in E. coli and L-tert-leucine was efficiently produced with this recombinant strain.
Collapse
|
32
|
Gao F, Ding H, Xu X, Zhao Y. A self-sufficient system for removal of synthetic dye by coupling of spore-displayed triphenylmethane reductase and glucose 1-dehydrogenase. Environ Sci Pollut Res Int 2016; 23:21319-21326. [PMID: 27502455 DOI: 10.1007/s11356-016-7330-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 07/26/2016] [Indexed: 06/06/2023]
Abstract
Biodegradation of triphenylmethane dyes by microorganisms is hampered by the transport barrier imposed by cell membranes. On the other hand, cell-free systems using enzyme-based biodegradation strategy are costly. Therefore, an efficient and inexpensive approach circumventing these problems is highly desirable. Here, we constructed a self-sufficient system for synthetic dye removal by coupling of spore surface-displayed triphenylmethane reductase (TMR) and glucose 1-dehydrogenase (GDH) for the first time. Display of both TMR and GDH significantly enhanced their stability under conditions of extreme pH and temperature. These engineered spores also exhibited more robust long-term stability than their purified counterparts. Furthermore, we observed that a high ratio of spore-displayed GDH is necessary for high dye degradation efficiency. These results indicate that this continuous dye removal system with cofactor regeneration offers a promising solution for dye biodegradation applications.
Collapse
Affiliation(s)
- Fen Gao
- College of Life Science, Zhejiang University, Hangzhou, 310058, China
| | - Haitao Ding
- Polar Research Institute of China, Shanghai, 200136, China
| | - Xiaohong Xu
- College of Life Science, Zhejiang University, Hangzhou, 310058, China
| | - Yuhua Zhao
- College of Life Science, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
33
|
Jiang J, Zhang R, Zhou X, Li K, Li J, Li Y, Xu Y. [Efficient biosynthesis of (S)-1-phenyl-1,2-ethanediol catalyzed by (S)-carbonyl reductase Ⅱ and glucose dehydrogenase]. Wei Sheng Wu Xue Bao 2016; 56:1647-1655. [PMID: 29741827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To realize efficient biosynthesis of 2-hydroxyacetophenone to (S)-1-phenyl-1,2-ethanediol, we designed a co-expression system containing Candida parapsilosis CCTCC M203011 (S)-carbonyl reductase Ⅱ (SCRⅡ) and Bacillus sp. YX-1 glucose dehydrogenase (GDH) in Escherichia coli BL21(DE3), based on the optimal ratio between the specific activities of the two enzymes. METHODS The enzymes SCRⅡ and GDH were purified from their corresponding recombinant E. coli strains. When the purified SCRⅡ and GDH were used for the reduction of 2-hydroxyacetophenone to (S)-1-phenyl-1,2-ethanediol, the optimal ratio between their specific activities, the optimal temperature and pH were determined. Based on above results, a co-expression system E. coli BL21(DE3)/S-SD-AS-G harboring SCRⅡ and GDH was constructed. RESULTS SCRⅡ and GDH exhibited specific activities of 1.3 U/mg and 13.5 U/mg. When the total enzyme activity was 1 U, the optimal ratio of their activities is between 1:1 and 5:1, and the optimal temperature and pH are 30℃ and 7.0, respectively. So we designed a co-expression system E. coli BL21/S-SD-AS-G, in which the ratio of the SCRⅡ and GDH genes is 1:1. The specific activities of SCRⅡ and GDH are 0.76 U/mg and 0.73 U/mg in the cell-free extracts of E. coli BL21(DE3)/S-SD-AS-G, respectively. The ratio between SCRⅡ and GDH activity is 1:1. Under the optimal conditions, the system showed excellent performance to produce (S)-1-phenyl-1,2-ethanediol with an optical purity and a yield both over 99% during the reduction of 2-hydroxyacetophenone. With respect to the recombinant E. coli BL21(DE3)/pET-SCRⅡ, the co-expression system obviously improved the yield of (S)-1-phenyl-1,2-ethanediol and reduced biotransformation time from 24 h to 13 h. CONCLUSION This work provides the research foundation on the construction of a co-expression system containing a target chiral catalyst and a cofactor-regeneration enzyme for efficient chiral biosynthesis based on the optimal ratio of SCRⅡ and GDH activities.
