1
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Goux M, Demonceaux M, Hendrickx J, Solleux C, Lormeau E, Fredslund F, Tezé D, Offmann B, André-Miral C. Sucrose phosphorylase from Alteromonas mediterranea: Structural insight into the regioselective α-glucosylation of (+)-catechin. Biochimie 2024; 221:13-19. [PMID: 38199518 DOI: 10.1016/j.biochi.2024.01.004] [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: 04/10/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/12/2024]
Abstract
Sucrose phosphorylases, through transglycosylation reactions, are interesting enzymes that can transfer regioselectively glucose from sucrose, the donor substrate, onto acceptors like flavonoids to form glycoconjugates and hence modulate their solubility and bioactivity. Here, we report for the first time the structure of sucrose phosphorylase from the marine bacteria Alteromonas mediterranea (AmSP) and its enzymatic properties. Kinetics of sucrose hydrolysis and transglucosylation capacities on (+)-catechin were investigated. Wild-type enzyme (AmSP-WT) displayed high hydrolytic activity on sucrose and was devoid of transglucosylation activity on (+)-catechin. Two variants, AmSP-Q353F and AmSP-P140D catalysed the regiospecific transglucosylation of (+)-catechin: 89 % of a novel compound (+)-catechin-4'-O-α-d-glucopyranoside (CAT-4') for AmSP-P140D and 92 % of (+)-catechin-3'-O-α-d-glucopyranoside (CAT-3') for AmSP-Q353F. The compound CAT-4' was fully characterized by NMR and mass spectrometry. An explanation for this difference in regiospecificity was provided at atomic level by molecular docking simulations: AmSP-P140D was found to preferentially bind (+)-catechin in a mode that favours glucosylation on its hydroxyl group in position 4' while the binding mode in AmSP-Q353F favoured glucosylation on its hydroxyl group in position 3'.
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Affiliation(s)
- Marine Goux
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France
| | - Marie Demonceaux
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France
| | - Johann Hendrickx
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France
| | - Claude Solleux
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France
| | - Emilie Lormeau
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France
| | - Folmer Fredslund
- DTU Biosustain, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
| | - David Tezé
- DTU Biosustain, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
| | - Bernard Offmann
- Nantes Université, CNRS, US2B, UMR 6286, F-44000, Nantes, France.
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2
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Gonzalez-Alfonso JL, Alonso C, Poveda A, Ubiparip Z, Ballesteros AO, Desmet T, Jiménez-Barbero J, Coderch L, Plou FJ. Strategy for the Enzymatic Acylation of the Apple Flavonoid Phloretin Based on Prior α-Glucosylation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4325-4333. [PMID: 38350922 PMCID: PMC10905995 DOI: 10.1021/acs.jafc.3c09261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/15/2024]
Abstract
The acylation of flavonoids serves as a means to alter their physicochemical properties, enhance their stability, and improve their bioactivity. Compared with natural flavonoid glycosides, the acylation of nonglycosylated flavonoids presents greater challenges since they contain fewer reactive sites. In this work, we propose an efficient strategy to solve this problem based on a first α-glucosylation step catalyzed by a sucrose phosphorylase, followed by acylation using a lipase. The method was applied to phloretin, a bioactive dihydrochalcone mainly present in apples. Phloretin underwent initial glucosylation at the 4'-OH position, followed by subsequent (and quantitative) acylation with C8, C12, and C16 acyl chains employing an immobilized lipase from Thermomyces lanuginosus. Electrospray ionization-mass spectrometry (ESI-MS) and two-dimensional nuclear magnetic resonance spectroscopy (2D-NMR) confirmed that the acylation took place at 6-OH of glucose. The water solubility of C8 acyl glucoside closely resembled that of aglycone, but for C12 and C16 derivatives, it was approximately 3 times lower. Compared with phloretin, the radical scavenging capacity of the new derivatives slightly decreased with 2,2-diphenyl-1-picrylhydrazyl (DPPH) and was similar to 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+). Interestingly, C12 acyl-α-glucoside displayed an enhanced (3-fold) transdermal absorption (using pig skin biopsies) compared to phloretin and its α-glucoside.
