1
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Lu J, Yu Y, Li Z, Luo J, Deng L. Practical Synthesis of Chiral α-Aminophosphonates with Weak Bonding Organocatalysis at ppm Loading. J Am Chem Soc 2024. [PMID: 38762889 DOI: 10.1021/jacs.4c04129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
α-Aminophosphonic acids as an important class of bioisosteres of α-amino acids demonstrate various biologically important activities. We report here the development of a highly enantioselective isomerization of α-iminophosphonates enabled by an extraordinarily efficient organocatalyst. This organocatalyst afforded a total turnover number (TON) of 20,000-1,000,000 for a wide range of α-alkyl iminophosphonates. Even at a parts-per-million (ppm) loading, this catalyst achieved a complete reaction in greater than 93% enantiomeric excess (ee). Computational studies revealed that this small-molecule catalyst achieved enzyme-like efficiency via a network of weak bonding interactions that effectively preorganized the substrate and catalyst toward a transition-state-like complex. Considering the substrate tolerance, catalytic efficiency, and mechanism, this organocatalyst could be regarded as a small-molecule isomerase.
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Affiliation(s)
- Jiaxiang Lu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China
| | - Yang Yu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China
| | - Zhenghua Li
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China
| | - Jisheng Luo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China
| | - Li Deng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, Hangzhou 310030, China
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2
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Belov F, Gazizova A, Bork H, Gröger H, von Langermann J. Crystallization Assisted Dynamic Kinetic Resolution for the Synthesis of (R)-β-Methylphenethylamine. Chembiochem 2024:e202400203. [PMID: 38602845 DOI: 10.1002/cbic.202400203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/05/2024] [Accepted: 04/09/2024] [Indexed: 04/13/2024]
Abstract
This study explores a combination of the concept of enantioselective enzymatic synthesis of β-chiral amines through transamination with in situ product crystallization (ISPC) to overcome product inhibition. Using 2-phenylpropanal as a readily available and easily racemizing substrate of choice, (R)-β-methylphenethylamine ((R)-2-phenylpropan-1-amine) concentrations of up to 250 mM and enantiomeric excesses of up to 99 % are achieved when using a commercially available transaminase from Ruegeria pomeroyi in a fed-batch based dynamic kinetic resolution reaction on preparative scale. The source of substrate decomposition during the reaction is also investigated and the resulting unwanted byproduct formation is successfully reduced to insignificant levels.
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Affiliation(s)
- Feodor Belov
- Institute of Chemistry, Biocatalytic Synthesis Group, Otto von Guericke University of Magdeburg, Building 28, Universitätsplatz 2, 39106, Magdeburg, Germany
| | - Alina Gazizova
- Institute of Chemistry, Department of Technical Chemistry, University of Rostock, Albert-Einstein-Str. 3A, 18059, Rostock, Germany
| | - Hannah Bork
- Faculty of Chemistry, Bielefeld University, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Harald Gröger
- Faculty of Chemistry, Bielefeld University, Universitätsstrasse 25, 33615, Bielefeld, Germany
| | - Jan von Langermann
- Institute of Chemistry, Biocatalytic Synthesis Group, Otto von Guericke University of Magdeburg, Building 28, Universitätsplatz 2, 39106, Magdeburg, Germany
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3
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Duan ZW, Wang YW, Shen DD, Sun XQ, Wang P. Engineered the Active Site of ω-Transaminase for Enhanced Asymmetric Synthesis Towards (S)-1-[4-(Trifluoromethyl)phenyl]ethylamine. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04886-7. [PMID: 38381312 DOI: 10.1007/s12010-024-04886-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2024] [Indexed: 02/22/2024]
Abstract
ω-Transaminase (ω-TA) is a promising biocatalyst for the synthesis of chiral amines. In this study, a ω-TA derived from Vitreoscilla stercoraria DSM 513 (VsTA) was heterologous expressed in recombinant E. coli cells and applied to reduce 4'-(trifluoromethyl)acetophenone (TAP) to (S)-1-[4-(trifluoromethyl)phenyl]ethylamine ((S)-TPE), a pharmaceutical intermediate of chiral amine. Aimed to a more efficient synthesis of (S)-TPE, VsTA was further engineered via a semi-rational strategy. Compared to wild-type VsTA, the obtained R411A variant exhibited 2.39 times higher activity towards TAP and enhanced catalytic activities towards other prochiral aromatic ketones. Additionally, better thermal stability for R411A variant was observed with 25.4% and 16.3% increase in half-life at 30 °C and 40 °C, respectively. Structure-guided analysis revealed that the activity improvement of R411A variant was attributed to the introduction of residue A411, which is responsible for the increase in the hydrophobicity of substrate tunnel and the alleviation of steric hindrance, thereby facilitating the accessibility of hydrophobic substrate TAP to the active center of VsTA. This study provides an efficient strategy for the engineering of ω-TA based on semi-rational approach and has the potential for the molecular modification of other biocatalysts.
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Affiliation(s)
- Zhi-Wen Duan
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
- Key Laboratory of Pharmaceutical Engineering of Zhejiang Province, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Yao-Wu Wang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
- Key Laboratory of Pharmaceutical Engineering of Zhejiang Province, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China
| | - Da-Dong Shen
- Research & Development Center, Zhejiang Medicine Co. Ltd., Shaoxing, 312500, People's Republic of China
| | - Xin-Qiang Sun
- Research & Development Center, Zhejiang Medicine Co. Ltd., Shaoxing, 312500, People's Republic of China
| | - Pu Wang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
- Key Laboratory of Pharmaceutical Engineering of Zhejiang Province, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
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4
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Yuan B, Yang D, Qu G, Turner NJ, Sun Z. Biocatalytic reductive aminations with NAD(P)H-dependent enzymes: enzyme discovery, engineering and synthetic applications. Chem Soc Rev 2024; 53:227-262. [PMID: 38059509 DOI: 10.1039/d3cs00391d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Chiral amines are pivotal building blocks for the pharmaceutical industry. Asymmetric reductive amination is one of the most efficient and atom economic methodologies for the synthesis of optically active amines. Among the various strategies available, NAD(P)H-dependent amine dehydrogenases (AmDHs) and imine reductases (IREDs) are robust enzymes that are available from various sources and capable of utilizing a broad range of substrates with high activities and stereoselectivities. AmDHs and IREDs operate via similar mechanisms, both involving a carbinolamine intermediate followed by hydride transfer from the co-factor. In addition, both groups catalyze the formation of primary and secondary amines utilizing both organic and inorganic amine donors. In this review, we discuss advances in developing AmDHs and IREDs as biocatalysts and focus on evolutionary history, substrate scope and applications of the enzymes to provide an outlook on emerging industrial biotechnologies of chiral amine production.
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Affiliation(s)
- Bo Yuan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Dameng Yang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
| | - Ge Qu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Nicholas J Turner
- Department of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK.
| | - Zhoutong Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
- Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
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5
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Verma S, Paliwal S. Recent Developments and Applications of Biocatalytic and Chemoenzymatic Synthesis for the Generation of Diverse Classes of Drugs. Curr Pharm Biotechnol 2024; 25:448-467. [PMID: 37885105 DOI: 10.2174/0113892010238984231019085154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 08/26/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
Biocatalytic and chemoenzymatic biosynthesis are powerful methods of organic chemistry that use enzymes to execute selective reactions and allow the efficient production of organic compounds. The advantages of these approaches include high selectivity, mild reaction conditions, and the ability to work with complex substrates. The utilization of chemoenzymatic techniques for the synthesis of complicated compounds has lately increased dramatically in the area of organic chemistry. Biocatalytic technologies and modern synthetic methods are utilized synergistically in a multi-step approach to a target molecule under this paradigm. Chemoenzymatic techniques are promising for simplifying access to essential bioactive compounds because of the remarkable regio- and stereoselectivity of enzymatic transformations and the reaction diversity of modern organic chemistry. Enzyme kits may include ready-to-use, reproducible biocatalysts. Its use opens up new avenues for the synthesis of active therapeutic compounds and aids in drug development by synthesizing active components to construct scaffolds in a targeted and preparative manner. This study summarizes current breakthroughs as well as notable instances of biocatalytic and chemoenzymatic synthesis. To assist organic chemists in the use of enzymes for synthetic applications, it also provides some basic guidelines for selecting the most appropriate enzyme for a targeted reaction while keeping aspects like cofactor requirement, solvent tolerance, use of whole cell or isolated enzymes, and commercial availability in mind.