Collapse
|
34
|
Yang M, Wang C, Wu Z, Yu T, Sun H, Liu J. [Phosphorus dissolving capability, glucose dehydrogenase gene expression and activity of two phosphate solubilizing bacteria]. Wei Sheng Wu Xue Bao 2016; 56:651-663. [PMID: 29717855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To identify the function of glucose dehydrogenase (GDH) and gene expression level in the process of solubilizing phosphorus. METHODS Phosphate solubilizing bacteria (PSB) were isolated and purified by soluble phosphorus circle method, and identified by Vitek 2 system and 16S rRNA sequence. The phosphate solubilization capacity and GDH activity of PSB were determined. GDH genes were cloned by PCR and the relative expression level of both genes under different conditions were determined by real-time quantitative PCR. RESULTS Two PSB were identified as Pseudomonas sp. and Enterobacter sp. and the highest phosphorus solubilizing capability was 558 μg/mL for the former and 478 μg/mL for the latter. GDH genes of the two bacteria were cloned and the fragments were 2007 bp and 2066 bp. Different GDH activity and GDH gene expression were cultivated under the condition of different phosphorus sources and pH value. GDH gene expression of strain wj1 was higher than the other under high phosphorus, and the result was opposite under phosphorus stress. However, GDH gene expression of strain wj3 was lower in all phosphorus levels. The expression of GDH gene and the change of the enzyme activity were not obviously related with phosphorus solubilizing capability for strain wj3. CONCLUSION There were different characteristics of GDH activity and GDH gene expression in two isolated strains that have different phosphate solubilizing mechanisms.
Collapse
|
35
|
Ertek B, Dilgin Y. Photoamperometric flow injection analysis of glucose based on dehydrogenase modified quantum dots-carbon nanotube nanocomposite electrode. Bioelectrochemistry 2016; 112:138-44. [PMID: 26944347 DOI: 10.1016/j.bioelechem.2016.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 02/15/2016] [Accepted: 02/23/2016] [Indexed: 12/15/2022]
Abstract
In this work, a core-shell quantum dot (QD, ZnS-CdS) was electrodeposited onto multiwalled carbon nanotube modified glassy carbon electrode (ZnS-CdS/MWCNT/GCE) and following glucose dehydrogenase (GDH) was immobilized onto QD modified electrode. The proposed electrode (GDH/ZnS-CdS/MWCNT/GCE) was effectively used for the photoelectrochemical biosensing of glucose in flow injection analysis (FIA) system using a home-made flow cell. Results from cyclic voltammetric and FI amperometric measurements have revealed that GDH/ZnS-CdS/MWCNT/GCE is capable of signaling photoelectrocatalytic activity toward NADH when the surface of enzyme modified electrode was irradiated with a light source (250W Halogen lamp). Thus, photoelectrochemical biosensing of glucose was monitored by recording current-time curve of enzymatically produced NADH at optimized conditions. The biosensor response was found linear over the range 0.010-2.0mM glucose with detection limits of 6.0 and 4.0μM for amperometric and photoamperometric methods, respectively. The relative standard deviations (n=5) for 0.5mM glucose were 5.8% and 3.8% for photoamperometric and amperometric results, respectively. The photoelectrochemical biosensor was successfully applied to the real samples. The results with this biosensor showed good selectivity, repeatability and sensitivity for monitoring glucose in amperometric and photoamperometric FIA studies.
Collapse
Affiliation(s)
- Bensu Ertek
- Çanakkale Onsekiz Mart University, Science and Art Faculty, Department of Chemistry, 17020 Çanakkale, Turkey
| | - Yusuf Dilgin
- Çanakkale Onsekiz Mart University, Science and Art Faculty, Department of Chemistry, 17020 Çanakkale, Turkey.
