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Misson M, Du X, Jin B, Zhang H. Dendrimer-like nanoparticles based β-galactosidase assembly for enhancing its selectivity toward transgalactosylation. Enzyme Microb Technol 2016; 84:68-77. [DOI: 10.1016/j.enzmictec.2015.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 12/16/2015] [Accepted: 12/17/2015] [Indexed: 01/16/2023]
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103
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Misson M, Dai S, Jin B, Chen BH, Zhang H. Manipulation of nanofiber-based β-galactosidase nanoenvironment for enhancement of galacto-oligosaccharide production. J Biotechnol 2016; 222:56-64. [PMID: 26876609 DOI: 10.1016/j.jbiotec.2016.02.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/05/2016] [Accepted: 02/08/2016] [Indexed: 12/23/2022]
Abstract
The nanoenvironment of nanobiocatalysts, such as local hydrophobicity, pH and charge density, plays a significant role in optimizing the enzymatic selectivity and specificity. In this study, Kluyveromyces lactis β-galactosidase (Gal) was assembled onto polystyrene nanofibers (PSNFs) to form PSNF-Gal nanobiocatalysts. We proposed that local hydrophobicity on the nanofiber surface could expel water molecules so that the transgalactosylation would be preferable over hydrolysis during the bioconversion of lactose, thus improve the galacto-oligosaccharides (GOS) yield. PSNFs were fabricated by electro-spinning and the operational parameters were optimized to obtain the nanofibers with uniform size and ordered alignment. The resulting nanofibers were functionalized for enzyme immobilization through a chemical oxidation method. The functionalized PSNF improved the enzyme adsorption capacity up to 3100 mg/g nanofiber as well as enhanced the enzyme stability with 80% of its original activity. Importantly, the functionalized PSNF-Gal significantly improved the GOS yield and the production rate was up to 110 g/l/h in comparison with 37 g/l/h by free β-galactosidase. Our research findings demonstrate that the localized nanoenvironment of the PSNF-Gal nanobiocatalysts favour transgalactosylation over hydrolysis in lactose bioconversion.
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Affiliation(s)
- Mailin Misson
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia; Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Sheng Dai
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia
| | - Bo Jin
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia
| | - Bing H Chen
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hu Zhang
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia.
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104
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Catalytic activity and structural stability of three different Bacillus enzymes in water/organic co-solvent mixtures. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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105
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Abstract
AbstractThe field of nanobiocatalysis has experienced a rapid growth due to recent advances in nanotechnology. However, biocatalytic processes are often limited by the lack of stability of the enzymes and their short lifetime. Therefore, immobilization is key to the successful implementation of industrial processes based on enzymes. Immobilization of enzymes on functionalized nanostructured materials could give higher stability to nanobiocatalysts while maintaining free enzyme activity and easy recyclability under various conditions. This review will discuss recent developments in nanobiocatalysis to improve the stability of the enzyme using various nanostructured materials such as mesoporous materials, nanofibers, nanoparticles, nanotubes, and individual nanoparticles enzymes. Also, this review summarizes the recent evolution of nanostructured biocatalysts with an emphasis on those formed with polymers. Based on the synthetic procedures used, established methods fall into two important categories: “grafting onto” and “grafting from”. The fundamentals of each method in enhancing enzyme stability and the use of these new nanobiocatalysts as tools for different applications in different areas are discussed.
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106
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Redesigning alcohol dehydrogenases/reductases for more efficient biosynthesis of enantiopure isomers. Biotechnol Adv 2015; 33:1671-84. [DOI: 10.1016/j.biotechadv.2015.08.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 08/11/2015] [Accepted: 08/12/2015] [Indexed: 11/20/2022]
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107
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Choi JM, Han SS, Kim HS. Industrial applications of enzyme biocatalysis: Current status and future aspects. Biotechnol Adv 2015; 33:1443-54. [DOI: 10.1016/j.biotechadv.2015.02.014] [Citation(s) in RCA: 524] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 02/25/2015] [Accepted: 02/27/2015] [Indexed: 01/10/2023]
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108
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Sklyarenko AV, El’darov MA, Kurochkina VB, Yarotsky SV. Enzymatic synthesis of β-lactam acids (review). APPL BIOCHEM MICRO+ 2015. [DOI: 10.1134/s0003683815060150] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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109
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Wang ZY, Bi YH, Yang RL, Duan ZQ, Nie LH, Li XQ, Zong MH, Wu J. The halo-substituent effect on Pseudomonas cepacia lipase-mediated regioselective acylation of nucleosides: A comparative investigation. J Biotechnol 2015; 212:153-8. [PMID: 26325198 DOI: 10.1016/j.jbiotec.2015.08.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 08/27/2015] [Accepted: 08/28/2015] [Indexed: 11/19/2022]
Abstract
In this work, comparative experiments were explored to investigate the substrate specificity of Pseudomonas cepacia lipase in regioselective acylation of nucleosides carrying various substituents (such as the H, F, Cl, Br, I) at 2'- and 5-positions. Experimental data indicated that the catalytic performance of the enzyme depended very much on the halo-substituents in nucleosides. The increased bulk of 2'-substituents in ribose moiety of the nucleoside might contribute to the improved 3'-regioselectivity (90-98%, nucleosides a-d) in enzymatic decanoylation, while the enhancement of regioselectivity (93-99%) in 3'-O-acylated nucleosides e-h could be attributable to the increasing hydrophobicity of the halogen atoms at 5-positions. With regard to the chain-length selectivity, P. cepacia lipase displayed the highest 3'-regioselectivity toward the longer chain (C14) as compared to shorter (C6 and C10) ones. The position, orientation and property of the substituent, specific structure of the lipase's active site, and acyl structure could account for the diverse results.
