101
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Schmidt S, Bornscheuer UT. Baeyer-Villiger monooxygenases: From protein engineering to biocatalytic applications. FLAVIN-DEPENDENT ENZYMES: MECHANISMS, STRUCTURES AND APPLICATIONS 2020; 47:231-281. [DOI: 10.1016/bs.enz.2020.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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102
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Overview of Immobilized Enzymes' Applications in Pharmaceutical, Chemical, and Food Industry. Methods Mol Biol 2020; 2100:27-63. [PMID: 31939114 DOI: 10.1007/978-1-0716-0215-7_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The use of immobilized enzymes in industry is becoming a routine process for the manufacture of many key compounds in the pharmaceutical, chemical, and food industry. Some enzymes like lipases are naturally robust and efficient, can be used for the production of many different molecules, and have found broad industrial applications. Some more specific enzymes, like transaminases, have required protein engineering to become suitable for applications in industrial manufacture. For all enzymes, the possibility to be immobilized and used in a heterogeneous form brings important industrial and environmental advantages such as simplified downstream processing or continuous process operations. Here, we present a series of large-scale applications of immobilized enzymes with benefits for the food, chemical, pharmaceutical, cosmetics, and medical device industries, some of them hardly reported before.
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103
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104
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Bilal M, Iqbal HMN. Persistence and impact of steroidal estrogens on the environment and their laccase-assisted removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 690:447-459. [PMID: 31299577 DOI: 10.1016/j.scitotenv.2019.07.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/21/2019] [Accepted: 07/02/2019] [Indexed: 02/05/2023]
Abstract
Steroidal estrogens are widespread water contaminants with potential carcinogenic and endocrine-disrupting activities. The World Health Organization has listed estrogens as group 1 carcinogens. These contaminants are of substantial concern because of potential threats to human health, and aquatic organisms on long-term exposure. A range of methods, including oxidation, adsorption, electrochemical, and irradiation techniques have been employed for their remediation from aqueous systems. However, inadequate removal, toxic sludge generation, high operating costs, and the requisite for skilled operating and maintenance personnel commercially hampered the application of many methods. An interesting alternative treatment approach based on the use of oxidoreductases, particularly laccases, has recently gained amicability for the biotransformation of emerging pollutants. The use of immobilized enzymes is more cost-effective from an industrial perspective due to improved catalytic stability, reusability, reduction of product inhibition, and easier product separation. This review provides comprehensive knowledge on the use of laccases in the biodegradation of steroidal estrogens, including estrone, 17β-estradiol, and 17α-ethinylestradiol with endocrine-disrupting potency from the environment. After an overview of estrogens and catalytic properties of laccase, the use of free, as well as immobilized laccases with a particular emphasis on estrogens removal by laccase-based fed-batch, packed bed bioreactors, and membrane reactors, is discussed. A comparison of existing treatment technologies with enzyme technology for the removal of estrogens from different environmental matrices is made. Lastly, along with concluding remarks, future research direction aimed at bridging knowledge gaps for estrogenic compounds removal are also proposed in this very important research area.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
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105
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Serrano-Arnaldos M, Montiel MC, Ortega-Requena S, Máximo F, Bastida J. Development and economic evaluation of an eco-friendly biocatalytic synthesis of emollient esters. Bioprocess Biosyst Eng 2019; 43:495-505. [PMID: 31701234 DOI: 10.1007/s00449-019-02243-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/29/2019] [Indexed: 01/07/2023]
Abstract
During the past decades the understanding and prospects of enzyme-catalysed reactions have been massively widened and there are a number of implemented large-scale enzymatic processes mainly based in the use of commercial biocatalysts. As it might happen that the same process can be successfully carried out by different commercial lipases, the election of the biocatalyst must rely on productivity and economic considerations. This work presents productiveness and direct operation cost evaluation as a key tool for the selection between two commercial lipase catalysts, the versatile but expensive Novozym® 435 and a much more economical option, Lipozyme® TL IM, in the synthesis of spermaceti, a mixture of emollient esters with cosmetic applications. Proving that Novozym® 435 leads to minimum savings of 10% with respect to the cheapest immobilized derivative, biocatalyst cost does not appear to be the major contribution to the economics of the processes under study, due to their great capacity to be recovered and reused. At laboratory scale, the biggest economic investment is caused by substrates, which can be massively reduced at industrial scale by using bulk reagents. In such case, energy cost may be the major contribution to the process economy. This work proposes an optimized process ready to be scaled-up in order to accurately determine the energetic requirements of the possible industrial enzymatic synthesis.
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Affiliation(s)
- Mar Serrano-Arnaldos
- Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain.
| | - María Claudia Montiel
- Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain
| | - Salvadora Ortega-Requena
- Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain
| | - Fuensanta Máximo
- Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain
| | - Josefa Bastida
- Department of Chemical Engineering, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain
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106
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Elias AM, Giordano RDC, Secchi AR, Furlan FF. Integrating pinch analysis and process simulation within equation-oriented simulators. Comput Chem Eng 2019. [DOI: 10.1016/j.compchemeng.2019.106555] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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107
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Rauch MCR, Huijbers MME, Pabst M, Paul CE, Pešić M, Arends IWCE, Hollmann F. Photochemical regeneration of flavoenzymes - An Old Yellow Enzyme case-study. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2019; 1868:140303. [PMID: 31678192 DOI: 10.1016/j.bbapap.2019.140303] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 12/01/2022]
Abstract
Direct, NAD(P)H-independent regeneration of Old Yellow Enzymes represents an interesting approach for simplified reaction schemes for the stereoselective reduction of conjugated C=C-double bonds. Simply by illuminating the reaction mixtures with blue light in the presence of sacrificial electron donors enables to circumvent the costly and unstable nicotinamide cofactors and a corresponding regeneration system. In the present study, we characterise the parameters determining the efficiency of this approach and outline the current limitations. Particularly, the photolability of the flavin photocatalyst and the (flavin-containing) biocatalyst represent the major limitation en route to preparative application.
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Affiliation(s)
- M C R Rauch
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - M M E Huijbers
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - M Pabst
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - C E Paul
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - M Pešić
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - I W C E Arends
- Faculty of Science, Utrecht University, Budapestlaan 6, 3584 CD Utrecht, the Netherlands
| | - F Hollmann
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands.
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108
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Fürst MJLJ, Gran-Scheuch A, Aalbers FS, Fraaije MW. Baeyer–Villiger Monooxygenases: Tunable Oxidative Biocatalysts. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03396] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maximilian J. L. J. Fürst
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
| | - Alejandro Gran-Scheuch
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
- Department of Chemical and Bioprocesses Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile
| | - Friso S. Aalbers
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
| | - Marco W. Fraaije
- Molecular Enzymology Group, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
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109
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Considerations when Measuring Biocatalyst Performance. Molecules 2019; 24:molecules24193573. [PMID: 31623317 PMCID: PMC6804192 DOI: 10.3390/molecules24193573] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 01/02/2023] Open
Abstract
As biocatalysis matures, it becomes increasingly important to establish methods with which to measure biocatalyst performance. Such measurements are important to assess immobilization strategies, different operating modes, and reactor configurations, aside from comparing protein engineered variants and benchmarking against economic targets. While conventional measurement techniques focus on a single performance metric (such as the total turnover number), here, it is argued that three metrics (achievable product concentration, productivity, and enzyme stability) are required for an accurate assessment of scalability.