| |
Collapse
|
36
|
Peltier-Pain P, Singh S, Thorson JS. Characterization of Early Enzymes Involved in TDP-Aminodideoxypentose Biosynthesis en Route to Indolocarbazole AT2433. Chembiochem 2015; 16:2141-6. [PMID: 26289554 PMCID: PMC4598305 DOI: 10.1002/cbic.201500365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Indexed: 01/29/2023]
Abstract
The characterization of TDP-α-D-glucose dehydrogenase (AtmS8), TDP-α-D-glucuronic acid decarboxylase (AtmS9), and TDP-4-keto-α-D-xylose 2,3-dehydratase (AtmS14), involved in Actinomadura melliaura AT2433 aminodideoxypentose biosynthesis, is reported. This study provides the first biochemical evidence that both deoxypentose and deoxyhexose biosynthetic pathways share common strategies for sugar 2,3-dehydration/reduction and implicates the sugar nucleotide base specificity of AtmS14 as a potential mechanism for sugar nucleotide commitment to secondary metabolism. In addition, a re-evaluation of the AtmS9 homologue involved in calicheamicin aminodeoxypentose biosynthesis (CalS9) reveals that CalS9 catalyzes UDP-4-keto-α-D-xylose as the predominant product, rather than UDP-α-D-xylose as previously reported. Cumulatively, this work provides additional fundamental insights regarding the biosynthesis of novel pentoses attached to complex bacterial secondary metabolites.
Collapse
Affiliation(s)
- Pauline Peltier-Pain
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI, 53705, USA
- Glycom A/S, Denmark
| | - Shanteri Singh
- Center for Pharmaceutical Research and Innovation, Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA
| | - Jon S Thorson
- Center for Pharmaceutical Research and Innovation, Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 789 South Limestone Street, Lexington, KY, 40536, USA.
| |
Collapse
|
37
|
Naveed M, Sohail Y, Khalid N, Ahmed I, Mumtaz AS. Evaluation of Glucose Dehydrogenase and Pyrroloquinoline Quinine (pqq) Mutagenesis that Renders Functional Inadequacies in Host Plants. J Microbiol Biotechnol 2015; 25:1349-1360. [PMID: 25839331 DOI: 10.4014/jmb.1501.01075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The rhizospheric zone abutting plant roots usually clutches a wealth of microbes. In the recent past, enormous genetic resources have been excavated with potential applications in host plant interaction and ancillary aspects. Two Pseudomonas strains were isolated and identified through 16S rRNA and rpoD sequence analyses as P. fluorescens QAU67 and P. putida QAU90. Initial biochemical characterization and their root-colonizing traits indicated their potential role in plant growth promotion. Such aerobic systems, involved in gluconic acid production and phosphate solubilization, essentially require the pyrroloquinoline quinine (PQQ)- dependent glucose dehydrogenase (GDH) in the genome. The PCR screening and amplification of GDH and PQQ and subsequent induction of mutagenesis characterized their possible role as antioxidants as well as in growth promotion, as probed in vitro in lettuce and in vivo in rice, bean, and tomato plants. The results showed significant differences (p < or = 0.05) in parameters of plant height, fresh weight, and dry weight, etc., deciphering a clear and in fact complementary role of GDH and PQQ in plant growth promotion. Our study not only provides direct evidence of the in vivo role of GDH and PQQ in host plants but also reveals their functional inadequacy in the event of mutation at either of these loci.
Collapse
Affiliation(s)
- Muhammad Naveed
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Younas Sohail
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Nauman Khalid
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
| | - Iftikhar Ahmed
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre (NARC), Islamabad 45500, Pakistan
| | - Abdul Samad Mumtaz
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
| |
Collapse
|
38
|
Pirog TP, Shevchuk TA, Beregova KA, Kudrya NV. [PECULIARITIES OF GLUCOSE AND GLYCEROL METABOLISM IN Nocardia vaccinii IMB B-7405]. Ukr Biochem J 2015; 87:66-75. [PMID: 26255340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
It has been established that in cells of Nocardia vaccinii IMB B-7405 (surfactant producer) glucose catabolism is performed through pentose phosphate cycle as well as through gluconate (activity of NAD+-dependent glucose-6-phosphate dehydrogenase and FAD+-dependent glucose dehydrogenase 835 ± 41 and 698 ± 35 nmol.min-1.mg-1 of protein respectively). 6-Phosphogluconate formed in the gluconokinase reaction is involved in the pentose phosphate cycle (activity of constitutive NADP+-dependent 6-phosphogluconate dehydrogenase 357 ± 17 nmol.min-1.mg-1 of protein). Glycerol catabolism to dihydroxyacetonephosphate (the intermediate of glycolysis) may be performed in two ways: through glycerol-3-phosphate (glycerol kinase activity 244 ± 12 nmol.min-1.mg-1 of protein) and through dihydroxyacetone. Replenishment of the C4-dicarboxylic acids pool in N. vaccinii IMV B-7405 grown on glucose and glycerol occurs in the phosphoenolpyruvate(PEP)carboxylase reaction (714-803 nmol.min-1.mg-1 of protein). 2-Oxoglutarate was involved in tricarboxylic acid cycle by alternate pathway with the participation of 2-oxoglutarate synthase. The observed activity of both key enzymes of gluconeogenesis (PEP-carboxykinase and PEP-synthase), trehalose phosphate synthase and NADP+-dependent glutamate dehydrogenase confirmed the ability of IMV B-7405 strain to the synthesis of surface active glycoand aminolipids, respectively.