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Affiliation(s)
- Zhao-Yu Wang
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China; Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huai'an 223005, PR China.
| | - Yan-Hong Bi
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China
| | - Rong-Ling Yang
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China
| | - Zhang-Qun Duan
- Academy of State Administration of Grain, Beijing 100037, PR China
| | - Ling-Hong Nie
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China
| | - Xiang-Qian Li
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China; Jiangsu Provincial Engineering Laboratory for Biomass Conversion and Process Integration, Huai'an 223005, PR China
| | - Min-Hua Zong
- Lab of Applied Biocatalysis, South China University of Technology, Guangzhou 510640, PR China
| | - Jie Wu
- School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huai'an 223003, PR China
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Balcão VM, Vila MMDC. Structural and functional stabilization of protein entities: state-of-the-art. Adv Drug Deliv Rev 2015; 93:25-41. [PMID: 25312675 DOI: 10.1016/j.addr.2014.10.005] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 08/03/2014] [Accepted: 10/01/2014] [Indexed: 12/13/2022]
Abstract
Within the context of biomedicine and pharmaceutical sciences, the issue of (therapeutic) protein stabilization assumes particular relevance. Stabilization of protein and protein-like molecules translates into preservation of both structure and functionality during storage and/or targeting, and such stabilization is mostly attained through establishment of a thermodynamic equilibrium with the (micro)environment. The basic thermodynamic principles that govern protein structural transitions and the interactions of the protein molecule with its (micro)environment are, therefore, tackled in a systematic fashion. Highlights are given to the major classes of (bio)therapeutic molecules, viz. enzymes, recombinant proteins, (macro)peptides, (monoclonal) antibodies and bacteriophages. Modification of the microenvironment of the biomolecule via multipoint covalent attachment onto a solid surface followed by hydrophilic polymer co-immobilization, or physical containment within nanocarriers, are some of the (latest) strategies discussed aiming at full structural and functional stabilization of said biomolecules.
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Affiliation(s)
- Victor M Balcão
- LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)(2) - intelligent biosensing and biomolecule stabilization research group, University of Sorocaba, Sorocaba, SP, Brazil; CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal.
| | - Marta M D C Vila
- LaBNUS - Biomaterials and Nanotechnology Laboratory, i(bs)(2) - intelligent biosensing and biomolecule stabilization research group, University of Sorocaba, Sorocaba, SP, Brazil
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Zhang WW, Jia JQ, Wang N, Hu CL, Yang SY, Yu XQ. Improved activity of lipase immobilized in microemulsion-based organogels for ( R, S)-ketoprofen ester resolution: Long-term stability and reusability. ACTA ACUST UNITED AC 2015. [PMID: 28626708 PMCID: PMC5466060 DOI: 10.1016/j.btre.2015.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Microemulsion-based organogels (MBGs) were effectively employed for the immobilization of four commonly used lipases. During the asymmetric hydrolysis of ketoprofen vinyl ester at 30 °C for 24 h, lipase from Rhizomucor miehei and Mucor javanicus immobilized in microemulsion-based organogels (RML MBGs and MJL MBGs) maintained good enantioselectivities (eep were 86.2% and 99.2%, respectively), and their activities increased 12.8-fold and 7.8-fold, respectively, compared with their free forms. They gave higher yields compared with other lipase MBGs and exhibited better enantioselectivity than commercial immobilized lipases. Immobilization considerably increased the tolerance to organic solvents and high temperature. Both MJL MBGs and RML MBGs showed excellent reusability during 30 cycles of repeated 24 h reactions at 30 °C (over 40 days). The system maintained yields of greater than 50%, while the ees values of RML MBGs and MJL MBGs remained nearly constant at 95% and 88%, respectively.
