51
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Ghanty U, Wang T, Kohli RM. Nucleobase Modifiers Identify TET Enzymes as Bifunctional DNA Dioxygenases Capable of Direct N‐Demethylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Uday Ghanty
- Department of Medicine Department of Biochemistry and Biophysics University of Pennsylvania Philadelphia PA 19104 USA
| | - Tong Wang
- Graduate Group in Biochemistry and Molecular Biophysics University of Pennsylvania Philadelphia PA 19104 USA
| | - Rahul M. Kohli
- Department of Medicine Department of Biochemistry and Biophysics University of Pennsylvania Philadelphia PA 19104 USA
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52
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Edwards EH, Bren KL. Light-driven catalysis with engineered enzymes and biomimetic systems. Biotechnol Appl Biochem 2020; 67:463-483. [PMID: 32588914 DOI: 10.1002/bab.1976] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/21/2020] [Indexed: 01/01/2023]
Abstract
Efforts to drive catalytic reactions with light, inspired by natural processes like photosynthesis, have a long history and have seen significant recent growth. Successfully engineering systems using biomolecular and bioinspired catalysts to carry out light-driven chemical reactions capitalizes on advantages offered from the fields of biocatalysis and photocatalysis. In particular, driving reactions under mild conditions and in water, in which enzymes are operative, using sunlight as a renewable energy source yield environmentally friendly systems. Furthermore, using enzymes and bioinspired systems can take advantage of the high efficiency and specificity of biocatalysts. There are many challenges to overcome to fully capitalize on the potential of light-driven biocatalysis. In this mini-review, we discuss examples of enzymes and engineered biomolecular catalysts that are activated via electron transfer from a photosensitizer in a photocatalytic system. We place an emphasis on selected forefront chemical reactions of high interest, including CH oxidation, proton reduction, water oxidation, CO2 reduction, and N2 reduction.
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Affiliation(s)
- Emily H Edwards
- Department of Chemistry, University of Rochester, Rochester, NY, USA
| | - Kara L Bren
- Department of Chemistry, University of Rochester, Rochester, NY, USA
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53
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Liu X, Zhu X, Wang H, Liu T, Cheng J, Jiang H. Discovery and modification of cytochrome P450 for plant natural products biosynthesis. Synth Syst Biotechnol 2020; 5:187-199. [PMID: 32637672 PMCID: PMC7332504 DOI: 10.1016/j.synbio.2020.06.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 11/28/2022] Open
Abstract
Cytochrome P450s are widespread in nature and play key roles in the diversification and functional modification of plant natural products. Over the last few years, there has been remarkable progress in plant P450s identification with the rapid development of sequencing technology, "omics" analysis and synthetic biology. However, challenges still persist in respect of crystal structure, heterologous expression and enzyme engineering. Here, we reviewed several research hotspots of P450 enzymes involved in the biosynthesis of plant natural products, including P450 databases, gene mining, heterologous expression and protein engineering.
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Affiliation(s)
- Xiaonan Liu
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoxi Zhu
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hui Wang
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Tian Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China.,Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Jian Cheng
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
| | - Huifeng Jiang
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
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54
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Chen W, Fisher MJ, Leung A, Cao Y, Wong LL. Oxidative Diversification of Steroids by Nature-Inspired Scanning Glycine Mutagenesis of P450BM3 (CYP102A1). ACS Catal 2020. [DOI: 10.1021/acscatal.0c02077] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Wenyu Chen
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
| | - Matthew J. Fisher
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
| | - Aaron Leung
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
| | - Yang Cao
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
- Oxford Suzhou Centre for Advanced Research, Ruo Shui Road, Suzhou Industrial Park, Jiangsu 215123, P.R. China
| | - Luet L. Wong
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
- Oxford Suzhou Centre for Advanced Research, Ruo Shui Road, Suzhou Industrial Park, Jiangsu 215123, P.R. China
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55
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Girvin ZC, Lampkin PP, Liu X, Gellman SH. Catalytic Intramolecular Conjugate Additions of Aldehyde-Derived Enamines to α,β-Unsaturated Esters. Org Lett 2020; 22:4568-4573. [PMID: 32460501 DOI: 10.1021/acs.orglett.0c01666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report a pairing of known catalysts that enables intramolecular conjugate additions of aldehyde-derived enamines to α,β-unsaturated esters. Despite extensive prior exploration of conjugate additions of aldehyde-derived enamines, catalytic conjugate additions to unactivated enoate esters are unprecedented. Achieving enantioselective and diastereoselective six-membered ring formation requires the coordinated action of a chiral pyrrolidine, for nucleophilic activation of the aldehyde via enamine formation, and a hydrogen bond donor, for electrophilic activation of the enoate ester. Proper selection of the hydrogen bond donor is essential for chemoselectivity, which requires minimizing competition from homoaldol reaction. Utility is demonstrated in a six-step synthesis of (-)-yohimbane from cycloheptene.
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Affiliation(s)
- Zebediah C Girvin
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Philip P Lampkin
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Xinyu Liu
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Samuel H Gellman
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
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56
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Luirink RA, Verkade‐Vreeker MCA, Commandeur JNM, Geerke DP. A Modified Arrhenius Approach to Thermodynamically Study Regioselectivity in Cytochrome P450-Catalyzed Substrate Conversion. Chembiochem 2020; 21:1461-1472. [PMID: 31919943 PMCID: PMC7318578 DOI: 10.1002/cbic.201900751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Indexed: 12/21/2022]
Abstract
The regio- (and stereo-)selectivity and specific activity of cytochrome P450s are determined by the accessibility of potential sites of metabolism (SOMs) of the bound substrate relative to the heme, and the activation barrier of the regioselective oxidation reaction(s). The accessibility of potential SOMs depends on the relative binding free energy (ΔΔGbind ) of the catalytically active substrate-binding poses, and the probability of the substrate to adopt a transition-state geometry. An established experimental method to measure activation energies of enzymatic reactions is the analysis of reaction rate constants at different temperatures and the construction of Arrhenius plots. This is a challenge for multistep P450-catalyzed processes that involve redox partners. We introduce a modified Arrhenius approach to overcome the limitations in studying P450 selectivity, which can be applied in multiproduct enzyme catalysis. Our approach gives combined information on relative activation energies, ΔΔGbind values, and collision entropies, yielding direct insight into the basis of selectivity in substrate conversion.
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Affiliation(s)
- Rosa A. Luirink
- AIMMS Division of Molecular ToxicologyVrije UniversiteitDe Boelelaan 11081081 HZAmsterdamThe Netherlands
| | | | - Jan N. M. Commandeur
- AIMMS Division of Molecular ToxicologyVrije UniversiteitDe Boelelaan 11081081 HZAmsterdamThe Netherlands
| | - Daan P. Geerke
- AIMMS Division of Molecular ToxicologyVrije UniversiteitDe Boelelaan 11081081 HZAmsterdamThe Netherlands
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57
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Ghanty U, Wang T, Kohli RM. Nucleobase Modifiers Identify TET Enzymes as Bifunctional DNA Dioxygenases Capable of Direct N-Demethylation. Angew Chem Int Ed Engl 2020; 59:11312-11315. [PMID: 32271979 DOI: 10.1002/anie.202002751] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/26/2020] [Indexed: 02/04/2023]
Abstract
TET family enzymes are known for oxidation of the 5-methyl substituent on 5-methylcytosine (5mC) in DNA. 5mC oxidation generates the stable base 5-hydroxymethylcytosine (5hmC), starting an indirect, multi-step process that ends with reversion of 5mC to unmodified cytosine. While probing the nucleobase determinants of 5mC recognition, we discovered that TET enzymes are also proficient as direct N-demethylases of cytosine bases. We find that N-demethylase activity can be readily observed on substrates lacking a 5-methyl group and, remarkably, TET enzymes can be similarly proficient in either oxidation of 5mC or demethylation of N4-methyl substituents. Our results indicate that TET enzymes can act as both direct and indirect demethylases, highlight the active-site plasticity of these FeII /α-ketoglutarate-dependent dioxygenases, and suggest activity on unexplored substrates that could reveal new TET biology.
