201
|
Chung J, Won DH, Koh J, Kim EH, Woo SI. Hierarchical Cu pillar electrodes for electrochemical CO2 reduction to formic acid with low overpotential. Phys Chem Chem Phys 2016; 18:6252-8. [DOI: 10.1039/c5cp07964k] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hierarchical Cu pillar electrodes have shown enhanced electrochemical performance for CO2 reduction due to their increased surface area and controlled lattice property.
Collapse
Affiliation(s)
- Jaehoon Chung
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon (34141)
- Republic of Korea
| | - Da Hye Won
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon (34141)
- Republic of Korea
| | - Jaekang Koh
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology
- Daejeon (34141)
- Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Research Team
- Cheongjoo (28119)
- Republic of Korea
| | - Seong Ihl Woo
- Department of Chemical and Biomolecular Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon (34141)
- Republic of Korea
- Graduate School of EEWS
| |
Collapse
|
202
|
Protein Electrochemistry: Questions and Answers. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2016; 158:1-41. [DOI: 10.1007/10_2015_5016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
203
|
|
204
|
Hwang ET, Seo BK, Gu MB, Zeng AP. Successful bi-enzyme stabilization for the biomimetic cascade transformation of carbon dioxide. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00783j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In nature, carbon dioxide (CO2) conversion to valuable chemicals occurs via several metabolic pathways through multi-enzymatic reactions.
Collapse
Affiliation(s)
- Ee Taek Hwang
- Institute of Bioprocess and Biosystems Engineering
- Hamburg University of Technology
- D-21073 Hamburg
- Germany
| | - Bo-Kuk Seo
- Department of Biotechnology
- College of Life Science and Biotechnology
- Korea University
- Seongbuk-gu
- Republic of Korea
| | - Man Bock Gu
- Department of Biotechnology
- College of Life Science and Biotechnology
- Korea University
- Seongbuk-gu
- Republic of Korea
| | - An-Ping Zeng
- Institute of Bioprocess and Biosystems Engineering
- Hamburg University of Technology
- D-21073 Hamburg
- Germany
| |
Collapse
|
205
|
Alissandratos A, Easton CJ. Biocatalysis for the application of CO2 as a chemical feedstock. Beilstein J Org Chem 2015; 11:2370-87. [PMID: 26734087 PMCID: PMC4685893 DOI: 10.3762/bjoc.11.259] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/20/2015] [Indexed: 11/23/2022] Open
Abstract
Biocatalysts, capable of efficiently transforming CO2 into other more reduced forms of carbon, offer sustainable alternatives to current oxidative technologies that rely on diminishing natural fossil-fuel deposits. Enzymes that catalyse CO2 fixation steps in carbon assimilation pathways are promising catalysts for the sustainable transformation of this safe and renewable feedstock into central metabolites. These may be further converted into a wide range of fuels and commodity chemicals, through the multitude of known enzymatic reactions. The required reducing equivalents for the net carbon reductions may be drawn from solar energy, electricity or chemical oxidation, and delivered in vitro or through cellular mechanisms, while enzyme catalysis lowers the activation barriers of the CO2 transformations to make them more energy efficient. The development of technologies that treat CO2-transforming enzymes and other cellular components as modules that may be assembled into synthetic reaction circuits will facilitate the use of CO2 as a renewable chemical feedstock, greatly enabling a sustainable carbon bio-economy.
Collapse
Affiliation(s)
| | - Christopher J Easton
- Research School of Chemistry, Australian National University, Canberra ACT 2601, Australia
| |
Collapse
|
206
|
|
207
|
Vo T, Purohit K, Nguyen C, Biggs B, Mayoral S, Haan JL. Formate: an Energy Storage and Transport Bridge between Carbon Dioxide and a Formate Fuel Cell in a Single Device. CHEMSUSCHEM 2015; 8:3853-3858. [PMID: 26510492 DOI: 10.1002/cssc.201500958] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Indexed: 06/05/2023]
Abstract
We demonstrate the first device to our knowledge that uses a solar panel to power the electrochemical reduction of dissolved carbon dioxide (carbonate) into formate that is then used in the same device to operate a direct formate fuel cell (DFFC). The electrochemical reduction of carbonate is carried out on a Sn electrode in a reservoir that maintains a constant carbon balance between carbonate and formate. The electron-rich formate species is converted by the DFFC into electrical energy through electron release. The product of DFFC operation is the electron-deficient carbonate species that diffuses back to the reservoir bulk. It is possible to continuously charge the device using alternative energy (e.g., solar) to convert carbonate to formate for on-demand use in the DFFC; the intermittent nature of alternative energy makes this an attractive design. In this work, we demonstrate a proof-of-concept device that performs reduction of carbonate, storage of formate, and operation of a DFFC.
Collapse
Affiliation(s)
- Tracy Vo
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA
| | - Krutarth Purohit
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA
| | - Christopher Nguyen
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA
| | - Brenna Biggs
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA
| | - Salvador Mayoral
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA
| | - John L Haan
- Department of Chemistry and Biochemistry, California State University, Fullerton, 800 N State College Blvd, Fullerton, 92831, USA.