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110
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Enantioselective Resolution of (±)-1-Phenylethyl Acetate by Using the Whole Cells of Deep-sea Bacterium Bacillus sp. DL-2. Chem Res Chin Univ 2019. [DOI: 10.1007/s40242-019-9126-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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111
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Česnik M, Sudar M, Roldan R, Hernandez K, Parella T, Clapés P, Charnock S, Vasić-Rački Đ, Findrik Blažević Z. Model-based optimization of the enzymatic aldol addition of propanal to formaldehyde: A first step towards enzymatic synthesis of 3-hydroxybutyric acid. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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112
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Ward VC, Chatzivasileiou AO, Stephanopoulos G. Cell free biosynthesis of isoprenoids from isopentenol. Biotechnol Bioeng 2019; 116:3269-3281. [DOI: 10.1002/bit.27146] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 08/01/2019] [Accepted: 08/11/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Valerie C.A. Ward
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts
- Department of Chemical Engineering University of Waterloo Waterloo Ontario Canada
| | | | - Gregory Stephanopoulos
- Department of Chemical Engineering Massachusetts Institute of Technology Cambridge Massachusetts
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113
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Bilal M, Iqbal HMN. Sustainable bioconversion of food waste into high-value products by immobilized enzymes to meet bio-economy challenges and opportunities - A review. Food Res Int 2019; 123:226-240. [PMID: 31284972 DOI: 10.1016/j.foodres.2019.04.066] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 04/15/2019] [Accepted: 04/29/2019] [Indexed: 02/05/2023]
Abstract
Over the past few years, food waste has intensified much attention from the local public, national and international organizations as well as a wider household territory due to increasing environmental, social and economic concerns, climate change and scarcity of fossil fuel resources. On one aspect, food-processing waste represents a substantial ecological burden. On the other hand, these waste streams are rich in carbohydrates, proteins, and lipids, thus hold significant potential for biotransformation into an array of high-value compounds. Indeed, the high sugar, protein, and fat content render food waste streams as attractive feedstocks for enzymatic valorization given the plentiful volumes generated annually. Enzymes as industrial biocatalysts offer unique advantages over traditional chemical processes with regard to eco-sustainability, and process efficiency. Herein, an effort has been made to delineate immobilized enzyme-driven valorization of food waste streams into marketable products such as biofuels, bioactive compounds, biodegradable plastics, prebiotics, sweeteners, rare sugars, surfactants, etc. Current challenges and prospects are also highlighted with respect to the development of industrially adaptable biocatalytic systems to achieve the ultimate objectives of sustainable manufacturing combined with minimum waste generation. Applications-based strategies to enzyme immobilization are imperative to design cost-efficient and sustainable industrially applicable biocatalysts. With a deeper apprehension of support material influences, and analyzing the extreme environment, enzymes might have significant potential in improving the overall sustainability of food processing.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
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114
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Otten J, Tenhaef N, Jansen RP, Döbber J, Jungbluth L, Noack S, Oldiges M, Wiechert W, Pohl M. A FRET-based biosensor for the quantification of glucose in culture supernatants of mL scale microbial cultivations. Microb Cell Fact 2019; 18:143. [PMID: 31434564 PMCID: PMC6704555 DOI: 10.1186/s12934-019-1193-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 08/14/2019] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND In most microbial cultivations D-glucose is the main carbon and energy source. However, quantification of D-glucose especially in small scale is still challenging. Therefore, we developed a FRET-based glucose biosensor, which can be applied in microbioreactor-based cultivations. This sensor consists of a glucose binding protein sandwiched between two fluorescent proteins, constituting a FRET pair. Upon D-glucose binding the sensor undergoes a conformational change which is translated into a FRET-ratio change. RESULTS The selected sensor shows an apparent Kd below 1.5 mM D-glucose and a very high sensitivity of up to 70% FRET-ratio change between the unbound and the glucose-saturated state. The soluble sensor was successfully applied online to monitor the glucose concentration in an Escherichia coli culture. Additionally, this sensor was utilized in an at-line process for a Corynebacterium glutamicum culture as an example for a process with cell-specific background (e.g. autofluorescence) and medium-induced quenching. Immobilization of the sensor via HaloTag® enabled purification and covalent immobilization in one step and increased the stability during application, significantly. CONCLUSION A FRET-based glucose sensor was used to quantify D-glucose consumption in microtiter plate based cultivations. To the best of our knowledge, this is the first method reported for online quantification of D-glucose in microtiter plate based cultivations. In comparison to D-glucose analysis via an enzymatic assay and HPLC, the sensor performed equally well, but enabled much faster measurements, which allowed to speed up microbial strain development significantly.
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Affiliation(s)
- Julia Otten
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Niklas Tenhaef
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Roman P. Jansen
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Johannes Döbber
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Lisa Jungbluth
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Stephan Noack
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Marco Oldiges
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Wolfgang Wiechert
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Martina Pohl
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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115
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Two-Step Production of Neofructo-Oligosaccharides Using Immobilized Heterologous Aspergillus terreus 1F-Fructosyltransferase Expressed in Kluyveromyces lactis and Native Xanthophyllomyces dendrorhous G6-Fructosyltransferase. Catalysts 2019. [DOI: 10.3390/catal9080673] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Fructo-oligosaccharides (FOS) are prebiotic low-calorie sweeteners that are synthesized by the transfer of fructose units from sucrose by enzymes known as fructosyltransferases. If these enzymes generate β-(2,6) glycosidic bonds, the resulting oligosaccharides belong to the neoseries (neoFOS). Here, we characterized the properties of three different fructosyltransferases using a design of experiments approach based on response surface methodology with a D-optimal design. The reaction time, pH, temperature, and substrate concentration were used as parameters to predict three responses: The total enzyme activity, the concentration of neoFOS and the neoFOS yield relative to the initial concentration of sucrose. We also conducted immobilization studies to establish a cascade reaction for neoFOS production with two different fructosyltransferases, achieving a total FOS yield of 47.02 ± 3.02%. The resulting FOS mixture included 53.07 ± 1.66 mM neonystose (neo-GF3) and 20.8 ± 1.91 mM neo-GF4.
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116
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Finnigan W, Cutlan R, Snajdrova R, Adams JP, Littlechild JA, Harmer NJ. Engineering a Seven Enzyme Biotransformation using Mathematical Modelling and Characterized Enzyme Parts. ChemCatChem 2019; 11:3474-3489. [PMID: 31598184 PMCID: PMC6774274 DOI: 10.1002/cctc.201900646] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/30/2019] [Indexed: 12/28/2022]
Abstract
Multi-step enzyme reactions offer considerable cost and productivity benefits. Process models offer a route to understanding the complexity of these reactions, and allow for their optimization. Despite the increasing prevalence of multi-step biotransformations, there are few examples of process models for enzyme reactions. From a toolbox of characterized enzyme parts, we demonstrate the construction of a process model for a seven enzyme, three step biotransformation using isolated enzymes. Enzymes for cofactor regeneration were employed to make this in vitro reaction economical. Good modelling practice was critical in evaluating the impact of approximations and experimental error. We show that the use and validation of process models was instrumental in realizing and removing process bottlenecks, identifying divergent behavior, and for the optimization of the entire reaction using a genetic algorithm. We validated the optimized reaction to demonstrate that complex multi-step reactions with cofactor recycling involving at least seven enzymes can be reliably modelled and optimized.
