1
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Gao BC, Sun YF, Tian Y, Shi Y, Zhang ZG, Mao GL. Direct de/carboxylation of cannabidiolic acid (CBDA) and cannabidiol (CBD) from hemp plant material under supercritical CO 2. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2024:1-7. [PMID: 38676379 DOI: 10.1080/10286020.2024.2345825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
Many organic reactions rely on CO2 sources to generate important structural units and valuable chemicals. In this study, we compared the effects of cannabidiol (CBD) and cannabidiolic acid (CBDA) on the supercritical CO2 (scCO2)-induced de/carboxylation reaction. The results showed that CBD was directly carboxylated in the ortho-position to form CBDA with up to 62% conversion. Meanwhile, CBDA decarboxylation occurred on hemp plant material via varying composition. Mechanistic studies revealed that CBD carboxylation was influenced not only by the physical properties of scCO2, but also by the vegetable matrix.
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Affiliation(s)
- Bao-Chang Gao
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163316, China
- Institute of Phytochemistry, Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163316, China
| | - Yu-Feng Sun
- Institute of Phytochemistry, Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163316, China
| | - Yuan Tian
- Institute of Phytochemistry, Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163316, China
| | - Yu Shi
- Institute of Phytochemistry, Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163316, China
| | - Zhi-Guo Zhang
- Institute of Phytochemistry, Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163316, China
| | - Guo-Liang Mao
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163316, China
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2
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Wang X, Zhou M, Yao T, Li Y, Xu J, Xu N, Liu X. A pushed biosynthesis of 2,6-dihydroxybenzoic acid by the recombinant 2,3-dihydroxybenzoic acid decarboxylase immobilized on novel amino-modified lignin-containing cellulose nanocrystal aerogel. BIORESOURCE TECHNOLOGY 2024; 394:130218. [PMID: 38109976 DOI: 10.1016/j.biortech.2023.130218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/20/2023]
Abstract
Production of 2,6-dihydroxybenzoic acid (2,6-DHBA) via enzymatic carboxylation of resorcinol by decarboxylases is of great promising but shows depressed equilibrium conversion. In this study, 2,3-dihydroxybenzoic acid decarboxylase from Aspergillus oryzae (2,3-DHBD_Ao) pushing the conversion towards carboxylation for efficient 2,6-DHBA biosynthesis was achieved. Meanwhile, a novel amino-modified and lignin-doped cellulose nanocrystal aerogel (A-LCNCA) with high specific surface area and prominent CO2 capture was prepared for 2,3-DHBD_Ao immobilization. 2,3-DHBD_Ao@A-LCNC contributed a further enhanced conversion of carboxylation with the maximal conversion of 76.2 %, which was correlated to both the activity of 2,3-DHBD_Ao and the high CO2 loading capacity of A-LCNCA. Moreover, 2,3-DHBD_Ao@A-LCNC exhibited superior performances in a wider range of temperature and higher concentrations of substrate, with a prolonged storage period longer than 30 days. After seven cycles reuse, 2,3-DHBD_Ao@A-LCNCA could retain 85.3 % of its original activity. These results suggest a considerable potential of 2,3-DHBD_Ao@A-LCNCA in the selective biosynthesis of 2,6-DHBA.
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Affiliation(s)
- Xiaoyu Wang
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Minghao Zhou
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Tiange Yao
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Yuan Li
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Jiaxing Xu
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Huaian, China
| | - Ning Xu
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China
| | - Xiaoyan Liu
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology, Huaiyin Normal University, Huaian, China; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Huaian, China.