| |
Collapse
|
208
|
Kornienko N, Zhao Y, Kley CS, Zhu C, Kim D, Lin S, Chang CJ, Yaghi OM, Yang P. Metal-organic frameworks for electrocatalytic reduction of carbon dioxide. J Am Chem Soc 2015; 137:14129-35. [PMID: 26509213 DOI: 10.1021/jacs.5b08212] [Citation(s) in RCA: 612] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A key challenge in the field of electrochemical carbon dioxide reduction is the design of catalytic materials featuring high product selectivity, stability, and a composition of earth-abundant elements. In this work, we introduce thin films of nanosized metal-organic frameworks (MOFs) as atomically defined and nanoscopic materials that function as catalysts for the efficient and selective reduction of carbon dioxide to carbon monoxide in aqueous electrolytes. Detailed examination of a cobalt-porphyrin MOF, Al2(OH)2TCPP-Co (TCPP-H2 = 4,4',4″,4‴-(porphyrin-5,10,15,20-tetrayl)tetrabenzoate) revealed a selectivity for CO production in excess of 76% and stability over 7 h with a per-site turnover number (TON) of 1400. In situ spectroelectrochemical measurements provided insights into the cobalt oxidation state during the course of reaction and showed that the majority of catalytic centers in this MOF are redox-accessible where Co(II) is reduced to Co(I) during catalysis.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Omar M Yaghi
- King Abdulaziz City of Science and Technology , P.O. Box 6086, Riyadh 11413, Saudi Arabia.,Kavli Energy Nanosciences Institute , Berkeley, California 94720, United States
| | - Peidong Yang
- Kavli Energy Nanosciences Institute , Berkeley, California 94720, United States
| |
Collapse
|
209
|
Kwan P, McIntosh CL, Jennings DP, Hopkins RC, Chandrayan SK, Wu CH, Adams MWW, Jones AK. The [NiFe]-Hydrogenase of Pyrococcus furiosus Exhibits a New Type of Oxygen Tolerance. J Am Chem Soc 2015; 137:13556-65. [PMID: 26436715 DOI: 10.1021/jacs.5b07680] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report the first direct electrochemical characterization of the impact of oxygen on the hydrogen oxidation activity of an oxygen-tolerant, group 3, soluble [NiFe]-hydrogenase: hydrogenase I from Pyrococcus furiosus (PfSHI), which grows optimally near 100 °C. Chronoamperometric experiments were used to probe the sensitivity of PfSHI hydrogen oxidation activity to both brief and prolonged exposure to oxygen. For experiments between 15 and 80 °C, following short (<200 s) exposure to 14 μM O2 under oxidizing conditions, PfSHI always maintains some fraction of its initial hydrogen oxidation activity; i.e., it is oxygen-tolerant. Reactivation experiments show that two inactive states are formed by interaction with oxygen and both can be quickly (<150 s) reactivated. Analogous experiments, in which the interval of oxygen exposure is extended to 900 s, reveal that the response is highly temperature-dependent. At 25 °C, under sustained 1% O2/ 99% H2 exposure, the H2oxidation activity drops nearly to zero. However, at 80 °C, up to 32% of the enzyme's oxidation activity is retained. Reactivation of PfSHI following sustained exposure to oxygen occurs on a much longer time scale (tens of minutes), suggesting that a third inactive species predominates under these conditions. These results stand in contrast to the properties of oxygen-tolerant, group 1 [NiFe]-hydrogenases, which form a single state upon reaction with oxygen, and we propose that this new type of hydrogenase should be referred to as oxygen-resilient. Furthermore, PfSHI, like other group 3 [NiFe]-hydrogenases, does not possess the proximal [4Fe3S] cluster associated with the oxygen tolerance of some group 1 enzymes. Thus, a new mechanism is necessary to explain the observed oxygen tolerance in soluble, group 3 [NiFe]-hydrogenases, and we present a model integrating both electrochemical and spectroscopic results to define the relationships of these inactive states.
Collapse
Affiliation(s)
- Patrick Kwan
- Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287, United States
| | - Chelsea L McIntosh
- Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287, United States
| | - David P Jennings
- Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287, United States
| | - R Chris Hopkins
- Department of Biochemistry and Molecular Biology, The University of Georgia , Athens, Georgia 30602, United States
| | - Sanjeev K Chandrayan
- Department of Biochemistry and Molecular Biology, The University of Georgia , Athens, Georgia 30602, United States
| | - Chang-Hao Wu
- Department of Biochemistry and Molecular Biology, The University of Georgia , Athens, Georgia 30602, United States
| | - Michael W W Adams
- Department of Biochemistry and Molecular Biology, The University of Georgia , Athens, Georgia 30602, United States
| | - Anne K Jones
- Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287, United States
| |
Collapse
|
210
|
White JL, Baruch MF, Pander JE, Hu Y, Fortmeyer IC, Park JE, Zhang T, Liao K, Gu J, Yan Y, Shaw TW, Abelev E, Bocarsly AB. Light-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and Photoelectrodes. Chem Rev 2015; 115:12888-935. [DOI: 10.1021/acs.chemrev.5b00370] [Citation(s) in RCA: 1148] [Impact Index Per Article: 127.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James L. White
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Maor F. Baruch
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - James E. Pander
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Yuan Hu
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Ivy C. Fortmeyer
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - James Eujin Park
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Tao Zhang
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Kuo Liao
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Jing Gu
- Chemical
and Materials Science Center, National Renewable Energy Laboratory
, Golden, Colorado
80401, United States
| | - Yong Yan
- Chemical
and Materials Science Center, National Renewable Energy Laboratory
, Golden, Colorado
80401, United States
| | - Travis W. Shaw
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Esta Abelev
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Andrew B. Bocarsly
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| |
Collapse
|
211
|
Development of a compact continuous-flow electrochemical cell for an energy efficient production of alkali. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
212
|
Nichols EM, Gallagher JJ, Liu C, Su Y, Resasco J, Yu Y, Sun Y, Yang P, Chang MCY, Chang CJ. Hybrid bioinorganic approach to solar-to-chemical conversion. Proc Natl Acad Sci U S A 2015; 112:11461-6. [PMID: 26305947 PMCID: PMC4577177 DOI: 10.1073/pnas.1508075112] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Natural photosynthesis harnesses solar energy to convert CO2 and water to value-added chemical products for sustaining life. We present a hybrid bioinorganic approach to solar-to-chemical conversion in which sustainable electrical and/or solar input drives production of hydrogen from water splitting using biocompatible inorganic catalysts. The hydrogen is then used by living cells as a source of reducing equivalents for conversion of CO2 to the value-added chemical product methane. Using platinum or an earth-abundant substitute, α-NiS, as biocompatible hydrogen evolution reaction (HER) electrocatalysts and Methanosarcina barkeri as a biocatalyst for CO2 fixation, we demonstrate robust and efficient electrochemical CO2 to CH4 conversion at up to 86% overall Faradaic efficiency for ≥ 7 d. Introduction of indium phosphide photocathodes and titanium dioxide photoanodes affords a fully solar-driven system for methane generation from water and CO2, establishing that compatible inorganic and biological components can synergistically couple light-harvesting and catalytic functions for solar-to-chemical conversion.
