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Zdun B, Reiter T, Kroutil W, Borowiecki P. Chemoenzymatic Synthesis of Tenofovir. J Org Chem 2023; 88:11045-11055. [PMID: 37467462 PMCID: PMC10407936 DOI: 10.1021/acs.joc.3c01005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Indexed: 07/21/2023]
Abstract
We report on novel chemoenzymatic routes toward tenofovir using low-cost starting materials and commercial or homemade enzyme preparations as biocatalysts. The biocatalytic key step was accomplished either via stereoselective reduction using an alcohol dehydrogenase or via kinetic resolution using a lipase. By employing a suspension of immobilized lipase from Burkholderia cepacia (Amano PS-IM) in a mixture of vinyl acetate and toluene, the desired (R)-ester (99% ee) was obtained on a 500 mg scale (60 mM) in 47% yield. Alternatively, stereoselective reduction of 1-(6-chloro-9H-purin-9-yl) propan-2-one (84 mg, 100 mM) catalyzed by lyophilized E. coli cells harboring recombinant alcohol dehydrogenase (ADH) from Lactobacillus kefir (E. coli/Lk-ADH Prince) allowed one to reach quantitative conversion, 86% yield and excellent optical purity (>99% ee) of the corresponding (R)-alcohol. The key (R)-intermediate was transformed into tenofovir through "one-pot" aminolysis-hydrolysis of (R)-acetate in NH3-saturated methanol, alkylation of the resulting (R)-alcohol with tosylated diethyl(hydroxymethyl) phosphonate, and bromotrimethylsilane (TMSBr)-mediated cleavage of the formed phosphonate ester into the free phosphonic acid. The elaborated enzymatic strategy could be applicable in the asymmetric synthesis of tenofovir prodrug derivatives, including 5'-disoproxil fumarate (TDF, Viread) and 5'-alafenamide (TAF, Vemlidy). The molecular basis of the stereoselectivity of the employed ADHs was revealed by molecular docking studies.
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Affiliation(s)
- Beata Zdun
- Laboratory
of Biocatalysis and Biotransformation, Department of Drugs Technology
and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
| | - Tamara Reiter
- Institute
of Chemistry, University of Graz, NAWI Graz,
BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Institute
of Chemistry, University of Graz, NAWI Graz,
BioTechMed Graz, Field of Excellence BioHealth, Heinrichstrasse 28, 8010 Graz, Austria
| | - Paweł Borowiecki
- Laboratory
of Biocatalysis and Biotransformation, Department of Drugs Technology
and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
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Sarieddine A, Hadjiefstathiou C, Majira A, Pion F, Ducrot PH. Biocatalytic selective acylation of technical lignins: a new route for the design of new biobased additives for industrial formulations. Front Chem 2023; 11:1239479. [PMID: 37547909 PMCID: PMC10400768 DOI: 10.3389/fchem.2023.1239479] [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: 06/13/2023] [Accepted: 07/12/2023] [Indexed: 08/08/2023] Open
Abstract
In this article, we describe a proof of concept of the potential use of a biocatalytic process for the functionalization of technical soda lignins from wheat straw through the selective acylation of primary hydroxy groups of lignin oligomers by acetate or hexanoate, thus preserving their free, unreacted phenols. The selectivity and efficiency of the method, although they depend on the structural complexity of the starting material, have been proven on model compounds. Applied to technical lignins, the acylation yield is only moderate, due to structural and chemical features induced by the industrial mode of preparation of the lignins rather than to the lack of efficiency of the method. However, most of the physicochemical properties of the lignins, including their antioxidant potential, are preserved, advocating the potential use of these modified lignins for industrial applications.