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Affiliation(s)
- Uday Ghanty
- Department of Medicine, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Tong Wang
- Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Rahul M Kohli
- Department of Medicine, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA, 19104, USA
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58
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Bart AG, Harris KL, Gillam EMJ, Scott EE. Structure of an ancestral mammalian family 1B1 cytochrome P450 with increased thermostability. J Biol Chem 2020; 295:5640-5653. [PMID: 32156703 PMCID: PMC7186169 DOI: 10.1074/jbc.ra119.010727] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 03/09/2020] [Indexed: 01/07/2023] Open
Abstract
Mammalian cytochrome P450 enzymes often metabolize many pharmaceuticals and other xenobiotics, a feature that is valuable in a biotechnology setting. However, extant P450 enzymes are typically relatively unstable, with T50 values of ∼30-40 °C. Reconstructed ancestral cytochrome P450 enzymes tend to have variable substrate selectivity compared with related extant forms, but they also have higher thermostability and therefore may be excellent tools for commercial biosynthesis of important intermediates, final drug molecules, or drug metabolites. The mammalian ancestor of the cytochrome P450 1B subfamily was herein characterized structurally and functionally, revealing differences from the extant human CYP1B1 in ligand binding, metabolism, and potential molecular contributors to its thermostability. Whereas extant human CYP1B1 has one molecule of α-naphthoflavone in a closed active site, we observed that subtle amino acid substitutions outside the active site in the ancestor CYP1B enzyme yielded an open active site with four ligand copies. A structure of the ancestor with 17β-estradiol revealed only one molecule in the active site, which still had the same open conformation. Detailed comparisons between the extant and ancestor forms revealed increases in electrostatic and aromatic interactions between distinct secondary structure elements in the ancestral forms that may contribute to their thermostability. To the best of our knowledge, this represents the first structural evaluation of a reconstructed ancestral cytochrome P450, revealing key features that appear to contribute to its thermostability.
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Affiliation(s)
- Aaron G Bart
- Program in Biophysics, University of Michigan, Ann Arbor, Michigan 48109
| | - Kurt L Harris
- School of Chemistry and Molecular Biosciences, University of Queensland St. Lucia, Brisbane 4072, Australia
| | - Elizabeth M J Gillam
- School of Chemistry and Molecular Biosciences, University of Queensland St. Lucia, Brisbane 4072, Australia
| | - Emily E Scott
- Program in Biophysics, University of Michigan, Ann Arbor, Michigan 48109; Departments of Medicinal Chemistry and Pharmacology, University of Michigan, Ann Arbor, Michigan 48109.
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59
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Bähr S, Brinkmann‐Chen S, Garcia‐Borràs M, Roberts JM, Katsoulis DE, Houk KN, Arnold FH. Selective Enzymatic Oxidation of Silanes to Silanols. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002861] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Susanne Bähr
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Blvd Pasadena CA 91125 USA
| | - Sabine Brinkmann‐Chen
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Blvd Pasadena CA 91125 USA
| | - Marc Garcia‐Borràs
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
- Present address: Institut de Química Computacional i Catàlisi (IQCC) Departament de Química Universitat de Girona Girona Spain
| | | | | | - K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Frances H. Arnold
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 East California Blvd Pasadena CA 91125 USA
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60
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Frank R, Prönnecke C, Azendorf R, Jahnke HG, Beck-Sickinger AG, Robitzki AA. Advanced 96-microtiter plate based bioelectrochemical platform reveals molecular short cut of electron flow in cytochrome P450 enzyme. LAB ON A CHIP 2020; 20:1449-1460. [PMID: 32219236 DOI: 10.1039/c9lc01220f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In bioelectrocatalysis, immobilised redox enzymes are activated in a bioelectronic interface without redox equivalents such as NADPH, thus enabling heterogeneous flow chemistry. The functional contact between enzyme and electrode requires a high degree of optimisation regarding choice of electrode material, electrode pre-treatment, enzyme immobilisation and reaction conditions. So far, however, there are no systems that can easily enable an optimisation procedure at a higher throughput. Here, we present an advanced platform with a vertical divided cell architecture in conjunction with a developed 96-multipotentiostat to be able to drive redox enzymes in 96 well microtiter plate based multielectrode arrays. This platform controls 96 independent three-electrode setups with arbitrary working electrode materials. We demonstrate its applicability in a mutation study of cytochrome P450 BM3 using indium tin oxide as electrode material and the 7-ethoxycoumarin product quantification assay. We show that the bioelectrocatalytic activity of P450 BM3 can be amplified when the cofactor FAD is erased from the enzyme by a single point mutation, so that FMN becomes the first electron entry point. Bioelectrocatalysis thus offers an approach to enzyme simplification as a remedy for the inherent instability of self-sufficient cytochrome P450 enzymes. In addition, we examined native and artificial enzyme activation with respect to ionic strength and buffer composition. The optimal conditions of the activation types differ substantially from each other and exhibit a new molecular facet in enzyme characteristics. In a proof-of-principle we demonstrate that the platform is also compatible with raw cell extracts, thus opening the door for random mutagenesis screenings.
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Affiliation(s)
- Ronny Frank
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Christoph Prönnecke
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Ronny Azendorf
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | - Heinz-Georg Jahnke
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
| | | | - Andrea A Robitzki
- Centre for Biotechnology and Biomedicine, Molecular biological-biochemical Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany.
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61
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Sørensen MLH, Sanders BC, Hicks LP, Rasmussen MH, Vishart AL, Kongsted J, Winkler JR, Gray HB, Hansen T. Hole Hopping through Cytochrome P450. J Phys Chem B 2020; 124:3065-3073. [PMID: 32175746 DOI: 10.1021/acs.jpcb.9b09414] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
High-potential iron-oxo species are intermediates in the catalytic cycles of oxygenase enzymes. They can cause heme degradation and irreversible oxidation of nearby amino acids. We have proposed that there are protective mechanisms in which hole hopping from oxidized hemes through tryptophan/tyrosine chains generates a surface-exposed amino-acid oxidant that could be rapidly disarmed by reaction with cellular reductants. In investigations of cytochrome P450BM3, we identified Trp96 as a critical residue that could play such a protective role. This Trp is cation-π paired with Arg398 in 81% of mammalian P450s. Here we report on the effect of the Trp/Arg cation-π interaction on Trp96 formal potentials as well as on electronic coupling strengths between Trp96 and the heme both for wild type cytochrome P450 and selected mutants. Mutation of Arg398 to His, which decreases the Trp96 formal potential, increases Trp-heme electronic coupling; however, surprisingly, the rate of phototriggered electron transfer from a Ru-sensitizer (through Trp96) to the P450BM3 heme was unaffected by the Arg398His mutation. We conclude that Trp96 has moved away from Arg398, suggesting that the protective mechanism for P450s with this Trp-Arg pair is conformationally gated.
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Affiliation(s)
- Mette L H Sørensen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen Ø, Denmark
| | - Brian C Sanders
- Environmental Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - L Perry Hicks
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Maria H Rasmussen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen Ø, Denmark
| | - Andreas L Vishart
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen Ø, Denmark
| | - Jacob Kongsted
- Department of Physics, Chemistry, and Pharmacy, University of Southern Denmark, Campusvej 55, DK 5230 Odense M, Denmark
| | - Jay R Winkler
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Harry B Gray
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
| | - Thorsten Hansen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK 2100 Copenhagen Ø, Denmark
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62
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Bokel A, Rühlmann A, Hutter MC, Urlacher VB. Enzyme-Mediated Two-Step Regio- and Stereoselective Synthesis of Potential Rapid-Acting Antidepressant (2S,6S)-Hydroxynorketamine. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05384] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ansgar Bokel
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Ansgar Rühlmann
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Michael C. Hutter
- Center for Bioinformatics, Saarland University, Campus E2.1, 66123 Saarbruecken, Germany
| | - Vlada B. Urlacher
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
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63
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Cao M, Gao M, Suástegui M, Mei Y, Shao Z. Building microbial factories for the production of aromatic amino acid pathway derivatives: From commodity chemicals to plant-sourced natural products. Metab Eng 2020; 58:94-132. [DOI: 10.1016/j.ymben.2019.08.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/03/2019] [Accepted: 08/07/2019] [Indexed: 01/23/2023]
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64
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Xie L, Chen K, Cui H, Wan N, Cui B, Han W, Chen Y. Characterization of a Self-Sufficient Cytochrome P450 Monooxygenase from Deinococcus apachensis for Enantioselective Benzylic Hydroxylation. Chembiochem 2020; 21:1820-1825. [PMID: 32012422 DOI: 10.1002/cbic.201900691] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/29/2020] [Indexed: 12/22/2022]
Abstract
A self-sufficient cytochrome P450 monooxygenase from Deinococcus apachensis (P450DA) was identified and successfully overexpressed in Escherichia coli BL21(DE3). P450DA would be a member of the CYP102D subfamily and assigned as CYP102D2 according to the phylogenetic tree and sequence alignment. Purification and characterization of the recombinant P450DA indicated both NADH and NADPH could be used by P450DA as a reducing cofactor. The recombinant E. coli (P450DA) strain was functionally active, showing excellent enantioselectivity for benzylic hydroxylation of methyl 2-phenylacetate. Further substrate scope studies revealed that P450DA is able to catalyze benzylic hydroxylation of a variety of compounds, affording the corresponding chiral benzylic alcohols in 86-99 % ee and 130-1020 total turnover numbers.