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3
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Fan Y, Wu S, Shi J, Li X, Yang Y, Feng Y, Xue S. The catalytic mechanism of direction-dependent interactions for 2,3-dihydroxybenzoate decarboxylase. Appl Microbiol Biotechnol 2023; 107:7451-7462. [PMID: 37851105 DOI: 10.1007/s00253-023-12813-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/19/2023]
Abstract
Benzoic acid decarboxylases offer an elegant alternative to CO2 fixation by reverse reaction-carboxylation, which is named the bio-Kolbe-Schmitt reaction, but they are unfavorable to carboxylation. Enhancing the carboxylation efficiency of reversible benzoic acid decarboxylases is restricted by the unexplained carboxylation mechanisms. The direction of reversible enzyme catalytic reactions depends on whether catalytic residues at the active center of the enzyme are protonated, which is subjected by the pH. Therefore, the forward and reverse reactions could be separated at different pH values. Reversible 2,3-dihydroxybenzoate acid decarboxylase undergoes decarboxylation at pH 5.0 and carboxylation at pH 8.6. However, it is unknown whether the interaction of enzymes with substrates and products in the forward and reverse reactions can be exploited to improve the catalytic activity of reversible enzymes in the unfavorable direction. Here, we identify a V-shaped tunnel of 2,3-dihydroxybenzoic acid decarboxylase from Aspergillus oryzae (2,3-DHBD_Ao) through which the substrate travels in the enzyme, and demonstrate that the side chain conformation of a tyrosine residue controls the entry and exit of substrate/product during reversible reactions. Together with the kinetic studies of the mutants, it is clarified that interactions between substrate/product traveling through the enzyme tunnel in 2,3-DHBD_Ao are direction-dependent. These results enrich the understanding of the interactions of substrates/products with macromolecular reversible enzymes in different reaction directions, thereby demonstrating a possible path for engineering decarboxylases with higher carboxylation efficiency. KEY POINTS: • The residue Trp23 of 2,3-DHBD_Ao served as a switch to control the entry and exit of catechol • A V-shaped tunnel of 2,3-DHBD_Ao for decarboxylation and carboxylation reactions was identified • The results provide a promising strategy for engineering decarboxylases with direction-dependent residues inside the substrate/product traveling tunnel of the enzyme.
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Affiliation(s)
- Yan Fan
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
- Department of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Sijin Wu
- Laboratory of Molecular Modeling and Design, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jianping Shi
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Xianglong Li
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Yongliang Yang
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Yanbin Feng
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China.
| | - Song Xue
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China.
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4
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Zhou Y, Zhang S, Huang S, Fan X, Su H, Tan T. De novo biosynthesis of 2-hydroxyterephthalic acid, the monomer for high-performance hydroxyl modified PBO fiber, by enzymatic Kolbe-Schmitt reaction with CO 2 fixation. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:179. [PMID: 37986026 PMCID: PMC10662693 DOI: 10.1186/s13068-023-02413-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/18/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND High-performance poly(p-phenylenebenzobisoxazole) (PBO) fiber, with excellent mechanical properties (stiffness, strength, and toughness), high thermal stability combined and light weight, are widely employed in automotive and aerospace composites, body armor and sports goods. Hydroxyl modified PBO (HPBO) fiber shows better photostability and interfacial shear strength. 2-Hydroxyterephthalic acid (2-HTA), the monomer for the HPBO fiber, is usually synthesized by chemical method, which has poor space selectivity and high energy consumption. The enzymatic Kolbe-Schmitt reaction, which carboxylates phenolic substrates to generate hydroxybenzoic acids with bicarbonate/CO2, was applied in de novo biosynthesis of 2-HTA with CO2 fixation. RESULTS The biosynthesis of 2-HTA was achieved by the innovative application of hydroxybenzoic acid (de)carboxylases to carboxylation of 3-hydroxybenzoic acid (3-HBA) at the para-position of the benzene carboxyl group, known as enzymatic Kolbe-Schmitt reaction. 2,3-Dihydroxybenzoic acid decarboxylase from Aspergillus oryzae (2,3-DHBD_Ao) were expressed in recombinant E. coli and showed highest activity. The yield of 2-HTA was 108.97 ± 2.21 μg/L/mg protein in the whole-cell catalysis. In addition, two amino acid substitutions, F27G and T62A, proved to be of great help in improving 2,3-DHBD activity. The double site mutation F27G/T62A increased the production of 2-HTA in the whole-cell catalysis by 24.7-fold, reaching 2.69 ± 0.029 mg/L/mg protein. Moreover, de novo biosynthetic pathway of 2-HTA was constructed by co-expression of 2,3-DHBD_Ao and 3-hydroxybenzoate synthase Hyg5 in S. cerevisiae S288C with Ura3, Aro7 and Trp3 knockout. The engineered strain synthesized 45.40 ± 0.28 μg/L 2-HTA at 36 h in the CO2 environment. CONCLUSIONS De novo synthesis of 2-HTA has been achieved, using glucose as a raw material to generate shikimic acid, chorismic acid, and 3-HBA, and finally 2-HTA. We demonstrate the strong potential of hydroxybenzoate (de)carboxylase to produce terephthalic acid and its derivatives with CO2 fixation.