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Affiliation(s)
- Aya Sarieddine
- Université Paris-Saclay, Institut national de la recherche agronomique, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
- FARE Laboratory, Institut national de la recherche agronomique, Université de Reims Champagne Ardenne, Reims, France
| | - Caroline Hadjiefstathiou
- Université Paris-Saclay, Institut national de la recherche agronomique, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
- URCOM Laboratory, Université Le Havre Normandie, Le Havre, France
| | - Amel Majira
- Université Paris-Saclay, Institut national de la recherche agronomique, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Florian Pion
- Université Paris-Saclay, Institut national de la recherche agronomique, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Paul-Henri Ducrot
- Université Paris-Saclay, Institut national de la recherche agronomique, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
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Borowiecki P. Chemoenzymatic Synthesis of Optically Active Ethereal Analog of iso-Moramide-A Novel Potentially Powerful Analgesic †. Int J Mol Sci 2022; 23:ijms231911803. [PMID: 36233106 PMCID: PMC9569485 DOI: 10.3390/ijms231911803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
To develop potent and safer analgesics, we designed and synthesized a novel enantiomerically enriched ethereal analog of (R)-iso-moramide, namely 2-[(2R)-2-(morpholin-4-yl)propoxy]-2,2-diphenyl-1-(pyrrolidin-1-yl)ethan-1-one. The titled active agent can potentially serve as a powerful synthetic opiate with an improved affinity and selectivity toward opioid receptors (ORs). This hypothesis was postulated based on docking studies regarding the respective complexes between the designed ligand and µ-OR, δ-OR, and κ-OR. The key step of the elaborated asymmetric synthesis of novel analog involves lipase-catalyzed kinetic resolution of racemic 1-(morpholin-4-yl)propan-2-ol, which was accomplished on a 10 g scale via an enantioselective transesterification employing vinyl acetate as an irreversible acyl donor in tert-butyl methyl ether (MTBE) as the co-solvent. Next, the obtained homochiral (S)-(+)-morpholino-alcohol (>99% ee) was functionalized into corresponding chloro-derivative using thionyl chloride (SOCl2) or the Appel reaction conditions. Further transformation with N-diphenylacetyl-1-pyrrolidine under phase-transfer catalysis (PTC) conditions using O2-saturated DMSO/NaOH mixture as an oxidant furnished the desired levorotatory isomer of the title product isolated in 26% total yield after three steps, and with 89% ee. The absolute configuration of the key-intermediate of (R)-(−)-iso-moramide was determined using a modified form of Mosher’s methodology. The preparation of the optically active dextrorotatory isomer of the titled product (87% ee) was carried out essentially by the same route, utilizing (R)-(−)-1-(morpholin-4-yl)propan-2-ol (98% ee) as a key intermediate. The spectroscopic characterization of the ethereal analog of iso-moramide and the enantioselective retention relationship of its enantiomers using HPLC on the cellulose-based chiral stationary phase were performed. Moreover, as a proof-of-principle, single-crystal X-ray diffraction (XRD) analysis of the synthesized 2-[(2R)-2-(morpholin-4-yl)propoxy]-2,2-diphenyl-1-(pyrrolidin-1-yl)ethan-1-one is reported.
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Affiliation(s)
- Paweł Borowiecki
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Koszykowa St. 75, 00-662 Warsaw, Poland
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Microbial Lipases and Their Potential in the Production of Pharmaceutical Building Blocks. Int J Mol Sci 2022; 23:ijms23179933. [PMID: 36077332 PMCID: PMC9456414 DOI: 10.3390/ijms23179933] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Processes involving lipases in obtaining active pharmaceutical ingredients (APIs) are crucial to increase the sustainability of the industry. Despite their lower production cost, microbial lipases are striking for their versatile catalyzing reactions beyond their physiological role. In the context of taking advantage of microbial lipases in reactions for the synthesis of API building blocks, this review focuses on: (i) the structural origins of the catalytic properties of microbial lipases, including the results of techniques such as single particle monitoring (SPT) and the description of its selectivity beyond the Kazlauskas rule as the “Mirror-Image Packing” or the “Key Region(s) rule influencing enantioselectivity” (KRIE); (ii) immobilization methods given the conferred operative advantages in industrial applications and their modulating capacity of lipase properties; and (iii) a comprehensive description of microbial lipases use as a conventional or promiscuous catalyst in key reactions in the organic synthesis (Knoevenagel condensation, Morita–Baylis–Hillman (MBH) reactions, Markovnikov additions, Baeyer–Villiger oxidation, racemization, among others). Finally, this review will also focus on a research perspective necessary to increase microbial lipases application development towards a greener industry.