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Affiliation(s)
| | - Cristina Alonso
- Institute
of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18–26, 08034 Barcelona, Spain
| | - Ana Poveda
- CIC
bioGUNE, Basque Research and Technology
Alliance (BRTA), 48160 Derio, Spain
| | - Zorica Ubiparip
- Centre
for Synthetic Biology (CSB), Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Antonio O. Ballesteros
- Institute
of Catalysis and Petrochemistry (ICP-CSIC), Marie Curie 2, 28049 Madrid, Spain
| | - Tom Desmet
- Centre
for Synthetic Biology (CSB), Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Jesús Jiménez-Barbero
- CIC
bioGUNE, Basque Research and Technology
Alliance (BRTA), 48160 Derio, Spain
- Basque
Foundation for Science, 48009 Bilbao, Spain
| | - Luisa Coderch
- Institute
of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18–26, 08034 Barcelona, Spain
| | - Francisco J. Plou
- Institute
of Catalysis and Petrochemistry (ICP-CSIC), Marie Curie 2, 28049 Madrid, Spain
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3
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Dhaene S, Van Laar A, De Doncker M, De Beul E, Beerens K, Grootaert C, Caroen J, Van der Eycken J, Van Camp J, Desmet T. Sweet Biotechnology: Enzymatic Production and Digestibility Screening of Novel Kojibiose and Nigerose Analogues. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3502-3511. [PMID: 35266393 DOI: 10.1021/acs.jafc.1c07709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In view of the global pandemic of obesity and related metabolic diseases, there is an increased interest in alternative carbohydrates with promising physiochemical and health-related properties as a potential replacement for traditional sugars. However, our current knowledge is limited to only a small selection of carbohydrates, whereas the majority of alternative rare carbohydrates and especially their properties remain to be investigated. Unraveling their potential properties, like digestibility and glycemic content, could unlock their use in industrial applications. Here, we describe the enzymatic production and in vitro digestibility of three novel glycosides, namely, two kojibiose analogues (i.e., d-Glcp-α-1,2-d-Gal and d-Glcp-α-1,2-d-Rib) and one nigerose analogue (i.e., d-Glcp-α-1,3-l-Ara). These novel sugars were discovered after an intensive acceptor screening with a sucrose phosphorylase originating from Bifidobacterium adolescentis (BaSP). Optimization and upscaling of this process led to roughly 100 g of these disaccharides. Digestibility, absorption, and caloric potential were assessed using brush border enzymes of rat origin and human intestinal Caco-2 cells. The rare disaccharides showed a reduced digestibility and a limited impact on energy metabolism, which was structure-dependent and even more pronounced for the three novel disaccharides in comparison to their respective glucobioses, translating to a low-caloric potential for these novel rare disaccharides.
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Affiliation(s)
- Shari Dhaene
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Amar Van Laar
- Department of Food technology, Safety and Health, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Marc De Doncker
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Emma De Beul
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Koen Beerens
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Charlotte Grootaert
- Department of Food technology, Safety and Health, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Jurgen Caroen
- Department of Organic and Macromolecular Chemistry, Laboratory for Organic and Bio-Organic Synthesis (LOBOS), Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Johan Van der Eycken
- Department of Organic and Macromolecular Chemistry, Laboratory for Organic and Bio-Organic Synthesis (LOBOS), Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - John Van Camp
- Department of Food technology, Safety and Health, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Tom Desmet
- Department of Biotechnology, Centre for Synthetic Biology (CSB), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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4
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González-Alfonso JL, Poveda A, Arribas M, Hirose Y, Fernández-Lobato M, Olmo Ballesteros A, Jiménez-Barbero J, Plou FJ. Polyglucosylation of Rutin Catalyzed by Cyclodextrin Glucanotransferase from Geobacillus sp.: Optimization and Chemical Characterization of Products. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Ana Poveda
- Center for Cooperative Research in Biosciences, CIC bioGUNE, Basque Research & Technology Alliance, BRTA, 48160 Derio, Biscay, Spain
| | - Miguel Arribas
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | | | - María Fernández-Lobato
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | | | - Jesús Jiménez-Barbero
- Center for Cooperative Research in Biosciences, CIC bioGUNE, Basque Research & Technology Alliance, BRTA, 48160 Derio, Biscay, Spain
- Ikerbasque, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Francisco J. Plou
- Instituto de Catálisis y Petroleoquímica, CSIC, Marie Curie, 2, 28049 Madrid, Spain
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5
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Li X, Meng X, de Leeuw TC, Te Poele EM, Pijning T, Dijkhuizen L, Liu W. Enzymatic glucosylation of polyphenols using glucansucrases and branching sucrases of glycoside hydrolase family 70. Crit Rev Food Sci Nutr 2021:1-21. [PMID: 34907830 DOI: 10.1080/10408398.2021.2016598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Polyphenols exhibit various beneficial biological activities and represent very promising candidates as active compounds for food industry. However, the low solubility, poor stability and low bioavailability of polyphenols have severely limited their industrial applications. Enzymatic glycosylation is an effective way to improve the physicochemical properties of polyphenols. As efficient transglucosidases, glycoside hydrolase family 70 (GH70) glucansucrases naturally catalyze the synthesis of polysaccharides and oligosaccharides from sucrose. Notably, GH70 glucansucrases show broad acceptor substrate promiscuity and catalyze the glucosylation of a wide range of non-carbohydrate hydroxyl group-containing molecules, including benzenediol, phenolic acids, flavonoids and steviol glycosides. Branching sucrase enzymes, a newly established subfamily of GH70, are shown to possess a broader acceptor substrate binding pocket that acts efficiently for glucosylation of larger size polyphenols such as flavonoids. Here we present a comprehensive review of glucosylation of polyphenols using GH70 glucansucrase and branching sucrases. Their catalytic efficiency, the regioselectivity of glucosylation and the structure of generated products are described for these reactions. Moreover, enzyme engineering is effective for improving their catalytic efficiency and product specificity. The combined information provides novel insights on the glucosylation of polyphenols by GH70 glucansucrases and branching sucrases, and may promote their applications.
