201
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Sheldon RA. Biocatalysis and Biomass Conversion in Alternative Reaction Media. Chemistry 2016; 22:12984-99. [DOI: 10.1002/chem.201601940] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Roger A. Sheldon
- Molecular Sciences Institute; School of Chemistry; University of the Witwatersrand; 2050; Johannesburg South Africa
- Department of Biotechnology; Delft University of Technology; Julianalaan 136 2628 BL Delft Netherlands
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202
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Xiang Y, Song J, Zhang Y, Yang DC, Guan Z, He YH. Enzyme-Catalyzed Asymmetric Domino Thia-Michael/Aldol Condensation Using Pepsin. J Org Chem 2016; 81:6042-8. [DOI: 10.1021/acs.joc.6b01132] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yang Xiang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Jian Song
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yong Zhang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Da-Cheng Yang
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Zhi Guan
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yan-Hong He
- Key Laboratory of Applied
Chemistry of Chongqing Municipality, School of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, P. R. China
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203
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Biundo A, Ribitsch D, Syren PO, Guebitz GM. Increasing amide acceptance on a polyester-hydrolyzing enzyme. N Biotechnol 2016. [DOI: 10.1016/j.nbt.2016.06.1088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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204
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Hua X, Xing Y, Zhang X. Enhanced Promiscuity of Lipase-Inorganic Nanocrystal Composites in the Epoxidation of Fatty Acids in Organic Media. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16257-16261. [PMID: 27269580 DOI: 10.1021/acsami.6b05061] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the present study, Candida antarctica lipase B (CALB) was encapsulated in inorganic nanocrystal composites with flower-like shapes, retaining 92% of its catalytic activity compared to that of native lipase. Surprisingly, CALB-inorganic crystal nanoflowers exhibited promiscuous activity at levels 25- and 4-fold higher than those of native lipase and the commercial immobilized lipase Novozym 435, respectively, as demonstrated by the chemoenzymatic epoxidation of fatty acids conducted in organic media. To the best of our knowledge, we showed for the first time that the promiscuity of enzymes can be significantly improved by enzyme immobilization, suggesting that the enzyme-inorganic nanocrystal composites are a very promising type of immobilized enzyme that can be used to address the challenge of the extremely low efficiency of enzymatic promiscuity.
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Affiliation(s)
- Xiufu Hua
- Department of Environmental Engineering, University of Science and Technology , Beijing 100083, China
- Department of Scientific Research and Development, Tsinghua University , Beijing 100084, China
| | - Yi Xing
- Department of Environmental Engineering, University of Science and Technology , Beijing 100083, China
| | - Xuan Zhang
- Department of Chemical Engineering, Northwest University , Xi'an 710069, China
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205
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Mechanism-Guided Discovery of an Esterase Scaffold with Promiscuous Amidase Activity. Catalysts 2016. [DOI: 10.3390/catal6060090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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206
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A β-Alanine Catabolism Pathway Containing a Highly Promiscuous ω-Transaminase in the 12-Aminododecanate-Degrading Pseudomonas sp. Strain AAC. Appl Environ Microbiol 2016; 82:3846-3856. [PMID: 27107110 PMCID: PMC4907197 DOI: 10.1128/aem.00665-16] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 04/12/2016] [Indexed: 11/20/2022] Open
Abstract
We previously isolated the transaminase KES23458 from Pseudomonas sp. strain AAC as a promising biocatalyst for the production of 12-aminododecanoic acid, a constituent building block of nylon-12. Here, we report the subsequent characterization of this transaminase. It exhibits activity with a broad substrate range which includes α-, β-, and ω-amino acids, as well as α,ω-diamines and a number of other industrially relevant compounds. It is therefore a prospective candidate for the biosynthesis of a range of polyamide monomers. The crystal structure of KES23458 revealed that the protein forms a dimer containing a large active site pocket and unusual phosphorylated histidine residues. To infer the physiological role of the transaminase, we expressed, purified, and characterized a dehydrogenase from the same operon, KES23460. Unlike the transaminase, the dehydrogenase was shown to be quite selective, catalyzing the oxidation of malonic acid semialdehyde, formed from β-alanine transamination via KES23458. In keeping with previous reports, the dehydrogenase was shown to catalyze both a coenzyme A (CoA)-dependent reaction to form acetyl-CoA and a significantly slower CoA-independent reaction to form acetate. These findings support the original functional assignment of KES23458 as a β-alanine transaminase. However, a seemingly well-adapted active site and promiscuity toward unnatural compounds, such as 12-aminododecanoic acid, suggest that this enzyme could perform multiple functions for Pseudomonas sp. strain AAC. IMPORTANCE We describe the characterization of an industrially relevant transaminase able to metabolize 12-aminododecanoic acid, a constituent building block of the widely used polymer nylon-12, and we report the biochemical and structural characterization of the transaminase protein. A physiological role for this highly promiscuous enzyme is proposed based on the characterization of a related gene from the host organism. Molecular dynamics simulations were carried out to compare the conformational changes in the transaminase protein to better understand the determinants of specificity in the protein. This study makes a substantial contribution that is of interest to the broad biotechnology and enzymology communities, providing insights into the catalytic activity of an industrially relevant biocatalyst as well as the biological function of this operon.
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207
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Enzyme-catalyzed asymmetric domino aza-Michael/aldol reaction for the synthesis of 1,2-dihydroquinolines using pepsin from porcine gastric mucosa. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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208
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Biggs BW, Rouck JE, Kambalyal A, Arnold W, Lim CG, De Mey M, O’Neil-Johnson M, Starks CM, Das A, Ajikumar PK. Orthogonal Assays Clarify the Oxidative Biochemistry of Taxol P450 CYP725A4. ACS Chem Biol 2016; 11:1445-51. [PMID: 26930136 DOI: 10.1021/acschembio.5b00968] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Natural product metabolic engineering potentially offers sustainable and affordable access to numerous valuable molecules. However, challenges in characterizing and assembling complex biosynthetic pathways have prevented more rapid progress in this field. The anticancer agent Taxol represents an excellent case study. Assembly of a biosynthetic pathway for Taxol has long been stalled at its first functionalization, putatively an oxygenation performed by the cytochrome P450 CYP725A4, due to confounding characterizations. Here, through combined in vivo (Escherichia coli), in vitro (lipid nanodisc), and metabolite stability assays, we verify the presence and likely cause of this enzyme's inherent promiscuity. Thereby, we remove the possibility that promiscuity simply existed as an artifact of previous metabolic engineering approaches. Further, spontaneous rearrangement and the stabilizing effect of a hydrophobic overlay suggest a potential role for nonenzymatic chemistry in Taxol's biosynthesis. Taken together, this work confirms taxadiene-5α-ol as a primary enzymatic product of CYP725A4 and provides direction for future Taxol metabolic and protein engineering efforts.