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Affiliation(s)
- Lingzhi Xie
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Ke Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Haibo Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Nanwei Wan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Baodong Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Wenyong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
| | - Yongzheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
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65
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Collins CH, Cirino PC. Commemorating Frances Arnold. AIChE J 2020. [DOI: 10.1002/aic.16924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cynthia H. Collins
- Department of Chemical and Biological EngineeringRensselaer Polytechnic Institute Troy New York
| | - Patrick C. Cirino
- Department of Chemical & Biomolecular EngineeringUniversity of Houston Houston Texas
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66
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Shang Y, Huang S. Engineering Plant Cytochrome P450s for Enhanced Synthesis of Natural Products: Past Achievements and Future Perspectives. PLANT COMMUNICATIONS 2020; 1:100012. [PMID: 33404545 PMCID: PMC7747987 DOI: 10.1016/j.xplc.2019.100012] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Cytochrome P450s (P450s) are the most versatile catalysts and are widely used by plants to synthesize a vast array of structurally diverse specialized metabolites that not only play essential ecological roles but also constitute a valuable resource for the development of new drugs. To accelerate the metabolic engineering of these high-value metabolites, it is imperative to identify and characterize pathway P450s, and to further improve their activities through protein engineering. In this review, we focus on P450 engineering and summarize the major strategies for enhancing the stability and activity of P450s and successful cases of P450 engineering. Studies in which the functions of P450s were altered to create de novo metabolic pathways or novel compounds are discussed as well. We also overview emerging tools, specifically DNA synthesis, machine learning, and de novo protein design, as well as the evolutionary patterns of P450s unveiled from a massive number of DNA sequences that could be integrated to accelerate the engineering of these enzymes. These approaches would greatly aid in the exploitation of plant-specialized metabolites or derivatives for various uses including medical applications.
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Affiliation(s)
- Yi Shang
- Key Laboratory for Potato Biology of Yunnan Province, The CAAS-YNNU-YINMORE Joint Academy of Potato Science, Yunnan Normal University, Kunming, China
| | - Sanwen Huang
- Lingnan Guangdong Laboratory of Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
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67
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Kanoh N, Kawamata-Asano A, Suzuki K, Takahashi Y, Miyazawa T, Nakamura T, Moriya T, Hirano H, Osada H, Iwabuchi Y, Takahashi S. An integrated screening system for the selection of exemplary substrates for natural and engineered cytochrome P450s. Sci Rep 2019; 9:18023. [PMID: 31792277 PMCID: PMC6888865 DOI: 10.1038/s41598-019-54473-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/14/2019] [Indexed: 11/26/2022] Open
Abstract
Information about substrate and product selectivity is critical for understanding the function of cytochrome P450 monooxygenases. In addition, comprehensive understanding of changes in substrate selectivity of P450 upon amino acid mutation would enable the design and creation of engineered P450s with desired selectivities. Therefore, systematic methods for obtaining such information are required. Herein, we developed an integrated P450 substrate screening system for the selection of “exemplary” substrates for a P450 of interest. The established screening system accurately selected the known exemplary substrates and also identified previously unknown exemplary substrates for microbial-derived P450s from a library containing sp3-rich synthetic small molecules. Synthetically potent transformations were also found by analyzing the reactions and oxidation products. The screening system was applied to analyze the substrate selectivity of the P450 BM3 mutants F87A and F87A/A330W, which acquired an ability to hydroxylate non-natural substrate steroids regio- and stereoselectively by two amino acid mutations. The distinct transition of exemplary substrates due to each single amino acid mutation was revealed, demonstrating the utility of the established system.
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Affiliation(s)
- Naoki Kanoh
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan. .,Institute of Medicinal Chemistry, Hoshi University, 2-4-1 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Ayano Kawamata-Asano
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Kana Suzuki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Yusuke Takahashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Takeshi Miyazawa
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takemichi Nakamura
- Molecular Structure Characterization Unit, Technology Platform Division, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takashi Moriya
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Hiroyuki Hirano
- Chemical Resource Development Research Unit, Technology Platform Division, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hiroyuki Osada
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,Chemical Resource Development Research Unit, Technology Platform Division, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Yoshiharu Iwabuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Shunji Takahashi
- Natural Product Biosynthesis Research Unit, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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68
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Directed evolution of carbon–hydrogen bond activating enzymes. Curr Opin Biotechnol 2019; 60:29-38. [DOI: 10.1016/j.copbio.2018.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/19/2018] [Accepted: 12/03/2018] [Indexed: 12/26/2022]
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69
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Helfrich EJN, Lin GM, Voigt CA, Clardy J. Bacterial terpene biosynthesis: challenges and opportunities for pathway engineering. Beilstein J Org Chem 2019; 15:2889-2906. [PMID: 31839835 PMCID: PMC6902898 DOI: 10.3762/bjoc.15.283] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/01/2019] [Indexed: 12/27/2022] Open
Abstract
Terpenoids are the largest and structurally most diverse class of natural products. They possess potent and specific biological activity in multiple assays and against diseases, including cancer and malaria as notable examples. Although the number of characterized terpenoid molecules is huge, our knowledge of how they are biosynthesized is limited, particularly when compared to the well-studied thiotemplate assembly lines. Bacteria have only recently been recognized as having the genetic potential to biosynthesize a large number of complex terpenoids, but our current ability to associate genetic potential with molecular structure is severely restricted. The canonical terpene biosynthetic pathway uses a single enzyme to form a cyclized hydrocarbon backbone followed by modifications with a suite of tailoring enzymes that can generate dozens of different products from a single backbone. This functional promiscuity of terpene biosynthetic pathways renders terpene biosynthesis susceptible to rational pathway engineering using the latest developments in the field of synthetic biology. These engineered pathways will not only facilitate the rational creation of both known and novel terpenoids, their development will deepen our understanding of a significant branch of biosynthesis. The biosynthetic insights gained will likely empower a greater degree of engineering proficiency for non-natural terpene biosynthetic pathways and pave the way towards the biotechnological production of high value terpenoids.
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Affiliation(s)
- Eric J N Helfrich
- Harvard Medical School, Department of Biological Chemistry and Molecular Pharmacology, Boston, United States
| | - Geng-Min Lin
- Massachusetts Institute of Technology, Department of Biological Engineering, Cambridge, United States
| | - Christopher A Voigt
- Massachusetts Institute of Technology, Department of Biological Engineering, Cambridge, United States
| | - Jon Clardy
- Harvard Medical School, Department of Biological Chemistry and Molecular Pharmacology, Boston, United States
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70
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Fanani MZ, Fukushima EO, Sawai S, Tang J, Ishimori M, Sudo H, Ohyama K, Seki H, Saito K, Muranaka T. Molecular Basis of C-30 Product Regioselectivity of Legume Oxidases Involved in High-Value Triterpenoid Biosynthesis. FRONTIERS IN PLANT SCIENCE 2019; 10:1520. [PMID: 31850023 PMCID: PMC6901910 DOI: 10.3389/fpls.2019.01520] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 10/31/2019] [Indexed: 05/23/2023]
Abstract
The triterpenes are structurally diverse group of specialized metabolites with important roles in plant defense and human health. Glycyrrhizin, with a carboxyl group at C-30 of its aglycone moiety, is a valuable triterpene glycoside, the production of which is restricted to legume medicinal plants belonging to the Glycyrrhiza species. Cytochrome P450 monooxygenases (P450s) are important for generating triterpene chemodiversity by catalyzing site-specific oxidation of the triterpene scaffold. CYP72A154 was previously identified from the glycyrrhizin-producing plant Glycyrrhiza uralensis as a C-30 oxidase in glycyrrhizin biosynthesis, but its regioselectivity is rather low. In contrast, CYP72A63 from Medicago truncatula showed superior regioselectivity in C-30 oxidation, improving the production of glycyrrhizin aglycone in engineered yeast. The underlying molecular basis of C-30 product regioselectivity is not well understood. Here, we identified two amino acid residues that control C-30 product regioselectivity and contribute to the chemodiversity of triterpenes accumulated in legumes. Amino acid sequence comparison combined with structural analysis of the protein model identified Leu149 and Leu398 as important amino acid residues for C-30 product regioselectivity. These results were further confirmed by mutagenesis of CYP72A154 homologs from glycyrrhizin-producing species, functional phylogenomics analyses, and comparison of corresponding residues of C-30 oxidase homologs in other legumes. These findings could be combined with metabolic engineering to further enhance the production of high-value triterpene compounds.
