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Dimos N, Helmer CPO, Chánique AM, Wahl MC, Kourist R, Hilal T, Loll B. CryoEM analysis of small plant biocatalysts at sub-2 Å resolution. Acta Crystallogr D Struct Biol 2022; 78:113-123. [PMID: 34981767 PMCID: PMC8725159 DOI: 10.1107/s205979832101216x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/16/2021] [Indexed: 12/02/2022] Open
Abstract
Enzyme catalysis has emerged as a key technology for developing efficient, sustainable processes in the chemical, biotechnological and pharmaceutical industries. Plants provide large and diverse pools of biosynthetic enzymes that facilitate complex reactions, such as the formation of intricate terpene carbon skeletons, with exquisite specificity. High-resolution structural analysis of these enzymes is crucial in order to understand their mechanisms and modulate their properties by targeted engineering. Although cryo-electron microscopy (cryoEM) has revolutionized structural biology, its applicability to high-resolution structural analysis of comparatively small enzymes has so far been largely unexplored. Here, it is shown that cryoEM can reveal the structures of plant borneol dehydrogenases of ∼120 kDa at or below 2 Å resolution, paving the way for the rapid development of new biocatalysts that can provide access to bioactive terpenes and terpenoids.
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Affiliation(s)
- Nicole Dimos
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, Pharmacy, Laboratory of Structural Biochemistry, Free University of Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Carl P. O. Helmer
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, Pharmacy, Laboratory of Structural Biochemistry, Free University of Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Andrea M. Chánique
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
- Department of Chemical and Bioprocesses Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 7810000 Santiago, Chile
| | - Markus C. Wahl
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, Pharmacy, Laboratory of Structural Biochemistry, Free University of Berlin, Takustrasse 6, 14195 Berlin, Germany
- Macromolecular Crystallography, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - Robert Kourist
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Tarek Hilal
- Institute of Chemistry and Biochemistry, Research Center of Electron Microscopy and Core Facility BioSupraMol, Free University of Berlin, Fabeckstrasse 36A, 14195 Berlin, Germany
| | - Bernhard Loll
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, Pharmacy, Laboratory of Structural Biochemistry, Free University of Berlin, Takustrasse 6, 14195 Berlin, Germany
- moloX GmbH, Takustrasse 6, 14195 Berlin, Germany
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Wu JR, Lu PC, Khine AA, Simaremare SRS, Hung CC, Yiin LM, Ho TJ, Tung CH, Chen HP. Borneol dehydrogenase from Pseudomonas sp. TCU-HL1 possesses novel quinuclidinone reductase activities. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.1955865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jia-Ru Wu
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan
| | - Pei-Chieh Lu
- Department of Biochemistry, Tzu Chi University, Hualien, Taiwan
| | - Aye Aye Khine
- Department of Biochemistry, Tzu Chi University, Hualien, Taiwan
| | - Sailent Rizki Sari Simaremare
- Department of Public Health and Institute of Medical Science, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chien-Chi Hung
- Department of Public Health and Institute of Medical Science, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Lin-Ming Yiin
- Department of Public Health and Institute of Medical Science, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Tsung-Jung Ho
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan
- Department of Chinese Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan
- School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chi-Hua Tung
- Department of Bioinformatics, Chung Hua University, Hsinchu City, Taiwan
- Department of Optoelectronics and Materials Engineering, Chung Hua University, Hsinchu City, Taiwan
| | - Hao-Ping Chen
- Integration Center of Traditional Chinese and Modern Medicine, Hualien Tzu Chi Hospital, Hualien, Taiwan
- Department of Biochemistry, Tzu Chi University, Hualien, Taiwan
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Chánique AM, Dimos N, Drienovská I, Calderini E, Pantín MP, Helmer CPO, Hofer M, Sieber V, Parra LP, Loll B, Kourist R. A Structural View on the Stereospecificity of Plant Borneol-Type Dehydrogenases. ChemCatChem 2021; 13:2262-2277. [PMID: 34262629 PMCID: PMC8261865 DOI: 10.1002/cctc.202100110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/07/2021] [Indexed: 12/16/2022]
Abstract
The development of sustainable processes for the valorization of byproducts and other waste streams remains an ongoing challenge in the field of catalysis. Racemic borneol, isoborneol and camphor are currently produced from α-pinene, a side product from the production of cellulose. The pure enantiomers of these monoterpenoids have numerous applications in cosmetics and act as reagents for asymmetric synthesis, making an enzymatic route for their separation into optically pure enantiomers a desirable goal. Known short-chain borneol-type dehydrogenases (BDHs) from plants and bacteria lack the required specificity, stability or activity for industrial utilization. Prompted by reports on the presence of pure (-)-borneol and (-)-camphor in essential oils from rosemary, we set out to investigate dehydrogenases from the genus Salvia and discovered a dehydrogenase with high specificity (E>120) and high specific activity (>0.02 U mg-1) for borneol and isoborneol. Compared to other specific dehydrogenases, the one reported here shows remarkably higher stability, which was exploited to obtain the first three-dimensional structure of an enantiospecific borneol-type short-chain dehydrogenase. This, together with docking studies, led to the identification of a hydrophobic pocket in the enzyme that plays a crucial role in the stereo discrimination of bornane-type monoterpenoids. The kinetic resolution of borneol and isoborneol can be easily integrated into the existing synthetic route from α-pinene to camphor thereby allowing the facile synthesis of optically pure monoterpenols from an abundant renewable source.
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Affiliation(s)
- Andrea M Chánique
- Institute of Molecular Biotechnology Graz University of Technology Petersgasse 14 8010 Graz Austria
- Department of Chemical and Bioprocesses Engineering School of Engineering Pontificia Universidad Católica de Chile Vicuña Mackenna 4860 7810000 Santiago Chile
| | - Nicole Dimos
- Institute of Chemistry and Biochemistry Department of Biology Chemistry Pharmacy Laboratory of Structural Biochemistry Free University of Berlin Takustr. 6 14195 Berlin Germany
| | - Ivana Drienovská
- Institute of Molecular Biotechnology Graz University of Technology Petersgasse 14 8010 Graz Austria
| | - Elia Calderini
- Institute of Molecular Biotechnology Graz University of Technology Petersgasse 14 8010 Graz Austria
| | - Mónica P Pantín
- Institute of Molecular Biotechnology Graz University of Technology Petersgasse 14 8010 Graz Austria
| | - Carl P O Helmer
- Institute of Chemistry and Biochemistry Department of Biology Chemistry Pharmacy Laboratory of Structural Biochemistry Free University of Berlin Takustr. 6 14195 Berlin Germany
| | - Michael Hofer
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB Schulgasse 11a 94315 Straubing Germany
| | - Volker Sieber
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB Schulgasse 11a 94315 Straubing Germany
- Technical University of Munich Straubing Campus for Biotechnology and Sustainability Schulgasse 16 94315 Straubing Germany
| | - Loreto P Parra
- Institute for Biological and Medical Engineering Schools of Engineering Medicine and Biological Sciences Pontificia Universidad Católica de Chile Vicuña Mackenna 4860 7810000 Santiago Chile
| | - Bernhard Loll
- Institute of Chemistry and Biochemistry Department of Biology Chemistry Pharmacy Laboratory of Structural Biochemistry Free University of Berlin Takustr. 6 14195 Berlin Germany
| | - Robert Kourist
- Institute of Molecular Biotechnology Graz University of Technology Petersgasse 14 8010 Graz Austria
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