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Affiliation(s)
- Bradley Walters Biggs
- Manus Biosynthesis, 1030 Massachusetts
Avenue, Suite 300, Cambridge, Massachusetts 02138, United States
- Department
of Chemical and Biological Engineering (Masters in Biotechnology Program), Northwestern University, Evanston, Illinois 60208, United States
| | - John Edward Rouck
- Department
of Comparative Biosciences, Department of Biochemistry, Department
of Bioengineering, Beckman Institute for Advanced Science and Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Amogh Kambalyal
- Department
of Comparative Biosciences, Department of Biochemistry, Department
of Bioengineering, Beckman Institute for Advanced Science and Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - William Arnold
- Department
of Comparative Biosciences, Department of Biochemistry, Department
of Bioengineering, Beckman Institute for Advanced Science and Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Chin Giaw Lim
- Manus Biosynthesis, 1030 Massachusetts
Avenue, Suite 300, Cambridge, Massachusetts 02138, United States
| | - Marjan De Mey
- Manus Biosynthesis, 1030 Massachusetts
Avenue, Suite 300, Cambridge, Massachusetts 02138, United States
- Centre
for Industrial Biotechnology and Biocatalysis, Ghent University, Coupure
Links 653, B-9000, Ghent, Belgium
| | - Mark O’Neil-Johnson
- Sequoia Sciences, 1912 Innerbelt
Business Center Dr., Saint Louis, Missouri 63114, United States
| | - Courtney M. Starks
- Sequoia Sciences, 1912 Innerbelt
Business Center Dr., Saint Louis, Missouri 63114, United States
| | - Aditi Das
- Department
of Comparative Biosciences, Department of Biochemistry, Department
of Bioengineering, Beckman Institute for Advanced Science and Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Parayil Kumaran Ajikumar
- Manus Biosynthesis, 1030 Massachusetts
Avenue, Suite 300, Cambridge, Massachusetts 02138, United States
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209
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Tian X, Zhang S, Zheng L. First Novozym 435 lipase-catalyzed Morita–Baylis–Hillman reaction in the presence of amides. Enzyme Microb Technol 2016; 84:32-40. [DOI: 10.1016/j.enzmictec.2015.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 12/04/2015] [Accepted: 12/15/2015] [Indexed: 11/29/2022]
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210
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Ferrer M, Bargiela R, Martínez-Martínez M, Mir J, Koch R, Golyshina OV, Golyshin PN. Biodiversity for biocatalysis: A review of the α/β-hydrolase fold superfamily of esterases-lipases discovered in metagenomes. BIOCATAL BIOTRANSFOR 2016. [DOI: 10.3109/10242422.2016.1151416] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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211
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González-Martínez D, Gotor V, Gotor-Fernández V. Application of Deep Eutectic Solvents in Promiscuous Lipase-Catalysed Aldol Reactions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501553] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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212
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Martínez-Núñez MA, Pérez-Rueda E. Do lifestyles influence the presence of promiscuous enzymes in bacteria and Archaea metabolism? ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40508-016-0047-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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213
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Dönertaş HM, Martínez Cuesta S, Rahman SA, Thornton JM. Characterising Complex Enzyme Reaction Data. PLoS One 2016; 11:e0147952. [PMID: 26840640 PMCID: PMC4740462 DOI: 10.1371/journal.pone.0147952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 01/11/2016] [Indexed: 01/05/2023] Open
Abstract
The relationship between enzyme-catalysed reactions and the Enzyme Commission (EC) number, the widely accepted classification scheme used to characterise enzyme activity, is complex and with the rapid increase in our knowledge of the reactions catalysed by enzymes needs revisiting. We present a manual and computational analysis to investigate this complexity and found that almost one-third of all known EC numbers are linked to more than one reaction in the secondary reaction databases (e.g., KEGG). Although this complexity is often resolved by defining generic, alternative and partial reactions, we have also found individual EC numbers with more than one reaction catalysing different types of bond changes. This analysis adds a new dimension to our understanding of enzyme function and might be useful for the accurate annotation of the function of enzymes and to study the changes in enzyme function during evolution.
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Affiliation(s)
- Handan Melike Dönertaş
- European Molecular Biology Laboratory, European Bioinformatics Institute EMBL-EBI, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey
| | - Sergio Martínez Cuesta
- European Molecular Biology Laboratory, European Bioinformatics Institute EMBL-EBI, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Syed Asad Rahman
- European Molecular Biology Laboratory, European Bioinformatics Institute EMBL-EBI, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Janet M. Thornton
- European Molecular Biology Laboratory, European Bioinformatics Institute EMBL-EBI, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
- * E-mail:
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214
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Cuetos A, García-Ramos M, Fischereder EM, Díaz-Rodríguez A, Grogan G, Gotor V, Kroutil W, Lavandera I. Catalytic Promiscuity of Transaminases: Preparation of Enantioenriched β-Fluoroamines by Formal Tandem Hydrodefluorination/Deamination. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510554] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aníbal Cuetos
- York Structural Biology Laboratory, Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Marina García-Ramos
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
| | - Eva-Maria Fischereder
- Department of Chemistry, Organic and Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Alba Díaz-Rodríguez
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
- Medicines Research Centre; GlaxoSmithKline R&D Ltd; Gunnels Wood Road Stevenage Hertfordshire SG1 2NY UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry; University of York; Heslington York YO10 5DD UK
| | - Vicente Gotor
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
| | - Wolfgang Kroutil
- Department of Chemistry, Organic and Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Iván Lavandera
- Departamento de Química Orgánica e Inorgánica; University of Oviedo, Instituto Universitario de Biotecnología de Asturias; C/Julián Clavería 8 33006 Oviedo Spain
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215
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Cuetos A, García-Ramos M, Fischereder EM, Díaz-Rodríguez A, Grogan G, Gotor V, Kroutil W, Lavandera I. Catalytic Promiscuity of Transaminases: Preparation of Enantioenriched β-Fluoroamines by Formal Tandem Hydrodefluorination/Deamination. Angew Chem Int Ed Engl 2016; 55:3144-7. [PMID: 26836037 DOI: 10.1002/anie.201510554] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Indexed: 11/11/2022]
Abstract
Transaminases are valuable enzymes for industrial biocatalysis and enable the preparation of optically pure amines. For these transformations they require either an amine donor (amination of ketones) or an amine acceptor (deamination of racemic amines). Herein transaminases are shown to react with aromatic β-fluoroamines, thus leading to simultaneous enantioselective dehalogenation and deamination to form the corresponding acetophenone derivatives in the absence of an amine acceptor. A series of racemic β-fluoroamines was resolved in a kinetic resolution by tandem hydrodefluorination/deamination, thus giving the corresponding amines with up to greater than 99 % ee. This protocol is the first example of exploiting the catalytic promiscuity of transaminases as a tool for novel transformations.