Collapse
|
39
|
Xue Q, Wei Z, Sun W, Cui F, Yu S, Zhou Q, Liu J. 2-Keto-D-gluconate-yielding membrane-bound D-glucose dehydrogenase from Arthrobacter globiformis C224: purification and characterization. Molecules 2015; 20:846-62. [PMID: 25580683 PMCID: PMC6272208 DOI: 10.3390/molecules20010846] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/04/2015] [Indexed: 12/05/2022] Open
Abstract
Glucose dehydrogenase (GlcDH) is the rate-limiting catalyst for microbial conversion of glucose to the important organic acid 2-ketogluconic acid (2KGlcA). In this study, a d-glucose dehydrogenase was purified from the industrial 2KGlcA producer Arthrobacter globiformis C224. After four purification steps, the GlcDH was successfully purified over 180 folds and specific activity of 88.1 U/mg. A single protein band of 87 kDa was detected by SDS-PAGE. The purified GlcDH had the broad substrate specificity with the Km values for d-glucose, d-xylose, d-galactose and maltose of 0.21 mM, 0.34 mM, 0.46 mM and 0.59 mM, respectively. The kinetic studies proved that A. globiformis GlcDH followed the ping-pong kinetic mechanism. The GlcDH showed an optimum catalytic activity at pH 5.0 and 45 °C with the stable activity at temperature of 20–40 °C and pH of 6.0–7.0. Organic solvents, metal ions or EDTA could significantly influence the GlcDH activity to different degrees.
Collapse
Affiliation(s)
- Qing Xue
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Zhuan Wei
- Parchn Sodium Isovitamin C Co. Ltd, Dexing 334221, China.
| | - Wenjing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Fengjie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Silian Yu
- Parchn Sodium Isovitamin C Co. Ltd, Dexing 334221, China.
| | - Qiang Zhou
- Parchn Sodium Isovitamin C Co. Ltd, Dexing 334221, China.
| | - Jingze Liu
- College of Life Science, Hebei Normal University, Shijiazhuang 050016, China.
| |
Collapse
|
40
|
Muramatsu H, Mihara H, Yasuda M, Ueda M, Kurihara T, Esaki N. Enzymatic Synthesis ofL-Pipecolic Acid by Δ1-Piperideine-2-carboxylate Reductase fromPseudomonas putida. Biosci Biotechnol Biochem 2014; 70:2296-8. [PMID: 16960365 DOI: 10.1271/bbb.60125] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
L-Pipecolic acid is a chiral pharmaceutical intermediate. An enzymatic system for the synthesis of L-pipecolic acid from L-lysine by commercial L-lysine alpha-oxidase from Trichoderma viride and an extract of recombinant Escherichia coli cells coexpressing Delta1-piperideine-2-carboxylate reductase from Pseudomonas putida and glucose dehydrogenase from Bacillus subtilis is described. A laboratory-scale process provided 27 g/l of L-pipecolic acid in 99.7% e.e.
