1
|
Ferrero GO, Faba EMS, Eimer GA. Biodiesel production from alternative raw materials using a heterogeneous low ordered biosilicified enzyme as biocatalyst. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:67. [PMID: 33722279 PMCID: PMC7962227 DOI: 10.1186/s13068-021-01917-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 03/01/2021] [Indexed: 05/07/2023]
Abstract
BACKGROUND Cumulative reported evidence has indicated that renewable feedstocks are a promising alternative source to fossil platforms for the production of fuels and chemicals. In that regard, the development of new, highly active, selective, and easy to recover and reuse catalysts for biomass conversions is urgently needed. The combination of enzymatic and inorganic heterogeneous catalysis generates an unprecedented platform that combines the advantages of both, the catalytic efficiency and selectivity of enzymes with the ordered structure, high porosity, mechanical, thermal and chemical resistance of mesoporous materials to obtain enzymatic heterogeneous catalysts. Enzymatic mineralization with an organic silicon precursor (biosilicification) is a promising and emerging approach for the generation of solid hybrid biocatalysts with exceptional stability under severe use conditions. Herein, we assessed the putative advantages of the biosilicification technology for developing an improved efficient and stable biocatalyst for sustainable biofuel production. RESULTS A series of solid enzymatic catalysts denominated LOBE (low ordered biosilicified enzyme) were synthesized from Pseudomonas fluorescens lipase and tetraethyl orthosilicate. The microscopic structure and physicochemical properties characterization revealed that the enzyme formed aggregates that were contained in the heart of silicon-covered micelles, providing active sites with the ability to process different raw materials (commercial sunflower and soybean oils, Jatropha excisa oil, waste frying oil, acid oil from soybean soapstock, and pork fat) to produce first- and second-generation biodiesel. Ester content ranged from 81 to 93% wt depending on the raw material used for biodiesel synthesis. CONCLUSIONS A heterogeneous enzymatic biocatalyst, LOBE4, for efficient biodiesel production was successfully developed in a single-step synthesis reaction using biosilicification technology. LOBE4 showed to be highly efficient in converting refined, non-edible and residual oils (with high water and free fatty acid contents) and ethanol into biodiesel. Thus, LOBE4 emerges as a promising tool to produce second-generation biofuels, with significant implications for establishing a circular economy and reducing the carbon footprint.
Collapse
Affiliation(s)
- Gabriel Orlando Ferrero
- CITeQ-UTN-CONICET, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López Esq. Cruz Roja, Ciudad Universitaria, 5016, Córdoba, Argentina.
| | - Edgar Maximiliano Sánchez Faba
- CITeQ-UTN-CONICET, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López Esq. Cruz Roja, Ciudad Universitaria, 5016, Córdoba, Argentina
| | - Griselda Alejandra Eimer
- CITeQ-UTN-CONICET, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López Esq. Cruz Roja, Ciudad Universitaria, 5016, Córdoba, Argentina.
| |
Collapse
|
2
|
Ross ML, Kunkel J, Long S, Asuri P. Combined Effects of Confinement and Macromolecular Crowding on Protein Stability. Int J Mol Sci 2020; 21:ijms21228516. [PMID: 33198190 PMCID: PMC7697604 DOI: 10.3390/ijms21228516] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 01/18/2023] Open
Abstract
Confinement and crowding have been shown to affect protein fates, including folding, functional stability, and their interactions with self and other proteins. Using both theoretical and experimental studies, researchers have established the independent effects of confinement or crowding, but only a few studies have explored their effects in combination; therefore, their combined impact on protein fates is still relatively unknown. Here, we investigated the combined effects of confinement and crowding on protein stability using the pores of agarose hydrogels as a confining agent and the biopolymer, dextran, as a crowding agent. The addition of dextran further stabilized the enzymes encapsulated in agarose; moreover, the observed increases in enhancements (due to the addition of dextran) exceeded the sum of the individual enhancements due to confinement and crowding. These results suggest that even though confinement and crowding may behave differently in how they influence protein fates, these conditions may be combined to provide synergistic benefits for protein stabilization. In summary, our study demonstrated the successful use of polymer-based platforms to advance our understanding of how in vivo like environments impact protein function and structure.