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Affiliation(s)
- Swati Verma
- Department of Pharmacy, ITS College of Pharmacy, Muradnagar, Ghaziabad, India
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, 304022, Rajasthan, India
| | - Sarvesh Paliwal
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, 304022, Rajasthan, India
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6
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Villamil V, Vairoletti F, Tijman A, López G, Peixoto de Abreu Lima A, Saiz C, Iglesias C, Mahler G. Novel Kinetic Resolution of Thiazolo-Benzimidazolines Using MAO Enzymes. ACS OMEGA 2023; 8:42114-42125. [PMID: 38024698 PMCID: PMC10652373 DOI: 10.1021/acsomega.3c03223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023]
Abstract
The kinetic resolution of racemic 1H,3H-thiazolo[3,4-a]benzimidazoline (TBIM) heterocycles was achieved using E. coli whole cells expressing the MAO-N D11 enzyme. Several cosolvents were screened using TBIM 2a as the substrate. DMF was the best cosolvent, affording the pure enantiomer (+)-2a in 44% yield, 94% ee. The stereochemistry of TBIM was predicted by means of ab initio calculations of optical rotation and circular dichroism spectra. The reaction scope was investigated for 11 substituted (±) TBIM using an optimized protocol. The best yield and % ee were obtained for the nonsubstituted 2a. Among the substituted compounds, the 5-substituted-TBIM showed better % ee than the 4-substituted one. The small electron donor group (Me) led to better % ee than the electron-withdrawing groups (-NO2 and -CO2Et), and the bulky naphthyl group was detrimental for the kinetic resolution. Docking experiments and molecular dynamics (MD) simulations were employed to further understand the interactions between MAO-N D11 and the thiazolo-benzimidazoline substrates. For 2a, the MD showed favorable positioning and binding energy for both enantiomers, thus suggesting that this kinetic resolution is influenced not only by the active site but also by the entry tunnel. This work constitutes the first report of the enzymatic kinetic resolution applied to TBIM heterocycles.
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Affiliation(s)
- Valentina Villamil
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Franco Vairoletti
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Ariel Tijman
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Gonzalo López
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Alejandro Peixoto de Abreu Lima
- Departamento
de Química Orgánica, Laboratorio de Síntesis
Orgánica, Facultad de Quimica, Universidad
de la Republica, Gral
Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Cecilia Saiz
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - César Iglesias
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Graciela Mahler
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
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7
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Yu Y, Rué Casamajo A, Finnigan W, Schnepel C, Barker R, Morrill C, Heath RS, De Maria L, Turner NJ, Scrutton NS. Structure-Based Design of Small Imine Reductase Panels for Target Substrates. ACS Catal 2023; 13:12310-12321. [PMID: 37736118 PMCID: PMC10510103 DOI: 10.1021/acscatal.3c02278] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/20/2023] [Indexed: 09/23/2023]
Abstract
Biocatalysis is important in the discovery, development, and manufacture of pharmaceuticals. However, the identification of enzymes for target transformations of interest requires major screening efforts. Here, we report a structure-based computational workflow to prioritize protein sequences by a score based on predicted activities on substrates, thereby reducing a resource-intensive laboratory-based biocatalyst screening. We selected imine reductases (IREDs) as a class of biocatalysts to illustrate the application of the computational workflow termed IREDFisher. Validation by using published data showed that IREDFisher can retrieve the best enzymes and increase the hit rate by identifying the top 20 ranked sequences. The power of IREDFisher is confirmed by computationally screening 1400 sequences for chosen reductive amination reactions with different levels of complexity. Highly active IREDs were identified by only testing 20 samples in vitro. Our speed test shows that it only takes 90 min to rank 85 sequences from user input and 30 min for the established IREDFisher database containing 591 IRED sequences. IREDFisher is available as a user-friendly web interface (https://enzymeevolver.com/IREDFisher). IREDFisher enables the rapid discovery of IREDs for applications in synthesis and directed evolution studies, with minimal time and resource expenditure. Future use of the workflow with other enzyme families could be implemented following the modification of the workflow scoring function.
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Affiliation(s)
- Yuqi Yu
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
- Augmented
Biologics Discovery & Design, Department of Biologics Engineering, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB21 6GH, U.K.
| | - Arnau Rué Casamajo
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - William Finnigan
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Christian Schnepel
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Rhys Barker
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Charlotte Morrill
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Rachel S. Heath
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Leonardo De Maria
- Medicinal
Chemistry, Research and Early Development, Respiratory and Immunology
(RI), BioPharmaceuticals R&D, AstraZeneca, Gothenburg 43150, Sweden
| | - Nicholas J. Turner
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
| | - Nigel S. Scrutton
- Department
of Chemistry, The University of Manchester,
Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K.
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8
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Pickl M, Ebner M, Gittings S, Clapés P, Kroutil W. Biocatalytic Transamination of Aldolase-Derived 3-Hydroxy Ketones. Adv Synth Catal 2023; 365:1485-1495. [PMID: 38516568 PMCID: PMC10952931 DOI: 10.1002/adsc.202300201] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/12/2023] [Indexed: 03/23/2024]
Abstract
Although optical pure amino alcohols are in high demand due to their widespread applicability, they still remain challenging to synthesize, since commonly elaborated protection strategies are required. Here, a multi-enzymatic methodology is presented that circumvents this obstacle furnishing enantioenriched 1,3-amino alcohols out of commodity chemicals. A Type I aldolase forged the carbon backbone with an enantioenriched aldol motif, which was subsequently subjected to enzymatic transamination. A panel of 194 TAs was tested on diverse nine aldol products prepared through different nucleophiles and electrophiles. Due to the availability of (R)- and (S)-selective TAs, both diastereomers of the 1,3-amino alcohol motif were accessible. A two-step process enabled the synthesis of the desired amino alcohols with up to three chiral centers with de up to >97 in the final products.
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Affiliation(s)
- Mathias Pickl
- Department of Chemical BiologyInstituto de Química Avanzada de Cataluña (IQAC-CSIC)Jordi Girona 18-2608034BarcelonaSpain
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Markus Ebner
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
| | - Samantha Gittings
- Prozomix Ltd. West End Industrial EstateHaltwhistleNorthumberland NE49 9HAU.K
| | - Pere Clapés
- Department of Chemical BiologyInstituto de Química Avanzada de Cataluña (IQAC-CSIC)Jordi Girona 18-2608034BarcelonaSpain
| | - Wolfgang Kroutil
- Institute of ChemistryUniversity of GrazHeinrichstrasse 288010GrazAustria
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9
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Wang H, Masuku MV, Tao Y, Yang J, Kuang Y, Lyu C, Huang J, Yang S. Improved Stability and Catalytic Efficiency of ω-Transaminase in Aqueous Mixture of Deep Eutectic Solvents. Molecules 2023; 28:molecules28093895. [PMID: 37175305 PMCID: PMC10180074 DOI: 10.3390/molecules28093895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/21/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
The efficient biosynthesis of chiral amines at an industrial scale to meet the high demand from industries that require chiral amines as precursors is challenging due to the poor stability and low catalytic efficiency of ω-transaminases (ω-TAs). Herein, this study adopted a green and efficient solvent engineering method to explore the effects of various aqueous solutions of deep eutectic solvents (DESs) as cosolvents on the catalytic efficiency and stability of ω-TA. Binary- and ternary-based DESs were used as cosolvents in enhancing the catalytic activity and stability of a ω-TA variant from Aspergillus terreus (E133A). The enzyme exhibited a higher catalytic activity in a ternary-based DES that was 2.4-fold higher than in conventional buffer. Moreover, the thermal stability was enhanced by a magnitude of 2.7, with an improvement in storage stability. Molecular docking studies illustrated that the most potent DES established strong hydrogen bond interactions with the enzyme's amino acid, which enhanced the catalytic efficiency and improved the stability of the ω-TA. Molecular docking is essential in designing DESs for a specific enzyme.
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Affiliation(s)
- Hongpeng Wang
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Mercy Vimbai Masuku
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Yachen Tao
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Jiayao Yang
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Yi Kuang
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang A&F University, Hangzhou 311300, China
| | - Changjiang Lyu
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Jun Huang
- Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product, School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Shengxiang Yang
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang A&F University, Hangzhou 311300, China
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10
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Lv T, Feng J, Chen X, Luo Y, Wu Q, Zhu D, Ma Y. Desymmetric Reductive Amination of 1,3-Cyclopentadiones to Single Stereoisomer of β-Amino Ketones with an All-Carbon Quaternary Stereocenter by Engineered Amine Dehydrogenases. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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11
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Metagenomic Type IV Aminotransferases Active toward (R)-Methylbenzylamine. Catalysts 2023. [DOI: 10.3390/catal13030587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
Aminotransferases (ATs) are pyridoxal 5′-phosphate-dependent enzymes that catalyze the reversible transfer of an amino group from an amino donor to a keto substrate. ATs are promising biocatalysts that are replacing traditional chemical routes for the production of chiral amines. In this study, an in silico-screening of a metagenomic library isolated from the Curonian Lagoon identified 11 full-length fold type IV aminotransferases that were successfully expressed and used for substrate profiling. Three of them (AT-872, AT-1132, and AT-4421) were active toward (R)-methylbenzylamine. Purified proteins showed activity with L- and D-amino acids and various aromatic compounds such as (R)-1-aminotetraline. AT-872 and AT-1132 exhibited thermostability and retained about 55% and 80% of their activities, respectively, even after 24 h of incubation at 50 °C. Active site modeling revealed that AT-872 and AT-4421 have an unusual active site environment similar to the AT of Haliscomenobacter hydrossis, while AT-1132 appeared to be structurally related to the AT from thermophilic archaea Geoglobus acetivorans. Thus, we have identified and characterized PLP fold type IV ATs that were active toward both amino acids and a variety of (R)-amines.