Collapse
Affiliation(s)
- Hisashi Muramatsu
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan
| | | | | | | | | | | |
Collapse
|
41
|
Basner A, Antranikian G. Isolation and biochemical characterization of a glucose dehydrogenase from a hay infusion metagenome. PLoS One 2014; 9:e85844. [PMID: 24454935 PMCID: PMC3891874 DOI: 10.1371/journal.pone.0085844] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 12/02/2013] [Indexed: 11/19/2022] Open
Abstract
Glucose hydrolyzing enzymes are essential to determine blood glucose level. A high-throughput screening approach was established to identify NAD(P)-dependent glucose dehydrogenases for the application in test stripes and the respective blood glucose meters. In the current report a glucose hydrolyzing enzyme, derived from a metagenomic library by expressing recombinant DNA fragments isolated from hay infusion, was characterized. The recombinant clone showing activity on glucose as substrate exhibited an open reading frame of 987 bp encoding for a peptide of 328 amino acids. The isolated enzyme showed typical sequence motifs of short-chain-dehydrogenases using NAD(P) as a co-factor and had a sequence similarity between 33 and 35% to characterized glucose dehydrogenases from different Bacillus species. The identified glucose dehydrogenase gene was expressed in E. coli, purified and subsequently characterized. The enzyme, belonging to the superfamily of short-chain dehydrogenases, shows a broad substrate range with a high affinity to glucose, xylose and glucose-6-phosphate. Due to its ability to be strongly associated with its cofactor NAD(P), the enzyme is able to directly transfer electrons from glucose oxidation to external electron acceptors by regenerating the cofactor while being still associated to the protein.
Collapse
Affiliation(s)
- Alexander Basner
- Institute of Technical Microbiology, Hamburg University of Technology, Hamburg, Germany
| | - Garabed Antranikian
- Institute of Technical Microbiology, Hamburg University of Technology, Hamburg, Germany
- * E-mail:
| |
Collapse
|
42
|
Liang B, Lang Q, Tang X, Liu A. Simultaneously improving stability and specificity of cell surface displayed glucose dehydrogenase mutants to construct whole-cell biocatalyst for glucose biosensor application. Bioresour Technol 2013; 147:492-498. [PMID: 24012845 DOI: 10.1016/j.biortech.2013.08.088] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 08/13/2013] [Accepted: 08/14/2013] [Indexed: 06/02/2023]
Abstract
The improved stability and substrate specificity of cell surface displayed glucose dehydrogenase (GDH) mutants by replacing four amino acids from Bacillus subtilis by using site-directed mutagenesis was systematically investigated. A series of mutated GDHs including E170R/Q252L, V149K/E170R/Q252L, E170R/Q252L/G259A and V149K/E170R/Q252L/G259A, were fused to the ice nucleation protein for displaying on cell surface of Eschericia coli. Q252L/E170R/V149K, Q252L/E170R/G259A and Q252L/E170R/V149K/G259A variants were found stable at a wide pH range and shown excellent thermostability. Especially, the Q252L/E170R/V149K/G259A mutant showed half-life of ~3.8days at 70 °C. Q252L/E170R/V149K/G259A variant exhibited the narrowest substrate specificity for d-glucose. The whole cell displayed GDH mutant could be cultured in a large scale with excellent enzyme activity and productivity. In addition, a sensitive and stable electrochemical glucose biosensor can be prepared using the GDH-mutant bacteria modified electrode. Thus, the whole cell biocatalysts are promising candidates for exploitation in a wide range of industrial applications.
Collapse
Affiliation(s)
- Bo Liang
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, China
| | - Qiaolin Lang
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, China
| | - Xiangjiang Tang
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, China
| | - Aihua Liu
- Laboratory for Biosensing, Qingdao Institute of Bioenergy & Bioprocess Technology, and Key Laboratory of Bioenergy, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, China.