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Affiliation(s)
- Aníbal Cuetos
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Marina García-Ramos
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain
| | - Eva-Maria Fischereder
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Alba Díaz-Rodríguez
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.,Medicines Research Centre, GlaxoSmithKline R&D Ltd, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Gideon Grogan
- York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Vicente Gotor
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.
| | - Wolfgang Kroutil
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria.
| | - Iván Lavandera
- Departamento de Química Orgánica e Inorgánica, University of Oviedo, Instituto Universitario de Biotecnología de Asturias, C/Julián Clavería 8, 33006, Oviedo, Spain.
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216
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Xue JW, Song J, Manion IC, He YH, Guan Z. Asymmetric Morita–Baylis–Hillman reaction catalyzed by pepsin. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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217
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Enzyme promiscuity in earthworm serine protease: substrate versatility and therapeutic potential. Amino Acids 2016; 48:941-948. [PMID: 26739820 DOI: 10.1007/s00726-015-2162-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 12/18/2015] [Indexed: 10/22/2022]
Abstract
Enzymes are the most versatile molecules in the biological world. These amazing molecules play an integral role in the regulation of various metabolic pathways and physiology subsequently. Promiscuity of an enzyme is the capacity to catalyze additional biochemical reactions besides their native one. Catalytic promiscuity has shown great impact in enzyme engineering for commercial enzyme and therapeutics with natural or engineered catalytic promiscuity. The earthworm serine protease (ESP) is a classic example of enzyme promiscuity and studied for its therapeutic potential over the last few decades. The ESP was reported for several therapeutic properties and fibrinolytic activity has been much explored. ESP, a complex enzyme exists as several isoforms of molecular weight ranging from 14 to 33 kDa. The fibrinolytic capacity of the enzyme has been studied in different species of earthworm and molecular mechanism is quite different from conventional thrombolytics. Cytotoxic and anti-tumor activities of ESP were evaluated using several cancer cell lines. Enzyme had shown tremendous scope in fighting against plant viruses and microbes. ESP is also reported for anti-inflammatory activity and anti-oxidant property. Apart from these, recently, ESP is reported for DNase activity. The daunting challenge for researchers is to understand the molecular mechanism for such diverse properties and possibility of enzyme promiscuity. This review emphasizes molecular mechanism of ESP governing various biochemical reactions. Further, the concept of enzyme promiscuity in ESP towards development of novel enzyme based drugs has been reviewed in this study.
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218
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Tacias-Pascacio VG, Peirce S, Torrestiana-Sanchez B, Yates M, Rosales-Quintero A, Virgen-Ortíz JJ, Fernandez-Lafuente R. Evaluation of different commercial hydrophobic supports for the immobilization of lipases: tuning their stability, activity and specificity. RSC Adv 2016. [DOI: 10.1039/c6ra21730c] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Immobilization of different lipases on diffferent hydrophobic supportsviainterfacial activation has permitted to tunning enzyme performance.
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Affiliation(s)
- Veymar G. Tacias-Pascacio
- Instituto de Catálisis-ICP-CSIC
- 28049 Madrid
- Spain
- Unidad de Investigación y Desarrollo en Alimentos
- Instituto Tecnológico de Veracruz
| | - Sara Peirce
- Instituto de Catálisis-ICP-CSIC
- 28049 Madrid
- Spain
- Dipartimento di Ingegneria Chimica
- dei Materiali e della Produzione Industriale
| | | | - Malcon Yates
- Instituto de Catálisis-ICP-CSIC
- 28049 Madrid
- Spain
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219
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Moura M, Finkle J, Stainbrook S, Greene J, Broadbelt LJ, Tyo KE. Evaluating enzymatic synthesis of small molecule drugs. Metab Eng 2016; 33:138-147. [DOI: 10.1016/j.ymben.2015.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 11/02/2015] [Accepted: 11/25/2015] [Indexed: 10/22/2022]
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220
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Moura M, Pertusi D, Lenzini S, Bhan N, Broadbelt LJ, Tyo KEJ. Characterizing and predicting carboxylic acid reductase activity for diversifying bioaldehyde production. Biotechnol Bioeng 2015; 113:944-52. [PMID: 26479709 DOI: 10.1002/bit.25860] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/11/2015] [Accepted: 10/14/2015] [Indexed: 01/11/2023]
Abstract
Chemicals with aldehyde moieties are useful in the synthesis of polymerization reagents, pharmaceuticals, pesticides, flavors, and fragrances because of their high reactivity. However, chemical synthesis of aldehydes from carboxylic acids has unfavorable thermodynamics and limited specificity. Enzymatically catalyzed reductive bioaldehyde synthesis is an attractive route that overcomes unfavorable thermodynamics by ATP hydrolysis in ambient, aqueous conditions. Carboxylic acid reductases (Cars) are particularly attractive, as only one enzyme is required. We sought to increase the knowledge base of permitted substrates for four Cars. Additionally, the Lys2 enzyme family was found to be mechanistically the same as Cars and two isozymes were also tested. Our results show that Cars prefer molecules where the carboxylic acid is the only polar/charged group. Using this data and other published data, we develop a support vector classifier (SVC) for predicting Car reactivity and make predictions on all carboxylic acid metabolites in iAF1260 and Model SEED.
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Affiliation(s)
- Matthew Moura
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois
| | - Dante Pertusi
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois
| | - Stephen Lenzini
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois
| | - Namita Bhan
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois
| | - Linda J Broadbelt
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois.
| | - Keith E J Tyo
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, 60208, Illinois.