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Affiliation(s)
- William Finnigan
- Department of BiosciencesUniversity of Exeter Henry Wellcome Building for BiocatalysisStocker RoadExeterEX4 4QDUK
| | - Rhys Cutlan
- Living Systems InstituteUniversity of ExeterStocker RoadExeterEX4 4QDmUK
| | - Radka Snajdrova
- GlaxoSmithKline R&D LtdMedicines Research Centre Gunnels Wood Road, StevenageHertfordshireSG1 2NYUK
| | - Joseph P. Adams
- GlaxoSmithKline R&D LtdMedicines Research Centre Gunnels Wood Road, StevenageHertfordshireSG1 2NYUK
| | - Jennifer A. Littlechild
- Department of BiosciencesUniversity of Exeter Henry Wellcome Building for BiocatalysisStocker RoadExeterEX4 4QDUK
| | - Nicholas J. Harmer
- Department of BiosciencesUniversity of Exeter Henry Wellcome Building for BiocatalysisStocker RoadExeterEX4 4QDUK
- Living Systems InstituteUniversity of ExeterStocker RoadExeterEX4 4QDmUK
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117
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Pithani S, Karlsson S, Emtenäs H, Öberg CT. Using Spinchem Rotating Bed Reactor Technology for Immobilized Enzymatic Reactions: A Case Study. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00240] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Subhash Pithani
- Early Chemical Development, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca R&D Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Staffan Karlsson
- Early Chemical Development, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca R&D Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
| | - Hans Emtenäs
- Early Chemical Development, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca R&D Gothenburg, Pepparedsleden 1, 431 83 Mölndal, Sweden
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118
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Wang TF, Lo HF, Chi MC, Lai KL, Lin MG, Lin LL. Affinity Immobilization of a Bacterial Prolidase onto Metal-Ion-Chelated Magnetic Nanoparticles for the Hydrolysis of Organophosphorus Compounds. Int J Mol Sci 2019; 20:E3625. [PMID: 31344929 PMCID: PMC6696040 DOI: 10.3390/ijms20153625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/10/2019] [Accepted: 07/22/2019] [Indexed: 12/23/2022] Open
Abstract
In this study, silica-coated magnetic nanoparticles (SiMNPs) with isocyanatopropyltriethoxysilane as a metal-chelating ligand were prepared for the immobilization of His6-tagged Escherichia coli prolidase (His6-EcPepQ). Under one-hour coupling, the enzyme-loading capacity for the Ni2+-functionalized SiMNPs (NiNTASiMNPs) was 1.5 mg/mg support, corresponding to about 58.6% recovery of the initial activity. Native and enzyme-bound NiNTASiMNPs were subsequently characterized by transmission electron microscopy (TEM), superparamagnetic analysis, X-ray diffraction, and Fourier transform infrared (FTIR) spectroscopy. As compared to free enzyme, His6-EcPepQ@NiNTASiMNPs had significantly higher activity at 70 °C and pH ranges of 5.5 to 10, and exhibited a greater stability during a storage period of 60 days and could be recycled 20 times with approximately 80% retention of the initial activity. The immobilized enzyme was further applied in the hydrolysis of two different organophosphorus compounds, dimethyl p-nitrophenyl phosphate (methyl paraoxon) and diethyl p-nitrophenyl phosphate (ethyl paraoxon). The experimental results showed that methyl paraoxon was a preferred substrate for His6-EcPepQ and the kinetic behavior of free and immobilized enzymes towards this substance was obviously different. Taken together, the immobilization strategy surely provides an efficient means to deposit active enzymes onto NiNTASiMNPs for His6-EcPepQ-mediated biocatalysis.
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Affiliation(s)
- Tzu-Fan Wang
- Department of Applied Chemistry, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan
| | - Huei-Fen Lo
- Department of Food Science and Technology, Hungkuang University, 1018 Taiwan Boulevard, Shalu District, Taichung City 43302, Taiwan.
| | - Meng-Chun Chi
- Department of Applied Chemistry, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan
| | - Kuan-Ling Lai
- Department of Applied Chemistry, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan
- Department of Food Science and Technology, Hungkuang University, 1018 Taiwan Boulevard, Shalu District, Taichung City 43302, Taiwan
| | - Min-Guan Lin
- Institute of Molecular Biology, Academia Sinica, Nangang District, Taipei City 11529, Taiwan
| | - Long-Liu Lin
- Department of Applied Chemistry, National Chiayi University, 300 Syuefu Road, Chiayi City 60004, Taiwan.
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119
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Dias Gomes M, Moiseyenko RP, Baum A, Jørgensen TM, Woodley JM. Use of image analysis to understand enzyme stability in an aerated stirred reactor. Biotechnol Prog 2019; 35:e2878. [DOI: 10.1002/btpr.2878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Mafalda Dias Gomes
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark Lyngby Denmark
| | - Rayisa P. Moiseyenko
- Statistics and Data Analysis, Department of Applied Mathematics and Computer ScienceTechnical University of Denmark Lyngby Denmark
| | - Andreas Baum
- Statistics and Data Analysis, Department of Applied Mathematics and Computer ScienceTechnical University of Denmark Lyngby Denmark
| | - Thomas M. Jørgensen
- Statistics and Data Analysis, Department of Applied Mathematics and Computer ScienceTechnical University of Denmark Lyngby Denmark
| | - John M. Woodley
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark Lyngby Denmark
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120
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Seel CJ, Gulder T. Biocatalysis Fueled by Light: On the Versatile Combination of Photocatalysis and Enzymes. Chembiochem 2019; 20:1871-1897. [PMID: 30864191 DOI: 10.1002/cbic.201800806] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/11/2019] [Indexed: 12/11/2022]
Abstract
Enzymes catalyze a plethora of highly specific transformations under mild and environmentally benign reaction conditions. Their fascinating performances attest to high synthetic potential that is often hampered by operational obstacles such as in vitro cofactor supply and regeneration. Exploiting light and combining it with biocatalysis not only helps in overcoming these drawbacks, but the fruitful liaison of these two fields of "green chemistry" also offers opportunities to unlock new synthetic reactivities. In this review we provide an overview of the wide variety of photo-biocatalysis, ranging from the photochemical delivery of electrons required in redox biocatalysis and photochemical cofactor and reagent (re)generation to direct photoactivation of enzymes enabling reactions unknown in nature. We highlight synthetically relevant transformations such as asymmetric reactions facilitated by the combination of light as energy source and enzymes' catalytic power.
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Affiliation(s)
- Catharina J Seel
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Tanja Gulder
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
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Stamm A, Biundo A, Schmidt B, Brücher J, Lundmark S, Olsén P, Fogelström L, Malmström E, Bornscheuer UT, Syrén P. A Retro-biosynthesis-Based Route to Generate Pinene-Derived Polyesters. Chembiochem 2019; 20:1664-1671. [PMID: 30793830 PMCID: PMC6618282 DOI: 10.1002/cbic.201900046] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Indexed: 12/21/2022]
Abstract
Significantly increased production of biobased polymers is a prerequisite to replace petroleum-based materials towards reaching a circular bioeconomy. However, many renewable building blocks from wood and other plant material are not directly amenable for polymerization, due to their inert backbones and/or lack of functional group compatibility with the desired polymerization type. Based on a retro-biosynthetic analysis of polyesters, a chemoenzymatic route from (-)-α-pinene towards a verbanone-based lactone, which is further used in ring-opening polymerization, is presented. Generated pinene-derived polyesters showed elevated degradation and glass transition temperatures, compared with poly(ϵ-decalactone), which lacks a ring structure in its backbone. Semirational enzyme engineering of the cyclohexanone monooxygenase from Acinetobacter calcoaceticus enabled the biosynthesis of the key lactone intermediate for the targeted polyester. As a proof of principle, one enzyme variant identified from screening in a microtiter plate was used in biocatalytic upscaling, which afforded the bicyclic lactone in 39 % conversion in shake flask scale reactions.