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Borowiecki P, Zdun B, Popow N, Wiklińska M, Reiter T, Kroutil W. Development of a novel chemoenzymatic route to enantiomerically enriched β-adrenolytic agents. A case study toward propranolol, alprenolol, pindolol, carazolol, moprolol, and metoprolol. RSC Adv 2022; 12:22150-22160. [PMID: 36043081 PMCID: PMC9364081 DOI: 10.1039/d2ra04302e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022] Open
Abstract
Efficient chemoenzymatic routes toward the synthesis of both enantiomers of adrenergic β-blockers were accomplished by identifying a central chiral building block, which was first prepared using lipase-catalyzed kinetic resolution (KR, Amano PS-IM) as the asymmetric step at a five gram-scale (209 mM conc.). The enantiopure (R)-chlorohydrin (>99% ee) subsequently obtained was used for the synthesis of a series of model (R)-(+)-β-blockers (i.e., propranolol, alprenolol, pindolol, carazolol, moprolol, and metoprolol), which were produced with enantiomeric excess in the range of 96–99.9%. The pharmaceutically relevant (S)-counterpart, taking propranolol as a model, was synthesized in excellent enantiomeric purity (99% ee) via acetolysis of the respective enantiomerically pure (R)-mesylate by using cesium acetate and a catalytic amount of 18-Crown-6, followed by acidic hydrolysis of the formed (S)-acetate. Alternatively, asymmetric reduction of a prochiral ketone, namely 2-(3-chloro-2-oxopropyl)-1H-isoindole-1,3(2H)-dione, was performed using lyophilized E. coli cells harboring overexpressed recombinant alcohol dehydrogenase from Lactobacillus kefir (E. coli/Lk-ADH-Lica) giving the corresponding chlorohydrin with >99% ee. Setting the stereocenter early in the synthesis and performing a 4-step reaction sequence in a ‘one-pot two-step’ procedure allowed the design of a ‘step-economic’ route with a potential dramatic improvement in process efficiency. The synthetic method can serve for the preparation of a broad scope of enantiomerically enriched β-blockers, the chemical structures of which rely on the common α-hydroxy-N-isopropylamine moiety, and in this sense, might be industrially attractive. Efficient chemoenzymatic routes toward both enantiomers of β-blockers were accomplished by identifying a central chiral building block prepared using either lipase-catalyzed kinetic resolution methodology or ADH-catalyzed biotranshydrogenation.![]()
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Affiliation(s)
- Paweł Borowiecki
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology Koszykowa St. 75 00-662 Warsaw Poland
| | - Beata Zdun
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology Koszykowa St. 75 00-662 Warsaw Poland
| | - Natalia Popow
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology Koszykowa St. 75 00-662 Warsaw Poland
| | - Magdalena Wiklińska
- Laboratory of Biocatalysis and Biotransformation, Department of Drugs Technology and Biotechnology, Faculty of Chemistry, Warsaw University of Technology Koszykowa St. 75 00-662 Warsaw Poland
| | - Tamara Reiter
- Institute of Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Field of Excellence BioHealth Heinrichstrasse 28 8010 Graz Austria
| | - Wolfgang Kroutil
- Institute of Chemistry, University of Graz, NAWI Graz, BioTechMed Graz, Field of Excellence BioHealth Heinrichstrasse 28 8010 Graz Austria
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Dias MDRG, da Silva GPC, de Pauloveloso A, Krieger N, Pilissão C. Biocatalytic asymmetric synthesis of secondary allylic alcohols using Burkholderia cepacia lipase immobilized on multiwalled carbon nanotubes. Chirality 2022; 34:1008-1018. [PMID: 35506895 DOI: 10.1002/chir.23454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/28/2022] [Accepted: 04/19/2022] [Indexed: 11/11/2022]
Abstract
The lipase from Burkholderia cepacia (BCL) was immobilized through physical adsorption on pristine and functionalized multiwalled carbon nanotubes (MWCNTs) with carboxyl or amine groups and used in the stereoselective acylation of (R,S)-1-octen-3-ol (1) and (R,S)-(E)-4-phenyl-3-buten-2-ol (4) with vinyl acetate. All immobilized preparations produced better results than free BCL. For (R,S)-4, 50% conversion and E > 200 were obtained in n-hexane or in solvent-free medium. For (R,S)-1, in solvent-free medium, the conversion was 38% with a slight increase in the E-value (E = 10).