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Affiliation(s)
- Much Zaenal Fanani
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Ery Odette Fukushima
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
- Department of Biotechnology, Faculty of Life Sciences, Universidad Regional Amazónica IKIAM, Tena, Ecuador
| | - Satoru Sawai
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
- Tokiwa Phytochemical Co., Ltd., Sakura, Japan
| | - Jianwei Tang
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Masato Ishimori
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | | | - Kiyoshi Ohyama
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Meguro, Japan
| | - Hikaru Seki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Kazuki Saito
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Toshiya Muranaka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
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71
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Ramdass AC, Villafana RT, Rampersad SN. Comparative Sequence Analysis of TRI1 of Fusarium. Toxins (Basel) 2019; 11:E689. [PMID: 31771208 PMCID: PMC6950058 DOI: 10.3390/toxins11120689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 12/28/2022] Open
Abstract
Trichothecene mycotoxins are a class of secondary metabolites produced by multiple genera of fungi, including certain plant pathogenic Fusarium species. Functional variation in the TRI1 gene produces a novel Type A trichothecene called NX-2 in strains of F. graminearum. Using a bioinformatics approach, a systematic analysis of 52 translated TRI1 sequences of Fusarium species, including five F. graminearum NX-2 producers and four F. graminearum non-NX-2 producers, was conducted to explain the functional difference of TRI1p of FGNX-2. An assessment of several signature motifs of fungal P450s revealed amino acid substitutions in addition to the post-translational N-X-S/T sequons motif, which is indicative of N-linked glycosylation of this TRI1-encoded protein characteristic of NX-2 producers. There was evidence of selection bias, where TRI1 gene sequences were found to be under positive selection and, therefore, under functional constraints. The cumulative amino acid changes in the TRI1p sequences were reflected in the phylogenetic analyses which revealed species-specific clustering with a distinct separation of FGNX-2 from FG-non-NX-2 producers with high bootstrap support. Together, our findings provide insight into the amino acid sequence features responsible for the functional diversification of this TRI1p.
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72
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Jensen PE, Scharff LB. Engineering of plastids to optimize the production of high-value metabolites and proteins. Curr Opin Biotechnol 2019; 59:8-15. [DOI: 10.1016/j.copbio.2019.01.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/08/2018] [Accepted: 01/18/2019] [Indexed: 10/27/2022]
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73
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Okazawa A, Yamanishi K, Katsuyama N, Kitazawa S, Ogawa T, Ohta D. Identification of novel cytochrome P450 monooxygenases from actinomycetes capable of intermolecular oxidative C-C coupling reactions. J Biosci Bioeng 2019; 129:23-30. [PMID: 31506243 DOI: 10.1016/j.jbiosc.2019.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 10/26/2022]
Abstract
The cross-coupling reaction is one of the most important chemical reactions in the modern organic chemistry. Biocatalysts capable of catalyzing C-C coupling reactions are desired in the chemical industry for sustainable development. Cytochrome P450 monooxygenases (P450s) have received considerable attention as biocatalysts capable of catalyzing such reactions. Here, we focused on actinomycete P450s, which have high homology with CYP158A2, involved in the oxidative C-C coupling reaction for flaviolin dimerization in Streptomyces coelicolor A3(2). The screening of a chemical library composed of 426 aromatic compounds identified several combinations of P450s and their potential substrates. The type-I difference spectrum indicated that the identified substrates bind to the active sites of a P450, named StVI from Streptomyces violaceusniger. A redshift of the absorption maximum of the reaction products, together with LC-MS analysis suggested the presence of extended conjugate systems in the products through direct C-C coupling between two aromatic rings. The results demonstrated that actinomycete P450s have great potential to be utilized as biocatalysts for oxidative C-C coupling reactions and to facilitate the synthesis of diverse coupling products.
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Affiliation(s)
- Atsushi Okazawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Kenta Yamanishi
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Nao Katsuyama
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Shohei Kitazawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Takumi Ogawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Daisaku Ohta
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
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74
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Mellor SB, Vinde MH, Nielsen AZ, Hanke GT, Abdiaziz K, Roessler MM, Burow M, Motawia MS, Møller BL, Jensen PE. Defining optimal electron transfer partners for light-driven cytochrome P450 reactions. Metab Eng 2019; 55:33-43. [PMID: 31091467 DOI: 10.1016/j.ymben.2019.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/02/2019] [Accepted: 05/04/2019] [Indexed: 12/16/2022]
Abstract
Plants and cyanobacteria are promising heterologous hosts for metabolic engineering, and particularly suited for expression of cytochrome P450 (P450s), enzymes that catalyse key steps in biosynthetic pathways leading to valuable natural products such as alkaloids, terpenoids and phenylpropanoids. P450s are often difficult to express and require a membrane-bound NADPH-dependent reductase, complicating their use in metabolic engineering and bio-production. We previously demonstrated targeting of heterologous P450s to thylakoid membranes both in N. benthamiana chloroplasts and cyanobacteria, and functional substitution of their native reductases with the photosynthetic apparatus via the endogenous soluble electron carrier ferredoxin. However, because ferredoxin acts as a sorting hub for photosynthetic reducing power, there is fierce competition for reducing equivalents, which limits photosynthesis-driven P450 output. This study compares the ability of four electron carriers to increase photosynthesis-driven P450 activity. These carriers, three plant ferredoxins and a flavodoxin-like engineered protein derived from cytochrome P450 reductase, show only modest differences in their electron transfer to our model P450, CYP79A1 in vitro. However, only the flavodoxin-like carrier supplies appreciable reducing power in the presence of competition for reduced ferredoxin, because it possesses a redox potential that renders delivery of reducing equivalents to endogenous processes inefficient. We further investigate the efficacy of these electron carrier proteins in vivo by expressing them transiently in N. benthamiana fused to CYP79A1. All but one of the fusion enzymes show improved sequestration of photosynthetic reducing power. Fusion with the flavodoxin-like carrier offers the greatest improvement in this comparison - nearly 25-fold on a per protein basis. Thus, this study demonstrates that synthetic electron transfer pathways with optimal redox potentials can alleviate the problem of endogenous competition for reduced ferredoxin and sets out a new metabolic engineering strategy useful for producing valuable natural products.
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Affiliation(s)
- Silas Busck Mellor
- Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Marcos Hamborg Vinde
- Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Agnieszka Zygadlo Nielsen
- Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Guy Thomas Hanke
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Kaltum Abdiaziz
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Maxie M Roessler
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Meike Burow
- DyNaMo Center of Excellence, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Mohammed Saddik Motawia
- Villum Research Center for Plant Plasticity, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Birger Lindberg Møller
- Villum Research Center for Plant Plasticity, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Poul Erik Jensen
- Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.
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75
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Ward VCA, Chatzivasileiou AO, Stephanopoulos G. Metabolic engineering of Escherichia coli for the production of isoprenoids. FEMS Microbiol Lett 2019; 365:4953741. [PMID: 29718190 DOI: 10.1093/femsle/fny079] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/25/2018] [Indexed: 12/22/2022] Open
Abstract
Metabolic engineering is the practice of using directed genetic manipulations to rewire cellular metabolism primarily with the aim to transform the organism into a single-celled chemical factory. Using biological processes, we can produce more complex chemicals in a more sustainable way. This is particularly important for chemicals which are hard to synthesize using traditional chemistry. However, cells have evolved for growth and must be engineered to produce a single chemical at commercially viable levels. This review focuses on the strategies used to rewire cellular metabolism to produce chemicals using isoprenoid production in Escherichia coli as an example that illustrates many of the challenges faced in metabolic engineering.
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Affiliation(s)
- Valerie C A Ward
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON N2L 3G1, Canada
| | | | - Gregory Stephanopoulos
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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76
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Li Y, Wong LL. Multi‐Functional Oxidase Activity of CYP102A1 (P450BM3) in the Oxidation of Quinolines and Tetrahydroquinolines. Angew Chem Int Ed Engl 2019; 58:9551-9555. [DOI: 10.1002/anie.201904157] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/13/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Yushu Li
- Department of ChemistryUniversity of OxfordInorganic Chemistry Laboratory South Parks Road Oxford OX1 3QR UK
| | - Luet L. Wong
- Department of ChemistryUniversity of OxfordInorganic Chemistry Laboratory South Parks Road Oxford OX1 3QR UK
- Oxford Suzhou Centre for Advanced Research Ruo Shui Road, Suzhou Industrial Park Jiangsu 215123 P. R. China
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77
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Tieves F, Willot SJ, van Schie MMCH, Rauch MCR, Younes SHH, Zhang W, Dong J, Gomez de Santos P, Robbins JM, Bommarius B, Alcalde M, Bommarius AS, Hollmann F. Formate Oxidase (FOx) from Aspergillus oryzae: One Catalyst Enables Diverse H 2 O 2 -Dependent Biocatalytic Oxidation Reactions. Angew Chem Int Ed Engl 2019; 58:7873-7877. [PMID: 30945422 PMCID: PMC6563469 DOI: 10.1002/anie.201902380] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Indexed: 12/29/2022]
Abstract
An increasing number of biocatalytic oxidation reactions rely on H2 O2 as a clean oxidant. The poor robustness of most enzymes towards H2 O2 , however, necessitates more efficient systems for in situ H2 O2 generation. In analogy to the well-known formate dehydrogenase to promote NADH-dependent reactions, we here propose employing formate oxidase (FOx) to promote H2 O2 -dependent enzymatic oxidation reactions. Even under non-optimised conditions, high turnover numbers for coupled FOx/peroxygenase catalysis were achieved.