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Affiliation(s)
- Xiaodan Li
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Xiangfeng Meng
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, People's Republic of China
| | | | | | - Tjaard Pijning
- Biomolecular X-ray Crystallography, University of Groningen, Groningen, The Netherlands
| | | | - Weifeng Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, People's Republic of China
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6
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Gonzalez‐Alfonso JL, Ubiparip Z, Jimenez‐Ortega E, Poveda A, Alonso C, Coderch L, Jimenez‐Barbero J, Sanz‐Aparicio J, Ballesteros AO, Desmet T, Plou FJ. Enzymatic Synthesis of Phloretin α‐Glucosides Using a Sucrose Phosphorylase Mutant and its Effect on Solubility, Antioxidant Properties and Skin Absorption. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jose L. Gonzalez‐Alfonso
- Institute of Catalysis and Petrochemistry (ICP-CSIC) 28049 Madrid Spain
- Centre for Synthetic Biology (CSB) Department of Biotechnology Ghent University 9000 Ghent Belgium
| | - Zorica Ubiparip
- Centre for Synthetic Biology (CSB) Department of Biotechnology Ghent University 9000 Ghent Belgium
| | | | - Ana Poveda
- Center for Cooperative Research in Biosciences CIC bioGUNE Basque Research & Technology Alliance, BRTA 48160 Derio Biscay Spain
| | - Cristina Alonso
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) 08034 Barcelona Spain
| | - Luisa Coderch
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) 08034 Barcelona Spain
| | - Jesus Jimenez‐Barbero
- Center for Cooperative Research in Biosciences CIC bioGUNE Basque Research & Technology Alliance, BRTA 48160 Derio Biscay Spain
- Ikerbasque, Basque Foundation for Science Plaza Euskadi 5 48009 Bilbao Spain
| | | | | | - Tom Desmet
- Centre for Synthetic Biology (CSB) Department of Biotechnology Ghent University 9000 Ghent Belgium
| | - Francisco J. Plou
- Institute of Catalysis and Petrochemistry (ICP-CSIC) 28049 Madrid Spain
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7
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Liu H, Tegl G, Nidetzky B. Glycosyltransferase Co‐Immobilization for Natural Product Glycosylation: Cascade Biosynthesis of the
C
‐Glucoside Nothofagin with Efficient Reuse of Enzymes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001549] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hui Liu
- Institute of Biotechnology and Biochemical Engineering Graz University of Technology, NAWI Graz Petersgasse 12 8010 Graz Austria
| | - Gregor Tegl
- Institute of Biotechnology and Biochemical Engineering Graz University of Technology, NAWI Graz Petersgasse 12 8010 Graz Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering Graz University of Technology, NAWI Graz Petersgasse 12 8010 Graz Austria
- Austrian Centre of Industrial Biotechnology (acib) Petersgasse 14 8010 Graz Austria
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8
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Sun S, You C. Disaccharide phosphorylases: Structure, catalytic mechanisms and directed evolution. Synth Syst Biotechnol 2021; 6:23-31. [PMID: 33665389 PMCID: PMC7896129 DOI: 10.1016/j.synbio.2021.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/13/2021] [Accepted: 01/31/2021] [Indexed: 12/16/2022] Open
Abstract
Disaccharide phosphorylases (DSPs) are carbohydrate-active enzymes with outstanding potential for the biocatalytic conversion of common table sugar into products with attractive properties. They are modular enzymes that form active homo-oligomers. From a mechanistic as well as a structural point of view, they are similar to glycoside hydrolases or glycosyltransferases. As the majority of DSPs show strict stereo- and regiospecificities, these enzymes were used to synthesize specific disaccharides. Currently, protein engineering of DSPs is pursued in different laboratories to broaden the donor and acceptor substrate specificities or improve the industrial particularity of naturally existing enzymes, to eventually generate a toolbox of new catalysts for glycoside synthesis. Herein we review the characteristics and classifications of reported DSPs and the glycoside products that they have been used to synthesize.
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Affiliation(s)
- Shangshang Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, People’s Republic of China
| | - Chun You
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin, 300308, People’s Republic of China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing, 100049, People’s Republic of China
- National Technology Innovation Center of Synthetic Biology, Tianjin, 300308, People’s Republic of China
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9
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He X, Li Y, Tao Y, Qi X, Ma R, Jia H, Yan M, Chen K, Hao N. Discovering and efficiently promoting the extracellular secretory expression of Thermobacillus sp. ZCTH02-B1 sucrose phosphorylase in Escherichia coli. Int J Biol Macromol 2021; 173:532-540. [PMID: 33482210 DOI: 10.1016/j.ijbiomac.2021.01.115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/16/2021] [Accepted: 01/17/2021] [Indexed: 12/22/2022]
Abstract
Sucrose phosphorylase (SPase, EC2.4.1.7) is a promising transglycosylation biocatalyst used for producing glycosylated compounds that are widely used in the food, cosmetics, and pharmaceutical industries. In this study, a recombinant SPase from the Thermobacillus sp. ZCTH02-B1 (rTSPase), which was previously reported to have high thermostability and the catalytic ability to synthesize ascorbic acid 2-glucoside, was attempted to be extracellularly expressed in Escherichia coli BL21(DE3) by fusion of endogenous osmotically-inducible protein Y. Unexpectedly, the rTSPase itself was produced outside the cells with an underestimated performance, although no typical signal peptide was predicted. Further N- and C-terminal truncation experiments revealed that both termini of rTSPase have an important role in protein folding and enzymatic activity, while its secretion was N-terminus associated. Extracellular protein concentration and rTSPase activity achieved 1.8 mg/mL and 6.2 U/mL after induction of 36 h in a 5-L fermenter. High-level extracellular rTSPase production could also be obtained from E. coli within 24 h by inducing overexpression of D, D-carboxypeptidase for cell lysis.