Collapse
Affiliation(s)
- Eva M Nichols
- Department of Chemistry, University of California, Berkeley, CA 94720; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Joseph J Gallagher
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720
| | - Chong Liu
- Department of Chemistry, University of California, Berkeley, CA 94720; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Yude Su
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Joaquin Resasco
- Department of Chemical Engineering, University of California, Berkeley, CA 94720
| | - Yi Yu
- Department of Chemistry, University of California, Berkeley, CA 94720
| | - Yujie Sun
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT 84322
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, CA 94720; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720; Department of Materials Science and Engineering, University of California, Berkeley, CA 94720; Kavli Energy NanoSciences Institute, Berkeley, CA 94720;
| | - Michelle C Y Chang
- Department of Chemistry, University of California, Berkeley, CA 94720; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720;
| | - Christopher J Chang
- Department of Chemistry, University of California, Berkeley, CA 94720; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720; Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720; Howard Hughes Medical Institute, University of California, Berkeley, CA 94720
| |
Collapse
|
213
|
Sakai K, Hsieh BC, Maruyama A, Kitazumi Y, Shirai O, Kano K. Interconversion between formate and hydrogen carbonate by tungsten-containing formate dehydrogenase-catalyzed mediated bioelectrocatalysis. SENSING AND BIO-SENSING RESEARCH 2015. [DOI: 10.1016/j.sbsr.2015.07.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
214
|
Bagherzadeh S, Mankad NP. Catalyst Control of Selectivity in CO2 Reduction Using a Tunable Heterobimetallic Effect. J Am Chem Soc 2015; 137:10898-901. [PMID: 26293355 DOI: 10.1021/jacs.5b05692] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sharareh Bagherzadeh
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Neal P. Mankad
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| |
Collapse
|
215
|
Piazzetta P, Marino T, Russo N, Salahub DR. Direct Hydrogenation of Carbon Dioxide by an Artificial Reductase Obtained by Substituting Rhodium for Zinc in the Carbonic Anhydrase Catalytic Center. A Mechanistic Study. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00185] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- P. Piazzetta
- Dipartimento
di Chimica e Tecnologie Chimiche, Università della Calabria, 87036Rende, Italy
| | - T. Marino
- Dipartimento
di Chimica e Tecnologie Chimiche, Università della Calabria, 87036Rende, Italy
| | - N. Russo
- Dipartimento
di Chimica e Tecnologie Chimiche, Università della Calabria, 87036Rende, Italy
| | - D. R. Salahub
- Department
of Chemistry, IQST − Institute for Quantum Science and Technology,
CMS − Centre for Molecular Simulation, BI 556, University of Calgary, 2500 University Drive NW, Calgary, Alberta Canada T2N 1N4
| |
Collapse
|
216
|
Kuehnel MF, Wakerley DW, Orchard KL, Reisner E. Photocatalytic Formic Acid Conversion on CdS Nanocrystals with Controllable Selectivity for H2 or CO. Angew Chem Int Ed Engl 2015; 54:9627-31. [PMID: 26201752 PMCID: PMC4552973 DOI: 10.1002/anie.201502773] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Indexed: 11/09/2022]
Abstract
Formic acid is considered a promising energy carrier and hydrogen storage material for a carbon-neutral economy. We present an inexpensive system for the selective room-temperature photocatalytic conversion of formic acid into either hydrogen or carbon monoxide. Under visible-light irradiation (λ>420 nm, 1 sun), suspensions of ligand-capped cadmium sulfide nanocrystals in formic acid/sodium formate release up to 116±14 mmol H2 g(cat)(-1) h(-1) with >99% selectivity when combined with a cobalt co-catalyst; the quantum yield at λ=460 nm was 21.2±2.7%. In the absence of capping ligands, suspensions of the same photocatalyst in aqueous sodium formate generate up to 102±13 mmol CO g(cat)(-1) h(-1) with >95% selectivity and 19.7±2.7% quantum yield. H2 and CO production was sustained for more than one week with turnover numbers greater than 6×10(5) and 3×10(6), respectively.
Collapse
Affiliation(s)
- Moritz F Kuehnel
- Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge (UK) http://www-reisner.ch.cam.ac.uk
| | - David W Wakerley
- Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge (UK) http://www-reisner.ch.cam.ac.uk
| | - Katherine L Orchard
- Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge (UK) http://www-reisner.ch.cam.ac.uk
| | - Erwin Reisner
- Christian Doppler Laboratory for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge (UK) http://www-reisner.ch.cam.ac.uk.
| |
Collapse
|
217
|
Kuehnel MF, Wakerley DW, Orchard KL, Reisner E. Photocatalytic Formic Acid Conversion on CdS Nanocrystals with Controllable Selectivity for H2or CO. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502773] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
218
|
Shi J, Jiang Y, Jiang Z, Wang X, Wang X, Zhang S, Han P, Yang C. Enzymatic conversion of carbon dioxide. Chem Soc Rev 2015; 44:5981-6000. [PMID: 26055659 DOI: 10.1039/c5cs00182j] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
With the continuous increase in fossil fuels consumption and the rapid growth of atmospheric CO2 concentration, the harmonious state between human and nature faces severe challenges. Exploring green and sustainable energy resources and devising efficient methods for CO2 capture, sequestration and utilization are urgently required. Converting CO2 into fuels/chemicals/materials as an indispensable element for CO2 capture, sequestration and utilization may offer a win-win strategy to both decrease the CO2 concentration and achieve the efficient exploitation of carbon resources. Among the current major methods (including chemical, photochemical, electrochemical and enzymatic methods), the enzymatic method, which is inspired by the CO2 metabolic process in cells, offers a green and potent alternative for efficient CO2 conversion due to its superior stereo-specificity and region/chemo-selectivity. Thus, in this tutorial review, we firstly provide a brief background about enzymatic conversion for CO2 capture, sequestration and utilization. Next, we depict six major routes of the CO2 metabolic process in cells, which are taken as the inspiration source for the construction of enzymatic systems in vitro. Next, we focus on the state-of-the-art routes for the catalytic conversion of CO2 by a single enzyme system and by a multienzyme system. Some emerging approaches and materials utilized for constructing single-enzyme/multienzyme systems to enhance the catalytic activity/stability will be highlighted. Finally, a summary about the current advances and the future perspectives of the enzymatic conversion of CO2 will be presented.
Collapse
Affiliation(s)
- Jiafu Shi
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | | | | | | | | | | | | | | |
Collapse
|
219
|
Hwang H, Yeon YJ, Lee S, Choe H, Jang MG, Cho DH, Park S, Kim YH. Electro-biocatalytic production of formate from carbon dioxide using an oxygen-stable whole cell biocatalyst. BIORESOURCE TECHNOLOGY 2015; 185:35-9. [PMID: 25746476 DOI: 10.1016/j.biortech.2015.02.086] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 02/20/2015] [Accepted: 02/21/2015] [Indexed: 05/28/2023]
Abstract
The use of biocatalysts to convert CO2 into useful chemicals is a promising alternative to chemical conversion. In this study, the electro-biocatalytic conversion of CO2 to formate was attempted with a whole cell biocatalyst. Eight species of Methylobacteria were tested for CO2 reduction, and one of them, Methylobacterium extorquens AM1, exhibited an exceptionally higher capability to synthesize formate from CO2 by supplying electrons with electrodes, which produced formate concentrations of up to 60mM. The oxygen stability of the biocatalyst was investigated, and the results indicated that the whole cell catalyst still exhibited CO2 reduction activity even after being exposed to oxygen gas. From the results, we could demonstrate the electro-biocatalytic conversion of CO2 to formate using an obligate aerobe, M. extorquens AM1, as a whole cell biocatalyst without providing extra cofactors or hydrogen gas. This electro-biocatalytic process suggests a promising approach toward feasible way of CO2 conversion to formate.