| |
Collapse
|
43
|
Zheng M, Su Z, Ji X, Ma G, Wang P, Zhang S. Magnetic field intensified bi-enzyme system with in situ cofactor regeneration supported by magnetic nanoparticles. J Biotechnol 2013; 168:212-7. [PMID: 23756150 DOI: 10.1016/j.jbiotec.2013.05.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 05/29/2013] [Accepted: 05/30/2013] [Indexed: 02/07/2023]
Abstract
Efficient dynamic interactions among cofactor, enzymes and substrate molecules are of primary importance for multi-step enzymatic reactions with in situ cofactor regeneration. Here we showed for the first time that the above dynamic interactions could be significantly intensified by exerting an external alternating magnetic field on magnetic nanoparticles-supported multi-enzymatic system so that the inter-particle collisions due to Brownian motion of nanoparticles could be improved. To that end, a multienzyme system including glutamate dehydrogenase (GluDH), glucose dehydrogenase (GDH) and cofactor NAD(H) were separately immobilized on silica coated Fe3O4 magnetic nanoparticles with an average diameter of 105 nm, and the effect of magnetic field strength and frequency on the kinetics of the coupled bi-enzyme reaction was investigated. It was found that at low magnetic field frequency (25 Hz and 100 Hz), increasing magnetic field strength from 9.8 to 161.1 Gs led to only very slight increase in reaction rate of the coupled bi-enzyme reaction expressed by glucose consumption rate. At higher magnetic field of 200 Hz and 500 Hz, reaction rate increased significantly with increase of magnetic field strength. When the magnetic field frequency was kept at 500 Hz, the reaction rate increased from 3.89 μM/min to 8.11 μM/min by increasing magnetic field strength from 1.3 to 14.2 Gs. The immobilized bi-enzyme system also showed good reusability and stability in the magnetic field (500 Hz, 14.2 Gs), that about 46% of original activity could be retained after 33 repeated uses, accounting for totally 34 days continuous operation. These results demonstrated the feasibility in intensifying molecular interactions among magnetic nanoparticle-supported multienzymes by using nano-magnetic stirrer for efficient multi-step transformations.
Collapse
Affiliation(s)
- Muqing Zheng
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | | | |
Collapse
|
44
|
Zhang B, Zhang R, Wang L, Xu Y. [Gene cloning and characterization of a solvent-resistant glucose dehydrogenase from Bacillus sp. YX-1]. Wei Sheng Wu Xue Bao 2013; 53:561-568. [PMID: 24028058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE A gene encoding solvent-resistant glucose dehydrogenase was cloned from Bacillus sp. YX-1 and expressed in Escherichia coli. The recombinant enzyme was then characterized. METHODS The glucose dehydrogenase gene was amplified from Bacillus sp. YX-1 genome according to its conserved sequences in Bacillus sp. The recombinant enzyme was over-expressed in E. coli and purified by HisTrap HP affinity chromatography. The purified enzyme were characterized. RESULTS The glucose dehydrogenase gene contains an open reading frame of 786 bp encoding 261 amino acids. The maximum activity was observed at 45 degrees C and pH 8.0. The recombinant enzyme was highly resistant to several organic solvents. More than 90% of the activity was maintained when the enzyme was incubated in 50% cyclohexane, octane, decane at home temperature for 1 h. In addition, the enzyme displayed broad substrate spectrum and has catalytic activity for several sugars to afford reduced coenzymes. It exhibits similar capability to regenerate either NADH or NADPH with specific activity of 8.37 U/mg and 8.62 U/mg for NAD+ and NADP+. CONCLUSION The organic solvent-tolerant glucose dehydrogenase was explored successfully on the basis of bioinformatics analysis. The work supplied a new biocatalyst for the cofactor-regeneration during the reaction in organic phases catalyzed by oxidoreductases.