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Affiliation(s)
- Florian Tieves
- Department of BiotechnologyUniversity of Technology Delftvan der Massweg 92629HZDelftThe Netherlands
| | | | | | | | - Sabry Hamdy Hamed Younes
- Department of BiotechnologyUniversity of Technology Delftvan der Massweg 92629HZDelftThe Netherlands
- Chemistry DepartmentFaculty of ScienceSohag UniversitySohag82524Egypt
| | - Wuyuan Zhang
- Department of BiotechnologyUniversity of Technology Delftvan der Massweg 92629HZDelftThe Netherlands
| | - JiaJia Dong
- Department of BiotechnologyUniversity of Technology Delftvan der Massweg 92629HZDelftThe Netherlands
| | | | - John Mick Robbins
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology311 Ferst Drive, N.W.AtlantaGA30332USA
| | - Bettina Bommarius
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology311 Ferst Drive, N.W.AtlantaGA30332USA
| | - Miguel Alcalde
- Department of BiocatalysisInstitute of CatalysisCSIC28049MadridSpain
| | - Andreas Sebastian Bommarius
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology311 Ferst Drive, N.W.AtlantaGA30332USA
- School of Chemistry and BiochemistryGeorgia Institute of Technology901 Atlantic Drive, N.W.AtlantaGA30332USA
| | - Frank Hollmann
- Department of BiotechnologyUniversity of Technology Delftvan der Massweg 92629HZDelftThe Netherlands
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78
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Li Y, Wong LL. Multi‐Functional Oxidase Activity of CYP102A1 (P450BM3) in the Oxidation of Quinolines and Tetrahydroquinolines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904157] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yushu Li
- Department of ChemistryUniversity of OxfordInorganic Chemistry Laboratory South Parks Road Oxford OX1 3QR UK
| | - Luet L. Wong
- Department of ChemistryUniversity of OxfordInorganic Chemistry Laboratory South Parks Road Oxford OX1 3QR UK
- Oxford Suzhou Centre for Advanced Research Ruo Shui Road, Suzhou Industrial Park Jiangsu 215123 P. R. China
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79
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Li D, Ma Y, Zhou Y, Gou J, Zhong Y, Zhao L, Han L, Ovchinnikov S, Ma L, Huang S, Greisen P, Shang Y. A structural and data-driven approach to engineering a plant cytochrome P450 enzyme. SCIENCE CHINA-LIFE SCIENCES 2019; 62:873-882. [DOI: 10.1007/s11427-019-9538-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 02/26/2019] [Indexed: 10/26/2022]
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80
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Tieves F, Willot SJ, van Schie MMCH, Rauch MCR, Younes SHH, Zhang W, Dong J, Gomez de Santos P, Robbins JM, Bommarius B, Alcalde M, Bommarius AS, Hollmann F. Formiat‐Oxidase (FOx) aus
Aspergillus oryzae
: ein Katalysator für verschiedene H
2
O
2
‐abhängige biokatalytische Oxidationen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Florian Tieves
- Department of BiotechnologyUniversity of Technology Delft van der Massweg 9 2629HZ Delft Niederlande
| | | | | | | | - Sabry Hamdy Hamed Younes
- Department of BiotechnologyUniversity of Technology Delft van der Massweg 9 2629HZ Delft Niederlande
- Chemistry DepartmentFaculty of ScienceSohag University Sohag 82524 Ägypten
| | - Wuyuan Zhang
- Department of BiotechnologyUniversity of Technology Delft van der Massweg 9 2629HZ Delft Niederlande
| | - JiaJia Dong
- Department of BiotechnologyUniversity of Technology Delft van der Massweg 9 2629HZ Delft Niederlande
| | | | - John Mick Robbins
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology 311 Ferst Drive, N.W. Atlanta GA 30332 USA
| | - Bettina Bommarius
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology 311 Ferst Drive, N.W. Atlanta GA 30332 USA
| | - Miguel Alcalde
- Department of BiocatalysisInstitute of CatalysisCSIC 28049 Madrid Spanien
| | - Andreas Sebastian Bommarius
- School of Chemical and Biomolecular EngineeringGeorgia Institute of Technology 311 Ferst Drive, N.W. Atlanta GA 30332 USA
- School of Chemistry and BiochemistryGeorgia Institute of Technology 901 Atlantic Drive, N.W. Atlanta GA 30332 USA
| | - Frank Hollmann
- Department of BiotechnologyUniversity of Technology Delft van der Massweg 9 2629HZ Delft Niederlande
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81
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Savitskaya J, Protzko RJ, Li FZ, Arkin AP, Dueber JE. Iterative screening methodology enables isolation of strains with improved properties for a FACS-based screen and increased L-DOPA production. Sci Rep 2019; 9:5815. [PMID: 30967567 PMCID: PMC6456618 DOI: 10.1038/s41598-019-41759-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 03/05/2019] [Indexed: 12/20/2022] Open
Abstract
Optimizing microbial hosts for the large-scale production of valuable metabolites often requires multiple mutations and modifications to the host's genome. We describe a three-round screen for increased L-DOPA production in S. cerevisiae using FACS enrichment of an enzyme-coupled biosensor for L-DOPA. Multiple rounds of screening were enabled by a single build of a barcoded in vitro transposon-mediated disruption library. New background strains for screening were built for each iteration using results from previous iterations. The same in vitro transposon-mediated disruption library was integrated by homologous recombination into new background strains in each round of screening. Compared with creating new transposon insertions in each round, this method takes less time and saves the cost of additional sequencing to characterize transposon insertion sites. In the first two rounds of screening, we identified deletions that improved biosensor compartmentalization and, consequently, improved our ability to screen for L-DOPA production. In a final round, we discovered that deletion of heme oxygenase (HMX1) increases total heme concentration and increases L-DOPA production, using dopamine measurement as a proxy. We further demonstrated that deleting HMX1 may represent a general strategy for P450 function improvement by improving activity of a second P450 enzyme, BM3, which performs a distinct reaction.
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Affiliation(s)
- Judy Savitskaya
- University of California, Berkeley - UCSF Graduate Program in Bioengineering, Berkeley, CA, 94720, USA.,Department of Bioengineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Ryan J Protzko
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Francesca-Zhoufan Li
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Adam P Arkin
- University of California, Berkeley - UCSF Graduate Program in Bioengineering, Berkeley, CA, 94720, USA. .,Department of Bioengineering, University of California, Berkeley, Berkeley, CA, 94720, USA. .,Environmental Genomics & System Biology, Lawrence Berkeley National Lab, Berkeley, California, USA.
| | - John E Dueber
- University of California, Berkeley - UCSF Graduate Program in Bioengineering, Berkeley, CA, 94720, USA. .,Department of Bioengineering, University of California, Berkeley, Berkeley, CA, 94720, USA. .,Biological Systems & Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
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82
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Russo DA, Zedler JAZ, Jensen PE. A force awakens: exploiting solar energy beyond photosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:1703-1710. [PMID: 30773590 PMCID: PMC6436153 DOI: 10.1093/jxb/erz054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 02/05/2019] [Indexed: 05/12/2023]
Abstract
In recent years, efforts to exploit sunlight, a free and abundant energy source, have sped up dramatically. Oxygenic photosynthetic organisms, such as higher plants, algae, and cyanobacteria, can convert solar energy into chemical energy very efficiently using water as an electron donor. By providing organic building blocks for life in this way, photosynthesis is undoubtedly one of the most important processes on Earth. The aim of light-driven catalysis is to harness solar energy, in the form of reducing power, to drive enzymatic reactions requiring electrons for their catalytic cycle. Light-driven enzymes have been shown to have a large number of biotechnological applications, ranging from the production of high-value secondary metabolites to the development of green chemistry processes. Here, we highlight recent key developments in the field of light-driven catalysis using biological components. We will also discuss strategies to design and optimize light-driven systems in order to develop the next generation of sustainable solutions in biotechnology.