Collapse
Affiliation(s)
- Hyojin Hwang
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Young Joo Yeon
- The Institute of Molecular Biology and Genetics, Seoul National University, 151-742 Seoul, Republic of Korea
| | - Sumi Lee
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Hyunjun Choe
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Min Gee Jang
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Dae Haeng Cho
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Sehkyu Park
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea
| | - Yong Hwan Kim
- Department of Chemical Engineering, Kwangwoon University, 139-701 Seoul, Republic of Korea.
| |
Collapse
|
220
|
Franco F, Cometto C, Sordello F, Minero C, Nencini L, Fiedler J, Gobetto R, Nervi C. Electrochemical Reduction of CO2by M(CO)4(diimine) Complexes (M=Mo, W): Catalytic Activity Improved by 2,2′-Dipyridylamine. ChemElectroChem 2015. [DOI: 10.1002/celc.201500115] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
221
|
Liu C, Gallagher JJ, Sakimoto KK, Nichols EM, Chang CJ, Chang MCY, Yang P. Nanowire-bacteria hybrids for unassisted solar carbon dioxide fixation to value-added chemicals. NANO LETTERS 2015; 15:3634-9. [PMID: 25848808 PMCID: PMC5812269 DOI: 10.1021/acs.nanolett.5b01254] [Citation(s) in RCA: 224] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Direct solar-powered production of value-added chemicals from CO2 and H2O, a process that mimics natural photosynthesis, is of fundamental and practical interest. In natural photosynthesis, CO2 is first reduced to common biochemical building blocks using solar energy, which are subsequently used for the synthesis of the complex mixture of molecular products that form biomass. Here we report an artificial photosynthetic scheme that functions via a similar two-step process by developing a biocompatible light-capturing nanowire array that enables a direct interface with microbial systems. As a proof of principle, we demonstrate that a hybrid semiconductor nanowire-bacteria system can reduce CO2 at neutral pH to a wide array of chemical targets, such as fuels, polymers, and complex pharmaceutical precursors, using only solar energy input. The high-surface-area silicon nanowire array harvests light energy to provide reducing equivalents to the anaerobic bacterium, Sporomusa ovata, for the photoelectrochemical production of acetic acid under aerobic conditions (21% O2) with low overpotential (η < 200 mV), high Faradaic efficiency (up to 90%), and long-term stability (up to 200 h). The resulting acetate (∼6 g/L) can be activated to acetyl coenzyme A (acetyl-CoA) by genetically engineered Escherichia coli and used as a building block for a variety of value-added chemicals, such as n-butanol, polyhydroxybutyrate (PHB) polymer, and three different isoprenoid natural products. As such, interfacing biocompatible solid-state nanodevices with living systems provides a starting point for developing a programmable system of chemical synthesis entirely powered by sunlight.
Collapse
Affiliation(s)
- Chong Liu
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Joseph J. Gallagher
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
| | - Kelsey K. Sakimoto
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Eva M. Nichols
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Christopher J. Chang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, CA 94720, USA
- Correspondence and requests should be addressed to P. Y. (), M. C. Y. C. (), or C. J. C ()
| | - Michelle C. Y. Chang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Correspondence and requests should be addressed to P. Y. (), M. C. Y. C. (), or C. J. C ()
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
- Kavli Energy NanoSciences Institute, Berkeley, CA 94720, USA
- Correspondence and requests should be addressed to P. Y. (), M. C. Y. C. (), or C. J. C ()
| |
Collapse
|
222
|
Zeng AP, Kaltschmitt M. Green electricity and biowastes via biogas to bulk-chemicals and fuels: The next move toward a sustainable bioeconomy. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- An-Ping Zeng
- Institute of Bioprocess and Biosystems Engineering, Hamburg University of Technology (TUHH); Hamburg Germany
| | - Martin Kaltschmitt
- Institute of Environmental Technology and Energy Economics; Hamburg University of Technology (TUHH); Hamburg Germany
| |
Collapse
|
223
|
Abstract
UNLABELLED Direct, mediator-free transfer of electrons between a microbial cell and a solid phase in its surrounding environment has been suggested to be a widespread and ecologically significant process. The high rates of microbial electron uptake observed during microbially influenced corrosion of iron [Fe(0)] and during microbial electrosynthesis have been considered support for a direct electron uptake in these microbial processes. However, the underlying molecular mechanisms of direct electron uptake are unknown. We investigated the electron uptake characteristics of the Fe(0)-corroding and electromethanogenic archaeon Methanococcus maripaludis and discovered that free, surface-associated redox enzymes, such as hydrogenases and presumably formate dehydrogenases, are sufficient to mediate an apparent direct electron uptake. In genetic and biochemical experiments, we showed that these enzymes, which are released from cells during routine culturing, catalyze the formation of H2 or formate when sorbed to an appropriate redox-active surface. These low-molecular-weight products are rapidly consumed by M. maripaludis cells when present, thereby preventing their accumulation to any appreciable or even detectable level. Rates of H2 and formate formation by cell-free spent culture medium were sufficient to explain the observed rates of methane formation from Fe(0) and cathode-derived electrons by wild-type M. maripaludis as well as by a mutant strain carrying deletions in all catabolic hydrogenases. Our data collectively show that cell-derived free enzymes can mimic direct extracellular electron transfer during Fe(0) corrosion and microbial electrosynthesis and may represent an ecologically important but so far overlooked mechanism in biological electron transfer. IMPORTANCE The intriguing trait of some microbial organisms to engage in direct electron transfer is thought to be widespread in nature. Consequently, direct uptake of electrons into microbial cells from solid surfaces is assumed to have a significant impact not only on fundamental microbial and biogeochemical processes but also on applied bioelectrochemical systems, such as microbial electrosynthesis and biocorrosion. This study provides a simple mechanistic explanation for frequently observed fast electron uptake kinetics in microbiological systems without a direct transfer: free, cell-derived enzymes can interact with cathodic surfaces and catalyze the formation of intermediates that are rapidly consumed by microbial cells. This electron transfer mechanism likely plays a significant role in various microbial electron transfer reactions in the environment.
Collapse
|
224
|
Manbeck GF, Fujita E. A review of iron and cobalt porphyrins, phthalocyanines and related complexes for electrochemical and photochemical reduction of carbon dioxide. J PORPHYR PHTHALOCYA 2015. [DOI: 10.1142/s1088424615300013] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This review summarizes research on the electrochemical and photochemical reduction of CO 2 using a variety of iron and cobalt porphyrins, phthalocyanines and related complexes. Metalloporphyrins and metallophthalocyanines are visible light absorbers with extremely large extinction coefficients. However, yields of photochemically-generated active catalysts for CO 2 reduction are typically low owing to the requirement of a second photoinduced electron. This requirement is not relevant to the case of electrochemical CO 2 reduction. Recent progress on efficient and stable electrochemical systems includes the use of FeTPP catalysts that have prepositioned phenyl OH groups in their second coordination spheres. This has led to remarkable progress in carrying out coupled proton-electron transfer reactions for CO 2 reduction. Such ground-breaking research has to be continued in order to produce renewable fuels in an economically feasible manner.