Collapse
Affiliation(s)
- Botao Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | | | | | | |
Collapse
|
45
|
Akita H, Suzuki H, Doi K, Ohshima T. Efficient synthesis of D-branched-chain amino acids and their labeled compounds with stable isotopes using D-amino acid dehydrogenase. Appl Microbiol Biotechnol 2013; 98:1135-43. [PMID: 23661083 DOI: 10.1007/s00253-013-4902-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 03/31/2013] [Accepted: 04/03/2013] [Indexed: 02/07/2023]
Abstract
D-Branched-chain amino acids (D-BCAAs) such as D-leucine, D-isoleucine, and D-valine are known to be peptide antibiotic intermediates and to exhibit a variety of bioactivities. Consequently, much effort is going into achieving simple stereospecific synthesis of D-BCAAs, especially analogs labeled with stable isotopes. Up to now, however, no effective method has been reported. Here, we report the establishment of an efficient system for enantioselective synthesis of D-BCAAs and production of D-BCAAs labeled with stable isotopes. This system is based on two thermostable enzymes: D-amino acid dehydrogenase, catalyzing NADPH-dependent enantioselective amination of 2-oxo acids to produce the corresponding D-amino acids, and glucose dehydrogenase, catalyzing NADPH regeneration from NADP(+) and D-glucose. After incubation with the enzymes for 2 h at 65°C and pH 10.5, 2-oxo-4-methylvaleric acid was converted to D-leucine with an excellent yield (>99 %) and optical purity (>99 %). Using this system, we produced five different D-BCAAs labeled with stable isotopes: D-[1-(13)C,(15)N]leucine, D-[1-(13)C]leucine, D-[(15)N]leucine, D-[(15)N]isoleucine, and D-[(15)N]valine. The structure of each labeled D-amino acid was confirmed using time-of-flight mass spectrometry and nuclear magnetic resonance analysis. These analyses confirmed that the developed system was highly useful for production of D-BCAAs labeled with stable isotopes, making this the first reported enzymatic production of D-BCAAs labeled with stable isotopes. Our findings facilitate tracer studies investigating D-BCAAs and their derivatives.
Collapse
Affiliation(s)
- Hironaga Akita
- Applied Molecular Microbiology and Biomass Chemistry, Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
| | | | | | | |
Collapse
|
46
|
Rao SAK, Carolan JC, Wilkinson TL. Proteomic profiling of cereal aphid saliva reveals both ubiquitous and adaptive secreted proteins. PLoS One 2013; 8:e57413. [PMID: 23460852 PMCID: PMC3584018 DOI: 10.1371/journal.pone.0057413] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 01/22/2013] [Indexed: 12/29/2022] Open
Abstract
The secreted salivary proteins from two cereal aphid species, Sitobion avenae and Metopolophium dirhodum, were collected from artificial diets and analysed by tandem mass spectrometry. Protein identification was performed by searching MS data against the official protein set from the current pea aphid (Acyrthosiphon pisum) genome assembly and revealed 12 and 7 proteins in the saliva of S. avenae and M. dirhodum, respectively. When combined with a comparable dataset from A. pisum, only three individual proteins were common to all the aphid species; two paralogues of the GMC oxidoreductase family (glucose dehydrogenase; GLD) and ACYPI009881, an aphid specific protein previously identified as a putative component of the salivary sheath. Antibodies were designed from translated protein sequences obtained from partial cDNA sequences for ACYPI009881 and both saliva associated GLDs. The antibodies detected all parent proteins in secreted saliva from the three aphid species, but could only detect ACYPI009881, and not saliva associated GLDs, in protein extractions from the salivary glands. This result was confirmed by immunohistochemistry using whole and sectioned salivary glands, and in addition, localised ACYPI009881 to specific cell types within the principal salivary gland. The implications of these findings for the origin of salivary components and the putative role of the proteins identified are discussed in the context of our limited understanding of the functional relationship between aphid saliva and the plants they feed on. The mass spectrometry data have been deposited to the ProteomeXchange and can be accessed under the identifier PXD000113.
Collapse
Affiliation(s)
- Sohail A. K. Rao
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - James C. Carolan
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Tom L. Wilkinson
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
- * E-mail:
| |
Collapse
|
47
|
Yang Y, Wei B, Zhao Y, Wang J. Construction of an integrated enzyme system consisting azoreductase and glucose 1-dehydrogenase for dye removal. Bioresour Technol 2013; 130:517-521. [PMID: 23321587 DOI: 10.1016/j.biortech.2012.12.106] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 12/11/2012] [Accepted: 12/14/2012] [Indexed: 06/01/2023]
Abstract
Azo dyes are toxic and carcinogenic and are often present in industrial effluents. In this research, azoreductase and glucose 1-dehydrogenase were coupled for both continuous generation of the cofactor NADH and azo dye removal. The results show that 85% maximum relative activity of azoreductase in an integrated enzyme system was obtained at the conditions: 1U azoreductase:10U glucose 1-dehydrogenase, 250mM glucose, 1.0mM NAD(+) and 150μM methyl red. Sensitivity analysis of the factors in the enzyme system affecting dye removal examined by an artificial neural network model shows that the relative importance of enzyme ratio between azoreductase and glucose 1-dehydrogenase was 22%, followed by dye concentration (27%), NAD(+) concentration (23%) and glucose concentration (22%), indicating none of the variables could be ignored in the enzyme system. Batch results show that the enzyme system has application potential for dye removal.