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Affiliation(s)
- Wei-Wei Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Jun-Qi Jia
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Na Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Cheng-Li Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Sheng-Yong Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610064, PR China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
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113
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Tandjaoui N, Tassist A, Abouseoud M, Couvert A, Amrane A. Preparation and characterization of cross-linked enzyme aggregates (CLEAs) of Brassica rapa peroxidase. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2014.12.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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114
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Bosio VE, Islan GA, Martínez YN, Durán N, Castro GR. Nanodevices for the immobilization of therapeutic enzymes. Crit Rev Biotechnol 2015; 36:447-64. [PMID: 25641329 DOI: 10.3109/07388551.2014.990414] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Therapeutic enzymes are one of the most promising applications of this century in the field of pharmaceutics. Biocatalyst properties can be improved by enzyme immobilization on nano-objects, thereby increasing stability and reusability and also enhancing the targeting to specific tissues and cells. Therapeutic biocatalyst-nanodevice complexes will provide new tools for the diagnosis and treatment of old and newly emerging pathologies. Among the advantages of this approach are the wide span and diverse range of possible materials and biocatalysts that promise to make the matrix-enzyme combination a unique modality for therapeutic delivery. This review focuses on the most significant techniques and nanomaterials used for enzyme immobilization such as metallic superparamagnetic, silica, and polymeric and single-enzyme nanoparticles. Finally, a review of the application of these nanodevices to different pathologies and modes of administration is presented. In short, since therapeutic enzymes constitute a highly promising alternative for treating a variety of pathologies more effectively, this review is aimed at providing the comprehensive summary needed to understand and improve this burgeoning area.
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Affiliation(s)
- Valeria E Bosio
- a Nanobiomaterials Laboratory , Applied Biotechnology Institute (CINDEFI, UNLP-CONICET CCT La Plata) - School of Sciences, Universidad Nacional de La Plata , La Plata , Argentina
| | - Germán A Islan
- a Nanobiomaterials Laboratory , Applied Biotechnology Institute (CINDEFI, UNLP-CONICET CCT La Plata) - School of Sciences, Universidad Nacional de La Plata , La Plata , Argentina
| | - Yanina N Martínez
- a Nanobiomaterials Laboratory , Applied Biotechnology Institute (CINDEFI, UNLP-CONICET CCT La Plata) - School of Sciences, Universidad Nacional de La Plata , La Plata , Argentina
| | - Nelson Durán
- b Center of Natural and Human Science, Universidade Federal do ABC , Santo André , SP , Brazil , and.,c Institute of Chemistry, Biological Chemistry, Laboratory, Universidade Estadual de Campinas, UNICAMP , Campinas , SP , Brazil
| | - Guillermo R Castro
- a Nanobiomaterials Laboratory , Applied Biotechnology Institute (CINDEFI, UNLP-CONICET CCT La Plata) - School of Sciences, Universidad Nacional de La Plata , La Plata , Argentina
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115
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Misson M, Zhang H, Jin B. Nanobiocatalyst advancements and bioprocessing applications. J R Soc Interface 2015; 12:20140891. [PMID: 25392397 PMCID: PMC4277080 DOI: 10.1098/rsif.2014.0891] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/20/2014] [Indexed: 11/12/2022] Open
Abstract
The nanobiocatalyst (NBC) is an emerging innovation that synergistically integrates advanced nanotechnology with biotechnology and promises exciting advantages for improving enzyme activity, stability, capability and engineering performances in bioprocessing applications. NBCs are fabricated by immobilizing enzymes with functional nanomaterials as enzyme carriers or containers. In this paper, we review the recent developments of novel nanocarriers/nanocontainers with advanced hierarchical porous structures for retaining enzymes, such as nanofibres (NFs), mesoporous nanocarriers and nanocages. Strategies for immobilizing enzymes onto nanocarriers made from polymers, silicas, carbons and metals by physical adsorption, covalent binding, cross-linking or specific ligand spacers are discussed. The resulting NBCs are critically evaluated in terms of their bioprocessing performances. Excellent performances are demonstrated through enhanced NBC catalytic activity and stability due to conformational changes upon immobilization and localized nanoenvironments, and NBC reutilization by assembling magnetic nanoparticles into NBCs to defray the high operational costs associated with enzyme production and nanocarrier synthesis. We also highlight several challenges associated with the NBC-driven bioprocess applications, including the maturation of large-scale nanocarrier synthesis, design and development of bioreactors to accommodate NBCs, and long-term operations of NBCs. We suggest these challenges are to be addressed through joint collaboration of chemists, engineers and material scientists. Finally, we have demonstrated the great potential of NBCs in manufacturing bioprocesses in the near future through successful laboratory trials of NBCs in carbohydrate hydrolysis, biofuel production and biotransformation.