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Affiliation(s)
- Xiaoying He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yehui Tao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xuelian Qi
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ruiqi Ma
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Ming Yan
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kequan Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Hao
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
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10
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Klimacek M, Sigg A, Nidetzky B. On the donor substrate dependence of group-transfer reactions by hydrolytic enzymes: Insight from kinetic analysis of sucrose phosphorylase-catalyzed transglycosylation. Biotechnol Bioeng 2020; 117:2933-2943. [PMID: 32573774 PMCID: PMC7540478 DOI: 10.1002/bit.27471] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/15/2020] [Accepted: 06/21/2020] [Indexed: 12/30/2022]
Abstract
Chemical group-transfer reactions by hydrolytic enzymes have considerable importance in biocatalytic synthesis and are exploited broadly in commercial-scale chemical production. Mechanistically, these reactions have in common the involvement of a covalent enzyme intermediate which is formed upon enzyme reaction with the donor substrate and is subsequently intercepted by a suitable acceptor. Here, we studied the glycosylation of glycerol from sucrose by sucrose phosphorylase (SucP) to clarify a peculiar, yet generally important characteristic of this reaction: partitioning between glycosylation of glycerol and hydrolysis depends on the type and the concentration of the donor substrate used (here: sucrose, α-d-glucose 1-phosphate (G1P)). We develop a kinetic framework to analyze the effect and provide evidence that, when G1P is used as donor substrate, hydrolysis occurs not only from the β-glucosyl-enzyme intermediate (E-Glc), but additionally from a noncovalent complex of E-Glc and substrate which unlike E-Glc is unreactive to glycerol. Depending on the relative rates of hydrolysis of free and substrate-bound E-Glc, inhibition (Leuconostoc mesenteroides SucP) or apparent activation (Bifidobacterium adolescentis SucP) is observed at high donor substrate concentration. At a G1P concentration that excludes the substrate-bound E-Glc, the transfer/hydrolysis ratio changes to a value consistent with reaction exclusively through E-Glc, independent of the donor substrate used. Collectively, these results give explanation for a kinetic behavior of SucP not previously accounted for, provide essential basis for design and optimization of the synthetic reaction, and establish a theoretical framework for the analysis of kinetically analogous group-transfer reactions by hydrolytic enzymes.
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Affiliation(s)
- Mario Klimacek
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Alexander Sigg
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Graz, Austria.,Austrian Centre of Industrial Biotechnology (acib), Graz, Austria
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11
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Franceus J, Desmet T. Sucrose Phosphorylase and Related Enzymes in Glycoside Hydrolase Family 13: Discovery, Application and Engineering. Int J Mol Sci 2020; 21:E2526. [PMID: 32260541 PMCID: PMC7178133 DOI: 10.3390/ijms21072526] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 02/07/2023] Open
Abstract
Sucrose phosphorylases are carbohydrate-active enzymes with outstanding potential for the biocatalytic conversion of common table sugar into products with attractive properties. They belong to the glycoside hydrolase family GH13, where they are found in subfamily 18. In bacteria, these enzymes catalyse the phosphorolysis of sucrose to yield α-glucose 1-phosphate and fructose. However, sucrose phosphorylases can also be applied as versatile transglucosylases for the synthesis of valuable glycosides and sugars because their broad promiscuity allows them to transfer the glucosyl group of sucrose to a diverse collection of compounds other than phosphate. Numerous process and enzyme engineering studies have expanded the range of possible applications of sucrose phosphorylases ever further. Moreover, it has recently been discovered that family GH13 also contains a few novel phosphorylases that are specialised in the phosphorolysis of sucrose 6F-phosphate, glucosylglycerol or glucosylglycerate. In this review, we provide an overview of the progress that has been made in our understanding and exploitation of sucrose phosphorylases and related enzymes over the past ten years.