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Affiliation(s)
- Yali Zhou
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China
| | - Shiding Zhang
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China
| | - Shiming Huang
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China
| | - Xuanhe Fan
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China
| | - Haijia Su
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China
| | - Tianwei Tan
- National Energy R&D Center for Biorefnery, Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 North 3Rd Ring Rd East, Beijing, 100029, People's Republic of China.
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5
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Bierbaumer S, Nattermann M, Schulz L, Zschoche R, Erb TJ, Winkler CK, Tinzl M, Glueck SM. Enzymatic Conversion of CO 2: From Natural to Artificial Utilization. Chem Rev 2023; 123:5702-5754. [PMID: 36692850 PMCID: PMC10176493 DOI: 10.1021/acs.chemrev.2c00581] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Enzymatic carbon dioxide fixation is one of the most important metabolic reactions as it allows the capture of inorganic carbon from the atmosphere and its conversion into organic biomass. However, due to the often unfavorable thermodynamics and the difficulties associated with the utilization of CO2, a gaseous substrate that is found in comparatively low concentrations in the atmosphere, such reactions remain challenging for biotechnological applications. Nature has tackled these problems by evolution of dedicated CO2-fixing enzymes, i.e., carboxylases, and embedding them in complex metabolic pathways. Biotechnology employs such carboxylating and decarboxylating enzymes for the carboxylation of aromatic and aliphatic substrates either by embedding them into more complex reaction cascades or by shifting the reaction equilibrium via reaction engineering. This review aims to provide an overview of natural CO2-fixing enzymes and their mechanistic similarities. We also discuss biocatalytic applications of carboxylases and decarboxylases for the synthesis of valuable products and provide a separate summary of strategies to improve the efficiency of such processes. We briefly summarize natural CO2 fixation pathways, provide a roadmap for the design and implementation of artificial carbon fixation pathways, and highlight examples of biocatalytic cascades involving carboxylases. Additionally, we suggest that biochemical utilization of reduced CO2 derivates, such as formate or methanol, represents a suitable alternative to direct use of CO2 and provide several examples. Our discussion closes with a techno-economic perspective on enzymatic CO2 fixation and its potential to reduce CO2 emissions.