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Affiliation(s)
- Mailin Misson
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Hu Zhang
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia
| | - Bo Jin
- School of Chemical Engineering, The University of Adelaide, Adelaide, South A, ustralia 5000, Australia
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Narancic T, Davis R, Nikodinovic-Runic J, O’ Connor KE. Recent developments in biocatalysis beyond the laboratory. Biotechnol Lett 2015; 37:943-54. [DOI: 10.1007/s10529-014-1762-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 12/16/2014] [Indexed: 11/27/2022]
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117
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Gao J, Feng K, Li H, Jiang Y, Zhou L. Immobilized lipase on porous ceramic monoliths for the production of sugar-derived oil gelling agent. RSC Adv 2015. [DOI: 10.1039/c5ra10570f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Lipase from Candida sp. 99-125 was immobilized on porous ceramic monoliths for the production of sugar-derived oil gelling agent.
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Affiliation(s)
- Jing Gao
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Kai Feng
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Hongwu Li
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Yanjun Jiang
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Liya Zhou
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
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118
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Lei Z, Liu X, Ma L, Liu D, Zhang H, Wang Z. Spheres-on-sphere silica microspheres as matrix for horseradish peroxidase immobilization and detection of hydrogen peroxide. RSC Adv 2015. [DOI: 10.1039/c5ra03755g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Spheres-on-sphere (SOS) silica microspheres are employed as a matrix for horseradish peroxidase (HRP) immobilization. The SOS-COOH-HRP shows excellent catalytic performance and stability.
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Affiliation(s)
- Zhen Lei
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Xia Liu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Lina Ma
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Dianjun Liu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
| | - Haifei Zhang
- Department of Chemistry
- University of Liverpool
- Liverpool
- UK
| | - Zhenxin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- P. R. China
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119
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Jovanovic P, Jeremic S, Djokic L, Savic V, Radivojevic J, Maslak V, Ivkovic B, Vasiljevic B, Nikodinovic-Runic J. Chemoselective biocatalytic reduction of conjugated nitroalkenes: new application for an Escherichia coli BL21(DE3) expression strain. Enzyme Microb Technol 2014; 60:16-23. [PMID: 24835095 DOI: 10.1016/j.enzmictec.2014.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/26/2014] [Accepted: 03/20/2014] [Indexed: 11/29/2022]
Abstract
Chemoselective reduction of activated carbon-carbon double bond in conjugated nitroalkenes was achieved using Escherichia coli BL21(DE3) whole cells. Nine different substrates have been used furnishing the reduced products in moderate to good yields. 1-Nitro-4-phenyl-1,3-butadiene and (2-nitro-1-propenyl)benzene were successfully biotransformed with corresponding product yields of 54% and 45% respectively. Using this simple and environmentally friendly system 2-(2-nitropropyl)pyridine and 2-(2-nitropropyl)naphthalene were synthesized and characterized for the first time. High substrate conversion efficiency was coupled with low enantioselectivity, however 29% enantiomeric excess was detected in the case of 2-(2-nitropropyl)pyridine. It was shown that electronic properties of the aromatic ring, which affected polarity of the double bond, were not highly influential factors in the reduction process, but the presence of the nitro functionality was essential for the reaction to proceed. 1-Phenyl-4-nitro-1,3-butadiene could not be biotransformed by whole cells of Pseudomonas putida KT2440 or Bacillus subtilis 168 while it was successfully reduced by E. coli DH5α but with lower efficiency in comparison to E. coli BL21(DE3). Knockout mutant affected in nemA gene coding for N-ethylmaleimide reductase (BL21ΔnemA) could still catalyze bioreductions suggesting multiple active reductases within E. coli BL21(DE3) biocatalyst. The described biocatalytic reduction of substituted nitroalkenes provides an efficient route for the preparation of the corresponding nitroalkanes and introduces the new application of the strain traditionally utilized for recombinant protein expression.
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Affiliation(s)
- Predrag Jovanovic
- Department of Organic Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Sanja Jeremic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia
| | - Lidija Djokic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia
| | - Vladimir Savic
- Department of Organic Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Jelena Radivojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia; Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia
| | - Veselin Maslak
- Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia
| | - Branka Ivkovic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Branka Vasiljevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia.