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Affiliation(s)
| | - Tom Desmet
- Centre for Synthetic Biology (CSB), Department of Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium;
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12
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Ali M, Ishqi HM, Husain Q. Enzyme engineering: Reshaping the biocatalytic functions. Biotechnol Bioeng 2020; 117:1877-1894. [DOI: 10.1002/bit.27329] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/13/2020] [Accepted: 03/09/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Misha Ali
- Department of Biochemistry, Faculty of Life SciencesAligarh Muslim University Aligarh Uttar Pradesh India
| | | | - Qayyum Husain
- Department of Biochemistry, Faculty of Life SciencesAligarh Muslim University Aligarh Uttar Pradesh India
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13
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Structural Comparison of a Promiscuous and a Highly Specific Sucrose 6 F-Phosphate Phosphorylase. Int J Mol Sci 2019; 20:ijms20163906. [PMID: 31405215 PMCID: PMC6720575 DOI: 10.3390/ijms20163906] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/06/2019] [Accepted: 08/08/2019] [Indexed: 12/17/2022] Open
Abstract
In family GH13 of the carbohydrate-active enzyme database, subfamily 18 contains glycoside phosphorylases that act on α-sugars and glucosides. Because their phosphorolysis reactions are effectively reversible, these enzymes are of interest for the biocatalytic synthesis of various glycosidic compounds. Sucrose 6F-phosphate phosphorylases (SPPs) constitute one of the known substrate specificities. Here, we report the characterization of an SPP from Ilumatobacter coccineus with a far stricter specificity than the previously described promiscuous SPP from Thermoanaerobacterium thermosaccharolyticum. Crystal structures of both SPPs were determined to provide insight into their similarities and differences. The residues responsible for binding the fructose 6-phosphate group in subsite +1 were found to differ considerably between the two enzymes. Furthermore, several variants that introduce a higher degree of substrate promiscuity in the strict SPP from I. coccineus were designed. These results contribute to an expanded structural knowledge of enzymes in subfamily GH13_18 and facilitate their rational engineering.
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14
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Khan AZ, Bilal M, Rasheed T, Iqbal HM. Advancements in biocatalysis: From computational to metabolic engineering. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(18)63144-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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15
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Míguez N, Ramírez‐Escudero M, Gimeno‐Pérez M, Poveda A, Jiménez‐Barbero J, Ballesteros AO, Fernández‐Lobato M, Sanz‐Aparicio J, Plou FJ. Fructosylation of Hydroxytyrosol by the β‐Fructofuranosidase from
Xanthophyllomyces dendrorhous
: Insights into the Molecular Basis of the Enzyme Specificity. ChemCatChem 2018. [DOI: 10.1002/cctc.201801171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Noa Míguez
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
| | - Mercedes Ramírez‐Escudero
- Macromolecular Crystallography and Structural Biology Department Institute of Physical-Chemistry Rocasolano (CSIC) Madrid 28006 Spain
| | - María Gimeno‐Pérez
- Molecular Biology Department Centre of Molecular Biology Severo Ochoa (CSIC-UAM)Autonomous University of Madrid Madrid 28049 Spain
| | - Ana Poveda
- CIC bioGUNE: Center for Cooperative Research in Biosciences Basque Network of Science Technology and InnovationBiscay Science and Technology Park Derio 48160 Spain
| | - Jesús Jiménez‐Barbero
- CIC bioGUNE: Center for Cooperative Research in Biosciences Basque Network of Science Technology and InnovationBiscay Science and Technology Park Derio 48160 Spain
| | - Antonio O. Ballesteros
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
| | - María Fernández‐Lobato
- Molecular Biology Department Centre of Molecular Biology Severo Ochoa (CSIC-UAM)Autonomous University of Madrid Madrid 28049 Spain
| | - Julia Sanz‐Aparicio
- Macromolecular Crystallography and Structural Biology Department Institute of Physical-Chemistry Rocasolano (CSIC) Madrid 28006 Spain
| | - Francisco J. Plou
- Biocatalysis DepartmentInstitute of Catalysis and Petrochemistry (CSIC) Madrid 28049 Spain
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16
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Gonzalez-Alfonso JL, Leemans L, Poveda A, Jimenez-Barbero J, Ballesteros AO, Plou FJ. Efficient α-Glucosylation of Epigallocatechin Gallate Catalyzed by Cyclodextrin Glucanotransferase from Thermoanaerobacter Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7402-7408. [PMID: 29939740 DOI: 10.1021/acs.jafc.8b02143] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The glycosylation of plant polyphenols may modulate their solubility and bioavailability and protect these molecules from oxygen, light degradation, and during gastrointestinal transit. In this work, the synthesis of various α-glucosyl derivatives of (-)-epigallocatechin gallate, the predominant catechin in green tea, was performed in water at 50 °C by a transglycosylation reaction catalyzed by cyclodextrin glycosyltransferase from Thermoanaerobacter sp. The molecular weight of reaction products was determined by high-performance liquid chromatography coupled to mass spectrometry. Using hydrolyzed potato starch as a glucosyl donor, two main monoglucosides were obtained with conversion yields of 58 and 13%, respectively. The products were isolated and chemically characterized by combining two-dimensional nuclear magnetic resonance methods. The major derivative was epigallocatechin gallate 3'- O-α-d-glucopyranoside (1), and the minor derivative was epigallocatechin gallate 7- O-α-d-glucopyranoside (2).