Collapse
Affiliation(s)
- Gerald F. Manbeck
- Chemistry Department, Brookhaven National Laboratory, Upton NY 11973, USA
| | - Etsuko Fujita
- Chemistry Department, Brookhaven National Laboratory, Upton NY 11973, USA
| |
Collapse
|
225
|
Min X, Kanan MW. Pd-Catalyzed Electrohydrogenation of Carbon Dioxide to Formate: High Mass Activity at Low Overpotential and Identification of the Deactivation Pathway. J Am Chem Soc 2015; 137:4701-8. [DOI: 10.1021/ja511890h] [Citation(s) in RCA: 368] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiaoquan Min
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Matthew W. Kanan
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
226
|
Kortlever R, Balemans C, Kwon Y, Koper MT. Electrochemical CO2 reduction to formic acid on a Pd-based formic acid oxidation catalyst. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.08.001] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
227
|
Bachmeier A, Armstrong F. Solar-driven proton and carbon dioxide reduction to fuels — lessons from metalloenzymes. Curr Opin Chem Biol 2015; 25:141-51. [DOI: 10.1016/j.cbpa.2015.01.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 12/23/2014] [Accepted: 01/07/2015] [Indexed: 01/13/2023]
|
228
|
Bio-inspired mechanistic insights into CO2 reduction. Curr Opin Chem Biol 2015; 25:103-9. [DOI: 10.1016/j.cbpa.2014.12.022] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/11/2014] [Accepted: 12/12/2014] [Indexed: 11/17/2022]
|
229
|
Mao X, Hatton TA. Recent Advances in Electrocatalytic Reduction of Carbon Dioxide Using Metal-Free Catalysts. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504336h] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xianwen Mao
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - T. Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
230
|
Yucesoy DT, Karaca BT, Cetinel S, Caliskan HB, Adali E, Gul-Karaguler N, Tamerler C. Direct bioelectrocatalysis at the interfaces by genetically engineered dehydrogenase. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2015. [DOI: 10.1680/bbn.14.00022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
231
|
Schlager S, Neugebauer H, Haberbauer M, Hinterberger G, Sariciftci NS. Direct Electrochemical Addressing of Immobilized Alcohol Dehydrogenase for the Heterogeneous Bioelectrocatalytic Reduction of Butyraldehyde to Butanol. ChemCatChem 2015; 7:967-971. [PMID: 26113881 PMCID: PMC4471636 DOI: 10.1002/cctc.201402932] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 01/15/2015] [Indexed: 11/15/2022]
Abstract
Modified electrodes using immobilized alcohol dehydrogenase enzymes for the efficient electroreduction of butyraldehyde to butanol are presented as an important step for the utilization of CO2-reduction products. Alcohol dehydrogenase was immobilized, embedded in an alginate-silicate hybrid gel, on a carbon felt (CF) electrode. The application of this enzyme to the reduction of an aldehyde to an alcohol with the aid of the coenzyme nicotinamide adenine dinucleotide (NADH), in analogy to the final step in the natural reduction cascade of CO2 to alcohol, has been already reported. However, the use of such enzymatic reductions is limited because of the necessity of providing expensive NADH as a sacrificial electron and proton donor. Immobilization of such dehydrogenase enzymes on electrodes and direct pumping of electrons into the biocatalysts offers an easy and efficient way for the biochemical recycling of CO2 to valuable chemicals or alternative synthetic fuels. We report the direct electrochemical addressing of immobilized alcohol dehydrogenase for the reduction of butyraldehyde to butanol without consumption of NADH. The selective reduction of butyraldehyde to butanol occurs at room temperature, ambient pressure and neutral pH. Production of butanol was detected by using liquid-injection gas chromatography and was estimated to occur with Faradaic efficiencies of around 40 %.
Collapse
Affiliation(s)
- S Schlager
- Linz Institute for Organic Solar Cells, Johannes Kepler University LinzAltenbergerstraße 69, 4040 Linz (Austria)
| | - H Neugebauer
- Linz Institute for Organic Solar Cells, Johannes Kepler University LinzAltenbergerstraße 69, 4040 Linz (Austria)
| | - M Haberbauer
- PROFACTOR GmbHIm Stadtgut A2, 4407 Steyr-Gleink (Austria)
| | - G Hinterberger
- Linz Institute for Organic Solar Cells, Johannes Kepler University LinzAltenbergerstraße 69, 4040 Linz (Austria)
| | - N S Sariciftci
- Linz Institute for Organic Solar Cells, Johannes Kepler University LinzAltenbergerstraße 69, 4040 Linz (Austria)
| |
Collapse
|
232
|
Sulphur shuttling across a chaperone during molybdenum cofactor maturation. Nat Commun 2015; 6:6148. [PMID: 25649206 DOI: 10.1038/ncomms7148] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 12/15/2014] [Indexed: 11/09/2022] Open
Abstract
Formate dehydrogenases (FDHs) are of interest as they are natural catalysts that sequester atmospheric CO2, generating reduced carbon compounds with possible uses as fuel. FDHs activity in Escherichia coli strictly requires the sulphurtransferase EcFdhD, which likely transfers sulphur from IscS to the molybdenum cofactor (Mo-bisPGD) of FDHs. Here we show that EcFdhD binds Mo-bisPGD in vivo and has submicromolar affinity for GDP-used as a surrogate of the molybdenum cofactor's nucleotide moieties. The crystal structure of EcFdhD in complex with GDP shows two symmetrical binding sites located on the same face of the dimer. These binding sites are connected via a tunnel-like cavity to the opposite face of the dimer where two dynamic loops, each harbouring two functionally important cysteine residues, are present. On the basis of structure-guided mutagenesis, we propose a model for the sulphuration mechanism of Mo-bisPGD where the sulphur atom shuttles across the chaperone dimer.
Collapse
|
233
|
Choe H, Ha JM, Joo JC, Kim H, Yoon HJ, Kim S, Son SH, Gengan RM, Jeon ST, Chang R, Jung KD, Kim YH, Lee HH. Structural insights into the efficient CO2-reducing activity of an NAD-dependent formate dehydrogenase from Thiobacillus sp. KNK65MA. ACTA ACUST UNITED AC 2015; 71:313-23. [PMID: 25664741 DOI: 10.1107/s1399004714025474] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 11/20/2014] [Indexed: 11/11/2022]
Abstract
CO2 fixation is thought to be one of the key factors in mitigating global warming. Of the various methods for removing CO2, the NAD-dependent formate dehydrogenase from Candida boidinii (CbFDH) has been widely used in various biological CO2-reduction systems; however, practical applications of CbFDH have often been impeded owing to its low CO2-reducing activity. It has recently been demonstrated that the NAD-dependent formate dehydrogenase from Thiobacillus sp. KNK65MA (TsFDH) has a higher CO2-reducing activity compared with CbFDH. The crystal structure of TsFDH revealed that the biological unit in the asymmetric unit has two conformations, i.e. open (NAD(+)-unbound) and closed (NAD(+)-bound) forms. Three major differences are observed in the crystal structures of TsFDH and CbFDH. Firstly, hole 2 in TsFDH is blocked by helix α20, whereas it is not blocked in CbFDH. Secondly, the sizes of holes 1 and 2 are larger in TsFDH than in CbFDH. Thirdly, Lys287 in TsFDH, which is crucial for the capture of formate and its subsequent delivery to the active site, is an alanine in CbFDH. A computational simulation suggested that the higher CO2-reducing activity of TsFDH is owing to its lower free-energy barrier to CO2 reduction than in CbFDH.