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221
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Bihani M, Bora PP, Verma AK, Baruah R, Boruah HPD, Bez G. PPL catalyzed four-component PASE synthesis of 5-monosubstituted barbiturates: Structure and pharmacological properties. Bioorg Med Chem Lett 2015; 25:5732-6. [PMID: 26546212 DOI: 10.1016/j.bmcl.2015.10.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 10/26/2015] [Accepted: 10/29/2015] [Indexed: 12/18/2022]
Abstract
Enzymatic four-component reactions are very rare although three-component enzymatic promiscuous reactions are widely reported. Herein, we report an efficient PASE protocol for the synthesis of potentially lipophilic zwitterionic 5-monosubstituted barbiturates by four component reaction of mixture of ethyl acetoacetate, hydrazine hydrate, aldehyde and barbituric acid in ethanol at room temperature. Seven different lipases were screened for their promiscuous activity towards the synthesis of 5-monosubstituted barbiturates and the lipase from porcine pancreas (PPL) found to give optimum efficiency. The zwitterionic 5-monosubstituted barbiturates with pyrazolyl ring showed promising pharmacological activity upon screening for antibacterial and apoptotic properties.
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Affiliation(s)
- Manisha Bihani
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India
| | - Pranjal P Bora
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India
| | - Alakesh K Verma
- Department of Molecular Oncology, Cachar Cancer Hospital and Research Centre, Silchar, Assam 788015, India
| | - Reshita Baruah
- Biotechnology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Hari Prasanna Deka Boruah
- Biotechnology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam 785006, India
| | - Ghanashyam Bez
- Department of Chemistry, North Eastern Hill University, Shillong 793022, India.
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222
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Gandomkar S, Fischereder EM, Schrittwieser JH, Wallner S, Habibi Z, Macheroux P, Kroutil W. Enantioselective Oxidative Aerobic Dealkylation of N-Ethyl Benzylisoquinolines by Employing the Berberine Bridge Enzyme. Angew Chem Int Ed Engl 2015; 54:15051-4. [PMID: 26487450 DOI: 10.1002/anie.201507970] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 12/24/2022]
Abstract
N-Dealkylation methods are well described for organic chemistry and the reaction is known in nature and drug metabolism; however, to our knowledge, enantioselective N-dealkylation has not been yet reported. In this study, exclusively the (S)-enantiomers of racemic N-ethyl tertiary amines (1-benzyl-N-ethyl-1,2,3,4-tetrahydroisoquinolines) were dealkylated to give the corresponding secondary (S)-amines in an enantioselective fashion at the expense of molecular oxygen. The reaction is catalyzed by the berberine bridge enzyme, which is known for CC bond formation. The dealkylation was demonstrated on a 100 mg scale and gave optically pure dealkylated products (ee>99 %).
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Affiliation(s)
- Somayyeh Gandomkar
- Institut für Chemie, Organische & Bioorganische Chemie, Universität Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz (Austria).,Department of Pure Chemistry, Faculty of Chemistry, Shahid Beheshti University, G.C. District 1, Evin, Daneshjou Blvd, Tehran (Iran)
| | - Eva-Maria Fischereder
- Institut für Chemie, Organische & Bioorganische Chemie, Universität Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz (Austria)
| | - Joerg H Schrittwieser
- Institut für Chemie, Organische & Bioorganische Chemie, Universität Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz (Austria)
| | - Silvia Wallner
- Institut für Biochemie, Technische Universität Graz, Petersgasse 12, 8010 Graz (Austria)
| | - Zohreh Habibi
- Department of Pure Chemistry, Faculty of Chemistry, Shahid Beheshti University, G.C. District 1, Evin, Daneshjou Blvd, Tehran (Iran)
| | - Peter Macheroux
- Institut für Biochemie, Technische Universität Graz, Petersgasse 12, 8010 Graz (Austria)
| | - Wolfgang Kroutil
- Institut für Chemie, Organische & Bioorganische Chemie, Universität Graz, NAWI Graz, Heinrichstraße 28, 8010 Graz (Austria)
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223
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Gandomkar S, Fischereder EM, Schrittwieser JH, Wallner S, Habibi Z, Macheroux P, Kroutil W. Enantioselektive oxidative aerobe Desalkylierung vonN-Ethylbenzyl- isochinolinen mithilfe des Berberin-Brücken-Enzyms. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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224
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Rauwerdink A, Kazlauskas RJ. How the Same Core Catalytic Machinery Catalyzes 17 Different Reactions: the Serine-Histidine-Aspartate Catalytic Triad of α/β-Hydrolase Fold Enzymes. ACS Catal 2015; 5:6153-6176. [PMID: 28580193 DOI: 10.1021/acscatal.5b01539] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enzymes within a family often catalyze different reactions. In some cases, this variety stems from different catalytic machinery, but in other cases the machinery is identical; nevertheless, the enzymes catalyze different reactions. In this review, we examine the subset of α/β-hydrolase fold enzymes that contain the serine-histidine-aspartate catalytic triad. In spite of having the same protein fold and the same core catalytic machinery, these enzymes catalyze seventeen different reaction mechanisms. The most common reactions are hydrolysis of C-O, C-N and C-C bonds (Enzyme Classification (EC) group 3), but other enzymes are oxidoreductases (EC group 1), acyl transferases (EC group 2), lyases (EC group 4) or isomerases (EC group 5). Hydrolysis reactions often follow the canonical esterase mechanism, but eight variations occur where either the formation or cleavage of the acyl enzyme intermediate differs. The remaining eight mechanisms are lyase-type elimination reactions, which do not have an acyl enzyme intermediate and, in four cases, do not even require the catalytic serine. This diversity of mechanisms from the same catalytic triad stems from the ability of the enzymes to bind different substrates, from the requirements for different chemical steps imposed by these new substrates and, only in about half of the cases, from additional hydrogen bond partners or additional general acids/bases in the active site. This detailed analysis shows that binding differences and non-catalytic residues create new mechanisms and are essential for understanding and designing efficient enzymes.
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Affiliation(s)
- Alissa Rauwerdink
- Department of Biochemistry, Molecular Biology & Biophysics and The Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota 55108, United States
| | - Romas J. Kazlauskas
- Department of Biochemistry, Molecular Biology & Biophysics and The Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota 55108, United States
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225
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Kumar M, Mukherjee J, Sinha M, Kaur P, Sharma S, Gupta MN, Singh TP. Enhancement of stability of a lipase by subjecting to three phase partitioning (TPP): structures of native and TPP-treated lipase from Thermomyces lanuginosa. ACTA ACUST UNITED AC 2015. [DOI: 10.1186/s40508-015-0042-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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226
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Piedrafita G, Keller MA, Ralser M. The Impact of Non-Enzymatic Reactions and Enzyme Promiscuity on Cellular Metabolism during (Oxidative) Stress Conditions. Biomolecules 2015; 5:2101-22. [PMID: 26378592 PMCID: PMC4598790 DOI: 10.3390/biom5032101] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 08/03/2015] [Accepted: 08/31/2015] [Indexed: 11/16/2022] Open
Abstract
Cellular metabolism assembles in a structurally highly conserved, but functionally dynamic system, known as the metabolic network. This network involves highly active, enzyme-catalyzed metabolic pathways that provide the building blocks for cell growth. In parallel, however, chemical reactivity of metabolites and unspecific enzyme function give rise to a number of side products that are not part of canonical metabolic pathways. It is increasingly acknowledged that these molecules are important for the evolution of metabolism, affect metabolic efficiency, and that they play a potential role in human disease—age-related disorders and cancer in particular. In this review we discuss the impact of oxidative and other cellular stressors on the formation of metabolic side products, which originate as a consequence of: (i) chemical reactivity or modification of regular metabolites; (ii) through modifications in substrate specificity of damaged enzymes; and (iii) through altered metabolic flux that protects cells in stress conditions. In particular, oxidative and heat stress conditions are causative of metabolite and enzymatic damage and thus promote the non-canonical metabolic activity of the cells through an increased repertoire of side products. On the basis of selected examples, we discuss the consequences of non-canonical metabolic reactivity on evolution, function and repair of the metabolic network.