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Affiliation(s)
- Sarah Bierbaumer
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Maren Nattermann
- Department of Biochemistry and Synthetic Metabolism, Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Straße 10, 35043 Marburg, Germany
| | - Luca Schulz
- Department of Biochemistry and Synthetic Metabolism, Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Straße 10, 35043 Marburg, Germany
| | | | - Tobias J Erb
- Department of Biochemistry and Synthetic Metabolism, Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Straße 10, 35043 Marburg, Germany
| | - Christoph K Winkler
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Matthias Tinzl
- Department of Biochemistry and Synthetic Metabolism, Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch Straße 10, 35043 Marburg, Germany
| | - Silvia M Glueck
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz, Austria
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6
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A Combined Computational–Experimental Study on the Substrate Binding and Reaction Mechanism of Salicylic Acid Decarboxylase. Catalysts 2022. [DOI: 10.3390/catal12121577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Salicylic acid decarboxylase (SDC) from the amidohydrolase superfamily (AHS) catalyzes the reversible decarboxylation of salicylic acid to form phenol. In this study, the substrate binding mode and reaction mechanism of SDC were investigated using computational and crystallographic methods. Quantum chemical calculations show that the enzyme follows the general mechanism of AHS decarboxylases. Namely, the reaction begins with proton transfer from a metal-coordinated aspartic acid residue (Asp298 in SDC) to the C1 of salicylic acid, which is followed by the C–C bond cleavage, to generate the phenol product and release CO2. Interestingly, the calculations show that SDC is a Mg-dependent enzyme rather than the previously proposed Zn-dependent, and the substrate is shown to be bidentately coordinated to the metal center in the catalysis, which is also different from the previous proposal. These predictions are corroborated by the crystal structure of SDC solved in complex with the substrate analogue 2-nitrophenol. The mechanistic insights into SDC in the present study provide important information for the rational design of the enzyme.
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7
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Müller M, Germer P, Andexer JN. Biocatalytic One-Carbon Transfer – A Review. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
AbstractThis review provides an overview of different C1 building blocks as substrates of enzymes, or part of their cofactors, and the resulting functionalized products. There is an emphasis on the broad range of possibilities of biocatalytic one-carbon extensions with C1 sources of different oxidation states. The identification of uncommon biosynthetic strategies, many of which might serve as templates for synthetic or biotechnological applications, towards one-carbon extensions is supported by recent genomic and metabolomic progress and hence we refer principally to literature spanning from 2014 to 2020.1 Introduction2 Methane, Methanol, and Methylamine3 Glycine4 Nitromethane5 SAM and SAM Ylide6 Other C1 Building Blocks7 Formaldehyde and Glyoxylate as Formaldehyde Equivalents8 Cyanide9 Formic Acid10 Formyl-CoA and Oxalyl-CoA11 Carbon Monoxide12 Carbon Dioxide13 Conclusions
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8
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Bloor S, Michurin I, Titchiner GR, Leys D. Prenylated flavins: structures and mechanisms. FEBS J 2022; 290:2232-2245. [PMID: 35073609 DOI: 10.1111/febs.16371] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/05/2022] [Accepted: 01/21/2022] [Indexed: 11/28/2022]
Abstract
The UbiX/UbiD system is widespread in microbes and responsible for the reversible decarboxylation of unsaturated carboxylic acids. The UbiD enzyme catalyzes this unusual reaction using a prenylated flavin (prFMN) as cofactor, the latter formed by the flavin prenyltransferase UbiX. A detailed picture of the biochemistry of flavin prenylation, oxidative maturation, and covalent catalysis underpinning reversible decarboxylation is emerging. This reveals the prFMN cofactor can undergo a wide range of transformations, complemented by considerable UbiD-variability. These provide a blueprint for biotechnological applications aimed at producing hydrocarbons or aromatic C-H activation through carboxylation.
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Affiliation(s)
- Samuel Bloor
- Department of Chemistry, Manchester Institute of Biotechnology, UK
| | | | | | - David Leys
- Department of Chemistry, Manchester Institute of Biotechnology, UK
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9
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Sheng X, Himo F. Mechanisms of metal-dependent non-redox decarboxylases from quantum chemical calculations. Comput Struct Biotechnol J 2021; 19:3176-3186. [PMID: 34141138 PMCID: PMC8187880 DOI: 10.1016/j.csbj.2021.05.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 11/18/2022] Open
Abstract
Quantum chemical calculations are today an extremely valuable tool for studying enzymatic reaction mechanisms. In this mini-review, we summarize our recent work on several metal-dependent decarboxylases, where we used the so-called cluster approach to decipher the details of the reaction mechanisms, including elucidation of the identity of the metal cofactors and the origins of substrate specificity. Decarboxylases are of growing potential for biocatalytic applications, as they can be used in the synthesis of novel compounds of, e.g., pharmaceutical interest. They can also be employed in the reverse direction, providing a strategy to synthesize value‐added chemicals by CO2 fixation. A number of non-redox metal-dependent decarboxylases from the amidohydrolase superfamily have been demonstrated to have promiscuous carboxylation activities and have attracted great attention in the recent years. The computational mechanistic studies provide insights that are important for the further modification and utilization of these enzymes in industrial processes. The discussed enzymes are: 5‐carboxyvanillate decarboxylase, γ‐resorcylate decarboxylase, 2,3‐dihydroxybenzoic acid decarboxylase, and iso-orotate decarboxylase.