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Affiliation(s)
- Arne Stamm
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- KTH Royal Institute of TechnologyScience for Life LaboratorySchool of Engineering Sciences in ChemistryBiotechnology and HealthTomtebodavägen 23Box 1031171 21 SolnaStockholmSweden
| | - Antonino Biundo
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- KTH Royal Institute of TechnologyScience for Life LaboratorySchool of Engineering Sciences in ChemistryBiotechnology and HealthTomtebodavägen 23Box 1031171 21 SolnaStockholmSweden
| | - Björn Schmidt
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- KTH Royal Institute of TechnologyScience for Life LaboratorySchool of Engineering Sciences in ChemistryBiotechnology and HealthTomtebodavägen 23Box 1031171 21 SolnaStockholmSweden
| | | | - Stefan Lundmark
- Perstorp AB, InnovationPerstorp Industrial Park284 80PerstorpSweden
| | - Peter Olsén
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
| | - Linda Fogelström
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- Wallenberg Wood Science CenterTeknikringen 56–58100 44StockholmSweden
| | - Eva Malmström
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- Wallenberg Wood Science CenterTeknikringen 56–58100 44StockholmSweden
| | - Uwe T. Bornscheuer
- Department of Biotechnology and Enzyme CatalysisInstitute of BiochemistryUniversität GreifswaldFelix-Hausdorff-Strasse 417487GreifswaldGermany
| | - Per‐Olof Syrén
- KTH Royal Institute of TechnologySchool of Engineering Sciences in ChemistryBiotechnology and Health, Department of Fibre and Polymer TechnologyTeknikringen 56–58100 44StockholmSweden
- KTH Royal Institute of TechnologyScience for Life LaboratorySchool of Engineering Sciences in ChemistryBiotechnology and HealthTomtebodavägen 23Box 1031171 21 SolnaStockholmSweden
- KTH Royal Institute of TechnologyScience for Life LaboratorySchool of Engineering Sciences in ChemistryBiotechnology and Health, Division of Protein TechnologyTomtebodavägen 23Box 1031171 21 SolnaStockholmSweden
- Wallenberg Wood Science CenterTeknikringen 56–58100 44StockholmSweden
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122
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Fürst MJLJ, Boonstra M, Bandstra S, Fraaije MW. Stabilization of cyclohexanone monooxygenase by computational and experimental library design. Biotechnol Bioeng 2019; 116:2167-2177. [PMID: 31124128 PMCID: PMC6836875 DOI: 10.1002/bit.27022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/14/2019] [Accepted: 05/18/2019] [Indexed: 12/23/2022]
Abstract
Enzymes often by far exceed the activity, selectivity, and sustainability achieved with chemical catalysts. One of the main reasons for the lack of biocatalysis in the chemical industry is the poor stability exhibited by many enzymes when exposed to process conditions. This dilemma is exemplified in the usually very temperature‐sensitive enzymes catalyzing the Baeyer–Villiger reaction, which display excellent stereo‐ and regioselectivity and offer a green alternative to the commonly used, explosive peracids. Here we describe a protein engineering approach applied to cyclohexanone monooxygenase from Rhodococcus sp. HI‐31, a substrate‐promiscuous enzyme that efficiently catalyzes the production of the nylon‐6 precursor ε‐caprolactone. We used a framework for rapid enzyme stabilization by computational libraries (FRESCO), which predicts protein‐stabilizing mutations. From 128 screened point mutants, approximately half had a stabilizing effect, albeit mostly to a small degree. To overcome incompatibility effects observed upon combining the best hits, an easy shuffled library design strategy was devised. The most stable and highly active mutant displayed an increase in unfolding temperature of 13°C and an approximately 33x increase in half‐life at 30°C. In contrast to the wild‐type enzyme, this thermostable 8x mutant is an attractive biocatalyst for biotechnological applications.
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Affiliation(s)
| | - Marjon Boonstra
- Molecular Enzymology Group, University of Groningen, Groningen, The Netherlands
| | - Selle Bandstra
- Molecular Enzymology Group, University of Groningen, Groningen, The Netherlands
| | - Marco W Fraaije
- Molecular Enzymology Group, University of Groningen, Groningen, The Netherlands
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123
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Ruales-Salcedo AV, Higuita JC, Fontalvo J, Woodley JM. Design of enzymatic cascade processes for the production of low-priced chemicals. ACTA ACUST UNITED AC 2019; 74:77-84. [PMID: 30710489 DOI: 10.1515/znc-2018-0190] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 01/07/2019] [Indexed: 11/15/2022]
Abstract
While the application of enzymes to synthetic and industrial problems continues to grow, the major development today is focused on multi-enzymatic cascades. Such systems are particularly attractive, because many commercially available enzymes operate under relatively similar operating conditions. This opens the possibility of one-pot operation with multiple enzymes in a single reactor. In this paper the concept of modules is introduced whereby groups of enzymes are combined in modules, each operating in a single reactor, but with the option of various operating strategies to avoid any complications of nonproductive interactions between the enzymes, substrates or products in a given reactor. In this paper the selection of modules is illustrated using the synthesis of the bulk chemical, gluconic acid, from lignocellulosic waste.
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Affiliation(s)
- Angela Viviana Ruales-Salcedo
- Grupo de Investigación en Aplicación de Nuevas Tecnologías, Departamento de Ingeniería Química, Universidad Nacional de Colombia, Campus La Nubia, Edificio L103, Manizales, Colombia
| | - Juan Carlos Higuita
- Grupo de Procesos Químicos, Catalíticos y Biotecnológicos, Departamento de Ingeniería Química, Universidad Nacional de Colombia, Campus La Nubia, Edificio L103, Manizales, Colombia
| | - Javier Fontalvo
- Grupo de Investigación en Aplicación de Nuevas Tecnologías, Departamento de Ingeniería Química, Universidad Nacional de Colombia, Campus La Nubia, Edificio L103, Manizales, Colombia
| | - John M Woodley
- PROSYS Research Centre, Department of Chemical and Biochemical Engineering, The Technical University of Denmark (DTU), Building 229, 2800 Kgs. Lyngby, Denmark
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Claaßen C, Gerlach T, Rother D. Stimulus-Responsive Regulation of Enzyme Activity for One-Step and Multi-Step Syntheses. Adv Synth Catal 2019; 361:2387-2401. [PMID: 31244574 PMCID: PMC6582597 DOI: 10.1002/adsc.201900169] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/25/2019] [Indexed: 01/20/2023]
Abstract
Multi-step biocatalytic reactions have gained increasing importance in recent years because the combination of different enzymes enables the synthesis of a broad variety of industrially relevant products. However, the more enzymes combined, the more crucial it is to avoid cross-reactivity in these cascade reactions and thus achieve high product yields and high purities. The selective control of enzyme activity, i.e., remote on-/off-switching of enzymes, might be a suitable tool to avoid the formation of unwanted by-products in multi-enzyme reactions. This review compiles a range of methods that are known to modulate enzyme activity in a stimulus-responsive manner. It focuses predominantly on in vitro systems and is subdivided into reversible and irreversible enzyme activity control. Furthermore, a discussion section provides indications as to which factors should be considered when designing and choosing activity control systems for biocatalysis. Finally, an outlook is given regarding the future prospects of the field.
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Affiliation(s)
- Christiane Claaßen
- Institute of Bio- and Geosciences – Biotechnology (IBG-1)Forschungszentrum Jülich GmbH52425JülichGermany
| | - Tim Gerlach
- Institute of Bio- and Geosciences – Biotechnology (IBG-1)Forschungszentrum Jülich GmbH52425JülichGermany
- Aachen Biology and Biotechnology (ABBt)RWTH Aachen University52074AachenGermany
| | - Dörte Rother
- Institute of Bio- and Geosciences – Biotechnology (IBG-1)Forschungszentrum Jülich GmbH52425JülichGermany
- Aachen Biology and Biotechnology (ABBt)RWTH Aachen University52074AachenGermany
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125
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Gawas SD, Khan N, Rathod VK. APPLICATION OF RESPONSE SURFACE METHODOLOGY FOR LIPASE CATALYZED SYNTHESIS OF 2-ETHYLHEXYL PALMITATE IN A SOLVENT FREE SYSTEM USING ULTRASOUND. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190362s20180453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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126
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Rao J, Zhang R, Liang H, Gao XD, Nakanishi H, Xu Y. Efficient chiral synthesis by Saccharomyces cerevisiae spore encapsulation of Candida parapsilosis Glu228Ser/(S)-carbonyl reductase II and Bacillus sp. YX-1 glucose dehydrogenase in organic solvents. Microb Cell Fact 2019; 18:87. [PMID: 31109314 PMCID: PMC6526602 DOI: 10.1186/s12934-019-1137-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/08/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Saccharomyces cerevisiae AN120 osw2∆ spores were used as a host with good resistance to unfavorable environment. This work was undertaken to develop a new yeast spore-encapsulation of Candida parapsilosis Glu228Ser/(S)-carbonyl reductase II and Bacillus sp. YX-1 glucose dehydrogenase for efficient chiral synthesis in organic solvents. RESULTS The spore microencapsulation of E228S/SCR II and GDH in S. cerevisiae AN120 osw2∆ catalyzed (R)-phenylethanol in a good yield with an excellent enantioselectivity (up to 99%) within 4 h. It presented good resistance and catalytic functions under extreme temperature and pH conditions. The encapsulation produced several chiral products with over 70% yield and over 99% enantioselectivity in ethyl acetate after being recycled for 4-6 times. It increased substrate concentration over threefold and reduced the reaction time two to threefolds compared to the recombinant Escherichia coli containing E228S and glucose dehydrogenase. CONCLUSIONS This work first described sustainable enantioselective synthesis without exogenous cofactors in organic solvents using yeast spore-microencapsulation of coupled alcohol dehydrogenases.