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Affiliation(s)
- David A Russo
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Julie A Z Zedler
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Poul Erik Jensen
- Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
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83
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Mitchell AJ, Weng JK. Unleashing the Synthetic Power of Plant Oxygenases: From Mechanism to Application. PLANT PHYSIOLOGY 2019; 179:813-829. [PMID: 30670605 PMCID: PMC6393811 DOI: 10.1104/pp.18.01223] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/14/2019] [Indexed: 05/23/2023]
Abstract
The functions and biochemical mechanisms of major classes of plant oxygenases are discussed, and their potential utility for plant synthetic biology is explored.
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Affiliation(s)
- Andrew J Mitchell
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
| | - Jing-Ke Weng
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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84
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Shang Y, Huang S. Multi-omics data-driven investigations of metabolic diversity of plant triterpenoids. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 97:101-111. [PMID: 30341835 DOI: 10.1111/tpj.14132] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/04/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
The vast majority of structurally diverse metabolites play essential roles in mediating the interactions between plant and environment, and constitute a valuable resource for industrial applications. Recent breakthroughs in sequencing technology have greatly accelerated metabolic studies of natural plant products, providing opportunities to investigate the molecular basis underlying the diversity of specialized plant metabolites through large-scale analysis. Here, we focus on the biosynthesis of plant triterpenoids, especially the three diversifying reactions (cyclization, oxidation and glycosylation) that largely contribute to the structural diversity of triterpenoids. Gene mining through large-scale omics data and functional characterization of metabolic genes including enzymes, transcription factors and transporters could provide important insights into the evolution of specialized plant metabolism and pave the way for the production of high-value metabolites or derivatives using synthetic biology approaches.
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Affiliation(s)
- Yi Shang
- The CAAS-YNNU-YINMORE Joint Academy of Potato Science, Yunnan Normal University, Kunming, 650500, China
| | - Sanwen Huang
- Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518124, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100084, China
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85
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Fürst MJLJ, Romero E, Gómez Castellanos JR, Fraaije MW, Mattevi A. Side-Chain Pruning Has Limited Impact on Substrate Preference in a Promiscuous Enzyme. ACS Catal 2018; 8:11648-11656. [PMID: 30687578 PMCID: PMC6345240 DOI: 10.1021/acscatal.8b03793] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/26/2018] [Indexed: 01/02/2023]
Abstract
![]()
Detoxifying
enzymes such as flavin-containing monooxygenases deal
with a huge array of highly diverse xenobiotics and toxic compounds.
In addition to being of high physiological relevance, these drug-metabolizing
enzymes are useful catalysts for synthetic chemistry. Despite the
wealth of studies, the molecular basis of their relaxed substrate
selectivity remains an open question. Here, we addressed this issue
by applying a cumulative alanine mutagenesis approach to cyclohexanone
monooxygenase from Thermocrispum municipale, a flavin-dependent
Baeyer–Villiger monooxygenase which we chose as a model system
because of its pronounced thermostability and substrate promiscuity.
Simultaneous removal of up to eight noncatalytic active-site side
chains including four phenylalanines had no effect on protein folding,
thermostability, and cofactor loading. We observed a linear decrease
in activity, rather than a selectivity switch, and attributed this
to a less efficient catalytic environment in the enlarged active-site
space. Time-resolved kinetic studies confirmed this interpretation.
We also determined the crystal structure of the enzyme in complex
with a mimic of the reaction intermediate that shows an unaltered
overall protein conformation. These findings led us to propose that
this cyclohexanone monooxygenase may lack a distinct substrate selection
mechanism altogether. We speculate that the main or exclusive function
of the protein shell in promiscuous enzymes might be the stabilization
and accessibility of their very reactive catalytic intermediates.
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Affiliation(s)
- Maximilian J. L. J. Fürst
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Elvira Romero
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | | | - Marco W. Fraaije
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Andrea Mattevi
- Department of Biology and Biotechnology, University of Pavia, Via Ferrata 1, 27100, Pavia, Italy
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86
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Forman V, Bjerg-Jensen N, Dyekjær JD, Møller BL, Pateraki I. Engineering of CYP76AH15 can improve activity and specificity towards forskolin biosynthesis in yeast. Microb Cell Fact 2018; 17:181. [PMID: 30453976 PMCID: PMC6240942 DOI: 10.1186/s12934-018-1027-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022] Open
Abstract
Background Forskolin is a high-value diterpenoid produced exclusively by the Lamiaceae plant Coleus forskohlii. Today forskolin is used pharmaceutically for its adenyl-cyclase activating properties. The limited availability of pure forskolin is currently hindering its full utilization, thus a new environmentally friendly, scalable and sustainable strategy is needed for forskolin production. Recently, the entire biosynthetic pathway leading to forskolin was elucidated. The key steps of the pathway are catalyzed by cytochrome P450 enzymes (CYPs), which have been shown to be the limiting steps of the pathway. Here we study whether protein engineering of the substrate recognition sites (SRSs) of CYPs can improve their efficiency towards forskolin biosynthesis in yeast. Results As a proof of concept, we engineered the enzyme responsible for the first putative oxygenation step of the forskolin pathway: the conversion of 13R-manoyl oxide to 11-oxo-13R-manoyl oxide, catalyzed by the CYP76AH15. Four CYP76AH15 variants—engineered in the SRS regions—yielded at least a twofold increase of 11-oxo-13R-manoyl oxide when expressed in yeast cells grown in microtiter plates. The highest titers (5.6-fold increase) were observed with the variant A99I, mutated in the SRS1 region. Double or triple CYP76AH15 mutant variants resulted in additional enzymes with optimized performances. Moreover, in planta CYP76AH15 can synthesize ferruginol from miltiradiene. In this work, we showed that the mutants affecting 11-oxo-13R-manoyl oxide synthesis, do not affect ferruginol production, and vice versa. The best performing variant, A99I, was utilized to reconstruct the forskolin biosynthetic pathway in yeast cells. Although these strains showed increased 11-oxo-manoyl oxide production and higher accumulation of other pathway intermediates compared to the native CYP76AH15, lower production of forskolin was observed. Conclusions As demonstrated for CYP76AH15, site-directed mutagenesis of SRS regions of plant CYPs may be an efficient and targeted approach to increase the performance of these enzymes. Although in this work we have managed to achieve higher efficiency and specificity of the first CYP of the pathway, further work is necessary in order to increase the overall production of forskolin in yeast cells. Electronic supplementary material The online version of this article (10.1186/s12934-018-1027-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Victor Forman
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.,Evolva A/S, Copenhagen, Denmark
| | | | | | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.,bioSYNergy, Center for Synthetic Biology, 1871, Frederiksberg C, Denmark.,VILLUM, Research Center for Plant Plasticity, 1871, Frederiksberg C, Denmark
| | - Irini Pateraki
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark. .,bioSYNergy, Center for Synthetic Biology, 1871, Frederiksberg C, Denmark.
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87
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Wu K, Tang L, Cui H, Wan N, Liu Z, Wang Z, Zhang S, Cui B, Han W, Chen Y. Biocatalytical Asymmetric Sulfoxidation by Identifying Cytochrome P450 fromParvibaculum LavamentivoransDS‐1. ChemCatChem 2018. [DOI: 10.1002/cctc.201801139] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Kailin Wu
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Linchao Tang
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Haibo Cui
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Nanwei Wan
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Ziyan Liu
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Zhongqiang Wang
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Shimin Zhang
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Baodong Cui
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Wenyong Han
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
| | - Yongzheng Chen
- Generic Drug Research Center of Guizhou Province Green Pharmaceuticals Engineering Research Center of Guizhou Province School of PharmacyZunyi Medical University Zunyi 563000 P.R. China
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88
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Weingartner AM, Sauer DF, Dhoke GV, Davari MD, Ruff AJ, Schwaneberg U. A hydroquinone-specific screening system for directed P450 evolution. Appl Microbiol Biotechnol 2018; 102:9657-9667. [PMID: 30191291 PMCID: PMC6208966 DOI: 10.1007/s00253-018-9328-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 11/24/2022]
Abstract
The direct hydroxylation of benzene to hydroquinone (HQ) under mild reaction conditions is a challenging task for chemical catalysts. Cytochrome P450 (CYP) monooxygenases are known to catalyze the oxidation of a variety of aromatic compounds with atmospheric dioxygen. Protein engineering campaigns led to the identification of novel P450 variants, which yielded improvements in respect to activity, specificity, and stability. An effective screening strategy is crucial for the identification of improved enzymes with desired characteristics in large mutant libraries. Here, we report a first screening system designed for screening of P450 variants capable to produce hydroquinones. The hydroquinone quantification assay is based on the interaction of 4-nitrophenylacetonitrile (NpCN) with hydroquinones under alkaline conditions. In the 96-well plate format, a low detection limit (5 μM) and a broad linear detection range (5 to 250 μM) were obtained. The NpCN assay can be used for the quantification of dihydroxylated aromatic compounds such as hydroquinones, catechols, and benzoquinones. We chose the hydroxylation of pseudocumene by P450 BM3 as a target reaction and screened for improved trimethylhydroquinone (TMHQ) formation. The new P450 BM3 variant AW2 (R47Q, Y51F, I401M, A330P) was identified by screening a saturation mutagenesis library of amino acid position A330 with the NpCN assay. In summary, a 70-fold improved TMHQ formation was achieved with P450 BM3 AW2 when compared to the wild type (WT) and a 1.8-fold improved TMHQ formation compared to the recently reported P450 BM3 M3 (R47S, Y51W, A330F, I401M).