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Key Words
- 2,3-DHBD, 2,3‐dihydroxybenzoic acid decarboxylase
- 2,6-DHBD, 2,6‐dihydroxybenzoic acid decarboxylase
- 2-NR, 2-nitroresorcinol
- 5-CV, 5-carboxyvanillate
- 5-NV, 5-nitrovanillate
- 5caU, 5-carboxyuracil
- AHS, amidohydrolase superfamily
- Biocatalysis
- Decarboxylase
- Density functional theory
- IDCase, iso-orotate decarboxylase
- LigW, 5‐carboxyvanillate decarboxylase
- MIMS, membrane inlet mass spectrometry
- QM/MM, quantum mechanics/molecular mechanics
- Reaction mechanism
- Transition state
- γ-RS, γ-resorcylate
- γ-RSD, γ‐resorcylate decarboxylase
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Affiliation(s)
- Xiang Sheng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology, Tianjin 300308, PR China
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden
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10
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Aleku GA, Roberts GW, Titchiner GR, Leys D. Synthetic Enzyme-Catalyzed CO 2 Fixation Reactions. CHEMSUSCHEM 2021; 14:1781-1804. [PMID: 33631048 PMCID: PMC8252502 DOI: 10.1002/cssc.202100159] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/25/2021] [Indexed: 05/11/2023]
Abstract
In recent years, (de)carboxylases that catalyze reversible (de)carboxylation have been targeted for application as carboxylation catalysts. This has led to the development of proof-of-concept (bio)synthetic CO2 fixation routes for chemical production. However, further progress towards industrial application has been hampered by the thermodynamic constraint that accompanies fixing CO2 to organic molecules. In this Review, biocatalytic carboxylation methods are discussed with emphases on the diverse strategies devised to alleviate the inherent thermodynamic constraints and their application in synthetic CO2 -fixation cascades.
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Affiliation(s)
- Godwin A. Aleku
- Department of BiochemistryUniversity of Cambridge80 Tennis Court RoadCambridgeCB2 1GAUK
| | - George W. Roberts
- Manchester Institute of BiotechnologyDepartment of ChemistryUniversity of Manchester131 Princess StreetManchesterM1 7DNUK
| | - Gabriel R. Titchiner
- Manchester Institute of BiotechnologyDepartment of ChemistryUniversity of Manchester131 Princess StreetManchesterM1 7DNUK
| | - David Leys
- Manchester Institute of BiotechnologyDepartment of ChemistryUniversity of Manchester131 Princess StreetManchesterM1 7DNUK
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11
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Hofer G, Sheng X, Braeuer S, Payer SE, Plasch K, Goessler W, Faber K, Keller W, Himo F, Glueck SM. Metal Ion Promiscuity and Structure of 2,3-Dihydroxybenzoic Acid Decarboxylase of Aspergillus oryzae. Chembiochem 2021; 22:652-656. [PMID: 33090643 PMCID: PMC7894528 DOI: 10.1002/cbic.202000600] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/06/2020] [Indexed: 12/19/2022]
Abstract
Broad substrate tolerance and excellent regioselectivity, as well as independence from sensitive cofactors have established benzoic acid decarboxylases from microbial sources as efficient biocatalysts. Robustness under process conditions makes them particularly attractive for preparative-scale applications. The divalent metal-dependent enzymes are capable of catalyzing the reversible non-oxidative (de)carboxylation of a variety of electron-rich (hetero)aromatic substrates analogously to the chemical Kolbe-Schmitt reaction. Elemental mass spectrometry supported by crystal structure elucidation and quantum chemical calculations verified the presence of a catalytically relevant Mg2+ complexed in the active site of 2,3-dihydroxybenoic acid decarboxylase from Aspergillus oryzae (2,3-DHBD_Ao). This unique example with respect to the nature of the metal is in contrast to mechanistically related decarboxylases, which generally have Zn2+ or Mn2+ as the catalytically active metal.