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Affiliation(s)
- Jose L Gonzalez-Alfonso
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Laura Leemans
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Ana Poveda
- Center for Cooperative Research in Biosciences , Parque Científico Tecnológico de Bizkaia , 48160 Derio , Biscay , Spain
| | - Jesús Jimenez-Barbero
- Center for Cooperative Research in Biosciences , Parque Científico Tecnológico de Bizkaia , 48160 Derio , Biscay , Spain
- Ikerbasque , Basque Foundation for Science , Maria Diaz de Haro 13 , 48009 Bilbao , Spain
| | - Antonio O Ballesteros
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
| | - Francisco J Plou
- Instituto de Catálisis y Petroleoquímica , Consejo Superior de Investigaciones Científicas (CSIC) , 28049 Madrid , Spain
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17
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Kraus M, Grimm C, Seibel J. Reversibility of a Point Mutation Induced Domain Shift: Expanding the Conformational Space of a Sucrose Phosphorylase. Sci Rep 2018; 8:10490. [PMID: 29993032 PMCID: PMC6041289 DOI: 10.1038/s41598-018-28802-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/11/2018] [Indexed: 11/28/2022] Open
Abstract
Despite their popularity as enzyme engineering targets structural information about Sucrose Phosphorylases remains scarce. We recently clarified that the Q345F variant of Bifidobacterium adolescentis Sucrose Phosphorylase is able to accept large polyphenolic substrates like resveratrol via a domain shift. Here we present a crystal structure of this variant in a conformation suitable for the accommodation of the donor substrate sucrose in excellent agreement with the wild type structure. Remarkably, this conformation does not feature the previously observed domain shift which is therefore reversible and part of a dynamic process rather than a static phenomenon. This crystallographic snapshot completes our understanding of the catalytic cycle of this useful variant and will allow for a more rational design of further generations of Sucrose Phosphorylase variants.
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Affiliation(s)
- Michael Kraus
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Clemens Grimm
- Department of Biochemistry, Theodor Boveri-Institute, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
| | - Jürgen Seibel
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
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18
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Kraus M, Grimm C, Seibel J. Switching enzyme specificity from phosphate to resveratrol glucosylation. Chem Commun (Camb) 2018; 53:12181-12184. [PMID: 29057405 DOI: 10.1039/c7cc05993k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Here we present a point mutation-triggered domain shift which switches the acceptor preference of a sucrose phosphorylase from phosphate to a variety of large polyphenolic compounds including resveratrol and quercetin, enabling their efficient glucosylation. The variant possesses a high affinity for aromatic substrates due to newly introduced π-π- and hydrophobic interactions in the altered active site. The domain shift brings about a substantially enlarged and multifunctional active site for polyphenol glucosylation and rare disaccharide production. The crystal structure of the variant with its product resveratrol-3-α-d-glucoside allows the prediction of the substrate scope and regioselectivity of the aromatic compounds' glucosylation sites.
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Affiliation(s)
- Michael Kraus
- Department of Organic Chemistry, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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19
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Glucosylglycerate Phosphorylase, an Enzyme with Novel Specificity Involved in Compatible Solute Metabolism. Appl Environ Microbiol 2017; 83:AEM.01434-17. [PMID: 28754708 DOI: 10.1128/aem.01434-17] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 07/25/2017] [Indexed: 12/19/2022] Open
Abstract
Family GH13_18 of the carbohydrate-active enzyme database consists of retaining glycoside phosphorylases that have attracted interest with their potential for synthesizing valuable α-sugars and glucosides. Sucrose phosphorylase was believed to be the only enzyme with specificity in this subfamily for many years, but recent work revealed an enzyme with a different function and hinted at an even broader diversity that is left to discover. In this study, a putative sucrose phosphorylase from Meiothermus silvanus that resides in a previously unexplored branch of the family's phylogenetic tree was expressed and characterized. Unexpectedly, no activity on sucrose was observed. Guided by a thorough inspection of the genomic landscape surrounding other genes in the branch, the enzyme was found to be a glucosylglycerate phosphorylase, with a specificity never before reported. Homology modeling, docking, and mutagenesis pinpointed particular acceptor site residues (Asn275 and Glu383) involved in the binding of glycerate. Various organisms known to synthesize and accumulate glucosylglycerate as a compatible solute possess a putative glucosylglycerate phosphorylase gene, indicating that the phosphorylase may be a regulator of its intracellular levels. Moreover, homologs of this novel enzyme appear to be distributed among diverse bacterial phyla, a finding which suggests that many more organisms may be capable of assimilating or synthesizing glucosylglycerate than previously assumed.IMPORTANCE Glycoside phosphorylases are an intriguing group of carbohydrate-active enzymes that have been used for the synthesis of various economically appealing glycosides and sugars, and they are frequently subjected to enzyme engineering to further expand their application potential. The novel specificity discovered in this work broadens the diversity of these phosphorylases and opens up new possibilities for the efficient production of glucosylglycerate, which is a remarkably potent and versatile stabilizer for protein formulations. Finally, it is a new piece of the puzzle of glucosylglycerate metabolism, being the only known enzyme capable of catalyzing the breakdown of glucosylglycerate in numerous bacterial phyla.