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He YC, Yang ZX, Zhang DP, Tao ZC, Chen C, Chen YT, Guo F, Xu JH, Huang L, Chen RJ, Ma XF. Biosynthesis of ethyl (S)-4-chloro-3-hydroxybutanoate by NADH-dependent reductase from E. coli CCZU-Y10 discovered by genome data mining using mannitol as cosubstrate. Appl Biochem Biotechnol 2014; 173:2042-53. [PMID: 24880894 DOI: 10.1007/s12010-014-1001-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 05/23/2014] [Indexed: 12/22/2022]
Abstract
The reductase (PgCR) from recombinant Escherichia coli CCZU-Y10 displayed high reductase activity and excellent stereoselectivity for the reduction of ethyl 4-chloro-3-oxobutanoate (COBE) into ethyl (S)-4-chloro-3-hydroxybutanoate ((S)-CHBE). To efficiently synthesize (S)-CHBE (>99 % enantiomeric excess (ee)), the highly stereoselective bioreduction of COBE into (S)-CHBE with the whole cells of E. coli CCZU-Y10 was successfully demonstrated in a dibutyl phthalate-water biphasic system. The appropriate ratio of the organic phase to water phase was 1:1 (v/v). The optimum reaction temperature, reaction pH, cosubstrate, NAD(+), and cell dosage of the biotransformation of 100 mM COBE in this biphasic system were 30 °C, 7.0, mannitol (2.5 mmol/mmol COBE), 0.1 μmol/(mmol COBE), and 0.1 g (wet weight)/mL, respectively. Moreover, COBE at a high concentration of (1,000 mM) could be asymmetrically reduced to (S)-CHBE in a high yield (99.0 %) and high enantiometric excess value (>99 % ee). Significantly, E. coli CCZU-Y10 shows high potential in the industrial production of (S)-CHBE (>99 % ee).
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Affiliation(s)
- Yu-Cai He
- Laboratory of Biocatalysis and Bioprocessing, College of Pharmaceutical Engineering and Life Sciences, Changzhou University, Changzhou, 213164, People's Republic of China,
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121
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Immobilized Lipase from Candida sp. 99–125 on Hydrophobic Silicate: Characterization and Applications. Appl Biochem Biotechnol 2014; 173:1802-14. [DOI: 10.1007/s12010-014-0967-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 05/16/2014] [Indexed: 01/29/2023]
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122
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Martínez YN, Cavello I, Cavalitto S, Illanes A, Castro GR. Studies on PVA pectin cryogels containing crosslinked enzyme aggregates of keratinase. Colloids Surf B Biointerfaces 2014; 117:284-9. [DOI: 10.1016/j.colsurfb.2014.02.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 02/22/2014] [Accepted: 02/27/2014] [Indexed: 10/25/2022]
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123
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Abstract
Porous CaCO₃ vaterite microparticles have been introduced a decade ago as sacrificial cores and becoming nowadays as one of the most popular templates to encapsulate bioactive molecules. This is due to the following beneficial features: i) mild decomposition conditions, ii) highly developed surface area, and iii) controlled size as well as easy and chip preparation. Such properties allow one to template and design particles with well tuned material properties in terms of composition, structure, functionality -- the parameters crucially important for bioapplications. This review presents a recent progress in utilizing the CaCO₃ cores for the assembly of micrometer-sized beads and capsules with encapsulated both small drugs and large biomacromolecules. Bioapplications of all the particles for drug delivery, biotechnology, and biosensing as well as future perspectives for templating are addressed.
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Affiliation(s)
- Dmitry Volodkin
- Fraunhofer Institute for Biomedical Engineering (IBMT), Am Muehlenberg 13, 14476 Potsdam-Golm, Germany.
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124
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Jiang Y, Cui C, Zhou L, He Y, Gao J. Preparation and Characterization of Porous Horseradish Peroxidase Microspheres for the Removal of Phenolic Compound and Dye. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500302p] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanjun Jiang
- School of Chemical
Engineering
and Technology, Hebei University of Technology, Tianjin 300130, P.R. China
| | - Cuicui Cui
- School of Chemical
Engineering
and Technology, Hebei University of Technology, Tianjin 300130, P.R. China
| | - Liya Zhou
- School of Chemical
Engineering
and Technology, Hebei University of Technology, Tianjin 300130, P.R. China
| | - Ying He
- School of Chemical
Engineering
and Technology, Hebei University of Technology, Tianjin 300130, P.R. China
| | - Jing Gao
- School of Chemical
Engineering
and Technology, Hebei University of Technology, Tianjin 300130, P.R. China
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125
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Bidmanova S, Hrdlickova E, Jaros J, Ilkovics L, Hampl A, Damborsky J, Prokop Z. Microscopic monitoring provides information on structure and properties during biocatalyst immobilization. Biotechnol J 2014; 9:852-60. [DOI: 10.1002/biot.201300049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 01/31/2014] [Accepted: 03/14/2014] [Indexed: 12/31/2022]
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126
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127
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Wachtmeister J, Jakoblinnert A, Kulig J, Offermann H, Rother D. Whole-Cell Teabag Catalysis for the Modularisation of Synthetic Enzyme Cascades in Micro-Aqueous Systems. ChemCatChem 2014. [DOI: 10.1002/cctc.201300880] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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128
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Kaleem I, Shen H, Lv B, Wei B, Rasool A, Li C. Efficient biosynthesis of glycyrrhetic acid 3-O-mono-β-d-glucuronide (GAMG) in water-miscible ionic liquid by immobilized whole cells of Penicillium purpurogenum Li-3 in alginate gel. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2013.10.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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129
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Mogharabi M, Faramarzi MA. Laccase and Laccase-Mediated Systems in the Synthesis of Organic Compounds. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300960] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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130