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Affiliation(s)
- Gerhard Hofer
- Institute of Molecular BiosciencesBioTechMed GrazUniversity of Graz8010GrazAustria
| | - Xiang Sheng
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Simone Braeuer
- Department of Chemistry, Analytical ChemistryUniversity of Graz8010GrazAustria
| | - Stefan E. Payer
- Department of Chemistry, Organic & Bioorganic ChemistryUniversity of Graz8010GrazAustria
| | - Katharina Plasch
- Department of Chemistry, Organic & Bioorganic ChemistryUniversity of Graz8010GrazAustria
| | - Walter Goessler
- Department of Chemistry, Analytical ChemistryUniversity of Graz8010GrazAustria
| | - Kurt Faber
- Department of Chemistry, Organic & Bioorganic ChemistryUniversity of Graz8010GrazAustria
| | - Walter Keller
- Institute of Molecular BiosciencesBioTechMed GrazUniversity of Graz8010GrazAustria
| | - Fahmi Himo
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Silvia M. Glueck
- Department of Chemistry, Organic & Bioorganic ChemistryUniversity of Graz8010GrazAustria
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12
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Gaikwad VV, Mane PA, Dey S, Bhanage BM. Dppf‐Ligated Palladium Complex as an Efficient Catalyst for the Synthesis of Biaryl Ketones Using Co
2
(CO)
8
as a C1 Source with High TON and TOF. ChemistrySelect 2019. [DOI: 10.1002/slct.201901930] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Vinayak V. Gaikwad
- Department of Chemistry, Institute of Chemical TechnologyN.Parekh Marg, Matunga, Mumbai 400 019 Maharashtra India)
| | - Pravin A. Mane
- Chemistry Division, Bhabha Atomic Research Centre Mumbai 400 085 India
| | - Sandip Dey
- Chemistry Division, Bhabha Atomic Research Centre Mumbai 400 085 India
- Homi Bhabha National InstituteTraining School Complex Mumbai 400 094 India
| | - Bhalchandra M. Bhanage
- Department of Chemistry, Institute of Chemical TechnologyN.Parekh Marg, Matunga, Mumbai 400 019 Maharashtra India)
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13
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Bernhardsgrütter I, Schell K, Peter DM, Borjian F, Saez DA, Vöhringer-Martinez E, Erb TJ. Awakening the Sleeping Carboxylase Function of Enzymes: Engineering the Natural CO 2-Binding Potential of Reductases. J Am Chem Soc 2019; 141:9778-9782. [PMID: 31188584 PMCID: PMC6650136 DOI: 10.1021/jacs.9b03431] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
![]()
Developing new carbon
dioxide (CO2) fixing enzymes is
a prerequisite to create new biocatalysts for diverse applications
in chemistry, biotechnology and synthetic biology. Here we used bioinformatics
to identify a “sleeping carboxylase function” in the
superfamily of medium-chain dehydrogenases/reductases (MDR), i.e.
enzymes that possess a low carboxylation side activity next to their
original enzyme reaction. We show that propionyl-CoA synthase from Erythrobacter sp. NAP1, as well as an acrylyl-CoA
reductase from Nitrosopumilus maritimus possess carboxylation yields of 3 ± 1 and 4.5 ± 0.9%.