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12
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Chen FF, He XF, Zhu XX, Zhang Z, Shen XY, Chen Q, Xu JH, Turner NJ, Zheng GW. Discovery of an Imine Reductase for Reductive Amination of Carbonyl Compounds with Sterically Challenging Amines. J Am Chem Soc 2023; 145:4015-4025. [PMID: 36661845 DOI: 10.1021/jacs.2c11354] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The synthesis of structurally diverse amines is of fundamental significance in the pharmaceutical industry due to the ubiquitous presence of amine motifs in biologically active molecules. Biocatalytic reductive amination for amine production has attracted great interest owing to its synthetic advantages. Herein, we report the direct synthesis of a wide range of sterically demanding secondary amines, including several important active pharmaceutical ingredients and pharmaceutical intermediates, via reductive amination of carbonyl substrates and bulky amine nucleophiles employing imine reductases. Key to success for this route is the identification of an imine reductase from Penicillium camemberti with unusual substrate specificity and its further engineering, which empowered the accommodation of a broad range of sterically demanding amine nucleophiles encompassing linear alkyl and (hetero)aromatic (oxy)alkyl substituents and the formation of final amine products with up to >99% conversion. The practical utility of the biocatalytic route has been demonstrated by its application in the preparative synthesis of the anti-hyperparathyroidism drug cinacalcet.
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Affiliation(s)
- Fei-Fei Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xue-Feng He
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xin-Xin Zhu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Zhi Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xin-Yuan Shen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Qi Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Nicholas J Turner
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - Gao-Wei Zheng
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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13
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Belov F, Mildner A, Knaus T, Mutti FG, von Langermann J. Crystallization-based downstream processing of ω-transaminase- and amine dehydrogenase-catalyzed reactions. REACT CHEM ENG 2023. [DOI: 10.1039/d2re00496h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
This study highlights the use of selective crystallization as a downstream-processing concept for amine products from biocatalytic reactions.
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14
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Xiang C, Ao YF, Höhne M, Bornscheuer UT. Shifting the pH Optima of ( R)-Selective Transaminases by Protein Engineering. Int J Mol Sci 2022; 23:ijms232315347. [PMID: 36499674 PMCID: PMC9736275 DOI: 10.3390/ijms232315347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/01/2022] [Accepted: 12/03/2022] [Indexed: 12/12/2022] Open
Abstract
Amine transaminases (ATAs) are powerful biocatalysts for the stereoselective synthesis of chiral amines. However, wild-type ATAs usually show pH optima at slightly alkaline values and exhibit low catalytic activity under physiological conditions. For efficient asymmetric synthesis ATAs are commonly used in combination with lactate dehydrogenase (LDH, optimal pH: 7.5) and glucose dehydrogenase (GDH, optimal pH: 7.75) to shift the equilibrium towards the synthesis of the target chiral amine and hence their pH optima should fit to each other. Based on a protein structure alignment, variants of (R)-selective transaminases were rationally designed, produced in E. coli, purified and subjected to biochemical characterization. This resulted in the discovery of the variant E49Q of the ATA from Aspergillus fumigatus, for which the pH optimum was successfully shifted from pH 8.5 to 7.5 and this variant furthermore had a two times higher specific activity than the wild-type protein at pH 7.5. A possible mechanism for this shift of the optimal pH is proposed. Asymmetric synthesis of (R)-1-phenylethylamine from acetophenone in combination with LDH and GDH confirmed that the variant E49Q shows superior performance at pH 7.5 compared to the wild-type enzyme.
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Affiliation(s)
- Chao Xiang
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17487 Greifswald, Germany
| | - Yu-Fei Ao
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17487 Greifswald, Germany
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Matthias Höhne
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17487 Greifswald, Germany
| | - Uwe T. Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, 17487 Greifswald, Germany
- Correspondence:
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15
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Knaus T, Corrado ML, Mutti FG. One-Pot Biocatalytic Synthesis of Primary, Secondary, and Tertiary Amines with Two Stereocenters from α,β-Unsaturated Ketones Using Alkyl-Ammonium Formate. ACS Catal 2022; 12:14459-14475. [PMID: 36504913 PMCID: PMC9724091 DOI: 10.1021/acscatal.2c03052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 10/20/2022] [Indexed: 11/11/2022]
Abstract
The efficient asymmetric catalytic synthesis of amines containing more than one stereogenic center is a current challenge. Here, we present a biocatalytic cascade that combines ene-reductases (EReds) with imine reductases/reductive aminases (IReds/RedAms) to enable the conversion of α,β-unsaturated ketones into primary, secondary, and tertiary amines containing two stereogenic centers in very high chemical purity (up to >99%), a diastereomeric ratio, and an enantiomeric ratio (up to >99.8:<0.2). Compared with previously reported strategies, our strategy could synthesize two, three, or even all four of the possible stereoisomers of the amine products while precluding the formation of side-products. Furthermore, ammonium or alkylammonium formate buffer could be used as the only additional reagent since it acted both as an amine donor and as a source of reducing equivalents. This was achieved through the implementation of an NADP-dependent formate dehydrogenase (FDH) for the in situ recycling of the NADPH coenzyme, thus leading to increased atom economy for this biocatalytic transformation. Finally, this dual-enzyme ERed/IRed cascade also exhibits a complementarity with the recently reported EneIRED enzymes for the synthesis of cyclic six-membered ring amines. The ERed/IRed method yielded trans-1,2 and cis-1,3 substituted cyclohexylamines in high optical purities, whereas the EneIRED method was reported to yield one cis-1,2 and one trans-1,3 enantiomer. As a proof of concept, when 3-methylcyclohex-2-en-1-one was converted into secondary and tertiary chiral amines with different amine donors, we could obtain all the four possible stereoisomer products. This result exemplifies the versatility of this method and its potential for future wider utilization in asymmetric synthesis by expanding the toolbox of currently available dehydrogenases via enzyme engineering and discovery.
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16
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Gal CA, Barabás LE, Varga A, Csuka P, Bencze LC, Toșa MI, Poppe L, Paizs C. How to identify and characterize novel transaminases? Two novel transaminases with opposite enantioselectivity for the synthesis of optically active amines. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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17
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Kaličanin N, Kovačević G, Spasojević M, Prodanović O, Jovanović-Šanta S, Škorić D, Opsenica D, Prodanović R. Immobilization of ArRMut11 omega-transaminase for increased operational stability and reusability in the synthesis of 3α-amino-5α-androstan-17β-ol. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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18
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More GS, Kushwaha N, Bal R, Srivastava R. Thermal and photocatalytic cascade one-pot synthesis of secondary amine using multifunctional Pd decorated MOF-derived CeO2. J Colloid Interface Sci 2022; 619:14-27. [DOI: 10.1016/j.jcis.2022.03.093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 02/07/2023]
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19
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Sang X, Tong F, Zeng Z, Wu M, Yuan B, Sun Z, Sheng X, Qu G, Alcalde M, Hollmann F, Zhang W. A Biocatalytic Platform for the Synthesis of Enantiopure Propargylic Alcohols and Amines. Org Lett 2022; 24:4252-4257. [PMID: 35670732 PMCID: PMC9208015 DOI: 10.1021/acs.orglett.2c01547] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Propargylic alcohols
and amines are versatile building blocks in
organic synthesis. We demonstrate a straightforward enzymatic cascade
to synthesize enantiomerically pure propargylic alcohols and amines
from readily available racemic starting materials. In the first step,
the peroxygenase from Agrocybe aegerita converted
the racemic propargylic alcohols into the corresponding ketones, which
then were converted into the enantiomerically pure alcohols using
the (R)-selective alcohol dehydrogenase from Lactobacillus kefir or the (S)-selective
alcohol dehydrogenase from Thermoanaerobacter brokii. Moreover, an enzymatic Mitsunobu-type conversion of the racemic
alcohols into enantiomerically enriched propargylic amines using (R)-selective amine transaminase from Aspergillus
terreus or (S)-selective amine transaminase
from Chromobacterium violaceum was established. The
one-pot two-step cascade reaction yielded a broad range of enantioenriched
alcohol and amine products in 70–99% yield.