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Affiliation(s)
- Jingxin Rao
- College of Science of China Pharmaceutical University, Nanjing, 211198, People's Republic of China
| | - Rongzhen Zhang
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China.,School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, People's Republic of China
| | - Hongbo Liang
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xiao-Dong Gao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Hideki Nakanishi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Yan Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China.
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127
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Alcover N, Carceller A, Álvaro G, Guillén M. Zymobacter palmae pyruvate decarboxylase production process development: Cloning in Escherichia coli, fed-batch culture and purification. Eng Life Sci 2019; 19:502-512. [PMID: 32625027 DOI: 10.1002/elsc.201900010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/25/2019] [Accepted: 04/24/2019] [Indexed: 11/11/2022] Open
Abstract
Pyruvate decarboxylase (PDC) is responsible for the decarboxylation of pyruvate, producing acetaldehyde and carbon dioxide and is of high interest for industrial applications. PDC is a very powerful tool in the enzymatic synthesis of chiral amines by combining it with transaminases when alanine is used as amine donor. However, one of the main drawback that hampers its use in biocatalysis is its production and the downstream processing on scale. In this paper, a production process of PDC from Zymobacter palmae has been developed. The enzyme has been cloned and overexpressed in Escherichia coli. It is presented, for the first time, the evaluation of the production of recombinant PDC in a bench-scale bioreactor, applying a substrate-limiting fed-batch strategy which led to a volumetric productivity and a final PDC specific activity of 6942 U L-1h-1 and 3677 U gDCW-1 (dry cell weight). Finally, PDC was purified in fast protein liquid chromatography equipment by ion exchange chromatography. The developed purification process resulted in 100% purification yield and a purification factor of 3.8.
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Affiliation(s)
- Natàlia Alcover
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering Universitat Autònoma de Barcelona Bellaterra Spain
| | - Albert Carceller
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering Universitat Autònoma de Barcelona Bellaterra Spain
| | - Gregorio Álvaro
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering Universitat Autònoma de Barcelona Bellaterra Spain
| | - Marina Guillén
- Bioprocess Engineering and Applied Biocatalysis Group, Department of Chemical Biological and Environmental Engineering Universitat Autònoma de Barcelona Bellaterra Spain
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128
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Cirujano FG. Engineered MOFs and Enzymes for the Synthesis of Active Pharmaceutical Ingredients. ChemCatChem 2019. [DOI: 10.1002/cctc.201900131] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Francisco G. Cirujano
- Centre for Surface Chemistry and CatalysisKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
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129
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Haque RU, Paradisi F, Allers T. Haloferax volcanii as immobilised whole cell biocatalyst: new applications for halophilic systems. Appl Microbiol Biotechnol 2019; 103:3807-3817. [PMID: 30877354 PMCID: PMC6469819 DOI: 10.1007/s00253-019-09725-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 02/18/2019] [Accepted: 02/24/2019] [Indexed: 01/12/2023]
Abstract
Enzyme-mediated synthesis of pharmaceutical compounds is a 'green' alternative to traditional synthetic chemistry, and microbial engineering opens up the possibility of using whole cells as mini-factories. Whole-cell biocatalysis reduces cost by eliminating expensive enzyme purification and cofactor addition steps, as well as resulting in increased enzyme stability. Haloferax volcanii is a model halophilic archaeon encoding highly salt and organic solvent tolerant enzymes such as alcohol dehydrogenase (HvADH2), which catalyses the reduction of aldehydes and ketone in the presence of NADPH/NADH cofactor. A H. volcanii strain for constitutive HvADH2 expression was generated using a strong synthetic promoter (p.syn). The strain was immobilised in calcium alginate beads and repeatedly used as a whole-cell biocatalyst. The reduction of acetophenone, used as test substrate, was very successful and high yields were detected from immobilised whole cells over repeated biotransformation cycles. The immobilised H. volcanii retained stability and high product yields after 1 month of storage at room temperature. This newly developed system offers halophilic enzyme expression in its native environment, high product yield, stability and reusability without the addition of any expensive NADPH/NADH cofactor. This is the first report of whole cell-mediated biocatalysis by the halophilic archaeon H. volcanii.
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Affiliation(s)
- R U Haque
- School of Life Sciences, Queens Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK.,School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - F Paradisi
- School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK.
| | - T Allers
- School of Life Sciences, Queens Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK.
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130
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131
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de Almeida TP, van Schie MMCH, Ma A, Tieves F, Younes SHH, Fernández-Fueyo E, Arends IWCE, Riul A, Hollmann F. Efficient Aerobic Oxidation of trans
-2-Hexen-1-ol using the Aryl Alcohol Oxidase from Pleurotus eryngii. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801312] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- T. P. de Almeida
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Ma
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - F. Tieves
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - S. H. H. Younes
- Department of Biotechnology; Delft University of Technology, The; Netherlands
- Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - E. Fernández-Fueyo
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Riul
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW); University of Campinas (UNICAMP), SP; Brazil
| | - F. Hollmann
- Department of Biotechnology; Delft University of Technology, The; Netherlands
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132
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Jäger VD, Kloss R, Grünberger A, Seide S, Hahn D, Karmainski T, Piqueray M, Embruch J, Longerich S, Mackfeld U, Jaeger KE, Wiechert W, Pohl M, Krauss U. Tailoring the properties of (catalytically)-active inclusion bodies. Microb Cell Fact 2019; 18:33. [PMID: 30732596 PMCID: PMC6367779 DOI: 10.1186/s12934-019-1081-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/30/2019] [Indexed: 01/02/2023] Open
Abstract
Background Immobilization is an appropriate tool to ease the handling and recycling of enzymes in biocatalytic processes and to increase their stability. Most of the established immobilization methods require case-to-case optimization, which is laborious and time-consuming. Often, (chromatographic) enzyme purification is required and stable immobilization usually includes additional cross-linking or adsorption steps. We have previously shown in a few case studies that the molecular biological fusion of an aggregation-inducing tag to a target protein induces the intracellular formation of protein aggregates, so called inclusion bodies (IBs), which to a certain degree retain their (catalytic) function. This enables the combination of protein production and immobilization in one step. Hence, those biologically-produced immobilizates were named catalytically-active inclusion bodies (CatIBs) or, in case of proteins without catalytic activity, functional IBs (FIBs). While this strategy has been proven successful, the efficiency, the potential for optimization and important CatIB/FIB properties like yield, activity and morphology have not been investigated systematically. Results We here evaluated a CatIB/FIB toolbox of different enzymes and proteins. Different optimization strategies, like linker deletion, C- versus N-terminal fusion and the fusion of alternative aggregation-inducing tags were evaluated. The obtained CatIBs/FIBs varied with respect to formation efficiency, yield, composition and residual activity, which could be correlated to differences in their morphology; as revealed by (electron) microscopy. Last but not least, we demonstrate that the CatIB/FIB formation efficiency appears to be correlated to the solvent-accessible hydrophobic surface area of the target protein, providing a structure-based rationale for our strategy and opening up the possibility to predict its efficiency for any given target protein. Conclusion We here provide evidence for the general applicability, predictability and flexibility of the CatIB/FIB immobilization strategy, highlighting the application potential of CatIB-based enzyme immobilizates for synthetic chemistry, biocatalysis and industry. Electronic supplementary material The online version of this article (10.1186/s12934-019-1081-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- V D Jäger
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, 52425, Jülich, Germany.,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - R Kloss
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - A Grünberger
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Multiscale Bioengineering, Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - S Seide
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - D Hahn
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - T Karmainski
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - M Piqueray
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - J Embruch
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - S Longerich
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - U Mackfeld
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - K-E Jaeger
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, 52425, Jülich, Germany.,IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - W Wiechert
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - M Pohl
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - U Krauss
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, 52425, Jülich, Germany. .,Bioeconomy Science Center (BioSC), c/o, Forschungszentrum Jülich, 52425, Jülich, Germany.