We use rational design to engineer these enzymes further into carboxylases
by increasing interactions of the proteins with CO2 and
suppressing diffusion of water to the active site. The engineered
carboxylases show improved CO2-binding and kinetic parameters
comparable to naturally existing CO2-fixing enzymes. Our
results provide a strategy to develop novel CO2-fixing
enzymes and shed light on the emergence of natural carboxylases during
evolution.
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Affiliation(s)
- Iria Bernhardsgrütter
- Department of Biochemistry and Synthetic Metabolism , Max Planck Institute for Terrestrial Microbiology , Karl-von-Frisch-Straße 10 , D-35043 Marburg , Germany
| | - Kristina Schell
- Department of Biochemistry and Synthetic Metabolism , Max Planck Institute for Terrestrial Microbiology , Karl-von-Frisch-Straße 10 , D-35043 Marburg , Germany
| | - Dominik M Peter
- Department of Biochemistry and Synthetic Metabolism , Max Planck Institute for Terrestrial Microbiology , Karl-von-Frisch-Straße 10 , D-35043 Marburg , Germany
| | - Farshad Borjian
- Institute for Molecular Microbiology and Biotechnology, University of Münster , Corrensstr. 3 , D-48149 Münster , Germany
| | - David Adrian Saez
- Departamento de Físico Química, Facultad de Ciencias Químicas , Universidad de Concepción , 1290 Concepción , Chile
| | - Esteban Vöhringer-Martinez
- Departamento de Físico Química, Facultad de Ciencias Químicas , Universidad de Concepción , 1290 Concepción , Chile
| | - Tobias J Erb
- Department of Biochemistry and Synthetic Metabolism , Max Planck Institute for Terrestrial Microbiology , Karl-von-Frisch-Straße 10 , D-35043 Marburg , Germany.,LOEWE Center for Synthetic Microbiology (Synmikro) , Karl-von-Frisch-Straße 16 , D-35043 Marburg , Germany
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14
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Payer SE, Faber K, Glueck SM. Non-Oxidative Enzymatic (De)Carboxylation of (Hetero)Aromatics and Acrylic Acid Derivatives. Adv Synth Catal 2019; 361:2402-2420. [PMID: 31379472 PMCID: PMC6644310 DOI: 10.1002/adsc.201900275] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/16/2019] [Indexed: 12/20/2022]
Abstract
The utilization of carbon dioxide as a C1-building block for the production of valuable chemicals has recently attracted much interest. Whereas chemical CO2 fixation is dominated by C-O and C-N bond forming reactions, the development of novel concepts for the carboxylation of C-nucleophiles, which leads to the formation of carboxylic acids, is highly desired. Beside transition metal catalysis, biocatalysis has emerged as an attractive method for the highly regioselective (de)carboxylation of electron-rich (hetero)aromatics, which has been recently further expanded to include conjugated α,β-unsaturated (acrylic) acid derivatives. Depending on the type of substrate, different classes of enzymes have been explored for (i) the ortho-carboxylation of phenols catalyzed by metal-dependent ortho-benzoic acid decarboxylases and (ii) the side-chain carboxylation of para-hydroxystyrenes mediated by metal-independent phenolic acid decarboxylases. Just recently, the portfolio of bio-carboxylation reactions was complemented by (iii) the para-carboxylation of phenols and the decarboxylation of electron-rich heterocyclic and acrylic acid derivatives mediated by prenylated FMN-dependent decarboxylases, which is the main focus of this review. Bio(de)carboxylation processes proceed under physiological reaction conditions employing bicarbonate or (pressurized) CO2 when running in the energetically uphill carboxylation direction. Aiming to facilitate the application of these enzymes in preparative-scale biotransformations, their catalytic mechanism and substrate scope are analyzed in this review.