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Affiliation(s)
- Xianke Sang
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, 88 Xianning Avenue, Xianning, Hubei 437100, China.,Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Feifei Tong
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Zhigang Zeng
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, 88 Xianning Avenue, Xianning, Hubei 437100, China
| | - Minghu Wu
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, 88 Xianning Avenue, Xianning, Hubei 437100, China
| | - Bo Yuan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Zhoutong Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Xiang Sheng
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Ge Qu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
| | - Miguel Alcalde
- Department of Biocatalysis, Institute of Catalysis, CSIC, 28049 Madrid, Spain
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Wuyuan Zhang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West Seventh Avenue, Tianjin 300308, China
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20
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Bennett M, Ducrot L, Vergne-Vaxelaire C, Grogan G. Structure and Mutation of the Native Amine Dehydrogenase MATOUAmDH2. Chembiochem 2022; 23:e202200136. [PMID: 35349204 PMCID: PMC9325545 DOI: 10.1002/cbic.202200136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/28/2022] [Indexed: 11/06/2022]
Abstract
Native Amine Dehydrogenases (nat-AmDHs) have recently emerged as a potentially valuable new reservoir of enzymes for the sustainable and selective synthesis of chiral amines, catalyzing the NAD(P)H-dependent ammoniation of carbonyl compounds with high activity and selectivity. MATOUAmDH2, recently identified from the Marine Atlas of Tara Oceans Unigenes (MATOUv1) database of eukaryotic genes, displays exceptional catalytic performance against its best identified substrate, isobutyraldehyde, as well as broader substrate scope than other nat-AmDHs. In the interests of providing a platform for the rational engineering of this and other nat-AmDHs, we have determined the structure of MATOUAmDH2 in complex with NADP + and also with the cofactor and cyclohexylamine. Monomers within the structure are representative of more open and closed conformations of the enzyme and illustrate the profound changes undergone by nat-AmDHs during the catalytic cycle. An alanine screen of active site residues revealed that M215A and L180A are more active than the wild-type enzyme for the amination of cyclohexanone with ammonia and methylamine respectively, the latter suggesting that AmDHs have the potential to be engineered for the improved production of secondary amines.
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Affiliation(s)
- Megan Bennett
- University of York Department of Chemistry, Chemistry, UNITED KINGDOM
| | - Laurine Ducrot
- Genoscope National Sequencing Center: Commissariat a l'energie atomique et aux energies alternatives Genoscope centre national de sequencage, Génomique Métabolique, FRANCE
| | - Carine Vergne-Vaxelaire
- Genoscope National Sequencing Center: Commissariat a l'energie atomique et aux energies alternatives Genoscope centre national de sequencage, Génomique Métabolique, FRANCE
| | - Gideon Grogan
- University of York Department of Chemistry, Chemistry, Heslington, YO10 5DD, York, UNITED KINGDOM
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21
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22
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Romero‐Fernandez M, Paradisi F. Stereo-divergent enzyme cascades to convert racemic 4-phenyl-2-butanol into either (S)- or (R)- corresponding chiral amine. Chembiochem 2022; 23:e202200108. [PMID: 35189014 PMCID: PMC9313814 DOI: 10.1002/cbic.202200108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 11/07/2022]
Abstract
The synthesis of enantiopure chiral amines from racemic alcohols is a key transformation in the chemical industry, e.g., in the production of active pharmaceutical ingredients (APIs). However, this reaction remains challenging. In this work, we propose a one-pot enzymatic cascade for the direct conversion of a racemic alcohol into either (S) - or (R) -enantiomers of the corresponding amine, with in-situ cofactor recycling. This enzymatic cascade consists of two enantio-complementary alcohol dehydrogenases, both NADH and NADPH oxidase for in-situ recycling of NAD(P) + cofactors, and either (S) - or (R) -enantioselective transaminase. This cell-free biocatalytic system has been successfully applied to the conversion of racemic 4-phenyl-2-butanol into the high value (S) - or (R) -enantiomers of the amine reaching good (73% (S) ) and excellent (>99% (R) ) enantioselectivities.
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Affiliation(s)
| | - Francesca Paradisi
- School of ChemistryUniversity of NottinghamUniversity ParkNG7 2RDNottinghamUK
- Department of ChemistryBiochemistry and Pharmaceutical SciencesUniversity of BernFreiestrasse 33012BernSwitzerland
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23
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Li J, Yu S, Wang Y, Yao P, Wu Q, Zhu D. Simultaneous Preparation of (S)-2-Aminobutane and d-Alanine or d-Homoalanine via Biocatalytic Transamination at High Substrate Concentration. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianjiong Li
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
| | - Shanshan Yu
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
| | - Yingang Wang
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Peiyuan Yao
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Qiaqing Wu
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Dunming Zhu
- National Technology Innovation Center of Synthetic Biology, National Engineering Laboratory for Industrial Enzymes, and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 Xi Qi Dao, Tianjin
Airport Economic Area, Tianjin 300308, China
- University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Shijingshan District, Beijing 100049, China
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24
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Gilio AK, Thorpe TW, Turner N, Grogan G. Reductive aminations by imine reductases: from milligrams to tons. Chem Sci 2022; 13:4697-4713. [PMID: 35655886 PMCID: PMC9067572 DOI: 10.1039/d2sc00124a] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/06/2022] [Indexed: 12/22/2022] Open
Abstract
The synthesis of secondary and tertiary amines through the reductive amination of carbonyl compounds is one of the most significant reactions in synthetic chemistry. Asymmetric reductive amination for the formation of chiral amines, which are required for the synthesis of pharmaceuticals and other bioactive molecules, is often achieved through transition metal catalysis, but biocatalytic methods of chiral amine production have also been a focus of interest owing to their selectivity and sustainability. The discovery of asymmetric reductive amination by imine reductase (IRED) and reductive aminase (RedAm) enzymes has served as the starting point for a new industrial approach to the production of chiral amines, leading from laboratory-scale milligram transformations to ton-scale reactions that are now described in the public domain. In this perspective we trace the development of the IRED-catalyzed reductive amination reaction from its discovery to its industrial application on kg to ton scale. In addition to surveying examples of the synthetic chemistry that has been achieved with the enzymes, the contribution of structure and protein engineering to the understanding of IRED-catalyzed reductive amination is described, and the consequent benefits for activity, selectivity and stability in the design of process suitable catalysts. IRED-catalyzed reductive aminations have progressed from mg to ton scale, through advances in enzyme discovery, protein engineering and process biocatalysis.![]()
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Affiliation(s)
- Amelia K. Gilio
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
| | - Thomas W. Thorpe
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M1 7DN, UK
| | - Nicholas Turner
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester, M1 7DN, UK
| | - Gideon Grogan
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
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25
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Stockinger P, Borlinghaus N, Sharma M, Aberle B, Grogan G, Pleiss J, Nestl BM. Inverting the Stereoselectivity of an NADH-Dependent Imine-Reductase Variant. ChemCatChem 2021; 13:5210-5215. [PMID: 35873105 PMCID: PMC9297850 DOI: 10.1002/cctc.202101057] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/12/2021] [Indexed: 12/31/2022]
Abstract
Imine reductases (IREDs) offer biocatalytic routes to chiral amines and have a natural preference for the NADPH cofactor. In previous work, we reported enzyme engineering of the (R)-selective IRED from Myxococcus stipitatus (NADH-IRED-Ms) yielding a NADH-dependent variant with high catalytic efficiency. However, no IRED with NADH specificity and (S)-selectivity in asymmetric reductions has yet been reported. Herein, we applied semi-rational enzyme engineering to switch the selectivity of NADH-IRED-Ms. The quintuple variant A241V/H242Y/N243D/V244Y/A245L showed reverse stereopreference in the reduction of the cyclic imine 2-methylpyrroline compared to the wild-type and afforded the (S)-amine product with >99 % conversion and 91 % enantiomeric excess. We also report the crystal-structures of the NADPH-dependent (R)-IRED-Ms wild-type enzyme and the NADH-dependent NADH-IRED-Ms variant and molecular dynamics (MD) simulations to rationalize the inverted stereoselectivity of the quintuple variant.