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133
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Budžaki S, Sundaram S, Tišma M, Hessel V. Cost analysis of oil cake-to-biodiesel production in packed-bed micro-flow reactors with immobilized lipases. J Biosci Bioeng 2019; 128:98-102. [PMID: 30745064 DOI: 10.1016/j.jbiosc.2019.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
Biodiesel production depends to a great extent on the use of cheap raw materials, since biodiesel itself is a mass product, not a high-value product. New processing methods, such as micro-flow continuous processing combined with enzymatic catalysis, open doors to the latter. As reported here, the window of opportunity in enzyme-catalyzed biodiesel production is the conversion of waste cooking oil. The main technological challenge for this is to obtain efficient immobilization of the lipase catalyst on beads. The beads can be filled into tubular reactors where designed packed-bed provide porous channels, forming micro-flow. It turns out, that in this way, the immobilization costs become the decisive economic factor. This paper reports a solution to that issue. The use of oil cake enables economic viability, which is not given by any of the commercial polymeric substrates used so far for enzyme immobilization. The costs of immobilization are mirrored in the earnings and cash flow of the new biotechnological process.
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Affiliation(s)
- Sandra Budžaki
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia
| | - Smitha Sundaram
- Group Micro Flow Chemistry and Process Technology, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, the Netherlands
| | - Marina Tišma
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia
| | - Volker Hessel
- Group Micro Flow Chemistry and Process Technology, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, the Netherlands; School of Chemical Engineering, The University of Adelaide, Adelaide, 5005 South Australia, Australia.
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134
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Hülsewede D, Meyer L, von Langermann J. Application of In Situ Product Crystallization and Related Techniques in Biocatalytic Processes. Chemistry 2019; 25:4871-4884. [DOI: 10.1002/chem.201804970] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/04/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Dennis Hülsewede
- Biocatalytic Synthesis Group, Institute of ChemistryUniversity of Rostock A-Einstein-Str. 3A 18059 Rostock Germany
| | - Lars‐Erik Meyer
- Biocatalytic Synthesis Group, Institute of ChemistryUniversity of Rostock A-Einstein-Str. 3A 18059 Rostock Germany
| | - Jan von Langermann
- Biocatalytic Synthesis Group, Institute of ChemistryUniversity of Rostock A-Einstein-Str. 3A 18059 Rostock Germany
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135
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Schmieg B, Döbber J, Kirschhöfer F, Pohl M, Franzreb M. Advantages of Hydrogel-Based 3D-Printed Enzyme Reactors and Their Limitations for Biocatalysis. Front Bioeng Biotechnol 2019; 6:211. [PMID: 30693280 PMCID: PMC6339869 DOI: 10.3389/fbioe.2018.00211] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 12/21/2018] [Indexed: 11/16/2022] Open
Abstract
The development of process steps catalyzed by immobilized enzymes usually encompasses the screening of enzyme variants, as well as the optimization of immobilization protocols and process parameters. Direct immobilization of biocatalysts by physical entrapment into hydrogels can be applied to reduce the effort required for immobilization, as the enzyme-specific optimization of the immobilization procedure is omitted. Physical entrapment is applicable for purified enzymes as well as crude cell extracts. Therefore, it can be used to quickly assess and compare activities of immobilized enzymes. For the application in flow reactors, we developed 3D-printed hydrogel lattices for enzyme entrapment as well as matching housings, also manufactured by 3D-printing. Testing the resulting enzyme reactors for three different enzymes, namely alcohol dehydrogenase from Lactobacillus brevis, benzoylformate decarboxylase from Pseudomonas putida and β-galactosidase from Aspergillus oryzae, and four different enzymatic reactions showed the broad applicability of the approach but also its limitations. The activity of the immobilized biocatalysts was measured in batch experiments and compared to the kinetics of the respective free enzymes in solution. This comparison yields an effectiveness factor, which is a key figure to describe the extent the immobilized catalyst is effectively utilized. For the examined systems the effectiveness factor ranged between 6 and 14% and decreased with increasing absolute activity of the entrapped enzymes due to mass transfer limitations. To test the suitability of the hydrogel lattices for continuous operation, they were inserted into 3D-printed reactor housings and operated at constant flow. Stable product formation could be monitored over a period of 72 h for all four enzymatic systems, including two reactions with redox cofactor regeneration. Comparing calculated and experimental conversion in the continuous setup, higher values of the effectiveness factor in batch experiments also hint at good performance in continuous flow. This can be used to optimize complex biocatalytic reactions on a small scale.
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Affiliation(s)
- Barbara Schmieg
- Karlsruhe Institute of Technology, Institute of Functional Interfaces, Karlsruhe, Germany
| | - Johannes Döbber
- Forschungszentrum Jülich GmbH, IBG-1: Biotechnology, Jülich, Germany
| | - Frank Kirschhöfer
- Karlsruhe Institute of Technology, Institute of Functional Interfaces, Karlsruhe, Germany
| | - Martina Pohl
- Forschungszentrum Jülich GmbH, IBG-1: Biotechnology, Jülich, Germany
| | - Matthias Franzreb
- Karlsruhe Institute of Technology, Institute of Functional Interfaces, Karlsruhe, Germany
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136
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Höfler GT, But A, Hollmann F. Haloperoxidases as catalysts in organic synthesis. Org Biomol Chem 2019; 17:9267-9274. [DOI: 10.1039/c9ob01884k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The current state-of-the-art of haloperoxidase catalysis in organic synthesis for halogenation reactions is presented in this review.
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Affiliation(s)
- Georg T. Höfler
- Department of Biotechnology
- Delft University of Technology
- 2629 HZ Delft
- The Netherlands
| | - Andrada But
- Department of Biotechnology
- Delft University of Technology
- 2629 HZ Delft
- The Netherlands
| | - Frank Hollmann
- Department of Biotechnology
- Delft University of Technology
- 2629 HZ Delft
- The Netherlands
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137
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Hoschek A, Schmid A, Bühler B. In Situ O2Generation for Biocatalytic Oxyfunctionalization Reactions. ChemCatChem 2018. [DOI: 10.1002/cctc.201801262] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Anna Hoschek
- Department Solar MaterialsHelmholtz-Centre for Environmental Research, UFZ Permoserstrasse 15 Leipzig 04318 Germany
| | - Andreas Schmid
- Department Solar MaterialsHelmholtz-Centre for Environmental Research, UFZ Permoserstrasse 15 Leipzig 04318 Germany
| | - Bruno Bühler
- Department Solar MaterialsHelmholtz-Centre for Environmental Research, UFZ Permoserstrasse 15 Leipzig 04318 Germany
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138
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Noro J, Reis RL, Cavaco-Paulo A, Silva C. Ultrasound-assisted biosynthesis of novel methotrexate-conjugates. ULTRASONICS SONOCHEMISTRY 2018; 48:51-56. [PMID: 30080579 DOI: 10.1016/j.ultsonch.2018.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/04/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
New methotrexate-acylglycerols and methotrexate-cyclodextrins (α, β and γ-CD) conjugates were obtained via esterification or transesterification reactions. All reactions were catalysed by esterases namely immobilized Lipase from Candida antarctica B and Lipase from Thermomyces lanuginosus. The use of ultrasound to assist the reactions revealed to be a key factor to obtain high conversion yields on both MTX conjugates. Transesterification reactions including long chain triacylglycerols were only successful when ultrasound was applied. In cyclodextrins esterification a higher number of MTX molecules was also linked to cyclodextrins when ultrasound was used. All the conjugates were characterized by MALDI-TOF and NMR spectroscopy.