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Affiliation(s)
| | | | | | - Nadia Krieger
- Departamento de Química, Universidade Federal do Paraná, Curitiba, Brazil
| | - Cristiane Pilissão
- Departamento de Química e Biologia, Universidade Tecnológica Federal do Paraná, Curitiba, Brazil
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7
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Borowiecki P, Zdun B, Dranka M. Chemoenzymatic enantioselective and stereo-convergent syntheses of lisofylline enantiomers via lipase-catalyzed kinetic resolution and optical inversion approach. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Rational enhancement of enzyme-catalyzed enantioselective reaction by construction of recombinant enzymes based on additive strategy. Bioprocess Biosyst Eng 2019; 42:1739-1746. [PMID: 31321527 DOI: 10.1007/s00449-019-02170-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/08/2019] [Indexed: 01/04/2023]
Abstract
A rational enhancement of kinetic resolution process for producing (S)-N-(2-ethyl-6-methylphenyl) alanine from racemic methyl ester using lipase B from Candida antarctica (CalB) was investigated. With the benefit results that lipase CalB-catalyzed reactions can be effectively regulated using amino acids (such as histidine and lysine) as additives, CalBs modified (mCalBs) by n-histidines at the N terminal and n-lysines at the C terminal were constructed and expressed. The results show that both soluble and precipitated mCalBs can effectively catalyze the hydrolysis reaction without adding any extra additives. The enantioselective ratio (E value) of soluble and precipitated mCalBs could be improved from 12.1 to 20.3, which were higher than that (E value was only 10.2) of commercial Novozym 435 (immobilized CalB). The study indicated that the amino acid-rich molecules introduced on lipase CalB can produce positive effects on enantioselectivity of enzyme. It provides unusual ideas for reasonable regulation of enzyme-catalyzed reactions.
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Evaluation of the Candida sp. 99-125 Lipase Positional Selectivity for 1,3-Diolein Synthesis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4318631. [PMID: 31236406 PMCID: PMC6545781 DOI: 10.1155/2019/4318631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 02/06/2023]
Abstract
In this study, comparative experiments were carried out to investigate the positional selectivity of Candida sp. 99-125 lipase in preparing 1,3-diolein by using medium engineering strategy. The results indicated that the diolein yield was markedly enhanced from 56.5% to 86.7% with increasing logP values of the solvents, while the selectivity of the examined lipase for the sn-1 over the sn-2 hydroxyl of glycerol was decreased, thus leading to a reduced 1,3-diolein to 1,2-diolein ratio. To evaluate the possibility of industrial enzymatic production of 1,3-diolein, larger-scale experiments were assessed. After being used repeatedly for eight batches, the diolein content reached 95.1%, while the 1,3-diolein to 1,2-diolein ratio was 7:1 following purification. Results of the kg level experiments significantly demonstrated the practicability of the enzymatic process and the efficiency of the purification strategy for the product.
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Belkacemi FZ, Merabet-Khelassi M, Aribi-Zouioueche L, Riant O. Production of l-menthyl acetate through kinetic resolution by Candida cylindracea lipase: effects of alkaloids as additives. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3525-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Zhang K, Pan Z, Diao Z, Liang S, Han S, Zheng S, Lin Y. Kinetic resolution of sec -alcohols catalysed by Candida antarctica lipase B displaying Pichia pastoris whole-cell biocatalyst. Enzyme Microb Technol 2018; 110:8-13. [DOI: 10.1016/j.enzmictec.2017.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 11/05/2017] [Accepted: 11/13/2017] [Indexed: 11/30/2022]
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12
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Morohashi N, Hattori T. Selective guest inclusion by crystals of calixarenes: potential for application as separation materials. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0783-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Casas-Godoy L, Gasteazoro F, Duquesne S, Bordes F, Marty A, Sandoval G. Lipases: An Overview. Methods Mol Biol 2018; 1835:3-38. [PMID: 30109644 DOI: 10.1007/978-1-4939-8672-9_1] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lipases are ubiquitous enzymes, widespread in nature. They were first isolated from bacteria in the early nineteenth century, and the associated research continuously increased due to the characteristics of these enzymes. This chapter reviews the main sources, structural properties, and industrial applications of these highly studied enzymes.