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Affiliation(s)
- Gabriel Piedrafita
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Rd, Cambridge CB2 1GA, UK.
| | - Markus A Keller
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Rd, Cambridge CB2 1GA, UK.
| | - Markus Ralser
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Rd, Cambridge CB2 1GA, UK.
- The Francis Crick Institute, Mill Hill Laboratory, The Ridgeway, London NW1 7AA, UK.
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227
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Yao J, Guo H, Chaiprasongsuk M, Zhao N, Chen F, Yang X, Guo H. Substrate-Assisted Catalysis in the Reaction Catalyzed by Salicylic Acid Binding Protein 2 (SABP2), a Potential Mechanism of Substrate Discrimination for Some Promiscuous Enzymes. Biochemistry 2015; 54:5366-75. [PMID: 26244568 DOI: 10.1021/acs.biochem.5b00638] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although one of an enzyme's hallmarks is the high specificity for their natural substrates, substrate promiscuity has been reported more frequently. It is known that promiscuous enzymes generally show different catalytic efficiencies to different substrates, but our understanding of the origin of such differences is still lacking. Here we report the results of quantum mechanical/molecular mechanical simulations and an experimental study of salicylic acid binding protein 2 (SABP2). SABP2 has promiscuous esterase activity toward a series of substrates but shows a high activity toward its natural substrate, methyl salicylate (MeSA). Our results demonstrate that this enzyme may use substrate-assisted catalysis involving the hydroxyl group from MeSA to enhance the activity and achieve substrate discrimination.
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Affiliation(s)
- Jianzhuang Yao
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee , Knoxville, Tennessee 37996, United States
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37830, United States
| | - Haobo Guo
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee , Knoxville, Tennessee 37996, United States
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37830, United States
| | - Minta Chaiprasongsuk
- Department of Plant Sciences, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Nan Zhao
- Department of Plant Sciences, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Feng Chen
- Department of Plant Sciences, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - Xiaohan Yang
- Biosciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Hong Guo
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee , Knoxville, Tennessee 37996, United States
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37830, United States
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228
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Biocatalysis for desymmetrization and resolution of stereocenters beyond the reactive center: How far is far enough? Biotechnol Adv 2015; 33:614-23. [DOI: 10.1016/j.biotechadv.2014.12.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 12/22/2014] [Accepted: 12/22/2014] [Indexed: 11/19/2022]
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229
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Imidazolium based ionic liquid type surfactant improves activity and thermal stability of lipase of Rhizopus oryzae. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.05.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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230
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Martínez-Núñez MA, Rodríguez-Vázquez K, Pérez-Rueda E. The lifestyle of prokaryotic organisms influences the repertoire of promiscuous enzymes. Proteins 2015; 83:1625-31. [PMID: 26109005 DOI: 10.1002/prot.24847] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/01/2015] [Accepted: 06/21/2015] [Indexed: 01/12/2023]
Abstract
The metabolism of microbial organisms and its diversity are partly the result of an adaptation process to the characteristics of the environments that they inhabit. In this work, we analyze the influence of lifestyle on the content of promiscuous enzymes in 761 nonredundant bacterial and archaeal genomes. Promiscuous enzymes were defined as those proteins whose catalytic activities are defined by two or more different Enzyme Commission (E.C.) numbers. The genomes analyzed were categorized into four lifestyles for their exhaustive comparisons: free-living, extremophiles, pathogens, and intracellular. From these analyses we found that free-living organisms have larger genomes and an enrichment of promiscuous enzymes. In contrast, intracellular organisms showed smaller genomes and the lesser proportion of promiscuous enzymes. On the basis of our data, we show that the proportion of promiscuous enzymes in an organism is mainly influenced by the lifestyle, where fluctuating environments promote its emergence. Finally, we evidenced that duplication processes occur preferentially in metabolism of free-living and extremophiles species.
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Affiliation(s)
- Mario Alberto Martínez-Núñez
- Departamento de Ingeniería de Sistemas Computacionales y Automatización, Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Universidad Nacional Autónoma de Mexico, Ciudad Universitaria, México, D.F., México.,Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Katya Rodríguez-Vázquez
- Departamento de Ingeniería de Sistemas Computacionales y Automatización, Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Universidad Nacional Autónoma de Mexico, Ciudad Universitaria, México, D.F., México
| | - Ernesto Pérez-Rueda
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México.,Unidad Multidisciplinaria de Docencia e Investigación, Sisal Facultad de Ciencias, Sisal, Yucatán, UNAM, México
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231
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Xu F, Wu Q, Chen X, Lin X, Wu Q. A Single Lipase-Catalysed One-Pot Protocol Combining Aminolysis Resolution and Aza-Michael Addition: An Easy and Efficient Way to Synthesise β-Amino Acid Esters. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500760] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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232
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Characterization and mechanism insight of accelerated catalytic promiscuity of Sulfolobus tokodaii (ST0779) peptidase for aldol addition reaction. Appl Microbiol Biotechnol 2015; 99:9625-34. [DOI: 10.1007/s00253-015-6758-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/26/2015] [Accepted: 06/08/2015] [Indexed: 01/15/2023]
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233
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López-Iglesias M, Gotor-Fernández V. Recent Advances in Biocatalytic Promiscuity: Hydrolase-Catalyzed Reactions for Nonconventional Transformations. CHEM REC 2015; 15:743-59. [PMID: 26147872 DOI: 10.1002/tcr.201500008] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Indexed: 01/03/2023]
Abstract
Enzymes have emerged in recent decades as ideal catalysts for synthetic transformations under mild reaction conditions. Their capacity to accelerate a myriad of biotransformations with high levels of selectivity and broad substrate specificity including excellent atom economy has led to a current full recognition. The six classes of enzymes (oxidoreductases, transferases, hydrolases, lyases, isomerases and ligases) possess outstanding abilities to perform specific modifications in target molecules. Nevertheless, in the last fifteen years, novel examples have appeared related to nonconventional processes catalyzed by various classes of biocatalysts. Amongst these, hydrolases have received special attention since they display remarkable activities in initially unexpected reactions such as carbon-carbon and carbon-heteroatom bond-formation reactions, oxidative processes and novel hydrolytic transformations. In this review, the main findings in this area will be disclosed, highlighting the catalytic properties of hydrolases not only to catalyze single processes but also multicomponent and tandem nonconventional reactions.