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Affiliation(s)
- Jennifer Noro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Ave Park, 4805-016 Taipas, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Artur Cavaco-Paulo
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Carla Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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139
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Transforming food waste: how immobilized enzymes can valorize waste streams into revenue streams. NPJ Sci Food 2018; 2:19. [PMID: 31304269 PMCID: PMC6550151 DOI: 10.1038/s41538-018-0028-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 10/11/2018] [Indexed: 11/08/2022] Open
Abstract
Food processing generates byproduct and waste streams rich in lipids, carbohydrates, and proteins, which contribute to its negative environmental impact. However, these compounds hold significant economic potential if transformed into revenue streams such as biofuels and ingredients. Indeed, the high protein, sugar, and fat content of many food waste streams makes them ideal feedstocks for enzymatic valorization. Compared to synthetic catalysts, enzymes have higher specificity, lower energy requirement, and improved environmental sustainability in performing chemical transformations, yet their poor stability and recovery limits their performance in their native state. This review article surveys the current state-of-the-art in enzyme stabilization & immobilization technologies, summarizes opportunities in enzyme-catalyzed valorization of waste streams with emphasis on streams rich in mono- and disaccharides, polysaccharides, lipids, and proteins, and highlights challenges and opportunities in designing commercially translatable immobilized enzyme systems towards the ultimate goals of sustainable food production and reduced food waste.
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140
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Rice Husk as an Inexpensive Renewable Immobilization Carrier for Biocatalysts Employed in the Food, Cosmetic and Polymer Sectors. Catalysts 2018. [DOI: 10.3390/catal8100471] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The high cost and environmental impact of fossil-based organic carriers represent a critical bottleneck to their use in large-scale industrial processes. The present study demonstrates the applicability of rice husk as inexpensive renewable carrier for the immobilization of enzymes applicable sectors where the covalent anchorage of the protein is a pre-requisite for preventing protein contamination while assuring the recyclability. Rice husk was oxidized and then functionalized with a di-amino spacer. The morphological characterization shed light on the properties that affect the functionalization processes. Lipase B from Candida antarctica (CaLB) and two commercial asparaginases were immobilized covalently achieving higher immobilization yield than previously reported. All enzymes were immobilized also on commercial epoxy methacrylic resins and the CaLB immobilized on rice husk demonstrated a higher efficiency in the solvent-free polycondensation of dimethylitaconate. CaLB on rice husk appears particularly suitable for applications in highly viscous processes because of the unusual combination of its low density and remarkable mechanical robustness. In the case of the two asparaginases, the biocatalyst immobilized on rice husk performed in aqueous solution at least as efficiently as the enzyme immobilized on methacrylic resins, although the rice husk loaded a lower amount of protein.
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141
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Su CH, Nguyen HC, Nguyen ML, Tran PT, Wang FM, Guan YL. Liquid lipase-catalyzed hydrolysis of gac oil for fatty acid production: Optimization using response surface methodology. Biotechnol Prog 2018; 34:1129-1136. [PMID: 30281955 DOI: 10.1002/btpr.2714] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 08/19/2018] [Accepted: 08/24/2018] [Indexed: 01/08/2023]
Abstract
Fatty acids are valuable products because they have wide industrial applications in the manufacture of detergents, cosmetics, food, and various biomedical applications. In enzyme-catalyzed hydrolysis, the use of immobilized lipase results in high production cost. To address this problem, Eversa Transform lipase, a new and low-cost liquid lipase formulation, was used for the first time in oil hydrolysis with gac oil as a triglyceride source in this study. Response surface methodology was employed to optimize the reaction conditions and establish a reliable mathematical model for predicting hydrolysis yield. A maximal yield of 94.16% was obtained at a water-to-oil molar ratio of 12.79:1, reaction temperature of 38.9 °C, enzyme loading of 13.88%, and reaction time of 8.41 h. Under this optimal reaction condition, Eversa Transform lipase could be reused for up to eight cycles without significant loss in enzyme activity. This study indicates that the use of liquid Eversa Transform lipase in enzyme-catalyzed oil hydrolysis could be a promising and cheap method of fatty acid production. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 2018.
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Affiliation(s)
- Chia-Hung Su
- Graduate School of Biochemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Hoang Chinh Nguyen
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - My Linh Nguyen
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Phung Thanh Tran
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Fu-Ming Wang
- Graduate Inst. of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Yu-Lin Guan
- Graduate School of Biochemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
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142
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Abstract
In the period 1985 to 1995 applications of biocatalysis, driven by the need for more sustainable manufacture of chemicals and catalytic, (enantio)selective methods for the synthesis of pharmaceutical intermediates, largely involved the available hydrolases. This was followed, in the next two decades, by revolutionary developments in protein engineering and directed evolution for the optimisation of enzyme function and performance that totally changed the biocatalysis landscape. In the same period, metabolic engineering and synthetic biology revolutionised the use of whole cell biocatalysis in the synthesis of commodity chemicals by fermentation. In particular, developments in the enzymatic enantioselective synthesis of chiral alcohols and amines are highlighted. Progress in enzyme immobilisation facilitated applications under harsh industrial conditions, such as in organic solvents. The emergence of biocatalytic or chemoenzymatic cascade processes, often with co-immobilised enzymes, has enabled telescoping of multi-step processes. Discovering and inventing new biocatalytic processes, based on (meta)genomic sequencing, evolving enzyme promiscuity, chemomimetic biocatalysis, artificial metalloenzymes, and the introduction of non-canonical amino acids into proteins, are pushing back the limits of biocatalysis function. Finally, the integral role of biocatalysis in developing a biobased carbon-neutral economy is discussed.
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Affiliation(s)
- Roger A Sheldon
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa.
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143
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Antonopoulou I, Iancu L, Jütten P, Piechot A, Rova U, Christakopoulos P. Screening of novel feruloyl esterases from Talaromyces wortmannii for the development of efficient and sustainable syntheses of feruloyl derivatives. Enzyme Microb Technol 2018; 120:124-135. [PMID: 30396393 DOI: 10.1016/j.enzmictec.2018.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 01/22/2023]
Abstract
The feruloyl esterases Fae125, Fae7262 and Fae68 from Talaromyces wortmannii were screened in 10 different solvent: buffer systems in terms of residual hydrolytic activity and of the ability for the transesterification of vinyl ferulate with prenol or l-arabinose. Among the tested enzymes, the acetyl xylan-related Fae125 belonging to the phylogenetic subfamily 5 showed highest yield and selectivity for both products in alkane: buffer systems (n-hexane or n-octane). Response surface methodology, based on a 5-level and 6-factor central composite design, revealed that the substrate molar ratio and the water content were the most significant variables for the bioconversion yield and selectivity. The effect of agitation, the possibility of DMSO addition and the increase of donor concentration were investigated. After optimization, competitive transesterification yields were obtained for prenyl ferulate (87.5-92.6%) and l-arabinose ferulate (56.2-61.7%) at reduced reaction times (≤24 h) resulting in good productivities (>1 g/L/h, >300 kg product/kg FAE). The enzyme could be recycled for six consecutive cycles retaining 66.6% of the synthetic activity and 100% of the selectivity.
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Affiliation(s)
- Io Antonopoulou
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden
| | - Laura Iancu
- Dupont Industrial Biosciences, Nieuwe Kanaal 7-S, 6709 PA, Wageningen, The Netherlands
| | - Peter Jütten
- Taros Chemicals GmbH & Co KG, Emil-Figge-Str. 76a, 44227, Dortmund, Germany
| | - Alexander Piechot
- Taros Chemicals GmbH & Co KG, Emil-Figge-Str. 76a, 44227, Dortmund, Germany
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden.