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20
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Gudiminchi RK, Nidetzky B. Walking a Fine Line with Sucrose Phosphorylase: Efficient Single-Step Biocatalytic Production of l-Ascorbic Acid 2-Glucoside from Sucrose. Chembiochem 2017; 18:1387-1390. [PMID: 28426168 DOI: 10.1002/cbic.201700215] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Indexed: 01/04/2023]
Abstract
The 2-O-α-d-glucoside of l-ascorbic acid (AA-2G) is a highly stabilized form of vitamin C, with important industrial applications in cosmetics, food, and pharmaceuticals. AA-2G is currently produced through biocatalytic glucosylation of l-ascorbic acid from starch-derived oligosaccharides. Sucrose would be an ideal substrate for AA-2G synthesis, but it lacks a suitable transglycosidase. We show here that in a narrow pH window (pH 4.8-6.0, with sharp optimum at pH 5.2), sucrose phosphorylases catalyzed the 2-O-α-glucosylation of l-ascorbic acid from sucrose with high efficiency and perfect site-selectivity. Optimized synthesis with the enzyme from Bifidobacterium longum at 40 °C gave a concentrated product (155 g L-1 ; 460 mm), from which pure AA-2G was readily recovered in ∼50 % overall yield, thus providing the basis for advanced production. The peculiar pH dependence is suggested to arise from a "reverse-protonation" mechanism in which the catalytic base Glu232 on the glucosyl-enzyme intermediate must be protonated for attack on the anomeric carbon from the 2-hydroxyl of the ionized l-ascorbate substrate.
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Affiliation(s)
| | - Bernd Nidetzky
- Austrian Centre of Industrial Biotechnology, 14 Petersgasse, 8010, Graz, Austria.,Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, 12/1 Petersgasse, 8010, Graz, Austria
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21
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Ebert MC, Pelletier JN. Computational tools for enzyme improvement: why everyone can - and should - use them. Curr Opin Chem Biol 2017; 37:89-96. [PMID: 28231515 DOI: 10.1016/j.cbpa.2017.01.021] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 01/25/2017] [Accepted: 01/30/2017] [Indexed: 12/12/2022]
Abstract
This review presents computational methods that experimentalists can readily use to create smart libraries for enzyme engineering and to obtain insights into protein-substrate complexes. Computational tools have the reputation of being hard to use and inaccurate compared to experimental methods in enzyme engineering, yet they are essential to probe datasets of ever-increasing size and complexity. In recent years, bioinformatics groups have made a huge leap forward in providing user-friendly interfaces and accurate algorithms for experimentalists. These methods guide efficient experimental planning and allow the enzyme engineer to rationalize time and resources. Computational tools nevertheless face challenges in the realm of transient modern technology.
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Affiliation(s)
- Maximilian Ccjc Ebert
- Département de biochimie and Center for Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3T 1J4, Canada; PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Québec, QC G1V 0A6, Canada
| | - Joelle N Pelletier
- Département de biochimie and Center for Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3T 1J4, Canada; PROTEO, The Québec Network for Research on Protein Function, Engineering and Applications, Québec, QC G1V 0A6, Canada; Département de chimie, Université de Montréal, Montréal, QC H3T 1J4, Canada.
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22
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Tolnai GL, Nilsson UJ, Olofsson B. Efficient O-Functionalization of Carbohydrates with Electrophilic Reagents. Angew Chem Int Ed Engl 2016; 55:11226-30. [PMID: 27528184 PMCID: PMC5113792 DOI: 10.1002/anie.201605999] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/12/2016] [Indexed: 12/11/2022]
Abstract
Novel methodology for O-functionalization of carbohydrate derivatives has been established using bench-stable and easily prepared iodonium(III) reagents. Both electron-withdrawing and electron-donating aryl groups were introduced under ambient conditions and without precautions to exclude air or moisture. Furthermore, the approach was extended both to full arylation of cyclodextrin, and to trifluoroethylation of carbohydrate derivatives. This is the first general approach to introduce traditionally non-electrophilic groups into any of the OH groups around the sugar backbone. The methodology will be useful both in synthetic organic chemistry and biochemistry, as important functional groups can be incorporated under simple and robust reaction conditions in a fast and efficient manner.
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Affiliation(s)
- Gergely L Tolnai
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Ulf J Nilsson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, 22100, Lund, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden.