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Affiliation(s)
- Peter Stockinger
- Institute of Biochemistry and Technical Biochemistry Department of Technical Biochemistry Universitaet Stuttgart Allmandring 31 70569 Stuttgart Germany
| | - Niels Borlinghaus
- Institute of Biochemistry and Technical Biochemistry Department of Technical Biochemistry Universitaet Stuttgart Allmandring 31 70569 Stuttgart Germany
| | - Mahima Sharma
- York Structural Biology Laboratory Department of Chemistry University of York YO10 5DD York UK
| | - Benjamin Aberle
- Institute of Biochemistry and Technical Biochemistry Department of Technical Biochemistry Universitaet Stuttgart Allmandring 31 70569 Stuttgart Germany
| | - Gideon Grogan
- York Structural Biology Laboratory Department of Chemistry University of York YO10 5DD York UK
| | - Jürgen Pleiss
- Institute of Biochemistry and Technical Biochemistry Department of Technical Biochemistry Universitaet Stuttgart Allmandring 31 70569 Stuttgart Germany
| | - Bettina M Nestl
- Institute of Biochemistry and Technical Biochemistry Department of Technical Biochemistry Universitaet Stuttgart Allmandring 31 70569 Stuttgart Germany
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26
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Wang DH, Chen Q, Yin SN, Ding XW, Zheng YC, Zhang Z, Zhang YH, Chen FF, Xu JH, Zheng GW. Asymmetric Reductive Amination of Structurally Diverse Ketones with Ammonia Using a Spectrum-Extended Amine Dehydrogenase. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dong-Hao Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Qi Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Sai-Nan Yin
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Xu-Wei Ding
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Yu-Cong Zheng
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Zhi Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Yu-Hui Zhang
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Fei-Fei Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
| | - Gao-Wei Zheng
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
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27
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Cárdenas-Fernández M, Sinclair O, Ward JM. Novel transaminases from thermophiles: from discovery to application. Microb Biotechnol 2021; 15:305-317. [PMID: 34713952 PMCID: PMC8719814 DOI: 10.1111/1751-7915.13940] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 01/26/2023] Open
Abstract
Transaminases (TAs) are promising biocatalysts for chiral amine synthesis; however, only few thermophilic TAs have been described to date. In this work, a genome mining approach was taken to seek novel TAs from nine thermophilic microorganisms. TA sequences were identified from their respective genome sequences and their Pfam were predicted confirming that TAs class I–II are the most abundant (50%), followed by class III (26%), V (16%), IV (8%) and VI (1%). The percentage of open reading frames (ORFs) that are TAs ranges from 0.689% in Thermococcus litoralis to 0.424% in Sulfolobus solfataricus. A total of 94 putative TAs were successfully cloned and expressed into E. coli, showing mostly good expression levels when using a chemical chaperone media containing d‐sorbitol. Kinetic and end‐point colorimetric assays with different amino donors–acceptors confirmed TAs activity allowing for initial exploration of the substrate scope. Stereoselective and non‐stereoselective serine‐TAs were selected for the synthesis of hydroxypyruvate (HPA). Low HPA reaction yields were observed with four non‐stereoselective serine‐TAs, whilst two stereoselective serine‐TAs showed significantly higher yields. Coupling serine‐TA reactions to a transketolase to yield l‐erythrulose (Ery) substantially increased serine conversion into HPA. Combining both stereoselective serine‐TAs and transketolase using the inexpensive racemic D/L‐serine led to high Ery yield (82%). Thermal characterization of stereoselective serine‐TAs confirmed they have excellent thermostability up to 60°C and high optimum temperatures.
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Affiliation(s)
- Max Cárdenas-Fernández
- Department of Biochemical Engineering, University College London, Gower St, WC1E 6BT, London, UK.,School of Biosciences, University of Kent, CT2 7NJ, Kent, UK
| | - Oliver Sinclair
- Department of Biochemical Engineering, University College London, Gower St, WC1E 6BT, London, UK
| | - John M Ward
- Department of Biochemical Engineering, University College London, Gower St, WC1E 6BT, London, UK
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Reshi NUD, Saptal VB, Beller M, Bera JK. Recent Progress in Transition-Metal-Catalyzed Asymmetric Reductive Amination. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04208] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Noor U Din Reshi
- Department of Chemistry and Center for Environmental Science, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Vitthal B. Saptal
- Department of Chemistry and Center for Environmental Science, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Matthias Beller
- Leibniz-Institut fr Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Jitendra K. Bera
- Department of Chemistry and Center for Environmental Science, Indian Institute of Technology Kanpur, Kanpur, 208016, India
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29
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Dual-function enzyme catalysis for enantioselective carbon-nitrogen bond formation. Nat Chem 2021; 13:1166-1172. [PMID: 34663919 DOI: 10.1038/s41557-021-00794-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/23/2021] [Indexed: 12/22/2022]
Abstract
Chiral amines can be made by insertion of a carbene into an N-H bond using two-catalyst systems that combine a transition metal-based carbene-transfer catalyst and a chiral proton-transfer catalyst to enforce stereocontrol. Haem proteins can effect carbene N-H insertion, but asymmetric protonation in an active site replete with proton sources is challenging. Here we describe engineered cytochrome P450 enzymes that catalyse carbene N-H insertion to prepare biologically relevant α-amino lactones with high activity and enantioselectivity (up to 32,100 total turnovers, >99% yield and 98% e.e.). These enzymes serve as dual-function catalysts, inducing carbene transfer and promoting the subsequent proton transfer with excellent stereoselectivity in a single active site. Computational studies uncover the detailed mechanism of this new-to-nature enzymatic reaction and explain how active-site residues accelerate this transformation and provide stereocontrol.
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30
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Li F, Liang Y, Wei Y, Zheng Y, Du Y, Yu H. Biochemical and Structural Characterization of an (
R
)‐Selective Transaminase in the Asymmetric Synthesis of Chiral Hydroxy Amines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fulong Li
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Youxiang Liang
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yuwen Wei
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yukun Zheng
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yan Du
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Huimin Yu
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
- Key Laboratory of Industrial Biocatalysis the Ministry of Education Tsinghua University Beijing 100084 People's Republic of China
- Center for Synthetic and Systems Biology Tsinghua University Beijing 100084 People's Republic of China
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31
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Uma Mahesh VNM, Chadha A. Imine reduction by an Ornithine cyclodeaminase/μ-crystallin homolog purified from Candida parapsilosis ATCC 7330. ACTA ACUST UNITED AC 2021; 31:e00664. [PMID: 34557391 PMCID: PMC8446579 DOI: 10.1016/j.btre.2021.e00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/19/2021] [Accepted: 08/02/2021] [Indexed: 11/26/2022]
Abstract
Novel imine reductase from yeast Candida parapsilosis purified and characterized. CpIM1 belongs to unexplored Ornithine cyclodeaminase/Mu crystallin protein family CpIM1 catalyzed stereospecific alkylamination of α-ketoacids/ketoesters. CpIM1 also reduced cyclic and aryl imines. First report on enzymatic alkylamination of α-ketoesters and reduction of arylimines.
We report a stereospecific imine reductase from Candida parapsilosis ATCC 7330 (CpIM1), a versatile biocatalyst and a rich source of highly stereospecific oxidoreductases. The recombinant gene was overexpressed in Escherichia coli and the protein CpIM1 was purified to homogeneity. This protein belongs to the Ornithine cyclodeaminase/ μ-crystallin (OCD-Mu) family of proteins which has only a few characterized members. CpIM1 catalyzed the alkylamination of α-keto acids/esters producing exclusively (S)-N-alkyl amino acids/esters e.g. N-methyl-l-alanine with > 90% conversion and > 99% enantiomeric excess (ee). The enzyme showed the highest activity for the alkylamination of pyruvate and methylamine leading to N-methyl-l-alanine with an apparent KM of 15.04 ± 2.8 mM and Vmax of 13.75 ± 1.07 μmol/min/mg. CpIM1 also catalyzed (i) the reduction of imines e.g. 2-methyl-1-pyrroline to (S)-2-methylpyrrolidine with ∼30% conversion and 75% ee and (ii) the dehydrogenation of cyclic amino acids e.g. l-Proline (as monitered by reduction of cofactor NADP+ spectrophotometrically).
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Affiliation(s)
- V N M Uma Mahesh
- Laboratory of Bioorganic Chemistry, Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Anju Chadha
- Laboratory of Bioorganic Chemistry, Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600 036, India.,National Center for Catalysis Research, Indian Institute of Technology Madras, Chennai 600 036, India
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32
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Duan S, Widlicka DW, Burns MP, Kumar R, Hotham I, Desrosiers JN, Bowles P, Jones KN, Nicholson LD, Buetti-Weekly MT, Han L, Steflik J, Hansen E, Hayward CM, Strohmeyer H, Monfette S, Sutton SC, Morris C. Application of Biocatalytic Reductive Amination for the Synthesis of a Key Intermediate to a CDK 2/4/6 Inhibitor. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00255] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shengquan Duan
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Daniel W. Widlicka
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Michael P. Burns
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Rajesh Kumar
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Ian Hotham
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Jean-Nicolas Desrosiers
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Paul Bowles
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Kris N. Jones
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Lindsay D. Nicholson
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Michele T. Buetti-Weekly
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Lu Han
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Jeremy Steflik
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Eric Hansen
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Cheryl M. Hayward
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Holly Strohmeyer
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Sébastien Monfette
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Scott C. Sutton
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
| | - Christopher Morris
- Chemical and Analytical Research and Development, Pfizer Worldwide Research and Development, Groton Laboratories, Groton, Connecticut 06340, United States
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33
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Sirota FL, Maurer-Stroh S, Li Z, Eisenhaber F, Eisenhaber B. Functional Classification of Super-Large Families of Enzymes Based on Substrate Binding Pocket Residues for Biocatalysis and Enzyme Engineering Applications. Front Bioeng Biotechnol 2021; 9:701120. [PMID: 34409021 PMCID: PMC8366029 DOI: 10.3389/fbioe.2021.701120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Large enzyme families such as the groups of zinc-dependent alcohol dehydrogenases (ADHs), long chain alcohol oxidases (AOxs) or amine dehydrogenases (AmDHs) with, sometimes, more than one million sequences in the non-redundant protein database and hundreds of experimentally characterized enzymes are excellent cases for protein engineering efforts aimed at refining and modifying substrate specificity. Yet, the backside of this wealth of information is that it becomes technically difficult to rationally select optimal sequence targets as well as sequence positions for mutagenesis studies. In all three cases, we approach the problem by starting with a group of experimentally well studied family members (including those with available 3D structures) and creating a structure-guided multiple sequence alignment and a modified phylogenetic tree (aka binding site tree) based just on a selection of potential substrate binding residue positions derived from experimental information (not from the full-length sequence alignment). Hereupon, the remaining, mostly uncharacterized enzyme sequences can be mapped; as a trend, sequence grouping in the tree branches follows substrate specificity. We show that this information can be used in the target selection for protein engineering work to narrow down to single suitable sequences and just a few relevant candidate positions for directed evolution towards activity for desired organic compound substrates. We also demonstrate how to find the closest thermophile example in the dataset if the engineering is aimed at achieving most robust enzymes.