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Affiliation(s)
- Stefan E. Payer
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Kurt Faber
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Silvia M. Glueck
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
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15
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Carboxylation of Hydroxyaromatic Compounds with HCO3− by Enzyme Catalysis: Recent Advances Open the Perspective for Valorization of Lignin-Derived Aromatics. Catalysts 2019. [DOI: 10.3390/catal9010037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
This review focuses on recent advances in the field of enzymatic carboxylation reactions of hydroxyaromatic compounds using HCO3− (as a CO2 source) to produce hydroxybenzoic and other phenolic acids in mild conditions with high selectivity and moderate to excellent yield. Nature offers an extensive portfolio of enzymes catalysing reversible decarboxylation of hydroxyaromatic acids, whose equilibrium can be pushed towards the side of the carboxylated products. Extensive structural and mutagenesis studies have allowed recent advances in the understanding of the reaction mechanism of decarboxylase enzymes, ultimately enabling an improved yield and expansion of the scope of the reaction. The topic is of particular relevance today as the scope of the carboxylation reactions can be extended to include lignin-related compounds in view of developing lignin biorefinery technology.
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16
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Sheng X, Plasch K, Payer SE, Ertl C, Hofer G, Keller W, Braeuer S, Goessler W, Glueck SM, Himo F, Faber K. Reaction Mechanism and Substrate Specificity of Iso-orotate Decarboxylase: A Combined Theoretical and Experimental Study. Front Chem 2018; 6:608. [PMID: 30619817 PMCID: PMC6305744 DOI: 10.3389/fchem.2018.00608] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 11/27/2018] [Indexed: 01/04/2023] Open
Abstract
The C-C bond cleavage catalyzed by metal-dependent iso-orotate decarboxylase (IDCase) from the thymidine salvage pathway is of interest for the elucidation of a (hypothetical) DNA demethylation pathway. IDCase appears also as a promising candidate for the synthetic regioselective carboxylation of N-heteroaromatics. Herein, we report a joint experimental-theoretical study to gain insights into the metal identity, reaction mechanism, and substrate specificity of IDCase. In contrast to previous assumptions, the enzyme is demonstrated by ICPMS/MS measurements to contain a catalytically relevant Mn2+ rather than Zn2+. Quantum chemical calculations revealed that decarboxylation of the natural substrate (5-carboxyuracil) proceeds via a (reverse) electrophilic aromatic substitution with formation of CO2. The occurrence of previously proposed tetrahedral carboxylate intermediates with concomitant formation of HCO3- could be ruled out on the basis of prohibitively high energy barriers. In contrast to related o-benzoic acid decarboxylases, such as γ-resorcylate decarboxylase and 5-carboxyvanillate decarboxylase, which exhibit a relaxed substrate tolerance for phenolic acids, IDCase shows high substrate fidelity. Structural and energy comparisons suggest that this is caused by a unique hydrogen bonding of the heterocyclic natural substrate (5-carboxyuracil) to the surrounding residues. Analysis of calculated energies also shows that the reverse carboxylation of uracil is impeded by a strongly disfavored uphill reaction.
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Affiliation(s)
- Xiang Sheng
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, Sweden
| | - Katharina Plasch
- Institute of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Graz, Austria
| | - Stefan E Payer
- Institute of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Graz, Austria
| | - Claudia Ertl
- Institute of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Graz, Austria
| | - Gerhard Hofer
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Walter Keller
- Institute of Molecular Biosciences, University of Graz, Graz, Austria
| | - Simone Braeuer
- Institute of Chemistry, Analytical Chemistry, University of Graz, Graz, Austria
| | - Walter Goessler
- Institute of Chemistry, Analytical Chemistry, University of Graz, Graz, Austria
| | - Silvia M Glueck
- Institute of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Graz, Austria.,Austrian Centre of Industrial Biotechnology (ACIB GmbH), Graz, Austria
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, Sweden
| | - Kurt Faber
- Institute of Chemistry, Organic & Bioorganic Chemistry, University of Graz, Graz, Austria
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