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23
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Dewitte G, Walmagh M, Diricks M, Lepak A, Gutmann A, Nidetzky B, Desmet T. Screening of recombinant glycosyltransferases reveals the broad acceptor specificity of stevia UGT-76G1. J Biotechnol 2016; 233:49-55. [DOI: 10.1016/j.jbiotec.2016.06.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/21/2016] [Accepted: 06/30/2016] [Indexed: 12/23/2022]
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24
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Tolnai GL, Nilsson UJ, Olofsson B. Efficient O-Functionalization of Carbohydrates with Electrophilic Reagents. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605999] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Gergely L. Tolnai
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 10691 Stockholm Sweden
| | - Ulf J. Nilsson
- Centre for Analysis and Synthesis; Department of Chemistry; Lund University; 22100 Lund Sweden
| | - Berit Olofsson
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 10691 Stockholm Sweden
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25
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Devlamynck T, Te Poele EM, Meng X, van Leeuwen SS, Dijkhuizen L. Glucansucrase Gtf180-ΔN of Lactobacillus reuteri 180: enzyme and reaction engineering for improved glycosylation of non-carbohydrate molecules. Appl Microbiol Biotechnol 2016; 100:7529-39. [PMID: 27052379 PMCID: PMC4980424 DOI: 10.1007/s00253-016-7476-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 03/08/2016] [Accepted: 03/15/2016] [Indexed: 12/24/2022]
Abstract
Glucansucrases have a broad acceptor substrate specificity and receive increased attention as biocatalysts for the glycosylation of small non-carbohydrate molecules using sucrose as donor substrate. However, the main glucansucrase-catalyzed reaction results in synthesis of α-glucan polysaccharides from sucrose, and this strongly impedes the efficient glycosylation of non-carbohydrate molecules and complicates downstream processing of glucosylated products. This paper reports that suppressing α-glucan synthesis by mutational engineering of the Gtf180-ΔN enzyme of Lactobacillus reuteri 180 results in the construction of more efficient glycosylation biocatalysts. Gtf180-ΔN mutants (L938F, L981A, and N1029M) with an impaired α-glucan synthesis displayed a substantial increase in monoglycosylation yields for several phenolic and alcoholic compounds. Kinetic analysis revealed that these mutants possess a higher affinity for the model acceptor substrate catechol but a lower affinity for its mono-α-d-glucoside product, explaining the improved monoglycosylation yields. Analysis of the available high resolution 3D crystal structure of the Gtf180-ΔN protein provided a clear understanding of how mutagenesis of residues L938, L981, and N1029 impaired α-glucan synthesis, thus yielding mutants with an improved glycosylation potential.
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Affiliation(s)
- Tim Devlamynck
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Evelien M Te Poele
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
| | - Xiangfeng Meng
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
| | - Sander S van Leeuwen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands
| | - Lubbert Dijkhuizen
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands.
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26
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Xu L, Qi T, Xu L, Lu L, Xiao M. Recent progress in the enzymatic glycosylation of phenolic compounds. J Carbohydr Chem 2016. [DOI: 10.1080/07328303.2015.1137580] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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27
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Kraus M, Grimm C, Seibel J. Redesign of the Active Site of Sucrose Phosphorylase through a Clash-Induced Cascade of Loop Shifts. Chembiochem 2015; 17:33-6. [PMID: 26527586 DOI: 10.1002/cbic.201500514] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 12/24/2022]
Abstract
Sucrose phosphorylases have been applied in the enzymatic production of glycosylated compounds for decades. However, several desirable acceptors, such as flavonoids or stilbenoids, that exhibit diverse antimicrobial, anticarcinogenic or antioxidant properties, remain poor substrates. The Q345F exchange in sucrose phosphorylase from Bifidobacterium adolescentis allows efficient glucosylation of resveratrol, (+)-catechin and (-)-epicatechin in yields of up to 97 % whereas the wild-type enzyme favours sucrose hydrolysis. Three previously undescribed products are made available. The crystal structure of the variant reveals a widened access channel with a hydrophobic aromatic surface that is likely to contribute to the improved activity towards aromatic acceptors. The generation of this channel can be explained in terms of a cascade of structural changes arising from the Q345F exchange. The observed mechanisms are likely to be relevant for the design of other tailor-made enzymes.
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Affiliation(s)
- Michael Kraus
- Department of Organic Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Clemens Grimm
- Department of Biochemistry, Theodor Boveri-Institute, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
| | - Jürgen Seibel
- Department of Organic Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
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28
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De Winter K, Dewitte G, Dirks-Hofmeister ME, De Laet S, Pelantová H, Křen V, Desmet T. Enzymatic Glycosylation of Phenolic Antioxidants: Phosphorylase-Mediated Synthesis and Characterization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:10131-9. [PMID: 26540621 DOI: 10.1021/acs.jafc.5b04380] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Although numerous biologically active molecules exist as glycosides in nature, information on the activity, stability, and solubility of glycosylated antioxidants is rather limited to date. In this work, a wide variety of antioxidants were glycosylated using different phosphorylase enzymes. The resulting antioxidant library, containing α/β-glucosides, different regioisomers, cellobiosides, and cellotriosides, was then characterized. Glycosylation was found to significantly increase the solubility and stability of all evaluated compounds. Despite decreased radical-scavenging abilities, most glycosides were identified to be potent antioxidants, outperforming the commonly used 2,6-bis(1,1-dimethylethyl)-4-methylphenol (BHT). Moreover, the point of attachment, the anomeric configuration, and the glycosidic chain length were found to influence the properties of these phenolic glycosides.
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Affiliation(s)
- Karel De Winter
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Biosciences Engineering, Ghent University , Coupure Links 653, B-9000 Ghent, Belgium
| | - Griet Dewitte
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Biosciences Engineering, Ghent University , Coupure Links 653, B-9000 Ghent, Belgium
| | - Mareike E Dirks-Hofmeister
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Biosciences Engineering, Ghent University , Coupure Links 653, B-9000 Ghent, Belgium
| | - Sylvie De Laet
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Biosciences Engineering, Ghent University , Coupure Links 653, B-9000 Ghent, Belgium
| | | | | | - Tom Desmet
- Centre for Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Biosciences Engineering, Ghent University , Coupure Links 653, B-9000 Ghent, Belgium
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