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Affiliation(s)
- Fernanda L Sirota
- Bioinformatics Institute (BII), Agency for Science Technology and Research (ASTAR), Singapore, Singapore
| | - Sebastian Maurer-Stroh
- Bioinformatics Institute (BII), Agency for Science Technology and Research (ASTAR), Singapore, Singapore.,Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Zhi Li
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
| | - Frank Eisenhaber
- Bioinformatics Institute (BII), Agency for Science Technology and Research (ASTAR), Singapore, Singapore.,Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Birgit Eisenhaber
- Bioinformatics Institute (BII), Agency for Science Technology and Research (ASTAR), Singapore, Singapore.,Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
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34
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Xiang C, Wu S, Bornscheuer UT. Directed evolution of an amine transaminase for the synthesis of an Apremilast intermediate via kinetic resolution. Bioorg Med Chem 2021; 43:116271. [PMID: 34171757 DOI: 10.1016/j.bmc.2021.116271] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/30/2021] [Accepted: 06/04/2021] [Indexed: 01/01/2023]
Abstract
Apremilast is an important active pharmaceutical ingredient that relies on a resolution to produce the key chiral amine intermediate. To provide a new catalytic and enzymatic process for Apremilast, we performed the directed evolution of the amine transaminase fromVibriofluvialis. Six rounds of evolution resulted in the VF-8M-E variant with > 400-fold increase specific activity over the wildtype enzyme. A homology model of VF-8M-E was built and a molecular docking study was performed to explain the increase in activity. The purified VF-8M-E was successfully applied to produce the key chiral amine intermediate in enantiopure form and 49% conversion via a kinetic resolution, representing a new enzymatic access towards Apremilast.
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Affiliation(s)
- Chao Xiang
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Shuke Wu
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, 17487 Greifswald, Germany; State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Wuhan 430070, PR China
| | - Uwe T Bornscheuer
- Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, 17487 Greifswald, Germany.
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35
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Wang C, Tang K, Dai Y, Jia H, Li Y, Gao Z, Wu B. Identification, Characterization, and Site-Specific Mutagenesis of a Thermostable ω-Transaminase from Chloroflexi bacterium. ACS OMEGA 2021; 6:17058-17070. [PMID: 34250363 PMCID: PMC8264935 DOI: 10.1021/acsomega.1c02164] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
In the present study, we have identified an ω-transaminase (ω-TA) from Chloroflexi bacterium from the genome database by using two ω-TA sequences (ATA117 Arrmut11 from Arthrobacter sp. KNK168 and amine transaminase from Aspergillus terreus NIH2624) as templates in a BLASTP search and motif sequence alignment. The protein sequence of the ω-TA from C. bacterium (CbTA) shows 38% sequence identity to that of ATA117 Arrmut11. The gene sequence of CbTA was inserted into pRSF-Duet1 and functionally expressed in Escherichia coli BL21(DE3). The results showed that the recombinant CbTA has a specific activity of 1.19 U/mg for (R)-α-methylbenzylamine [(R)-MBA] at pH 8.5 and 45 °C. The substrate acceptability test showed that CbTA has significant reactivity to aromatic amino donors and amino receptors. More importantly, CbTA also exhibited good affinity toward some cyclic substrates. The homology model of CbTA was built by Discovery Studio, and docking was performed to describe the relative activity toward some substrates. CbTA evolved by site-specific mutagenesis and found that the Q192G mutant increased the activity to (R)-MBA by around 9.8-fold. The Q192G mutant was then used to convert two cyclic ketones, N-Boc-3-pyrrolidinone and N-Boc-3-piperidone, and both the conversions were obviously improved compared to that of the parental CbTA.
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36
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Bujacz A, Rum J, Rutkiewicz M, Pietrzyk-Brzezinska AJ, Bujacz G. Structural Evidence of Active Site Adaptability towards Different Sized Substrates of Aromatic Amino Acid Aminotransferase from Psychrobacter Sp. B6. MATERIALS 2021; 14:ma14123351. [PMID: 34204354 PMCID: PMC8235216 DOI: 10.3390/ma14123351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/27/2021] [Accepted: 06/09/2021] [Indexed: 01/07/2023]
Abstract
Aromatic amino acid aminotransferases present a special potential in the production of drugs and synthons, thanks to their ability to accommodate a wider range of substrates in their active site, in contrast to aliphatic amino acid aminotransferases. The mechanism of active site adjustment toward substrates of psychrophilic aromatic amino acid aminotransferase (PsyArAT) from Psychrobacter sp. B6 is discussed based on crystal structures of complexes with four hydroxy-analogs of substrates: phenylalanine, tyrosine, tryptophan and aspartic acid. These competitive inhibitors are bound in the active center of PsyArAT but do not undergo transamination reaction, which makes them an outstanding tool for examination of the enzyme catalytic center. The use of hydroxy-acids enabled insight into substrate binding by native PsyArAT, without mutating the catalytic lysine and modifying cofactor interactions. Thus, the binding mode of substrates and the resulting analysis of the volume of the catalytic site is close to a native condition. Observation of these inhibitors' binding allows for explanation of the enzyme's adaptability to process various sizes of substrates and to gain knowledge about its potential biotechnological application. Depending on the character and size of the used inhibitors, the enzyme crystallized in different space groups and showed conformational changes of the active site upon ligand binding.
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Affiliation(s)
- Anna Bujacz
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (J.R.); (A.J.P.-B.); (G.B.)
- Correspondence:
| | - Jedrzej Rum
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (J.R.); (A.J.P.-B.); (G.B.)
| | - Maria Rutkiewicz
- Macromolecular Structure and Interaction, Max Delbrück Center for Molecular Medicine, Robert-Rössle-Straße 10, 13125 Berlin, Germany;
| | - Agnieszka J. Pietrzyk-Brzezinska
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (J.R.); (A.J.P.-B.); (G.B.)
| | - Grzegorz Bujacz
- Institute of Molecular and Industrial Biotechnology, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland; (J.R.); (A.J.P.-B.); (G.B.)
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37
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Han B, He XH, Liu YQ, He G, Peng C, Li JL. Asymmetric organocatalysis: an enabling technology for medicinal chemistry. Chem Soc Rev 2021; 50:1522-1586. [PMID: 33496291 DOI: 10.1039/d0cs00196a] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The efficacy and synthetic versatility of asymmetric organocatalysis have contributed enormously to the field of organic synthesis since the early 2000s. As asymmetric organocatalytic methods mature, they have extended beyond the academia and undergone scale-up for the production of chiral drugs, natural products, and enantiomerically enriched bioactive molecules. This review provides a comprehensive overview of the applications of asymmetric organocatalysis in medicinal chemistry. A general picture of asymmetric organocatalytic strategies in medicinal chemistry is firstly presented, and the specific applications of these strategies in pharmaceutical synthesis are systematically described, with a focus on the preparation of antiviral, anticancer, neuroprotective, cardiovascular, antibacterial, and antiparasitic agents, as well as several miscellaneous bioactive agents. The review concludes with a discussion of the challenges, limitations and future prospects for organocatalytic asymmetric synthesis of medicinally valuable compounds.
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Affiliation(s)
- Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Centre, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. and Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China.