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Villalonga ML, Díez P, Sánchez A, Gamella M, Pingarrón JM, Villalonga R. Neoglycoenzymes. Chem Rev 2014; 114:4868-917. [DOI: 10.1021/cr400290x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Paula Díez
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - Alfredo Sánchez
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - María Gamella
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - José M. Pingarrón
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
- IMDEA
Nanoscience, Cantoblanco Universitary City, 28049-Madrid, Spain
| | - Reynaldo Villalonga
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
- IMDEA
Nanoscience, Cantoblanco Universitary City, 28049-Madrid, Spain
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131
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Cross-linked α-l-rhamnosidase aggregates with potential application in food industry. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2157-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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132
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Abstract
Over the past three decades, a powerful array of techniques has been developed for expressing heterologous proteins and saccharides on the surface of bacteria. Surface-engineered bacteria, in turn, have proven useful in a variety of settings, including high-throughput screening, biofuel production, and vaccinology. In this chapter, we provide a comprehensive review of methods for displaying polypeptides and sugars on the bacterial cell surface, and discuss the many innovative applications these methods have found to date. While already an important biotechnological tool, we believe bacterial surface display may be further improved through integration with emerging methodology in other fields, such as protein engineering and synthetic chemistry. Ultimately, we envision bacterial display becoming a multidisciplinary platform with the potential to transform basic and applied research in bacteriology, biotechnology, and biomedicine.
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133
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Grulich M, Štěpánek V, Kyslík P. Perspectives and industrial potential of PGA selectivity and promiscuity. Biotechnol Adv 2013; 31:1458-72. [DOI: 10.1016/j.biotechadv.2013.07.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 07/02/2013] [Accepted: 07/06/2013] [Indexed: 11/26/2022]
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134
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Urrutia P, Bernal C, Escobar S, Santa C, Mesa M, Wilson L, Illanes A. Influence of chitosan derivatization on its physicochemical characteristics and its use as enzyme support. J Appl Polym Sci 2013. [DOI: 10.1002/app.40171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Paulina Urrutia
- Escuela de Ingeniería Bioquímica; Pontificia Universidad Católica de Valparaíso; Avenida Brasil 2147 Valparaíso Chile
| | - Claudia Bernal
- Escuela de Ingeniería Bioquímica; Pontificia Universidad Católica de Valparaíso; Avenida Brasil 2147 Valparaíso Chile
- Grupo Ciencia de los Materiales; Instituto de Química; Universidad de Antioquia. Medellin; Colombia
| | - Sindy Escobar
- Grupo Ciencia de los Materiales; Instituto de Química; Universidad de Antioquia. Medellin; Colombia
| | - Cristiam Santa
- Grupo Ciencia de los Materiales; Instituto de Química; Universidad de Antioquia. Medellin; Colombia
| | - Monica Mesa
- Grupo Ciencia de los Materiales; Instituto de Química; Universidad de Antioquia. Medellin; Colombia
| | - Lorena Wilson
- Escuela de Ingeniería Bioquímica; Pontificia Universidad Católica de Valparaíso; Avenida Brasil 2147 Valparaíso Chile
| | - Andres Illanes
- Escuela de Ingeniería Bioquímica; Pontificia Universidad Católica de Valparaíso; Avenida Brasil 2147 Valparaíso Chile
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135
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Stepankova V, Bidmanova S, Koudelakova T, Prokop Z, Chaloupkova R, Damborsky J. Strategies for Stabilization of Enzymes in Organic Solvents. ACS Catal 2013. [DOI: 10.1021/cs400684x] [Citation(s) in RCA: 415] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Veronika Stepankova
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s University Hospital Brno, Pekarska 53, 656 91 Brno, Czech Republic
- Enantis,
Ltd., Palackeho trida
1802/129, 612 00 Brno, Czech Republic
| | - Sarka Bidmanova
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Tana Koudelakova
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Zbynek Prokop
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- Enantis,
Ltd., Palackeho trida
1802/129, 612 00 Brno, Czech Republic
| | - Radka Chaloupkova
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Jiri Damborsky
- Loschmidt
Laboratories, Department of Experimental Biology and Research Centre
for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- International
Clinical Research Center, St. Anne’s University Hospital Brno, Pekarska 53, 656 91 Brno, Czech Republic
- Enantis,
Ltd., Palackeho trida
1802/129, 612 00 Brno, Czech Republic
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136
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Kim D, Yoo M, Choi KY, Kang BS, Kim E. Characterization and engineering of an o-xylene dioxygenase for biocatalytic applications. BIORESOURCE TECHNOLOGY 2013; 145:123-127. [PMID: 23562567 DOI: 10.1016/j.biortech.2013.03.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 03/03/2013] [Accepted: 03/07/2013] [Indexed: 06/02/2023]
Abstract
Depending on the size and position of the substituent groups on the aromatic ring, the o-xylene dioxygenase from Rhodococcus sp. strain DK17 possesses the unique ability to perform distinct regioselective hydroxylations via differential positioning of substrates within the active site. The substrate-binding pocket of the DK17 o-xylene dioxygenase is large enough to accommodate bicyclics and can be divided into three regions (distal, central, and proximal), and hydrophobic interactions in the distal position are important for substrate binding. Current molecular and functional knowledge contribute insights into how to engineer this enzyme to create tailor-made properties for chemoenzymatic syntheses.