Collapse
Affiliation(s)
- Hyunjun Choe
- Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Jung Min Ha
- Department of Bio and Nano Chemistry, Kookmin University, Seoul 136-702, Republic of Korea
| | - Jeong Chan Joo
- Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Hyunook Kim
- Department of Chemistry, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Hye-Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Seonghoon Kim
- Department of Chemistry, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Sang Hyeon Son
- Department of Bio and Nano Chemistry, Kookmin University, Seoul 136-702, Republic of Korea
| | - Robert M Gengan
- Department of Chemistry, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa
| | - Seung Taeg Jeon
- Department of Bio and Nano Chemistry, Kookmin University, Seoul 136-702, Republic of Korea
| | - Rakwoo Chang
- Department of Chemistry, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Kwang Deog Jung
- Energy Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Yong Hwan Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea
| | - Hyung Ho Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| |
Collapse
|
234
|
Roldan A, Hollingsworth N, Roffey A, Islam HU, Goodall JBM, Catlow CRA, Darr JA, Bras W, Sankar G, Holt KB, Hogarth G, de Leeuw NH. Bio-inspired CO2conversion by iron sulfide catalysts under sustainable conditions. Chem Commun (Camb) 2015; 51:7501-4. [DOI: 10.1039/c5cc02078f] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
CO2conversion to small bio-molecules on greigite minerals under room temperature and pressure.
Collapse
Affiliation(s)
- A. Roldan
- Department of Chemistry
- University College London
- London
- UK
| | | | - A. Roffey
- Department of Chemistry
- University College London
- London
- UK
| | - H.-U. Islam
- Department of Chemistry
- University College London
- London
- UK
- European Synchrotron Radiation Facility
| | | | | | - J. A. Darr
- Department of Chemistry
- University College London
- London
- UK
| | - W. Bras
- European Synchrotron Radiation Facility
- Grenoble F38043
- France
| | - G. Sankar
- Department of Chemistry
- University College London
- London
- UK
| | - K. B. Holt
- Department of Chemistry
- University College London
- London
- UK
| | - G. Hogarth
- Department of Chemistry
- University College London
- London
- UK
| | - N. H. de Leeuw
- Department of Chemistry
- University College London
- London
- UK
| |
Collapse
|
235
|
Lee Y, Kim S, Fei H, Kang JK, Cohen SM. Photocatalytic CO2 reduction using visible light by metal-monocatecholato species in a metal–organic framework. Chem Commun (Camb) 2015; 51:16549-52. [DOI: 10.1039/c5cc04506a] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal–organic frameworks (MOFs) with isolated metal-monocatecholato groups have been synthesized via postsynthetic exchange (PSE) for CO2 reduction photocatalyst under visible light irradiation in the presence of 1-benzyl-1,4-dihydronicotinamide and triethanolamine.
Collapse
Affiliation(s)
- Yeob Lee
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - Sangjun Kim
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | - Honghan Fei
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - Jeung Ku Kang
- Graduate School of EEWS
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | - Seth M. Cohen
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| |
Collapse
|
236
|
Lee Y, Kim S, Kang JK, Cohen SM. Photocatalytic CO2 reduction by a mixed metal (Zr/Ti), mixed ligand metal–organic framework under visible light irradiation. Chem Commun (Camb) 2015; 51:5735-8. [DOI: 10.1039/c5cc00686d] [Citation(s) in RCA: 279] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Postsynthetic exchange (PSE) of Ti(iv) into a Zr(iv)-based MOF enabled photocatalytic CO2 reduction to HCOOH under visible light irradiation with the aid of BNAH and TEOA.
Collapse
Affiliation(s)
- Yeob Lee
- Department of Chemistry and Biochemistry
- University of California
- San Diego
- La Jolla
- USA
| | - Sangjun Kim
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | - Jeung Ku Kang
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
- Graduate School of EEWS
| | - Seth M. Cohen
- Department of Chemistry and Biochemistry
- University of California
- San Diego
- La Jolla
- USA
| |
Collapse
|
237
|
Thakker C, Martínez I, Li W, San KY, Bennett GN. Metabolic engineering of carbon and redox flow in the production of small organic acids. J Ind Microbiol Biotechnol 2014; 42:403-22. [PMID: 25502283 DOI: 10.1007/s10295-014-1560-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 11/24/2014] [Indexed: 11/26/2022]
Abstract
The review describes efforts toward metabolic engineering of production of organic acids. One aspect of the strategy involves the generation of an appropriate amount and type of reduced cofactor needed for the designed pathway. The ability to capture reducing power in the proper form, NADH or NADPH for the biosynthetic reactions leading to the organic acid, requires specific attention in designing the host and also depends on the feedstock used and cell energetic requirements for efficient metabolism during production. Recent work on the formation and commercial uses of a number of small mono- and diacids is discussed with redox differences, major biosynthetic precursors and engineering strategies outlined. Specific attention is given to those acids that are used in balancing cell redox or providing reduction equivalents for the cell, such as formate, which can be used in conjunction with metabolic engineering of other products to improve yields. Since a number of widely studied acids derived from oxaloacetate as an important precursor, several of these acids are covered with the general strategies and particular components summarized, including succinate, fumarate and malate. Since malate and fumarate are less reduced than succinate, the availability of reduction equivalents and level of aerobiosis are important parameters in optimizing production of these compounds in various hosts. Several other more oxidized acids are also discussed as in some cases, they may be desired products or their formation is minimized to afford higher yields of more reduced products. The placement and connections among acids in the typical central metabolic network are presented along with the use of a number of specific non-native enzymes to enhance routes to high production, where available alternative pathways and strategies are discussed. While many organic acids are derived from a few precursors within central metabolism, each organic acid has its own special requirements for high production and best compatibility with host physiology.
Collapse
Affiliation(s)
- Chandresh Thakker
- Department of Biochemistry and Cell Biology, Rice University, Houston, TX, USA
| | | | | | | | | |
Collapse
|
238
|
Hartmann T, Schwanhold N, Leimkühler S. Assembly and catalysis of molybdenum or tungsten-containing formate dehydrogenases from bacteria. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1854:1090-100. [PMID: 25514355 DOI: 10.1016/j.bbapap.2014.12.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/04/2014] [Accepted: 12/06/2014] [Indexed: 11/28/2022]
Abstract
The global carbon cycle depends on the biological transformations of C1 compounds, which include the reductive incorporation of CO₂into organic molecules (e.g. in photosynthesis and other autotrophic pathways), in addition to the production of CO₂from formate, a reaction that is catalyzed by formate dehydrogenases (FDHs). FDHs catalyze, in general, the oxidation of formate to CO₂and H⁺. However, selected enzymes were identified to act as CO₂reductases, which are able to reduce CO₂to formate under physiological conditions. This reaction is of interest for the generation of formate as a convenient storage form of H₂for future applications. Cofactor-containing FDHs are found in anaerobic bacteria and archaea, in addition to facultative anaerobic or aerobic bacteria. These enzymes are highly diverse and employ different cofactors such as the molybdenum cofactor (Moco), FeS clusters and flavins, or cytochromes. Some enzymes include tungsten (W) in place of molybdenum (Mo) at the active site. For catalytic activity, a selenocysteine (SeCys) or cysteine (Cys) ligand at the Mo atom in the active site is essential for the reaction. This review will focus on the characterization of Mo- and W-containing FDHs from bacteria, their active site structure, subunit compositions and its proposed catalytic mechanism. We will give an overview on the different mechanisms of substrate conversion available so far, in addition to providing an outlook on bio-applications of FDHs. This article is part of a Special Issue entitled: Cofactor-dependent proteins: evolution, chemical diversity and bio-applications.