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Affiliation(s)
| | - Daniel F Sauer
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | - Gaurao V Dhoke
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | - Mehdi D Davari
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | - Anna Joëlle Ruff
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany.
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany.
- DWI - Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, 52074, Aachen, Germany.
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89
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Cinelli MA, Yang J, Scharmen A, Woodman J, Karchalla LM, Lee KSS. Enzymatic synthesis and chemical inversion provide both enantiomers of bioactive epoxydocosapentaenoic acids. J Lipid Res 2018; 59:2237-2252. [PMID: 30209076 PMCID: PMC6210906 DOI: 10.1194/jlr.d089136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/12/2018] [Indexed: 11/20/2022] Open
Abstract
Epoxy PUFAs are endogenous cytochrome P450 (P450) metabolites of dietary PUFAs. Although these metabolites exert numerous biological effects, attempts to study their complex biology have been hampered by difficulty in obtaining the epoxides as pure regioisomers and enantiomers. To remedy this, we synthesized 19,20- and 16,17-epoxydocosapentaenoic acids (EDPs) (the two most abundant EDPs in vivo) by epoxidation of DHA with WT and the mutant (F87V) P450 enzyme BM3 from Bacillus megaterium WT epoxidation yielded a 4:1 mixture of 19,20:16,17-EDP exclusively as (S,R) enantiomers. Epoxidation with the mutant (F87V) yielded a 1.6:1 mixture of 19,20:16,17-EDP; the 19,20-EDP fraction was ∼9:1 (S,R):(R,S), but the 16,17-EDP was exclusively the (S,R) enantiomer. To access the (R,S) enantiomers of these EDPs, we used a short (four-step) chemical inversion sequence, which utilizes 2-(phenylthio)ethanol as the epoxide-opening nucleophile, followed by mesylation of the resulting alcohol, oxidation of the thioether moiety, and base-catalyzed elimination. This short synthesis cleanly converts the (S,R)-epoxide to the (R,S)-epoxide without loss of enantiopurity. This method, also applicable to eicosapentaenoic acid and arachidonic acid, provides a simple, cost-effective procedure for accessing larger amounts of these metabolites.
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Affiliation(s)
- Maris A Cinelli
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824
| | - Jun Yang
- Department of Entomology and Nematology University of California at Davis, Davis, CA 95616
- UCD Comprehensive Cancer Center, University of California at Davis, Davis, CA 95616
| | - Amy Scharmen
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824
| | - Joey Woodman
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824
| | - Lalitha M Karchalla
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824
| | - Kin Sing Stephen Lee
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824
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90
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Ji Y, Mertens AM, Gertler C, Fekiri S, Keser M, Sauer DF, Smith KEC, Schwaneberg U. Directed OmniChange Evolution Converts P450 BM3 into an Alkyltrimethylammonium Hydroxylase. Chemistry 2018; 24:16865-16872. [DOI: 10.1002/chem.201803806] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Yu Ji
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Alan Maurice Mertens
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Christoph Gertler
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Sallama Fekiri
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Merve Keser
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Daniel F. Sauer
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Kilian E. C. Smith
- Institute for Environmental Research RWTH Aachen University Worringerweg 1 52074 Aachen Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology RWTH Aachen University Worringerweg 3 52074 Aachen Germany
- DWI-Leibniz Institute for Interactive Materials Forckenbeckstraße 50 52074 Aachen Germany
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91
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Affiliation(s)
- Mahesh D. Patil
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Gideon Grogan
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - Andreas Bommarius
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive, Atlanta, Georgia 30332-2000, United States
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
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92
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Xu LH, Du YL. Rational and semi-rational engineering of cytochrome P450s for biotechnological applications. Synth Syst Biotechnol 2018; 3:283-290. [PMID: 30533540 PMCID: PMC6263019 DOI: 10.1016/j.synbio.2018.10.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 01/08/2023] Open
Abstract
The cytochrome P450 enzymes are ubiquitous heme-thiolate proteins performing regioselective and stereoselective oxygenation reactions in cellular metabolism. Due to their broad substrate scope and catalytic versatility, P450 enzymes are also attractive candidates for many industrial and biopharmaceutical applications. For particular uses, enzyme properties of P450s can be further optimized through directed evolution, rational, and semi-rational engineering approaches, all of which introduce mutations within the P450 structures. In this review, we describe the recent applications of these P450 engineering approaches and highlight the key regions and residues that have been identified using such approaches. These “hotspots” lie within critical functional areas of the P450 structure, including the active site, the substrate access channel, and the redox partner interaction interface.
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Affiliation(s)
- Lian-Hua Xu
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Corresponding author.
| | - Yi-Ling Du
- Institute of Pharmaceutical Biotechnology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
- Corresponding author.
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93
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Geronimo I, Denning CA, Heidary DK, Glazer EC, Payne CM. Molecular Determinants of Substrate Affinity and Enzyme Activity of a Cytochrome P450 BM3 Variant. Biophys J 2018; 115:1251-1263. [PMID: 30224054 DOI: 10.1016/j.bpj.2018.08.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/18/2018] [Accepted: 08/20/2018] [Indexed: 12/29/2022] Open
Abstract
Cytochrome P450BM3 catalyzes the hydroxylation and/or epoxidation of fatty acids, fatty amides, and alcohols. Protein engineering has produced P450BM3 variants capable of accepting drug molecules normally metabolized by human P450 enzymes. The enhanced substrate promiscuity has been attributed to the greater flexibility of the lid of the substrate channel. However, it is not well understood how structurally different and highly polar drug molecules can stably bind in the active site nor how the activity and coupling efficiency of the enzyme may be affected by the lack of enzyme-substrate complementarity. To address these important aspects of non-native small molecule binding, this study investigated the binding of drug molecules with different size, charge, polar surface area, and human P450 affinity on the promiscuous R47L/F87V/L188Q/E267V/F81I pentuple mutant of P450BM3. Binding free energy data and energy decomposition analysis showed that pentuple mutant P450BM3 stably binds (i.e., negative ΔGb°) a broad range of substrate and inhibitor types because dispersion interactions with active site residues overcome unfavorable repulsive and electrostatic effects. Molecular dynamics simulations revealed that 1) acidic substrates tend to disrupt the heme propionate A-K69 salt bridge, which may reduce heme oxidizing ability, and 2) the lack of complementarity leads to high substrate mobility and water density in the active site, which may lead to uncoupling. These factors must be considered in future developments of P450BM3 as a biocatalyst in the large-scale production of drug metabolites.
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Affiliation(s)
- Inacrist Geronimo
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky
| | | | - David K Heidary
- Department of Chemistry, University of Kentucky, Lexington, Kentucky
| | - Edith C Glazer
- Department of Chemistry, University of Kentucky, Lexington, Kentucky.
| | - Christina M Payne
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky.
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94
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Morlock LK, Grobe S, Balke K, Mauersberger S, Böttcher D, Bornscheuer UT. Protein Engineering of the Progesterone Hydroxylating P450-Monooxygenase CYP17A1 Alters Its Regioselectivity. Chembiochem 2018; 19:1954-1958. [PMID: 29981252 DOI: 10.1002/cbic.201800371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Indexed: 11/05/2022]
Abstract
The CYP171 enzyme is known to catalyse a key step in the steroidogenesis of mammals. The substrates progesterone and pregnenolone are first hydroxylated at the C17 position, and this is followed by cleavage of the C17-C20 bond to yield important precursors for glucosteroids and androgens. In this study, we focused on the reaction of the bovine CYP17A1 enzyme with progesterone as a substrate. On the basis of a created homology model, active-site residues were identified and systematically mutated to alanine. In whole-cell biotransformations, the importance of the N202, R239, G297 and E305 residues for substrate conversion was confirmed. Additionally, mutation of the L206, V366 and V483 residues enhanced the formation of the 16α-hydroxyprogesterone side product up to 40 % of the total product formation. Furthermore, residue L105 was found not to be involved in this side activity, which contradicts a previous study with the human enzyme.