Collapse
Affiliation(s)
- Yuyi Yang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | | | | | | |
Collapse
|
48
|
Southcott M, MacVittie K, Halámek J, Halámková L, Jemison WD, Lobel R, Katz E. A pacemaker powered by an implantable biofuel cell operating under conditions mimicking the human blood circulatory system – battery not included. Phys Chem Chem Phys 2013; 15:6278-83. [PMID: 23519144 DOI: 10.1039/c3cp50929j] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Mark Southcott
- Department of Electrical and Computer Engineering, Clarkson University, Potsdam, NY 13699, USA
| | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
BACKGROUND L-Glucose, the enantiomer of D-glucose, was believed not to be utilized by any organisms. RESULTS An L-glucose-utilizing bacterium was isolated, and its L-glucose catabolic pathway was identified genetically and enzymatically. CONCLUSION L-Glucose was utilized via a novel pathway to pyruvate and D-glyceraldehyde 3-phosphate. SIGNIFICANCE This might lead to an understanding of homochirality in sugar metabolism. An L-glucose-utilizing bacterium, Paracoccus sp. 43P, was isolated from soil by enrichment cultivation in a minimal medium containing L-glucose as the sole carbon source. In cell-free extracts from this bacterium, NAD(+)-dependent L-glucose dehydrogenase was detected as having sole activity toward L-glucose. This enzyme, LgdA, was purified, and the lgdA gene was found to be located in a cluster of putative inositol catabolic genes. LgdA showed similar dehydrogenase activity toward scyllo- and myo-inositols. L-Gluconate dehydrogenase activity was also detected in cell-free extracts, which represents the reaction product of LgdA activity toward L-glucose. Enzyme purification and gene cloning revealed that the corresponding gene resides in a nine-gene cluster, the lgn cluster, which may participate in aldonate incorporation and assimilation. Kinetic and reaction product analysis of each gene product in the cluster indicated that they sequentially metabolize L-gluconate to glycolytic intermediates, D-glyceraldehyde-3-phosphate, and pyruvate through reactions of C-5 epimerization by dehydrogenase/reductase, dehydration, phosphorylation, and aldolase reaction, using a pathway similar to L-galactonate catabolism in Escherichia coli. Gene disruption studies indicated that the identified genes are responsible for L-glucose catabolism.
Collapse
Affiliation(s)
- Tetsu Shimizu
- From the Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Naoki Takaya
- From the Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Akira Nakamura
- From the Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| |
Collapse
|
50
|
Wang JY, Nien PC, Chen CH, Chen LC, Ho KC. A glucose bio-battery prototype based on a GDH/poly(methylene blue) bioanode and a graphite cathode with an iodide/tri-iodide redox couple. Bioresour Technol 2012; 116:502-506. [PMID: 22541949 DOI: 10.1016/j.biortech.2012.03.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/22/2012] [Accepted: 03/24/2012] [Indexed: 05/31/2023]
Abstract
A glucose bio-battery prototype independent of oxygen is proposed based on a glucose dehydrogenase (GDH) bioanode and a graphite cathode with an iodide/tri-iodide redox couple. At the bioanode, a NADH electrocatalyst, poly(methylene blue) (PMB), which can be easily grown on the electrode (screen-printed carbon paste electrode, SPCE) by electrodeposition, is harnessed and engineered. We find that carboxylated multi-walled carbon nanotubes (MWCNTs) are capable of significantly increasing the deposition amount of PMB and thus enhancing the PMB's electrocatalysis of NADH oxidation and the glucose bio-battery's performance. The choice of the iodide/tri-iodide redox couple eliminates the dependence of oxygen for this bio-battery, thus enabling the bio-battery with a constant current-output feature similar to that of the solar cells. The present glucose bio-battery prototype can attain a maximum power density of 2.4 μW/cm(2) at 25 °C.
Collapse
Affiliation(s)
- Jen-Yuan Wang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | | | | | | | | |
Collapse
|