Collapse
|
3
|
Sannino F, Costantini A, Ruffo F, Aronne A, Venezia V, Califano V. Covalent Immobilization of β-Glucosidase into Mesoporous Silica Nanoparticles from Anhydrous Acetone Enhances Its Catalytic Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E108. [PMID: 31948120 PMCID: PMC7022324 DOI: 10.3390/nano10010108] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/10/2019] [Accepted: 12/30/2019] [Indexed: 01/09/2023]
Abstract
An immobilization protocol of a model enzyme into silica nanoparticles was applied. This protocol exploited the use of the bifunctional molecule triethoxysilylpropylisocyanate (TEPI) for covalent binding through a linker of suitable length. The enzyme β-glucosidase (BG) was anchored onto wrinkled silica nanoparticles (WSNs). BG represents a bottleneck in the conversion of lignocellulosic biomass into biofuels through cellulose hydrolysis and fermentation. The key aspect of the procedure was the use of an organic solvent (anhydrous acetone) in which the enzyme was not soluble. This aimed to restrict its conformational changes and thus preserve its native structure. This approach led to a biocatalyst with improved thermal stability, characterized by high immobilization efficiency and yield. It was found that the apparent KM value was about half of that of the free enzyme. The Vmax was about the same than that of the free enzyme. The biocatalyst showed a high operational stability, losing only 30% of its activity after seven reuses.
Collapse
Affiliation(s)
- Filomena Sannino
- Department of Agricultural Sciences, Università degli Studi di Napoli Federico II, Via Università 100, 80055 Portici (Na), Italy;
| | - Aniello Costantini
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
| | - Francesco Ruffo
- Department of Chemical Science, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo via Cintia, 80126 Napoli, Italy;
| | - Antonio Aronne
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
| | - Virginia Venezia
- Department of Chemical Engineering, Materials and Industrial Production, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy; (A.A.); (V.V.)
| | | |
Collapse
|
4
|
Złotko K, Wiater A, Waśko A, Pleszczyńska M, Paduch R, Jaroszuk-Ściseł J, Bieganowski A. A Report on Fungal (1→3)-α-d-glucans: Properties, Functions and Application. Molecules 2019; 24:E3972. [PMID: 31684030 PMCID: PMC6864487 DOI: 10.3390/molecules24213972] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
The cell walls of fungi are composed of glycoproteins, chitin, and α- and β-glucans. Although there are many reports on β-glucans, α-glucan polysaccharides are not yet fully understood. This review characterizes the physicochemical properties and functions of (1→3)-α-d-glucans. Particular attention has been paid to practical application and the effect of glucans in various respects, taking into account unfavourable effects and potential use. The role of α-glucans in plant infection has been proven, and collected facts have confirmed the characteristics of Aspergillus fumigatus infection associated with the presence of glucan in fungal cell wall. Like β-glucans, there are now evidence that α-glucans can also stimulate the immune system. Moreover, α-d-glucans have the ability to induce mutanases and can thus decompose plaque.
Collapse
Affiliation(s)
- Katarzyna Złotko
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland.
| | - Adrian Wiater
- Department of Industrial and Environmental Microbiology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Adam Waśko
- Department of Biotechnology, Human Nutrition and Food Commodity Science, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland.
| | - Małgorzata Pleszczyńska
- Department of Industrial and Environmental Microbiology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Roman Paduch
- Department of Virology and Immunology, Maria Curie-Skłodowska University, ul. Akademicka 19, 20-033 Lublin, Poland.