Collapse
Affiliation(s)
- Tobias Hartmann
- Institute of Biochemistry and Biology, Department of Molecular Enzymology, University of Potsdam, D-14476 Potsdam, Germany
| | - Nadine Schwanhold
- Institute of Biochemistry and Biology, Department of Molecular Enzymology, University of Potsdam, D-14476 Potsdam, Germany
| | - Silke Leimkühler
- Institute of Biochemistry and Biology, Department of Molecular Enzymology, University of Potsdam, D-14476 Potsdam, Germany.
| |
Collapse
|
239
|
Molybdenum and tungsten-dependent formate dehydrogenases. J Biol Inorg Chem 2014; 20:287-309. [DOI: 10.1007/s00775-014-1218-2] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 11/09/2014] [Indexed: 11/25/2022]
|
240
|
Choi DS, Kim NH, Hwang BK. Pepper mitochondrial FORMATE DEHYDROGENASE1 regulates cell death and defense responses against bacterial pathogens. PLANT PHYSIOLOGY 2014; 166:1298-311. [PMID: 25237129 PMCID: PMC4226358 DOI: 10.1104/pp.114.246736] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Formate dehydrogenase (FDH; EC 1.2.1.2) is an NAD-dependent enzyme that catalyzes the oxidation of formate to carbon dioxide. Here, we report the identification and characterization of pepper (Capsicum annuum) mitochondrial FDH1 as a positive regulator of cell death and defense responses. Transient expression of FDH1 caused hypersensitive response (HR)-like cell death in pepper and Nicotiana benthamiana leaves. The D-isomer -: specific 2-hydroxyacid dehydrogenase signatures of FDH1 were required for the induction of HR-like cell death and FDH activity. FDH1 contained a mitochondrial targeting sequence at the N-terminal region; however, mitochondrial localization of FDH1 was not essential for the induction of HR-like cell death and FDH activity. FDH1 silencing in pepper significantly attenuated the cell death response and salicylic acid levels but stimulated growth of Xanthomonas campestris pv vesicatoria. By contrast, transgenic Arabidopsis (Arabidopsis thaliana) overexpressing FDH1 exhibited greater resistance to Pseudomonas syringae pv tomato in a salicylic acid-dependent manner. Arabidopsis transfer DNA insertion mutant analysis indicated that AtFDH1 expression is required for basal defense and resistance gene-mediated resistance to P. syringae pv tomato infection. Taken together, these data suggest that FDH1 has an important role in HR-like cell death and defense responses to bacterial pathogens.
Collapse
Affiliation(s)
- Du Seok Choi
- Laboratory of Molecular Plant Pathology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Nak Hyun Kim
- Laboratory of Molecular Plant Pathology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Byung Kook Hwang
- Laboratory of Molecular Plant Pathology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| |
Collapse
|
241
|
Bassegoda A, Madden C, Wakerley DW, Reisner E, Hirst J. Reversible interconversion of CO2 and formate by a molybdenum-containing formate dehydrogenase. J Am Chem Soc 2014; 136:15473-6. [PMID: 25325406 DOI: 10.1021/ja508647u] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
CO2 and formate are rapidly, selectively, and efficiently interconverted by tungsten-containing formate dehydrogenases that surpass current synthetic catalysts. However, their mechanism of catalysis is unknown, and no tractable system is available for study. Here, we describe the catalytic properties of the molybdenum-containing formate dehydrogenase H from the model organism Escherichia coli (EcFDH-H). We use protein film voltammetry to demonstrate that EcFDH-H is a highly active, reversible electrocatalyst. In each voltammogram a single point of zero net current denotes the CO2 reduction potential that varies with pH according to the Nernst equation. By quantifying formate production we show that electrocatalytic CO2 reduction is specific. Our results reveal the capabilities of a Mo-containing catalyst for reversible CO2 reduction and establish EcFDH-H as an attractive model system for mechanistic investigations and a template for the development of synthetic catalysts.
Collapse
Affiliation(s)
- Arnau Bassegoda
- Medical Research Council Mitochondrial Biology Unit, Hills Road, Cambridge, CB2 0XY, United Kingdom
| | | | | | | | | |
Collapse
|
242
|
Oldenhof S, Lutz M, de Bruin B, Ivar van der Vlugt J, Reek JNH. Dehydrogenation of formic acid by Ir-bisMETAMORPhos complexes: experimental and computational insight into the role of a cooperative ligand. Chem Sci 2014; 6:1027-1034. [PMID: 29560190 PMCID: PMC5811074 DOI: 10.1039/c4sc02555e] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 10/21/2014] [Indexed: 01/15/2023] Open
Abstract
The synthesis of Ir-complexes with three bisMETAMORPhos ligands is reported. The activity of these systems towards HCOOH dehydrogenation and the dual role of the ligand during catalysis is discussed, using spectroscopic and computational methods.
The synthesis and tautomeric nature of three xanthene-based bisMETAMORPhos ligands (La–Lc) is reported. Coordination of these bis(sulfonamidophosphines) to Ir(acac)(cod) initially leads to the formation of IrI(LH) species (1a), which convert via formal oxidative addition of the ligand to IrIII(L) monohydride complexes 2a–c. The rate for this step strongly depends on the ligand employed. IrIII complexes 2a–c were applied in the base-free dehydrogenation of formic acid, reaching turnover frequencies of 3090, 877 and 1791 h–1, respectively. The dual role of the ligand in the mechanism of the dehydrogenation reaction was studied by 1H and 31P NMR spectroscopy and DFT calculations. Besides functioning as an internal base, bisMETAMORPhos also assists in the pre-assembly of formic acid within the Ir-coordination sphere and aids in stabilizing the rate-determining transition state through hydrogen-bonding.