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Affiliation(s)
- María López-Iglesias
- Organic and Inorganic Chemistry Department, Biotechnology Institute of Asturias, Universidad de Oviedo, Avenida Julián Clavería s/n, Oviedo, 33006, Spain
| | - Vicente Gotor-Fernández
- Organic and Inorganic Chemistry Department, Biotechnology Institute of Asturias, Universidad de Oviedo, Avenida Julián Clavería s/n, Oviedo, 33006, Spain
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234
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Seamon KJ, Sun Z, Shlyakhtenko LS, Lyubchenko YL, Stivers JT. SAMHD1 is a single-stranded nucleic acid binding protein with no active site-associated nuclease activity. Nucleic Acids Res 2015; 43:6486-99. [PMID: 26101257 PMCID: PMC4513882 DOI: 10.1093/nar/gkv633] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 06/05/2015] [Indexed: 12/15/2022] Open
Abstract
The HIV-1 restriction factor SAMHD1 is a tetrameric enzyme activated by guanine nucleotides with dNTP triphosphate hydrolase activity (dNTPase). In addition to this established activity, there have been a series of conflicting reports as to whether the enzyme also possesses single-stranded DNA and/or RNA 3′-5′ exonuclease activity. SAMHD1 was purified using three chromatography steps, over which the DNase activity was largely separated from the dNTPase activity, but the RNase activity persisted. Surprisingly, we found that catalytic and nucleotide activator site mutants of SAMHD1 with no dNTPase activity retained the exonuclease activities. Thus, the exonuclease activity cannot be associated with any known dNTP binding site. Monomeric SAMHD1 was found to bind preferentially to single-stranded RNA, while the tetrameric form required for dNTPase action bound weakly. ssRNA binding, but not ssDNA, induces higher-order oligomeric states that are distinct from the tetrameric form that binds dNTPs. We conclude that the trace exonuclease activities detected in SAMHD1 preparations arise from persistent contaminants that co-purify with SAMHD1 and not from the HD active site. An in vivo model is suggested where SAMHD1 alternates between the mutually exclusive functions of ssRNA binding and dNTP hydrolysis depending on dNTP pool levels and the presence of viral ssRNA.
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Affiliation(s)
- Kyle J Seamon
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205-2185, USA
| | - Zhiqiang Sun
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE 68198-6025, USA
| | - Luda S Shlyakhtenko
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE 68198-6025, USA
| | - Yuri L Lyubchenko
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, 986025 Nebraska Medical Center, Omaha, NE 68198-6025, USA
| | - James T Stivers
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205-2185, USA
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235
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236
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Li R, Perez B, Jian H, Gao R, Dong M, Guo Z. Acyl-peptide releasing enzyme from Sulfolobus tokodaii (ST0779) as a novel promiscuous biocatalyst for aldol addition. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.03.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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237
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Hydrogenation of bis-α,β-unsaturated enones mediated by filamentous fungi. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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238
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Sun Y, Zhao H, Wang J, Zhu J, Wu S. Identification and regulation of the catalytic promiscuity of (−)-γ-lactamase from Microbacterium hydrocarbonoxydans. Appl Microbiol Biotechnol 2015; 99:7559-68. [DOI: 10.1007/s00253-015-6503-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 02/17/2015] [Indexed: 02/02/2023]
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239
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Currin A, Swainston N, Day PJ, Kell DB. Synthetic biology for the directed evolution of protein biocatalysts: navigating sequence space intelligently. Chem Soc Rev 2015; 44:1172-239. [PMID: 25503938 PMCID: PMC4349129 DOI: 10.1039/c4cs00351a] [Citation(s) in RCA: 251] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 12/21/2022]
Abstract
The amino acid sequence of a protein affects both its structure and its function. Thus, the ability to modify the sequence, and hence the structure and activity, of individual proteins in a systematic way, opens up many opportunities, both scientifically and (as we focus on here) for exploitation in biocatalysis. Modern methods of synthetic biology, whereby increasingly large sequences of DNA can be synthesised de novo, allow an unprecedented ability to engineer proteins with novel functions. However, the number of possible proteins is far too large to test individually, so we need means for navigating the 'search space' of possible protein sequences efficiently and reliably in order to find desirable activities and other properties. Enzymologists distinguish binding (Kd) and catalytic (kcat) steps. In a similar way, judicious strategies have blended design (for binding, specificity and active site modelling) with the more empirical methods of classical directed evolution (DE) for improving kcat (where natural evolution rarely seeks the highest values), especially with regard to residues distant from the active site and where the functional linkages underpinning enzyme dynamics are both unknown and hard to predict. Epistasis (where the 'best' amino acid at one site depends on that or those at others) is a notable feature of directed evolution. The aim of this review is to highlight some of the approaches that are being developed to allow us to use directed evolution to improve enzyme properties, often dramatically. We note that directed evolution differs in a number of ways from natural evolution, including in particular the available mechanisms and the likely selection pressures. Thus, we stress the opportunities afforded by techniques that enable one to map sequence to (structure and) activity in silico, as an effective means of modelling and exploring protein landscapes. Because known landscapes may be assessed and reasoned about as a whole, simultaneously, this offers opportunities for protein improvement not readily available to natural evolution on rapid timescales. Intelligent landscape navigation, informed by sequence-activity relationships and coupled to the emerging methods of synthetic biology, offers scope for the development of novel biocatalysts that are both highly active and robust.