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38
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Corrado ML, Knaus T, Mutti FG. High Regio- and Stereoselective Multi-enzymatic Synthesis of All Phenylpropanolamine Stereoisomers from β-Methylstyrene. Chembiochem 2021; 22:2345-2350. [PMID: 33880862 PMCID: PMC8359840 DOI: 10.1002/cbic.202100123] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/20/2021] [Indexed: 12/16/2022]
Abstract
We present a one‐pot cascade for the synthesis of phenylpropanolamines (PPAs) in high optical purities (er and dr up to >99.5 %) and analytical yields (up to 95 %) by using 1‐phenylpropane‐1,2‐diols as key intermediates. This bioamination entails the combination of an alcohol dehydrogenase (ADH), an ω‐transaminase (ωTA) and an alanine dehydrogenase to create a redox‐neutral network, which harnesses the exquisite and complementary regio‐ and stereo‐selectivities of the selected ADHs and ωTAs. The requisite 1‐phenylpropane‐1,2‐diol intermediates were obtained from trans‐ or cis‐β‐methylstyrene by combining a styrene monooxygenase with epoxide hydrolases. Furthermore, in selected cases, the envisioned cascade enabled to obtain the structural isomer (1S,2R)‐1‐amino‐1‐phenylpropan‐2‐ol in high optical purity (er and dr >99.5 %). This is the first report on an enzymatic method that enables to obtain all of the four possible PPA stereoisomers in great enantio‐ and diastereo‐selectivity.
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Affiliation(s)
- Maria L Corrado
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Francesco G Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
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39
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Production of l-Theanine by Escherichia coli in the Absence of Supplemental Ethylamine. Appl Environ Microbiol 2021; 87:AEM.00031-21. [PMID: 33741612 DOI: 10.1128/aem.00031-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/09/2021] [Indexed: 11/20/2022] Open
Abstract
l-Theanine is a nonproteinogenic amino acid present almost exclusively in tea plants and is beneficial for human health. For industrial production, l-theanine is enzymatically or chemically synthesized from glutamine/glutamate (or a glutamine/glutamate derivative) and ethylamine. Ethylamine is extremely flammable and toxic, which complicates and increases the cost of operational procedures. To solve these problems, we developed an artificial biosynthetic pathway to produce l-theanine in the absence of supplemental ethylamine. For this purpose, we identified and selected a novel transaminase (NCBI:protein accession number AAN70747) from Pseudomonas putida KT2440, which catalyzes the transamination of acetaldehyde to produce ethylamine, as well as γ-glutamylmethylamide synthetase (NCBI:protein accession number AAY37316) from Pseudomonas syringae pv. syringae B728a, which catalyzes the condensation of l-glutamate and ethylamine to produce l-theanine. Expressing these genes in Escherichia coli W3110S3GK and enhancing the production capacity of acetaldehyde and l-alanine achieved successful production of l-theanine without ethylamine supplementation. Furthermore, the deletion of ggt, which encodes γ-glutamyltranspeptidase (EC 2.3.2.2), achieved large-scale production of l-theanine by attenuating its decomposition. We show that an alanine decarboxylase-utilizing pathway represents a promising route for the fermentative production of l-theanine. Our study reports efficient methods to produce l-theanine in the absence of supplemental ethylamine.IMPORTANCE l-Theanine is widely used in food additives and dietary supplements. Industrial production of l-theanine uses the toxic and highly flammable precursor ethylamine, raising production costs. In this study, we used Escherichia coli to engineer two biosynthetic pathways that produce l-theanine from glucose and ammonia in the absence of supplemental ethylamine. This study establishes a foundation for safely and economically producing l-theanine.
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40
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Hollmann F, Opperman DJ, Paul CE. Biocatalytic Reduction Reactions from a Chemist's Perspective. Angew Chem Int Ed Engl 2021; 60:5644-5665. [PMID: 32330347 PMCID: PMC7983917 DOI: 10.1002/anie.202001876] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 11/09/2022]
Abstract
Reductions play a key role in organic synthesis, producing chiral products with new functionalities. Enzymes can catalyse such reactions with exquisite stereo-, regio- and chemoselectivity, leading the way to alternative shorter classical synthetic routes towards not only high-added-value compounds but also bulk chemicals. In this review we describe the synthetic state-of-the-art and potential of enzymes that catalyse reductions, ranging from carbonyl, enone and aromatic reductions to reductive aminations.
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Affiliation(s)
- Frank Hollmann
- Department of BiotechnologyDelft University of TechnologyVan der Maasweg 92629 HZDelftThe Netherlands
- Department of BiotechnologyUniversity of the Free State205 Nelson Mandela DriveBloemfontein9300South Africa
| | - Diederik J. Opperman
- Department of BiotechnologyUniversity of the Free State205 Nelson Mandela DriveBloemfontein9300South Africa
| | - Caroline E. Paul
- Department of BiotechnologyDelft University of TechnologyVan der Maasweg 92629 HZDelftThe Netherlands
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Tseliou V, Schilder D, Masman MF, Knaus T, Mutti FG. Generation of Oxidoreductases with Dual Alcohol Dehydrogenase and Amine Dehydrogenase Activity. Chemistry 2021; 27:3315-3325. [PMID: 33073866 PMCID: PMC7898336 DOI: 10.1002/chem.202003140] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/17/2020] [Indexed: 11/12/2022]
Abstract
The l-lysine-ϵ-dehydrogenase (LysEDH) from Geobacillus stearothermophilus naturally catalyzes the oxidative deamination of the ϵ-amino group of l-lysine. We previously engineered this enzyme to create amine dehydrogenase (AmDH) variants that possess a new hydrophobic cavity in their active site such that aromatic ketones can bind and be converted into α-chiral amines with excellent enantioselectivity. We also recently observed that LysEDH was capable of reducing aromatic aldehydes into primary alcohols. Herein, we harnessed the promiscuous alcohol dehydrogenase (ADH) activity of LysEDH to create new variants that exhibited enhanced catalytic activity for the reduction of substituted benzaldehydes and arylaliphatic aldehydes to primary alcohols. Notably, these novel engineered dehydrogenases also catalyzed the reductive amination of a variety of aldehydes and ketones with excellent enantioselectivity, thus exhibiting a dual AmDH/ADH activity. We envisioned that the catalytic bi-functionality of these enzymes could be applied for the direct conversion of alcohols into amines. As a proof-of-principle, we performed an unprecedented one-pot "hydrogen-borrowing" cascade to convert benzyl alcohol to benzylamine using a single enzyme. Conducting the same biocatalytic cascade in the presence of cofactor recycling enzymes (i.e., NADH-oxidase and formate dehydrogenase) increased the reaction yields. In summary, this work provides the first examples of enzymes showing "alcohol aminase" activity.
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Affiliation(s)
- Vasilis Tseliou
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Don Schilder
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Marcelo F. Masman
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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Wu S, Snajdrova R, Moore JC, Baldenius K, Bornscheuer UT. Biocatalysis: Enzymatic Synthesis for Industrial Applications. Angew Chem Int Ed Engl 2021; 60:88-119. [PMID: 32558088 PMCID: PMC7818486 DOI: 10.1002/anie.202006648] [Citation(s) in RCA: 499] [Impact Index Per Article: 166.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Indexed: 12/12/2022]
Abstract
Biocatalysis has found numerous applications in various fields as an alternative to chemical catalysis. The use of enzymes in organic synthesis, especially to make chiral compounds for pharmaceuticals as well for the flavors and fragrance industry, are the most prominent examples. In addition, biocatalysts are used on a large scale to make specialty and even bulk chemicals. This review intends to give illustrative examples in this field with a special focus on scalable chemical production using enzymes. It also discusses the opportunities and limitations of enzymatic syntheses using distinct examples and provides an outlook on emerging enzyme classes.
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Affiliation(s)
- Shuke Wu
- Institute of BiochemistryDept. of Biotechnology & Enzyme CatalysisGreifswald UniversityFelix-Hausdorff-Strasse 417487GreifswaldGermany
| | - Radka Snajdrova
- Novartis Institutes for BioMedical ResearchGlobal Discovery Chemistry4056BaselSwitzerland
| | - Jeffrey C. Moore
- Process Research and DevelopmentMerck & Co., Inc.126 E. Lincoln AveRahwayNJ07065USA
| | - Kai Baldenius
- Baldenius Biotech ConsultingHafenstr. 3168159MannheimGermany
| | - Uwe T. Bornscheuer
- Institute of BiochemistryDept. of Biotechnology & Enzyme CatalysisGreifswald UniversityFelix-Hausdorff-Strasse 417487GreifswaldGermany
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Gilbert SH, Tin S, Fuentes JA, Fanjul T, Clarke ML. Rhodium catalysts derived from a fluorinated phanephos ligand are highly active catalysts for direct asymmetric reductive amination of secondary amines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Stockinger P, Schelle L, Schober B, Buchholz PCF, Pleiss J, Nestl BM. Engineering of Thermostable β-Hydroxyacid Dehydrogenase for the Asymmetric Reduction of Imines. Chembiochem 2020; 21:3511-3514. [PMID: 32939899 PMCID: PMC7756219 DOI: 10.1002/cbic.202000526] [Citation(s) in RCA: 3] [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: 07/31/2020] [Indexed: 01/08/2023]
Abstract
The β-hydroxyacid dehydrogenase from Thermocrinus albus (Ta-βHAD), which catalyzes the NADP+ -dependent oxidation of β-hydroxyacids, was engineered to accept imines as substrates. The catalytic activity of the proton-donor variant K189D was further increased by the introduction of two nonpolar flanking residues (N192 L, N193 L). Engineering the putative alternative proton donor (D258S) and the gate-keeping residue (F250 A) led to a switched substrate specificity as compared to the single and triple variants. The two most active Ta-βHAD variants were applied to biocatalytic asymmetric reductions of imines at elevated temperatures and enabled enhanced product formation at a reaction temperature of 50 °C.