- Department of General Ophthalmology, Medical University, Chmielna 1, 20-079 Lublin, Poland.
| | - Jolanta Jaroszuk-Ściseł
- Department of Industrial and Environmental Microbiology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Andrzej Bieganowski
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland.
| |
Collapse
|
5
|
Pavlovic M, Rouster P, Somosi Z, Szilagyi I. Horseradish peroxidase-nanoclay hybrid particles of high functional and colloidal stability. J Colloid Interface Sci 2018; 524:114-121. [PMID: 29635084 DOI: 10.1016/j.jcis.2018.04.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 02/07/2023]
Abstract
Highly stable dispersions of enzyme-clay nanohybrids of excellent horseradish peroxidase activity were developed. Layered double hydroxide nanoclay was synthesized and functionalized with heparin polyelectrolyte to immobilize the horseradish peroxidase enzyme. The formation of a saturated heparin layer on the platelets led to charge inversion of the positively charged bare nanoclay and to highly stable aqueous dispersions. Great affinity of the enzyme to the surface modified platelets resulted in strong horseradish peroxidase adsorption through electrostatic and hydrophobic interactions as well as hydrogen bonding network and prevented enzyme leakage from the obtained material. The enzyme kept its functional integrity upon immobilization and showed excellent activity in decomposition of hydrogen peroxide and oxidation of an aromatic compound in the test reactions. In addition, remarkable long term functional stability of the enzyme-nanoclay hybrid was observed making the developed colloidal system a promising antioxidant candidate in biomedical treatments and industrial processes.
Collapse
Affiliation(s)
- Marko Pavlovic
- Department of Inorganic and Analytical Chemistry, University of Geneva, CH-1205 Geneva, Switzerland
| | - Paul Rouster
- Institute of Condensed Matter and Nanosciences - Bio and Soft Matter, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium
| | - Zoltan Somosi
- MTA-SZTE Lendület Biocolloids Research Group, University of Szeged, H-6720 Szeged, Hungary
| | - Istvan Szilagyi
- MTA-SZTE Lendület Biocolloids Research Group, University of Szeged, H-6720 Szeged, Hungary; Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary.
| |
Collapse
|
6
|
Wang J, Li W, Niu D, Singh S, Lu F, Liu X. Improved synthesis of isomaltooligosaccharides using immobilized α-glucosidase in organic-aqueous media. Food Sci Biotechnol 2017; 26:731-738. [PMID: 30263598 DOI: 10.1007/s10068-017-0092-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 02/16/2017] [Accepted: 02/27/2017] [Indexed: 11/29/2022] Open
Abstract
α-Glucosidase was immobilized onto an epoxy-activated resin (Eupergit C) to catalyze maltose into isomaltooligosaccharides (IMO), and then the effects of organic-aqueous media on the enzymatic properties of immobilized α-glucosidase were examined. An immobilization efficiency of 79.61% was obtained under the condition of pH 6.0, ionic strength of 2.0 M, and 30 mg of protein/g of resin. The butyl acetate-aqueous biphasic system was found to significantly improve the catalytic activity of the immobilized enzyme and the yield of IMO. The highest yield of IMO (50.83%, w/w) was obtained at pH 4.5 and 55 °C in a butyl acetate/buffer system (25:75, v/v). In addition, the immobilized enzyme particles were distributed into the organic phase after the completion of transglycosylation, which facilitates the separation and recycling use of the immobilized enzyme. Immobilized α-glucosidase retains a robust reusability in this continuous operation model. The present findings are of potential in improving the IMO manufacturing process.