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Affiliation(s)
- Andrew Currin
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- School of Chemistry , The University of Manchester , Manchester M13 9PL , UK
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
| | - Neil Swainston
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
- School of Computer Science , The University of Manchester , Manchester M13 9PL , UK
| | - Philip J. Day
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
- Faculty of Medical and Human Sciences , The University of Manchester , Manchester M13 9PT , UK
| | - Douglas B. Kell
- Manchester Institute of Biotechnology , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK . ; http://dbkgroup.org/; @dbkell ; Tel: +44 (0)161 306 4492
- School of Chemistry , The University of Manchester , Manchester M13 9PL , UK
- Centre for Synthetic Biology of Fine and Speciality Chemicals (SYNBIOCHEM) , The University of Manchester , 131, Princess St , Manchester M1 7DN , UK
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240
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Li LY, Yang DC, Guan Z, He YH. Pepsin-catalyzed direct asymmetric aldol reactions for the synthesis of vicinal diol compounds. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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241
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Downs DM, Ernst DC. From microbiology to cancer biology: the Rid protein family prevents cellular damage caused by endogenously generated reactive nitrogen species. Mol Microbiol 2015; 96:211-9. [PMID: 25620221 DOI: 10.1111/mmi.12945] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2015] [Indexed: 01/03/2023]
Abstract
The Rid family of proteins is highly conserved and broadly distributed throughout the domains of life. Genetic and biochemical studies, primarily in Salmonella enterica, have defined a role for RidA in responding to endogenously generated reactive metabolites. The data show that 2-aminoacrylate (2AA), a reactive enamine intermediate generated by some pyridoxal 5'-phosphate-dependent enzymes, accumulates in the absence of RidA. The accumulation of 2AA leads to covalent modification and inactivation of several enzymes involved in essential metabolic processes. This review describes the 2AA hydrolyzing activity of RidA and the effect of this biochemical activity on the metabolic network, which impacts organism fitness. The reported activity of RidA and the consequences encountered in vivo when RidA is absent have challenged fundamental assumptions in enzymology, biochemistry and cell metabolism regarding the fate of transiently generated reactive enamine intermediates. The current understanding of RidA in Salmonella and the broad distribution of Rid family proteins provide exciting opportunities for future studies to define metabolic roles of Rid family members from microbes to man.
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Affiliation(s)
- Diana M Downs
- Department of Microbiology, University of Georgia, 120 Cedar Street, Athens, GA, 30602-2605, USA
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242
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Recent developments in enzyme promiscuity for carbon-carbon bond-forming reactions. Curr Opin Chem Biol 2015; 25:115-23. [PMID: 25598537 DOI: 10.1016/j.cbpa.2014.12.020] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 12/10/2014] [Accepted: 12/12/2014] [Indexed: 11/22/2022]
Abstract
Numerous enzymes have been found to catalyze additional and completely different types of reactions relative to the natural activity they evolved for. This phenomenon, called catalytic promiscuity, has proven to be a fruitful guide for the development of novel biocatalysts for organic synthesis purposes. As such, enzymes have been identified with promiscuous catalytic activity for, one or more, eminent types of carbon-carbon bond-forming reactions like aldol couplings, Michael(-type) additions, Mannich reactions, Henry reactions, and Knoevenagel condensations. This review focuses on enzymes that promiscuously catalyze these reaction types and exhibit high enantioselectivities (in case chiral products are obtained).
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243
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Vojcic L, Pitzler C, Körfer G, Jakob F, Ronny Martinez, Maurer KH, Schwaneberg U. Advances in protease engineering for laundry detergents. N Biotechnol 2015; 32:629-34. [PMID: 25579194 DOI: 10.1016/j.nbt.2014.12.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/02/2014] [Accepted: 12/31/2014] [Indexed: 02/03/2023]
Abstract
Proteases are essential ingredients in modern laundry detergents. Over the past 30 years, subtilisin proteases employed in the laundry detergent industry have been engineered by directed evolution and rational design to tailor their properties towards industrial demands. This comprehensive review discusses recent success stories in subtilisin protease engineering. Advances in protease engineering for laundry detergents comprise simultaneous improvement of thermal resistance and activity at low temperatures, a rational strategy to modulate pH profiles, and a general hypothesis for how to increase promiscuous activity towards the production of peroxycarboxylic acids as mild bleaching agents. The three protease engineering campaigns presented provide in-depth analysis of protease properties and have identified principles that can be applied to improve or generate enzyme variants for industrial applications beyond laundry detergents.
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Affiliation(s)
- Ljubica Vojcic
- RWTH Aachen University, Worringerweg 3, D-52074 Aachen, Germany
| | | | | | - Felix Jakob
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, D-52074 Aachen, Germany
| | - Ronny Martinez
- RWTH Aachen University, Worringerweg 3, D-52074 Aachen, Germany; EW-Nutrition GmbH, Enzyme Technology, Nattermannallee 1, D-50829 Köln, Germany
| | | | - Ulrich Schwaneberg
- RWTH Aachen University, Worringerweg 3, D-52074 Aachen, Germany; DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, D-52074 Aachen, Germany.
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244
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Steffen-Munsberg F, Vickers C, Kohls H, Land H, Mallin H, Nobili A, Skalden L, van den Bergh T, Joosten HJ, Berglund P, Höhne M, Bornscheuer UT. Bioinformatic analysis of a PLP-dependent enzyme superfamily suitable for biocatalytic applications. Biotechnol Adv 2015; 33:566-604. [PMID: 25575689 DOI: 10.1016/j.biotechadv.2014.12.012] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 12/16/2014] [Accepted: 12/17/2014] [Indexed: 01/25/2023]
Abstract
In this review we analyse structure/sequence-function relationships for the superfamily of PLP-dependent enzymes with special emphasis on class III transaminases. Amine transaminases are highly important for applications in biocatalysis in the synthesis of chiral amines. In addition, other enzyme activities such as racemases or decarboxylases are also discussed. The substrate scope and the ability to accept chemically different types of substrates are shown to be reflected in conserved patterns of amino acids around the active site. These findings are condensed in a sequence-function matrix, which facilitates annotation and identification of biocatalytically relevant enzymes and protein engineering thereof.
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Affiliation(s)
- Fabian Steffen-Munsberg
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany; KTH Royal Institute of Technology, School of Biotechnology, Division of Industrial Biotechnology, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Clare Vickers
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Hannes Kohls
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany; Protein Biochemistry, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Henrik Land
- KTH Royal Institute of Technology, School of Biotechnology, Division of Industrial Biotechnology, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Hendrik Mallin
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Alberto Nobili
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Lilly Skalden
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany
| | - Tom van den Bergh
- Bio-Prodict, Nieuwe Marktstraat 54E, 6511 AA Nijmegen, The Netherlands
| | - Henk-Jan Joosten
- Bio-Prodict, Nieuwe Marktstraat 54E, 6511 AA Nijmegen, The Netherlands
| | - Per Berglund
- KTH Royal Institute of Technology, School of Biotechnology, Division of Industrial Biotechnology, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Matthias Höhne
- Protein Biochemistry, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany.
| | - Uwe T Bornscheuer
- Dept. of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany.