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Affiliation(s)
- Peter Stockinger
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
| | - Luca Schelle
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
| | - Benedikt Schober
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
| | - Patrick C. F. Buchholz
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
| | - Jürgen Pleiss
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
| | - Bettina M. Nestl
- Institute of Biochemistry and Technical BiochemistryDepartment of Technical BiochemistryUniversity of StuttgartAllmandring 3170569StuttgartGermany
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45
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Structural and Functional Analysis of the Only Two Pyridoxal 5′-Phosphate-Dependent Fold Type IV Transaminases in Bacillus altitudinis W3. Catalysts 2020. [DOI: 10.3390/catal10111308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Aminotransferases are employed as industrial biocatalysts to produce chiral amines with high enantioselectivity and yield. BpTA-1 and BpTA-2 are the only two pyridoxal 5′-phosphate-dependent fold type IV transaminase enzymes in Bacillus altitudinis W3. Herein, we compared the structures and biochemical characteristics of BpTA-1 and BpTA-2 using bioinformatic analysis, circular dichroism spectroscopy, atomic force microscopy and other approaches. BpTA-1 and BpTA-2 are similar overall; both form homodimers and utilize a catalytic lysine. However, there are distinct differences in the substrate cofactor-binding pocket, molecular weight and the proportion of the secondary structure. Both enzymes have the same stereoselectivity but different enzymatic properties. BpTA-2 is more active under partial alkaline and ambient temperature conditions and BpTA-1 is more sensitive to pH and temperature. BpTA-2 as novel enzyme not only fills the building blocks of transaminase but also has broader industrial application potential for (R)-α-phenethylamines than BpTA-1. Structure-function relationships were explored to assess similarities and differences. The findings lay the foundation for modifying these enzymes via protein engineering to enhance their industrial application potential.
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Hollmann F, Opperman DJ, Paul CE. Biokatalytische Reduktionen aus der Sicht eines Chemikers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001876] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Frank Hollmann
- Department of Biotechnology Delft University of Technology Van der Maasweg 9 2629 HZ Delft Niederlande
- Department of Biotechnology University of the Free State 205 Nelson Mandela Drive Bloemfontein 9300 Südafrika
| | - Diederik J. Opperman
- Department of Biotechnology University of the Free State 205 Nelson Mandela Drive Bloemfontein 9300 Südafrika
| | - Caroline E. Paul
- Department of Biotechnology Delft University of Technology Van der Maasweg 9 2629 HZ Delft Niederlande
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Wu S, Snajdrova R, Moore JC, Baldenius K, Bornscheuer UT. Biokatalyse: Enzymatische Synthese für industrielle Anwendungen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006648] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shuke Wu
- Institut für Biochemie Abt. Biotechnologie & Enzymkatalyse Universität Greifswald Felix-Hausdorff-Straße 4 17487 Greifswald Deutschland
| | - Radka Snajdrova
- Novartis Institutes for BioMedical Research Global Discovery Chemistry 4056 Basel Schweiz
| | - Jeffrey C. Moore
- Process Research and Development Merck & Co., Inc. 126 E. Lincoln Ave Rahway NJ 07065 USA
| | - Kai Baldenius
- Baldenius Biotech Consulting Hafenstraße 31 68159 Mannheim Deutschland
| | - Uwe T. Bornscheuer
- Institut für Biochemie Abt. Biotechnologie & Enzymkatalyse Universität Greifswald Felix-Hausdorff-Straße 4 17487 Greifswald Deutschland
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Zhang C, Lu M, Lin L, Huang Z, Zhang R, Wu X, Chen Y. Riboflavin Is Directly Involved in N-Dealkylation Catalyzed by Bacterial Cytochrome P450 Monooxygenases. Chembiochem 2020; 21:2297-2305. [PMID: 32243060 DOI: 10.1002/cbic.202000071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/01/2020] [Indexed: 11/09/2022]
Abstract
Like a vast number of enzymes in nature, bacterial cytochrome P450 monooxygenases require an activated form of flavin as a cofactor for catalytic activity. Riboflavin is the precursor of FAD and FMN that serves as indispensable cofactor for flavoenzymes. In contrast to previous notions, herein we describe the identification of an electron-transfer process that is directly mediated by riboflavin for N-dealkylation by bacterial P450 monooxygenases. The electron relay from NADPH to riboflavin and then via activated oxygen to heme was proposed based on a combination of X-ray crystallography, molecular modeling and molecular dynamics simulation, site-directed mutagenesis and biochemical analysis of representative bacterial P450 monooxygenases. This study provides new insights into the electron transfer mechanism in bacterial P450 enzyme catalysis and likely in yeasts, fungi, plants and mammals.
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Affiliation(s)
- Chengchang Zhang
- Laboratory of Chemical Biology and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu Province, 211198, P. R. China
| | - Meiling Lu
- Laboratory of Chemical Biology and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu Province, 211198, P. R. China
| | - Lin Lin
- National Center for Protein Science and Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, 333 Haike Road, Shanghai, 201210, P. R. China
| | - Zhangjian Huang
- Laboratory of Chemical Biology and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu Province, 211198, P. R. China
| | - Rongguang Zhang
- National Center for Protein Science and Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, 333 Haike Road, Shanghai, 201210, P. R. China
| | - Xuri Wu
- Laboratory of Chemical Biology and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu Province, 211198, P. R. China
| | - Yijun Chen
- Laboratory of Chemical Biology and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, Jiangsu Province, 211198, P. R. China
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Li R, Chen Y, Du K, Feng W. Peptide Bond Formation Between the Hetrosubunits of ω-Transaminase, Alanine Dehydrogenase, and Formate Dehydrogenase Through Subunit Splicing Promoted by Heterodimerization of Leucine Zipper Motifs. Front Bioeng Biotechnol 2020; 8:686. [PMID: 32695764 PMCID: PMC7338344 DOI: 10.3389/fbioe.2020.00686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/02/2020] [Indexed: 11/13/2022] Open
Abstract
For the multimeric enzymes R-ω-transaminase (RTA), alanine dehydrogenase (AlaDH), and formate dehydrogenase (FDH), peptide bond formation between the hetrosubunits has been achieved by the intein-mediated in vivo subunit splicing. The subunit ligation is triggered by the heterodimerization of an arginine rich leucine zipper motif with a glutamic acid rich leucine zipper motif. The one-by-one ligation of hetrosubunits constructs the pairing enzymes RTA&AlaDH and AlaDH&FDH. The ligation modes were analyzed based on blue native polyacrylamide gel electrophoresis (BN-PAGE). The spectra of circular dichroism (CD), fluorescence, and two-dimensional FTIR provide information on the secondary structures and stability of the pairing enzymes. The enzyme-substrate interaction was analyzed based on microscale thermophoresis analysis. In contrast to the mixed three enzymes RTA + AlaDH + FDH, the ligated enzymes RTA&AlaDH + AlaDH&FDH exhibited a much larger substrate affinity, higher stability, and significantly enhanced activity.
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Affiliation(s)
- Rong Li
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Yao Chen
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Kun Du
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Wei Feng
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
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Meyer LE, Brundiek H, von Langermann J. Integration of ion exchange resin materials for a downstream-processing approach of an imine reductase-catalyzed reaction. Biotechnol Prog 2020; 36:e3024. [PMID: 32410373 DOI: 10.1002/btpr.3024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/21/2020] [Accepted: 05/09/2020] [Indexed: 12/31/2022]
Abstract
In this study, an ion exchange resin-based downstream-processing concept for imine reductase (IRED)-catalyzed reactions was investigated. As a model reaction, 2-methylpyrroline was converted to its corresponding product (S)-2-methylpyrrolidine with >99% of conversion by the (S)-selective IRED from Paenibacillus elgii B69. Under optimized reaction conditions full conversion was achieved using a substrate concentration of 150 and 500 mmol/L of d-glucose. Seven commercially available cation- and anion-exchange resins were studied with respect to their ability to recover the product from the reaction solution. Without any pretreatment, cation-exchange resins Amberlite IR-120(H), IRN-150, Dowex Monosphere 650C, and Dowex Marathon MSC showed high recovery capacities (up to >90%). A 150-ml preparative scale reaction was performed yielding ~1 g hydrochloride salt product with >99% purity. Any further purification steps, for example, by column chromatography or recrystallization, were not required.
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Affiliation(s)
- Lars-Erik Meyer
- Biocatalytic Synthesis Group, Institute of Chemistry, University of Rostock, Rostock, Germany
| | | | - Jan von Langermann
- Biocatalytic Synthesis Group, Institute of Chemistry, University of Rostock, Rostock, Germany
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