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144
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Nordblad M, Gomes MD, Meissner MP, Ramesh H, Woodley JM. Scoping Biocatalyst Performance Using Reaction Trajectory Analysis. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00119] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Mathias Nordblad
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Mafalda Dias Gomes
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Murray P. Meissner
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, DK-2800 Kgs. Lyngby, Denmark
| | - Hemalata Ramesh
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, DK-2800 Kgs. Lyngby, Denmark
| | - John M. Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, Søltofts Plads, DK-2800 Kgs. Lyngby, Denmark
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145
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Dong J, Fernández‐Fueyo E, Hollmann F, Paul CE, Pesic M, Schmidt S, Wang Y, Younes S, Zhang W. Biocatalytic Oxidation Reactions: A Chemist's Perspective. Angew Chem Int Ed Engl 2018; 57:9238-9261. [PMID: 29573076 PMCID: PMC6099261 DOI: 10.1002/anie.201800343] [Citation(s) in RCA: 276] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 01/25/2023]
Abstract
Oxidation chemistry using enzymes is approaching maturity and practical applicability in organic synthesis. Oxidoreductases (enzymes catalysing redox reactions) enable chemists to perform highly selective and efficient transformations ranging from simple alcohol oxidations to stereoselective halogenations of non-activated C-H bonds. For many of these reactions, no "classical" chemical counterpart is known. Hence oxidoreductases open up shorter synthesis routes based on a more direct access to the target products. The generally very mild reaction conditions may also reduce the environmental impact of biocatalytic reactions compared to classical counterparts. In this Review, we critically summarise the most important recent developments in the field of biocatalytic oxidation chemistry and identify the most pressing bottlenecks as well as promising solutions.
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Affiliation(s)
- JiaJia Dong
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Elena Fernández‐Fueyo
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Frank Hollmann
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Caroline E. Paul
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Milja Pesic
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Sandy Schmidt
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Yonghua Wang
- School of Food Science and EngineeringSouth China University of TechnologyGuangzhou510640P. R. China
| | - Sabry Younes
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
| | - Wuyuan Zhang
- Department of BiotechnologyDelft University of Technologyvan der Maasweg 92629HZDelftThe Netherlands
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146
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Optimisation of enzyme cascades for chiral amino alcohol synthesis in aid of host cell integration using a statistical experimental design approach. J Biotechnol 2018; 281:150-160. [PMID: 30009844 DOI: 10.1016/j.jbiotec.2018.07.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 01/20/2023]
Abstract
Chiral amino alcohols are compounds of pharmaceutical interest as they are building blocks of sphingolipids, antibiotics, and antiviral glycosidase inhibitors. Due to the challenges of chemical synthesis we recently developed two TK-TAm reaction cascades using natural and low cost feedstocks as substrates: a recycling cascade comprising of 2 enzymes and a sequential 3-step enzyme cascade yielding 30% and 1% conversion, respectively. In order to improve the conversion yield and aid the future host strain engineering for whole cell biocatalysis, we used a combination of microscale experiments and statistical experimental design. For this we implemented a full factorial design to optimise pH, temperature and buffer type, followed by the application of Response Surface Methodology for the optimisation of substrates and enzymes concentrations. Using purified enzymes we achieved 60% conversion for the recycling cascade and 3-fold improvement using the sequential pathway. Based on the results, limiting steps and individual requirements for host cell metabolic integration were identified expanding the understanding of the cascades without implementing extensive optimisation modelling. Therefore, the approach described here is well suited for optimising reaction conditions as well as defining the relative enzyme expression levels required for construction of microbial cell factories.
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147
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Optimization and in Silico Analysis of a Cold-Adapted Lipase from an Antarctic Pseudomonas sp. Strain AMS8 Reaction in Triton X-100 Reverse Micelles. Catalysts 2018. [DOI: 10.3390/catal8070289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A moderate yield of a purified enzyme can be achieved by using the simple technique of reverse micellar extraction (RME). RME is a liquid–liquid extraction method that uses a surfactant and an organic solvent to extract biomolecules. Instead of traditional chromatographic purification methods, which are tedious and expensive, RME using the nonionic surfactant Triton X-100 and toluene is used as an alternative purification technique to purify a recombinant cold-adapted lipase, AMS8. Various process parameters were optimized to maximize the activity recovery of the AMS8 lipase. The optimal conditions were found to be 50 mM sodium phosphate buffer, pH 7, 0.125 M NaCl, and 0.07 M Triton X-100 in toluene at 10 °C. Approximately 56% of the lipase activity was successfully recovered. Structural analysis of the lipase in a reverse micelle (RM) was performed using an in silico approach. The predicted model of AMS8 lipase was simulated in the Triton X-100/toluene reverse micelles from 5 to 40 °C. The lid 2 was slightly opened at 10 °C. However, the secondary structure of AMS8 was most affected in the non-catalytic domain compared to the catalytic domain, with an increased coil conformation. These results suggest that an AMS8 lipase can be extracted using Triton X-100/water/toluene micelles at low temperature. This RME approach will be an important tool for the downstream processing of recombinant cold-adapted lipases.
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148
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Bugada LF, Smith MR, Wen F. Engineering Spatially Organized Multienzyme Assemblies for Complex Chemical Transformation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01883] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Luke F. Bugada
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mason R. Smith
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Fei Wen
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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149
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Dong J, Fernández-Fueyo E, Hollmann F, Paul CE, Pesic M, Schmidt S, Wang Y, Younes S, Zhang W. Biokatalytische Oxidationsreaktionen - aus der Sicht eines Chemikers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800343] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- JiaJia Dong
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Elena Fernández-Fueyo
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Frank Hollmann
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Caroline E. Paul
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Milja Pesic
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Sandy Schmidt
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Yonghua Wang
- School of Food Science and Engineering; South China University of Technology; Guangzhou 510640 P. R. China
| | - Sabry Younes
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
| | - Wuyuan Zhang
- Department of Biotechnology; Delft University of Technology; van der Maasweg 9 2629HZ Delft Niederlande
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150
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Development of microreactors with surface-immobilized biocatalysts for continuous transamination. N Biotechnol 2018; 47:18-24. [PMID: 29758351 DOI: 10.1016/j.nbt.2018.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 05/10/2018] [Accepted: 05/10/2018] [Indexed: 12/12/2022]
Abstract
The industrial importance of optically pure compounds has thrown a spotlight on ω-transaminases that have shown a high potential for the synthesis of bioactive compounds with a chiral amine moiety. The implementation of biocatalysts in industrial processes relies strongly on fast and cost effective process development, including selection of a biocatalyst form and the strategy for its immobilization. Here, microscale reactors with selected surface-immobilized amine-transaminase (ATA) in various forms are described as platforms for high-throughput process development. Wild type ATA (ATA-wt) from a crude cell extract, as well as Escherichia coli cells intracellularly overexpressing the enzyme, were immobilized on the surfaces of meander microchannels of disposable plastics by means of reactor surface silanization and glutaraldehyde bonding. In addition, a silicon/glass microchannel reactor was used for immobilization of an ATA-wt, genetically engineered to contain a silica-binding module (SBM) at the N-terminus (N-SBM-ATA-wt), leading to immobilization on the non-modified inner microchannel surface. Microreactors with surface-immobilized biocatalysts were coupled with a quenching system and at-line HPLC analytics and evaluated based on continuous biotransformation, yielding acetophenone and l-alanine. E. coli cells and N-SBM-ATA-wt were efficiently immobilized and yielded a volumetric productivity of up to 14.42 g L-1 h-1, while ATA-wt small load resulted in two orders of magnitude lower productivity. The miniaturized reactors further enabled in-operando characterization of biocatalyst stability, crucial for successful transfer to a production scale.
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