Collapse
Affiliation(s)
- Jun Wang
- 1Department of Biological Chemical Engineering, College of Chemical Engineering and Material Sciences, Tianjin University of Science and Technology, Tianjin, 300457 China.,5College of Food Science and Engineering, Shanxi Agricultural University, Taigu, 030801 China
| | - Wei Li
- 2College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 China
| | - Dandan Niu
- 2College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 China.,3Fujian Provincial Key Laboratory of Marine Enzyme Engineering, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350116 China
| | - Suren Singh
- 4Department of Biotechnology and Food Technology, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4001 South Africa
| | - Fuping Lu
- 2College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457 China
| | - Xiaoguang Liu
- 1Department of Biological Chemical Engineering, College of Chemical Engineering and Material Sciences, Tianjin University of Science and Technology, Tianjin, 300457 China
| |
Collapse
|
7
|
Pavlovic M, Rouster P, Szilagyi I. Synthesis and formulation of functional bionanomaterials with superoxide dismutase activity. NANOSCALE 2017; 9:369-379. [PMID: 27924343 DOI: 10.1039/c6nr07672f] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Layered double hydroxide (LDH) nanoparticles were prepared and used as solid support for superoxide dismutase (SOD) enzymes. Structural features were studied by XRD, spectroscopic methods (IR, UV-Vis and fluorescence) and TEM, while colloidal stability of the obtained materials was investigated by electrophoresis and light scattering in aqueous dispersions. The SOD quantitatively adsorbed on the LDH by electrostatic and hydrophobic interactions and kept its structural integrity upon immobilization. The composite material showed moderate resistance against salt-induced aggregation in dispersions, therefore, heparin polyelectrolyte was used to improve the colloidal stability of the system. Heparin of highly negative line charge density strongly adsorbed on the oppositely charged hybrid particles leading to charge neutralization and overcharging at appropriate polyelectrolyte loading. Full coverage of the composite platelets with heparin resulted in highly stable dispersions, which contained only primary particles even at elevated ionic strengths. Our results indicate that the developed bionanocomposite of considerable enzymatic function is a suitable candidate for applications, wherever stable dispersions of antioxidant activity are required for instance in biomedical treatments or in chemical manufacturing processes.
Collapse
Affiliation(s)
- Marko Pavlovic
- Department of Inorganic and Analytical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1205 Geneva, Switzerland.
| | | | | |
Collapse
|
8
|
Johns MA, Bernardes A, De Azevêdo ER, Guimarães FEG, Lowe JP, Gale EM, Polikarpov I, Scott JL, Sharma RI. On the subtle tuneability of cellulose hydrogels: implications for binding of biomolecules demonstrated for CBM 1. J Mater Chem B 2017; 5:3879-3887. [DOI: 10.1039/c7tb00176b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Choice of molecular probe for determining porosity, surface area, or binding in never-dried cellulose hydrogels is critical to discern differences in structure.
Collapse
Affiliation(s)
- M. A. Johns
- Centre for Sustainable Chemical Technologies
- University of Bath
- UK
- Department of Chemical Engineering
- University of Bath
| | - A. Bernardes
- São Carlos Institute of Physics
- University of São Paulo
- Brazil
| | | | | | - J. P. Lowe
- Department of Chemistry
- University of Bath
- UK
| | - E. M. Gale
- Centre for Sustainable Chemical Technologies
- University of Bath
- UK
- Department of Chemistry
- University of Bath
| | - I. Polikarpov
- São Carlos Institute of Physics
- University of São Paulo
- Brazil
| | - J. L. Scott
- Centre for Sustainable Chemical Technologies
- University of Bath
- UK
- Department of Chemistry
- University of Bath
| | - R. I. Sharma
- Centre for Sustainable Chemical Technologies
- University of Bath
- UK
- Department of Chemical Engineering
- University of Bath
| |
Collapse
|
9
|
Martínez Peralta ST, Ramínez Vargas E. Determinación del contenido extra e intracelular de algunas enzimas líticas relacionadas con pared celular en raíces de clavel (Dianthus caryophyllus L.). REVISTA COLOMBIANA DE QUÍMICA 2016. [DOI: 10.15446/rev.colomb.quim.v45n2.60370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
En el presente trabajo se verificó la presencia de algunas enzimas relacionadas con la pared celular vegetal (poligalacturonasa, pectato liasa, proteasa y xilanasa) en raíces de clavel (Dianthus caryophyllus L.). Así mismo, se determinaron los niveles de actividad de las mismas. Estos niveles se analizaron en diferentes espacios celulares: en el fluido intercelular que hace parte del apoplasto, en el simplasto y en el tejido total de las raíces de clavel (apoplasto y simplasto).Para extraer el fluido intercelular, se ensayaron dos metodologías. Para obtener el contenido intracelular (simplasto) y el extracto total (apoplasto y simplasto) en raíces de clavel se ensayaron tres metodologías que utilizaban como solución i) extractante buffer fosfato, ii) buffer fosfato con PVPP y iii) lavados con acetona a las raíces de clavel, antes de la extracción con buffer fosfatos. Los resultados mostraron el efecto de las diferentes soluciones en las actividades enzimáticas y en el contenido de proteína. Se propuso una de estas metodologías para extraer las cuatro enzimas en un único paso y realizar análisis comparativo de actividad enzimática.