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Affiliation(s)
- Leticia Casas-Godoy
- Cátedras CONACYT-Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Guadalajara, Jalisco, Mexico.
| | - Francisco Gasteazoro
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Guadalajara, Jalisco, Mexico
| | - Sophie Duquesne
- Université de Toulouse, INSA, UPS, INP; LISBP, Toulouse, France.,INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France.,CNRS, UMR5504, Toulouse, France
| | - Florence Bordes
- Université de Toulouse, INSA, UPS, INP; LISBP, Toulouse, France.,INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France.,CNRS, UMR5504, Toulouse, France
| | - Alain Marty
- Université de Toulouse, INSA, UPS, INP; LISBP, Toulouse, France.,INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, Toulouse, France.,CNRS, UMR5504, Toulouse, France
| | - Georgina Sandoval
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Guadalajara, Jalisco, Mexico
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Yoshida K, Ono M, Yamamoto T, Utsumi T, Koikeda S, Ema T. Synthetically useful variants of industrial lipases from Burkholderia cepacia and Pseudomonas fluorescens. Org Biomol Chem 2017; 15:8713-8719. [PMID: 28956057 DOI: 10.1039/c7ob01823a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Industrial enzymes lipase PS (LPS) and lipase AK (LAK), which originate from Burkholderia cepacia and Pseudomonas fluorescens, respectively, are synthetically useful biocatalysts. To strengthen their catalytic performances, we introduced two mutations into hot spots of the active sites (residues 287 and 290). The LPS_L287F/I290A double mutant showed high catalytic activity and enantioselectivity for poor substrates for which the wild-type enzyme showed very low activity. The LAK_V287F/I290A double mutant was also an excellent biocatalyst with expanded substrate scope, which was comparable to the LPS_L287F/I290A double mutant. Thermodynamic parameters were determined to address the origin of the high enantioselectivity of the double mutant. The ΔΔH‡ term, but not the ΔΔS‡ term, was predominant, which suggests that the enantioselectivity is driven by a differential energy associated with intermolecular interactions around Phe287 and Ala290. A remarkable solvent effect was observed, giving a bell-shaped profile between the E values and the log P or ε values of solvents with the highest E value in i-Pr2O. This suggests that an organic solvent with appropriate hydrophobicity and polarity provides the double mutant with some flexibility that is essential for excellent catalytic performance.
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Affiliation(s)
- Kazunori Yoshida
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
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15
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da Silva TS, Campos SK, de Oliveira AR, Piovan L. An unexpected inversion of CAL-B enantiopreference based on substrate engineering of 2-bromoesters: Effect of (R)-1-phenylethyl moiety. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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The effect of the migrating group structure on enantioselectivity in lipase-catalyzed kinetic resolution of 1-phenylethanol. CR CHIM 2016. [DOI: 10.1016/j.crci.2016.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Zhang Y, Jayawardena HSN, Yan M, Ramström O. Enzyme classification using complex dynamic hemithioacetal systems. Chem Commun (Camb) 2016; 52:5053-6. [PMID: 26987550 PMCID: PMC4820758 DOI: 10.1039/c6cc01823h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A complex dynamic hemithioacetal system was used in combination with pattern recognition methodology to classify lipases into distinct groups.
A complex dynamic hemithioacetal system was generated for the evaluation of lipase reactivities in organic media. In combination with pattern recognition methodology, twelve different lipases were successfully classified into four distinct groups following their reaction selectivities and reactivities. A probe lipase was further categorized using the training matrix with predicted reactivity.
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Affiliation(s)
- Yan Zhang
- Department of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, 10044 Stockholm, Sweden.
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Borowiecki P, Paprocki D, Dudzik A, Plenkiewicz J. Chemoenzymatic Synthesis of Proxyphylline Enantiomers. J Org Chem 2016; 81:380-95. [DOI: 10.1021/acs.joc.5b01840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Paweł Borowiecki
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
| | - Daniel Paprocki
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
| | - Agnieszka Dudzik
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek St. 8, 30-239 Cracow, Poland
| | - Jan Plenkiewicz
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
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Abstract
A mathematical framework is developed for analysis of solvent dependent reaction rates and selectivity in the case of complex catalytic reactions by incorporating solvent permittivity into the rate expressions.
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20
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Ema T, Inoue H. Chemical Modification of Lipase for Rational Enhancement of Enantioselectivity. CHEM LETT 2015. [DOI: 10.1246/cl.150667] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University
| | - Hiroki Inoue
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University
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