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Affiliation(s)
- Dockyu Kim
- Department of Systems Biology, Yonsei University, Seoul 120-749, Republic of Korea
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137
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Choi HJ, Seo JY, Hwang SM, Lee YI, Jeong YK, Moon JY, Joo WH. Isolation and characterization of BTEX tolerant and degrading Pseudomonas putida BCNU 106. BIOTECHNOL BIOPROC E 2013. [DOI: 10.1007/s12257-012-0860-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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138
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Alvarenga AE, Romero CM, Castro GR. A novel α-l-rhamnosidase with potential applications in citrus juice industry and in winemaking. Eur Food Res Technol 2013. [DOI: 10.1007/s00217-013-2074-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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139
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Narancic T, Radivojevic J, Jovanovic P, Francuski D, Bigovic M, Maslak V, Savic V, Vasiljevic B, O'Connor KE, Nikodinovic-Runic J. Highly efficient Michael-type addition of acetaldehyde to β-nitrostyrenes by whole resting cells of Escherichia coli expressing 4-oxalocrotonate tautomerase. BIORESOURCE TECHNOLOGY 2013; 142:462-468. [PMID: 23759430 DOI: 10.1016/j.biortech.2013.05.074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/17/2013] [Accepted: 05/18/2013] [Indexed: 06/02/2023]
Abstract
A novel whole cell system based on recombinantly expressed 4-oxalocrotonate tautomerase (4-OT) was developed and shown to be an effective biocatalyst for the asymmetric Michael addition of acetaldehyde to β-nitrostyrenes. Optimal ratio of substrates (2mM β-nitrostyrenes and 20mM acetaldehyde) and biocatalyst of 5 g of cell dry weight of biocatalyst per liter was determined. Through further bioprocess improvement by sequential addition of substrate 10mM nitrostyrene biotransformation was achieved within 150 min. Excellent enantioselectivity (>99% ee) and product yields of up to 60% were obtained with β-nitrostyrene substrate. The biotransformation product, 4-nitro-3-phenyl-butanal, was isolated from aqueous media and further transformed into the corresponding amino alcohol. The biocatalyst exhibited lower reaction rates with p-Cl-, o-Cl- and p-F-β-nitrostyrenes with product yields of 38%, 51%, 31% and ee values of 84%, 88% and 94% respectively. The importance of the terminal proline of 4-OT was confirmed by two proline enriched variants and homology modeling.
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Affiliation(s)
- Tanja Narancic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box No. 23, 11010 Belgrade, Serbia
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140
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Efficient production of α-arbutin by whole-cell biocatalysis using immobilized hydroquinone as a glucosyl acceptor. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.01.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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141
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Przybysz A, Volmer AA, Westphal AH, van Berkel WJH. Bifunctional immobilization of a hyperthermostable endo-β-1,3-glucanase. Appl Microbiol Biotechnol 2013; 98:1155-63. [PMID: 23666443 DOI: 10.1007/s00253-013-4953-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 04/23/2013] [Accepted: 04/24/2013] [Indexed: 01/25/2023]
Abstract
Laminarinase A (LamA) from Pyrococcus furiosus is a hyperthermostable endo-β-1,3-glucanase (EC 3.2.1.39) belonging to the glycosyl hydrolase family GH16. Here, we report the two-step immobilization of LamA on macroporous acrylic epoxy beads, extra-functionalized with disulfide groups. To facilitate initial immobilization via thiol-disulfide exchange, we introduced, by site-directed mutagenesis, a superficial cysteine residue near the protein C-terminal end. The thus-obtained S296C variant showed similar catalytic properties as native LamA. The activity of immobilized S296C displayed an inverse relationship with particle size. Use of conventional beads (150-300 μm in diameter) obstructed the catalytic efficiency due to pore diffusion limitation of the polysaccharide substrate. Bifunctional attachment to milled beads (20-40 μm) resulted in high enzyme load and outstanding catalytic features. Bifunctional immobilized S296C showed extreme pH stability and could be repeatedly used at 60 °C without significant activity loss.