Collapse
|
10
|
Paredes Doig AL, Sun Kou MDR, Picasso Escobar G, Doig Camino E, Comina G. Implementación y evaluación de una nariz electrónica para la detección de alcoholes lineales. REVISTA COLOMBIANA DE QUÍMICA 2016. [DOI: 10.15446/rev.colomb.quim.v45n2.60393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Se desarrolló una nariz electrónica que permite la detección de alcoholes de manera sencilla y económica en comparación con las narices electrónicas tradicionales. Está basada en cuatro sensores de gas de SnO2 (dos comerciales y dos fabricados en el laboratorio), un sistema neumático irregular, un hardware y software para adquisición de datos y un software de reconocimiento de patrones. Se evaluó el comportamiento de la nariz y las condiciones de trabajo con muestras de vapor de alcoholes (metanol, etanol, n-butanol y 1-octanol) y se determinó que los alcoholes se pueden detectar con el arreglo de sensores preparado y pueden diferenciarse entre sí haciendo uso del análisis estadístico de componentes principales (PCA). El orden de detección encontrado para los alcoholes lineales fue el siguiente: metanol > etanol > n-butanol > 1-octanol. Se encontró también que haciendo uso del análisis de componentes principales (PCA) y realizando una normalización de los datos en el software de reconocimiento de patrones, la varianza total de las muestras también aumenta del 76% al 85%. Esto demuestra que una nariz simple y económica puede clasificar bien las muestras evaluadas.
Collapse
|
11
|
Canale TD, Sen D. Hemin-utilizing G-quadruplex DNAzymes are strongly active in organic co-solvents. Biochim Biophys Acta Gen Subj 2016; 1861:1455-1462. [PMID: 27856300 DOI: 10.1016/j.bbagen.2016.11.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/11/2016] [Accepted: 11/13/2016] [Indexed: 01/11/2023]
Abstract
The widespread use of organic solvents in industrial processes has focused in recent years on the utility of "green" solvents - those with less harmful environmental, health, and safety properties - such as methanol and formamide. However, protein enzymes, regarded as green catalysts, are often incompatible with organic solvents. Herein, we have explored the oxidative properties of a Fe(III)-heme, or hemin, utilizing catalytic DNA (heme·DNAzyme) in different green solvent-water mixtures. We find that the peroxidase and peroxygenase activities of the heme·DNAzyme are strongly enhanced in 20-30% v/v methanol or formamide, relative to water alone. Protic solvent content of >30% v/v gradually diminishes heme·DNAzyme catalytic activity; however, the heme·DNAzyme is still active in as high as 80% v/v methanol. In contrast to protic solvents, aqueous dimethylformamide solutions largely inhibit heme·DNAzyme activity. In view of the strong catalytic activity of heme·DNAzyme in aqueous methanol, we were able to determine that a 60% v/v methanol-water mixture gives the most optimal yield of the dibenzothiophene sulfoxide (DBTO) oxidation product of petroleum-derived dibenzothiophene (DBT). The high product yield reflects both DNAzyme catalysis and a high substrate availability. Overall, these results emphasize the excellent promise of G-quadruplex forming DNA catalysts in application to "greener" industrial chemistry. This article is part of a Special Issue entitled "G-quadruplex" Guest Editor: Dr. Concetta Giancola and Dr. Daniela Montesarchio.