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245
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Ren H, Li Q, Fang X, Yu D. Exploring substrate promiscuity of chlorophenol hydroxylase against biphenyl derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra16935f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The substrate promiscuity of 2,4-dichlorophenol hydroxylase against biphenyl derivatives was explored. This enzyme may be used as a potentially useful catalyst in the bioremediation of aromatic contaminants.
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Affiliation(s)
- Hejun Ren
- Key Laboratory of Ground Water Resources and Environment of the Ministry of Education
- College of Environment and Resources
- Jilin University
- Changchun
- P. R. China
| | - Qingchao Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Science
- Jilin University
- Changchun
- P. R. China
| | - Xuexun Fang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Science
- Jilin University
- Changchun
- P. R. China
| | - Dahai Yu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Science
- Jilin University
- Changchun
- P. R. China
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246
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He T, Zeng QQ, Yang DC, He YH, Guan Z. Biocatalytic one-pot three-component synthesis of 3,3′-disubstituted oxindoles and spirooxindole pyrans using α-amylase from hog pancreas. RSC Adv 2015. [DOI: 10.1039/c4ra16825a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
α-Amylase from hog pancreas displayed catalytic promiscuity in three-component reaction for the synthesis of 3,3′-disubstituted oxindoles and spirooxindole pyrans.
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Affiliation(s)
- Tao He
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Qing-Qing Zeng
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Da-Cheng Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
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247
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Guan Z, Li LY, He YH. Hydrolase-catalyzed asymmetric carbon–carbon bond formation in organic synthesis. RSC Adv 2015. [DOI: 10.1039/c4ra11462k] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This article reviews the hydrolase-catalyzed asymmetric carbon–carbon bond-forming reactions for the preparation of enantiomerically enriched compounds in organic synthesis.
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Affiliation(s)
- Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Ling-Yu Li
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
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248
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Fernandez-Lopez L, Bartolome-Cabrero R, Rodriguez MD, Dos Santos CS, Rueda N, Fernandez-Lafuente R. Stabilizing effects of cations on lipases depend on the immobilization protocol. RSC Adv 2015. [DOI: 10.1039/c5ra18344h] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effect of an additive on enzyme stability depends on the immobilization strategy.
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Affiliation(s)
| | | | | | | | - Nazzoly Rueda
- Departamento de Biocatálisis
- Instituto de Catálisis-CSIC
- Campus UAM-CSIC
- Madrid
- Spain
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249
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Arora B, Mukherjee J, Gupta MN. Enzyme promiscuity: using the dark side of enzyme specificity in white biotechnology. ACTA ACUST UNITED AC 2014. [DOI: 10.1186/s40508-014-0025-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract
Enzyme promiscuity can be classified into substrate promiscuity, condition promiscuity and catalytic promiscuity. Enzyme promiscuity results in far larger ranges of organic compounds which can be obtained by biocatalysis. While early examples mostly involved use of lipases, more recent literature shows that catalytic promiscuity occurs more widely and many other classes of enzymes can be used to obtain diverse kinds of molecules. This is of immense relevance in the context of white biotechnology as enzyme catalysed reactions use greener conditions.
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250
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Pyranose dehydrogenase ligand promiscuity: a generalized approach to simulate monosaccharide solvation, binding, and product formation. PLoS Comput Biol 2014; 10:e1003995. [PMID: 25500811 PMCID: PMC4263366 DOI: 10.1371/journal.pcbi.1003995] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 10/13/2014] [Indexed: 11/19/2022] Open
Abstract
The flavoenzyme pyranose dehydrogenase (PDH) from the litter decomposing fungus Agaricus meleagris oxidizes many different carbohydrates occurring during lignin degradation. This promiscuous substrate specificity makes PDH a promising catalyst for bioelectrochemical applications. A generalized approach to simulate all 32 possible aldohexopyranoses in the course of one or a few molecular dynamics (MD) simulations is reported. Free energy calculations according to the one-step perturbation (OSP) method revealed the solvation free energies (ΔGsolv) of all 32 aldohexopyranoses in water, which have not yet been reported in the literature. The free energy difference between β- and α-anomers (ΔGβ-α) of all d-stereoisomers in water were compared to experimental values with a good agreement. Moreover, the free-energy differences (ΔG) of the 32 stereoisomers bound to PDH in two different poses were calculated from MD simulations. The relative binding free energies (ΔΔGbind) were calculated and, where available, compared to experimental values, approximated from Km values. The agreement was very good for one of the poses, in which the sugars are positioned in the active site for oxidation at C1 or C2. Distance analysis between hydrogens of the monosaccharide and the reactive N5-atom of the flavin adenine dinucleotide (FAD) revealed that oxidation is possible at HC1 or HC2 for pose A, and at HC3 or HC4 for pose B. Experimentally detected oxidation products could be rationalized for the majority of monosaccharides by combining ΔΔGbind and a reweighted distance analysis. Furthermore, several oxidation products were predicted for sugars that have not yet been tested experimentally, directing further analyses. This study rationalizes the relationship between binding free energies and substrate promiscuity in PDH, providing novel insights for its applicability in bioelectrochemistry. The results suggest that a similar approach could be applied to study promiscuity of other enzymes. Generally, enzymes are perceived as being specific for both their substrates and the reaction they catalyze. This standard paradigm started to shift and currently enzyme promiscuity towards various substrates is perceived rather as the rule than the exception. Enzyme promiscuity seems to be vital for proteins to acquire new functions, and therefore for evolution itself. The driving forces for promiscuity are manifold and consequently challenging to study. Binding free energies, which can be calculated from computer simulations, represent a convenient measure for them. Here, we investigate the binding free energies between the enzyme pyranose dehydrogenase (PDH) and a sugar-substrate by computational means. PDH has an extraordinarily promiscuous substrate-specificity, making it interesting for e.g. bioelectrochemical applications. By introducing modifications to the sugar-structure used for the molecular dynamics simulations, we could simultaneously study all 32 possible aldohexopyranoses from a single simulation. This saves costly computational resources and time for setting up and analyzing the simulations. We could nicely reproduce experimental results and predict so far undetected sugar-oxidation products, directing further experiments. This study gives novel insights into PDH's substrate promiscuity and the enzyme's applicability. A similar approach could be applied to study the promiscuity of other enzymes.
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