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Affiliation(s)
- Agata Przybysz
- Laboratory of Biochemistry, Wageningen University, Dreijenlaan 3, 6703 HA, Wageningen, The Netherlands
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142
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Nunes MAP, Fernandes PCB, Ribeiro MHL. Microtiter plates versus stirred mini-bioreactors in biocatalysis: a scalable approach. BIORESOURCE TECHNOLOGY 2013; 136:30-40. [PMID: 23563437 DOI: 10.1016/j.biortech.2013.02.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 02/10/2013] [Accepted: 02/20/2013] [Indexed: 06/02/2023]
Abstract
To place the application of miniaturized vessels as microbioreactors on a firm footing, focus has been given to engineering characterization. Studies on this matter have mostly involved carrier-free biological systems, while support-based systems have been overlooked. The present work aims to contribute to fill in such gap. Thus, it intended to establish a robust scaled down approach to identify and optimize relevant operational conditions of naringin hydrolysis by naringinase in PVA lens-shaped particles. The influence of geometric and dynamic (viz. Reynolds number) parameters was evaluated. Naringin hydrolysis in round, flat bottom MTP proved more effective than in square, pyramidal bottom. The bioconversion at MTP and stirred tank reactors scales showed that, given the 12.5-fold scale difference was in agreement between the bioconversion rates. The external mass transfer resistances were negligible as deduced from Damkohler modulus ≤1. The bioconversion was effectively scaled-up 200-fold from shaken microtiter plates to stirred tank reactors.
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Affiliation(s)
- Mário A P Nunes
- Research Institute for Medicines and Pharmaceutical Sciences (i-Med-UL), Faculdade de Farmácia, University of Lisbon, Av., Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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143
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van Rossum T, Kengen SWM, van der Oost J. Reporter-based screening and selection of enzymes. FEBS J 2013; 280:2979-96. [DOI: 10.1111/febs.12281] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 04/05/2013] [Accepted: 04/09/2013] [Indexed: 12/25/2022]
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144
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Enzymatic Catalysis at Interfaces—Heterophase Systems as Substrates for Enzymatic Action. Catalysts 2013. [DOI: 10.3390/catal3020401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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145
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Mirabal-Gallardo Y, Soriano MDPC, Santos LS. Stereoselective bioreduction of β-carboline imines through cell-free extracts from earthworms (Eisenia foetida). ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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146
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Sheldon RA, van Pelt S. Enzyme immobilisation in biocatalysis: why, what and how. Chem Soc Rev 2013; 42:6223-35. [DOI: 10.1039/c3cs60075k] [Citation(s) in RCA: 1764] [Impact Index Per Article: 160.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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147
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Patil R, Banoth L, Singh A, Chisti Y, Banerjee UC. Enantioselective bioreduction of cyclic alkanones by whole cells ofCandidaSpecies. BIOCATAL BIOTRANSFOR 2013. [DOI: 10.3109/10242422.2013.778252] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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148
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Filamentous fungal biofilm for production of human drug metabolites. Appl Microbiol Biotechnol 2013; 97:5955-63. [DOI: 10.1007/s00253-013-4833-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 02/18/2013] [Accepted: 03/05/2013] [Indexed: 12/20/2022]
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149
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Bolivar JM, Consolati T, Mayr T, Nidetzky B. Shine a light on immobilized enzymes: real-time sensing in solid supported biocatalysts. Trends Biotechnol 2013; 31:194-203. [PMID: 23384504 DOI: 10.1016/j.tibtech.2013.01.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/06/2013] [Accepted: 01/07/2013] [Indexed: 01/01/2023]
Abstract
Enzyme immobilization on solid supports has been key to biotransformation development. Although technologies for immobilization have largely reached maturity, the resulting biocatalysts are not well understood mechanistically. One limitation is that their internal environment is usually inferred from external data. Therefore, biological consequences of the immobilization remain masked by physical effects of mass transfer, obstructing further development. Work reviewed herein shows that opto-chemical sensing performed directly within the solid support enables the biocatalyst's internal environment to be uncovered quantitatively and in real time. Non-invasive methods of intraparticle pH and O2 determination are presented, and their use as process analytical tools for development of heterogeneous biocatalysts is described. Method diversification to other analytes remains a challenging task for the future.
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Affiliation(s)
- Juan M Bolivar
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, Petersgasse 12, A-8010 Graz, Austria
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150
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Wang R, Zhang Y, Lu D, Ge J, Liu Z, Zare RN. Functional protein-organic/inorganic hybrid nanomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2013; 5:320-8. [DOI: 10.1002/wnan.1210] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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