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Affiliation(s)
- Lisa K Morlock
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
| | - Sascha Grobe
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
| | - Kathleen Balke
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
| | - Stephan Mauersberger
- Institute of Microbiology, Faculty of Biology, Dresden University of Technology, Zellescher Weg 20b, 01062, Dresden, Germany
| | - Dominique Böttcher
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
| | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Strasse 4, 17487, Greifswald, Germany
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95
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Zhang L, King E, Luo R, Li H. Development of a High-Throughput, In Vivo Selection Platform for NADPH-Dependent Reactions Based on Redox Balance Principles. ACS Synth Biol 2018; 7:1715-1721. [PMID: 29939709 DOI: 10.1021/acssynbio.8b00179] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bacteria undergoing anaerobic fermentation must maintain redox balance. In vivo metabolic evolution schemes based on this principle have been limited to targeting NADH-dependent reactions. Here, we developed a facile, specific, and high-throughput growth-based selection platform for NADPH-consuming reactions in vivo, based on an engineered NADPH-producing glycolytic pathway in Escherichia coli. We used the selection system in the directed evolution of a NADH-dependent d-lactate dehydrogenase from Lactobacillus delbrueckii toward utilization of NADPH. Through one round of selection, we obtained multiple enzyme variants with superior NADPH-dependent activities and protein expression levels; these mutants may serve as important tools in biomanufacturing d-lactate as a renewable polymer building block. Importantly, sequence analysis and computational protein modeling revealed that diverging evolutionary paths during the selection resulted in two distinct cofactor binding modes, which suggests that the high throughput of our selection system allowed deep searching of protein sequence space to discover diverse candidates en masse.
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96
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Dong J, Fernández‐Fueyo E, Hollmann F, Paul CE, Pesic M, Schmidt S, Wang Y, Younes S, Zhang W. Biocatalytic Oxidation Reactions: A Chemist's Perspective. Angew Chem Int Ed Engl 2018; 57:9238-9261. [PMID: 29573076 PMCID: PMC6099261 DOI: 10.1002/anie.201800343] [Citation(s) in RCA: 276] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 01/25/2023]
Abstract
Oxidation chemistry using enzymes is approaching maturity and practical applicability in organic synthesis. Oxidoreductases (enzymes catalysing redox reactions) enable chemists to perform highly selective and efficient transformations ranging from simple alcohol oxidations to stereoselective halogenations of non-activated C-H bonds. For many of these reactions, no "classical" chemical counterpart is known. Hence oxidoreductases open up shorter synthesis routes based on a more direct access to the target products. The generally very mild reaction conditions may also reduce the environmental impact of biocatalytic reactions compared to classical counterparts. In this Review, we critically summarise the most important recent developments in the field of biocatalytic oxidation chemistry and identify the most pressing bottlenecks as well as promising solutions.
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Affiliation(s)
- JiaJia Dong
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Elena Fernández‐Fueyo
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Frank Hollmann
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Caroline E. Paul
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Milja Pesic
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Sandy Schmidt
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Yonghua Wang
- School of Food Science and EngineeringSouth China University of TechnologyGuangzhou510640P. R. China
| | - Sabry Younes
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Wuyuan Zhang
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
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97
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Le‐Huu P, Rekow D, Krüger C, Bokel A, Heidt T, Schaubach S, Claasen B, Hölzel S, Frey W, Laschat S, Urlacher VB. Chemoenzymatic Route to Oxyfunctionalized Cembranoids Facilitated by Substrate and Protein Engineering. Chemistry 2018; 24:12010-12021. [DOI: 10.1002/chem.201802250] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/27/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Priska Le‐Huu
- Institute of BiochemistryHeinrich-Heine University Düsseldorf Universitätsstrasse 1 40225 Düsseldorf Germany
| | - Dominik Rekow
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Claudia Krüger
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Ansgar Bokel
- Institute of BiochemistryHeinrich-Heine University Düsseldorf Universitätsstrasse 1 40225 Düsseldorf Germany
| | - Tanja Heidt
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Sebastian Schaubach
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Birgit Claasen
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Sebastian Hölzel
- Institute of BiochemistryHeinrich-Heine University Düsseldorf Universitätsstrasse 1 40225 Düsseldorf Germany
| | - Wolfgang Frey
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Sabine Laschat
- Institute of Organic ChemistryUniversity Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Vlada B. Urlacher
- Institute of BiochemistryHeinrich-Heine University Düsseldorf Universitätsstrasse 1 40225 Düsseldorf Germany
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98
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Dong J, Fernández-Fueyo E, Hollmann F, Paul CE, Pesic M, Schmidt S, Wang Y, Younes S, Zhang W. Biokatalytische Oxidationsreaktionen - aus der Sicht eines Chemikers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800343] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- JiaJia Dong
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Elena Fernández-Fueyo
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Frank Hollmann
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Caroline E. Paul
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Milja Pesic
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Sandy Schmidt
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Yonghua Wang
- School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 P. R. China
| | - Sabry Younes
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Wuyuan Zhang
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
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99
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Luirink RA, Dekker SJ, Capoferri L, Janssen LF, Kuiper CL, Ari ME, Vermeulen NP, Vos JC, Commandeur JN, Geerke DP. A combined computational and experimental study on selective flucloxacillin hydroxylation by cytochrome P450 BM3 variants. J Inorg Biochem 2018; 184:115-122. [DOI: 10.1016/j.jinorgbio.2018.04.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/23/2018] [Accepted: 04/18/2018] [Indexed: 12/20/2022]
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100
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Mallinson SJB, Machovina MM, Silveira RL, Garcia-Borràs M, Gallup N, Johnson CW, Allen MD, Skaf MS, Crowley MF, Neidle EL, Houk KN, Beckham GT, DuBois JL, McGeehan JE. A promiscuous cytochrome P450 aromatic O-demethylase for lignin bioconversion. Nat Commun 2018; 9:2487. [PMID: 29950589 PMCID: PMC6021390 DOI: 10.1038/s41467-018-04878-2] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/26/2018] [Indexed: 11/18/2022] Open
Abstract
Microbial aromatic catabolism offers a promising approach to convert lignin, a vast source of renewable carbon, into useful products. Aryl-O-demethylation is an essential biochemical reaction to ultimately catabolize coniferyl and sinapyl lignin-derived aromatic compounds, and is often a key bottleneck for both native and engineered bioconversion pathways. Here, we report the comprehensive characterization of a promiscuous P450 aryl-O-demethylase, consisting of a cytochrome P450 protein from the family CYP255A (GcoA) and a three-domain reductase (GcoB) that together represent a new two-component P450 class. Though originally described as converting guaiacol to catechol, we show that this system efficiently demethylates both guaiacol and an unexpectedly wide variety of lignin-relevant monomers. Structural, biochemical, and computational studies of this novel two-component system elucidate the mechanism of its broad substrate specificity, presenting it as a new tool for a critical step in biological lignin conversion.
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Affiliation(s)
- Sam J B Mallinson
- Molecular Biophysics, School of Biological Sciences, Institute of Biological and Biomedical Sciences, University of Portsmouth, Portsmouth, PO1 2DY, UK
| | - Melodie M Machovina
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, 59717, USA
| | - Rodrigo L Silveira
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
- Institute of Chemistry, University of Campinas, Campinas, Sao Paulo, 13083-970, Brazil
| | - Marc Garcia-Borràs
- Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA, 90095, USA
| | - Nathan Gallup
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
- Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA, 90095, USA
| | - Christopher W Johnson
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Mark D Allen
- Molecular Biophysics, School of Biological Sciences, Institute of Biological and Biomedical Sciences, University of Portsmouth, Portsmouth, PO1 2DY, UK
| | - Munir S Skaf
- Institute of Chemistry, University of Campinas, Campinas, Sao Paulo, 13083-970, Brazil
| | - Michael F Crowley
- Biosciences Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Ellen L Neidle
- Department of Microbiology, University of Georgia, Athens, GA, 30602, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA, 90095, USA.
| | - Gregg T Beckham
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA.
| | - Jennifer L DuBois
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, 59717, USA.
| | - John E McGeehan
- Molecular Biophysics, School of Biological Sciences, Institute of Biological and Biomedical Sciences, University of Portsmouth, Portsmouth, PO1 2DY, UK.
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