Collapse
Affiliation(s)
- Sander Oldenhof
- van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH , Amsterdam , The Netherlands .
| | - Martin Lutz
- Bijvoet Center for Biomolecular Research , Utrecht University , Padualaan 8 , 3584 CH , Utrecht , The Netherlands
| | - Bas de Bruin
- van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH , Amsterdam , The Netherlands .
| | - Jarl Ivar van der Vlugt
- van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH , Amsterdam , The Netherlands .
| | - Joost N H Reek
- van 't Hoff Institute for Molecular Sciences , University of Amsterdam , Science Park 904 , 1098 XH , Amsterdam , The Netherlands .
| |
Collapse
|
243
|
LaBelle EV, Marshall CW, Gilbert JA, May HD. Influence of acidic pH on hydrogen and acetate production by an electrosynthetic microbiome. PLoS One 2014; 9:e109935. [PMID: 25333313 PMCID: PMC4198145 DOI: 10.1371/journal.pone.0109935] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 09/09/2014] [Indexed: 12/02/2022] Open
Abstract
Production of hydrogen and organic compounds by an electrosynthetic microbiome using electrodes and carbon dioxide as sole electron donor and carbon source, respectively, was examined after exposure to acidic pH (∼5). Hydrogen production by biocathodes poised at −600 mV vs. SHE increased>100-fold and acetate production ceased at acidic pH, but ∼5–15 mM (catholyte volume)/day acetate and>1,000 mM/day hydrogen were attained at pH ∼6.5 following repeated exposure to acidic pH. Cyclic voltammetry revealed a 250 mV decrease in hydrogen overpotential and a maximum current density of 12.2 mA/cm2 at −765 mV (0.065 mA/cm2 sterile control at −800 mV) by the Acetobacterium-dominated community. Supplying −800 mV to the microbiome after repeated exposure to acidic pH resulted in up to 2.6 kg/m3/day hydrogen (≈2.6 gallons gasoline equivalent), 0.7 kg/m3/day formate, and 3.1 kg/m3/day acetate ( = 4.7 kg CO2 captured).
Collapse
Affiliation(s)
- Edward V. LaBelle
- Department of Microbiology & Immunology, Marine Biomedicine & Environmental Science Center, Hollings Marine Laboratory, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Christopher W. Marshall
- Institute for Genomic and Systems Biology, Argonne National Laboratory, Argonne, Illinois, United States of America
| | - Jack A. Gilbert
- Institute for Genomic and Systems Biology, Argonne National Laboratory, Argonne, Illinois, United States of America
- Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America
- Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Harold D. May
- Department of Microbiology & Immunology, Marine Biomedicine & Environmental Science Center, Hollings Marine Laboratory, Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail:
| |
Collapse
|
244
|
Machan CW, Chabolla SA, Yin J, Gilson MK, Tezcan FA, Kubiak CP. Supramolecular Assembly Promotes the Electrocatalytic Reduction of Carbon Dioxide by Re(I) Bipyridine Catalysts at a Lower Overpotential. J Am Chem Soc 2014; 136:14598-607. [DOI: 10.1021/ja5085282] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Charles W. Machan
- Department
of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Steven A. Chabolla
- Department
of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Jian Yin
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0736, United States
| | - Michael K. Gilson
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0736, United States
| | - F. Akif Tezcan
- Department
of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Clifford P. Kubiak
- Department
of Chemistry and Biochemistry, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| |
Collapse
|
245
|
Biological conversion of methane to liquid fuels: status and opportunities. Biotechnol Adv 2014; 32:1460-75. [PMID: 25281583 DOI: 10.1016/j.biotechadv.2014.09.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 09/01/2014] [Accepted: 09/24/2014] [Indexed: 12/21/2022]
Abstract
Methane is the main component of natural gas and biogas. As an abundant energy source, methane is crucial not only to meet current energy needs but also to achieve a sustainable energy future. Conversion of methane to liquid fuels provides energy-dense products and therefore reduces costs for storage, transportation, and distribution. Compared to thermochemical processes, biological conversion has advantages such as high conversion efficiency and using environmentally friendly processes. This paper is a comprehensive review of studies on three promising groups of microorganisms (methanotrophs, ammonia-oxidizing bacteria, and acetogens) that hold potential in converting methane to liquid fuels; their habitats, biochemical conversion mechanisms, performance in liquid fuels production, and genetic modification to enhance the conversion are also discussed. To date, methane-to-methanol conversion efficiencies (moles of methanol produced per mole methane consumed) of up to 80% have been reported. A number of issues that impede scale-up of this technology, such as mass transfer limitations of methane, inhibitory effects of H2S in biogas, usage of expensive chemicals as electron donors, and lack of native strains capable of converting methane to liquid fuels other than methanol, are discussed. Future perspectives and strategies in addressing these challenges are also discussed.
Collapse
|
246
|
Expression of the NAD-dependent FDH1 β-subunit from Methylobacterium extorquens AM1 in Escherichia coli and its characterization. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-014-0126-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
247
|
Tory J, Setterfield‐Price B, Dryfe RAW, Hartl F. [M(CO)
4
(2,2′‐bipyridine)] (M=Cr, Mo, W) Complexes as Efficient Catalysts for Electrochemical Reduction of CO
2
at a Gold Electrode. ChemElectroChem 2014. [DOI: 10.1002/celc.201402282] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Joanne Tory
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6 AD (UK)
| | | | | | - František Hartl
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6 AD (UK)
| |
Collapse
|
248
|
Luz RAS, Pereira AR, de Souza JCP, Sales FCPF, Crespilho FN. Enzyme Biofuel Cells: Thermodynamics, Kinetics and Challenges in Applicability. ChemElectroChem 2014. [DOI: 10.1002/celc.201402141] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
249
|
Noborikawa J, Lau J, Ta J, Hu S, Scudiero L, Derakhshan S, Ha S, Haan JL. Palladium-Copper Electrocatalyst for Promotion of Oxidation of Formate and Ethanol in Alkaline Media. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.04.188] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
250
|
Efficient CO2-reducing activity of NAD-dependent formate dehydrogenase from Thiobacillus sp. KNK65MA for formate production from CO2 gas. PLoS One 2014; 9:e103111. [PMID: 25061666 PMCID: PMC4111417 DOI: 10.1371/journal.pone.0103111] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/27/2014] [Indexed: 11/19/2022] Open
Abstract
NAD-dependent formate dehydrogenase (FDH) from Candida boidinii (CbFDH) has been widely used in various CO2-reduction systems but its practical applications are often impeded due to low CO2-reducing activity. In this study, we demonstrated superior CO2-reducing properties of FDH from Thiobacillus sp. KNK65MA (TsFDH) for production of formate from CO2 gas. To discover more efficient CO2-reducing FDHs than a reference enzyme, i.e. CbFDH, five FDHs were selected with biochemical properties and then, their CO2-reducing activities were evaluated. All FDHs including CbFDH showed better CO2-reducing activities at acidic pHs than at neutral pHs and four FDHs were more active than CbFDH in the CO2 reduction reaction. In particular, the FDH from Thiobacillus sp. KNK65MA (TsFDH) exhibited the highest CO2-reducing activity and had a dramatic preference for the reduction reaction, i.e., a 84.2-fold higher ratio of CO2 reduction to formate oxidation in catalytic efficiency (kcat/KB) compared to CbFDH. Formate was produced from CO2 gas using TsFDH and CbFDH, and TsFDH showed a 5.8-fold higher formate production rate than CbFDH. A sequence and structural comparison showed that FDHs with relatively high CO2-reducing activities had elongated N- and C-terminal loops. The experimental results demonstrate that TsFDH can be an alternative to CbFDH as a biocatalyst in CO2 reduction systems.
Collapse
|