Collapse
Affiliation(s)
- Thomas D Canale
- Department of Molecular Biology & Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Dipankar Sen
- Department of Molecular Biology & Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada; Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada.
| |
Collapse
|
12
|
Karita S. Carbohydrate-Binding Modules in Plant Cell Wall-Degrading Enzymes. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1403.1j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
13
|
|
14
|
Kumar A, Zhang S, Wu G, Wu CC, Chen J, Baskaran R, Liu Z. Cellulose binding domain assisted immobilization of lipase (GSlip–CBD) onto cellulosic nanogel: characterization and application in organic medium. Colloids Surf B Biointerfaces 2015; 136:1042-50. [DOI: 10.1016/j.colsurfb.2015.11.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/31/2015] [Accepted: 11/02/2015] [Indexed: 01/18/2023]
|
15
|
Barbosa O, Ortiz C, Berenguer-Murcia Á, Torres R, Rodrigues RC, Fernandez-Lafuente R. Strategies for the one-step immobilization–purification of enzymes as industrial biocatalysts. Biotechnol Adv 2015; 33:435-56. [DOI: 10.1016/j.biotechadv.2015.03.006] [Citation(s) in RCA: 481] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 01/06/2023]
|
16
|
Structural insights into methanol-stable variants of lipase T6 from Geobacillus stearothermophilus. Appl Microbiol Biotechnol 2015; 99:9449-61. [DOI: 10.1007/s00253-015-6700-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 05/07/2015] [Accepted: 05/16/2015] [Indexed: 10/23/2022]
|
17
|
Kopka B, Diener M, Wirtz A, Pohl M, Jaeger KE, Krauss U. Purification and simultaneous immobilization of Arabidopsis thaliana hydroxynitrile lyase using a family 2 carbohydrate-binding module. Biotechnol J 2015; 10:811-9. [PMID: 25755120 DOI: 10.1002/biot.201400786] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/13/2015] [Accepted: 03/04/2015] [Indexed: 11/12/2022]
Abstract
Tedious, time- and labor-intensive protein purification and immobilization procedures still represent a major bottleneck limiting the widespread application of enzymes in synthetic chemistry and industry. We here exemplify a simple strategy for the direct site-specific immobilization of proteins from crude cell extracts by fusion of a family 2 carbohydrate-binding module (CBM) derived from the exoglucanase/xylanase Cex from Cellulomonas fimi to a target enzyme. By employing a tripartite fusion protein consisting of the CBM, a flavin-based fluorescent protein (FbFP), and the Arabidopsis thaliana hydroxynitrile lyase (AtHNL), binding to cellulosic carrier materials can easily be monitored via FbFP fluorescence. Adsorption properties (kinetics and quantities) were studied for commercially available Avicel PH-101 and regenerated amorphous cellulose (RAC) derived from Avicel. The resulting immobilizates showed similar activities as the wild-type enzyme but displayed increased stability in the weakly acidic pH range. Finally, Avicel, RAC and cellulose acetate (CA) preparations were used for the synthesis of (R)-mandelonitrile in micro-aqueous methyl tert-butyl ether (MTBE) demonstrating the applicability and stability of the immobilizates for biotransformations in both aqueous and organic reaction systems.
Collapse
Affiliation(s)
- Benita Kopka
- Institut für Molekulare Enzymtechnologie, Heinrich-Heine-Universität Düsseldorf, Forschungszentrum Jülich, Jülich, Germany
| | | | | | | | | | | |
Collapse
|
18
|
Modification of Lysine Residues of Horseradish Peroxidase and Its Effect on Stability and Structure of the Enzyme. Appl Biochem Biotechnol 2014; 172:3558-69. [DOI: 10.1007/s12010-014-0756-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 01/21/2014] [Indexed: 10/25/2022]
|
19
|
Abstract
The immobilization of biomolecules onto cellulose paper turns this environmentally friendly material into a platform for diagnostic devices.
Collapse
Affiliation(s)
- Julie Credou
- CEA Saclay
- IRAMIS
- NIMBE
- LICSEN (Laboratory of Innovation in Surface Chemistry and Nanosciences)
- F-91191 Gif sur Yvette, France
| | - Thomas Berthelot
- CEA Saclay
- IRAMIS
- NIMBE
- LICSEN (Laboratory of Innovation in Surface Chemistry and Nanosciences)
- F-91191 Gif sur Yvette, France
| |
Collapse
|
20
|
Protein engineering by random mutagenesis and structure-guided consensus of Geobacillus stearothermophilus Lipase T6 for enhanced stability in methanol. Appl Environ Microbiol 2013; 80:1515-27. [PMID: 24362426 DOI: 10.1128/aem.03371-13] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The abilities of enzymes to catalyze reactions in nonnatural environments of organic solvents have opened new opportunities for enzyme-based industrial processes. However, the main drawback of such processes is that most enzymes have a limited stability in polar organic solvents. In this study, we employed protein engineering methods to generate a lipase for enhanced stability in methanol, which is important for biodiesel production. Two protein engineering approaches, random mutagenesis (error-prone PCR) and structure-guided consensus, were applied in parallel on an unexplored lipase gene from Geobacillus stearothermophilus T6. A high-throughput colorimetric screening assay was used to evaluate lipase activity after an incubation period in high methanol concentrations. Both protein engineering approaches were successful in producing variants with elevated half-life values in 70% methanol. The best variant of the random mutagenesis library, Q185L, exhibited 23-fold-improved stability, yet its methanolysis activity was decreased by one-half compared to the wild type. The best variant from the consensus library, H86Y/A269T, exhibited 66-fold-improved stability in methanol along with elevated thermostability (+4.3°C) and a 2-fold-higher fatty acid methyl ester yield from soybean oil. Based on in silico modeling, we suggest that the Q185L substitution facilitates a closed lid conformation that limits access for both the methanol and substrate excess into the active site. The enhanced stability of H86Y/A269T was a result of formation of new hydrogen bonds. These improved characteristics make this variant a potential biocatalyst for biodiesel production.
Collapse
|
21
|
Gericke M, Trygg J, Fardim P. Functional Cellulose Beads: Preparation, Characterization, and Applications. Chem Rev 2013; 113:4812-36. [DOI: 10.1021/cr300242j] [Citation(s) in RCA: 177] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Martin Gericke
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
| | - Jani Trygg
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
| | - Pedro Fardim
- Laboratory of Fibre and Cellulose Technology, Åbo Akademi, Porthansgatan 3, FI-20500 Turku,
Finland, Members of the European Polysaccharide Network of Excellence
(EPNOE)
| |
Collapse
|
22
|
|
23
|
Wang S, Cui GZ, Song XF, Feng Y, Cui Q. Efficiency and stability enhancement of cis-epoxysuccinic acid hydrolase by fusion with a carbohydrate binding module and immobilization onto cellulose. Appl Biochem Biotechnol 2012; 168:708-17. [PMID: 22843080 DOI: 10.1007/s12010-012-9811-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Accepted: 07/16/2012] [Indexed: 11/27/2022]
Abstract
Cis-epoxysuccinic acid hydrolase (CESH) is an enzyme that catalyzes cis-epoxysuccinic acid to produce enantiomeric L(+)-tartaric acid. The production of tartaric acid by using CESH would be valuable in the chemical industry because of its high yield and selectivity, but the low stability of CESH hampers its application. To improve the stability of CESH, we fused five different carbohydrate-binding modules (CBMs) to CESH and immobilized the chimeric enzymes on cellulose. The effects of the fusion and immobilization on the activity, kinetics, and stability of CESH were compared. Activity measurements demonstrated that the fusion with CBMs and the immobilization on cellulose increased the pH and temperature adaptability of CESH. The chimeric enzymes showed significantly different enzyme kinetics parameters, among which the immobilized CBM30-CESH exhibited twofold catalytic efficiency compared with the native CESH. The half-life measurements indicated that the stability of the enzyme in its free form was slightly increased by the fusion with CBMs, whereas the immobilization on cellulose significantly increased the stability of the enzyme. The immobilized CBM30-CESH showed the longest half-life, which is more than five times the free native CESH half-life at 30 °C. Therefore, most CBMs can improve enzymatic properties, and CBM30 is the best fusion partner for CESH to improve both its enzymatic efficiency and its stability.
Collapse
Affiliation(s)
- Shan Wang
- Shandong Provincial Key Laboratory of Energy Genetics, Key Laboratory of Biofuels, Qingdao Institute of BioEnergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China
| | | | | | | | | |
Collapse
|
24
|
Wang W, Li Z, Liu W, Wu J. Horseradish peroxidase immobilized on the silane-modified ceramics for the catalytic oxidation of simulated oily water. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.01.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
25
|
Liu Z, Wang H, Li B, Liu C, Jiang Y, Yu G, Mu X. Biocompatible magnetic cellulose–chitosan hybrid gel microspheres reconstituted from ionic liquids for enzyme immobilization. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33033d] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Moreau T, Faye C, Baqué M, Desvignes I, Coussot G, Pascal R, Vandenabeele-Trambouze O. Antibody-based surfaces: Rapid characterization using two complementary colorimetric assays. Anal Chim Acta 2011; 706:354-60. [DOI: 10.1016/j.aca.2011.08.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 08/30/2011] [Accepted: 08/31/2011] [Indexed: 01/14/2023]
|
27
|
Matveeva O, Lakina N, Matveeva V, Sulman M, Sulman E, Valetsky P, Doluda V. Biocatalitic Oxidation of 2,3,6-Trimethylphenol Over Immobilized Horseradish Peroxidase in Nonaqueous Media. Top Catal 2011. [DOI: 10.1007/s11244-011-9753-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
28
|
Harris JM, Epting KL, Kelly RM. N-terminal fusion of a hyperthermophilic chitin-binding domain to xylose isomerase from Thermotoga neapolitana enhances kinetics and thermostability of both free and immobilized enzymes. Biotechnol Prog 2010; 26:993-1000. [PMID: 20730758 DOI: 10.1002/btpr.416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Immobilization of a thermostable D-xylose isomerase (EC 5.3.1.5) from Thermotoga neapolitana 5068 (TNXI) on chitin beads was accomplished via a N-terminal fusion with a chitin-binding domain (CBD) from a hyperthermophilic chitinase produced by Pyrococcus furiosus (PF1233) to create a fusion protein (CBD-TNXI). The turnover numbers for glucose to fructose conversion for both unbound and immobilized CBD-TNXI were greater than the wild-type enzyme: k(cat) (min(-1)) was approximately 1,000, 3,800, and 5,800 at 80 degrees C compared to 1,140, 10,350, and 7,000 at 90 degrees C, for the wild-type, unbound, and immobilized enzymes, respectively. These k(cat) values for the glucose to fructose isomerization measured are the highest reported to date for any XI at any temperature. Enzyme kinetic inactivation at 100 degrees C, as determined from a bi-phasic inactivation model, showed that the CBD-TNXI bound to chitin had a half-life approximately three times longer than the soluble wild-type TNXI (19.9 hours vs. 6.8 hours, respectively). Surprisingly, the unbound soluble CBD-TNXI had a significantly longer half-life (56.5 hours) than the immobilized enzyme. Molecular modeling results suggest that the N-terminal fusion impacted subunit interactions, thereby contributing to the enhanced thermostability of both the unbound and immobilized CBD-TNXI. These interactions likely also played a role in modifying active site structure, thereby diminishing substrate-binding affinities and generating higher turnover rates in the unbound fusion protein.
Collapse
Affiliation(s)
- James M Harris
- Dept. of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | | | | |
Collapse
|
29
|
Wojaczyńska E, Wojaczyński J. Enantioselective synthesis of sulfoxides: 2000-2009. Chem Rev 2010; 110:4303-56. [PMID: 20415478 DOI: 10.1021/cr900147h] [Citation(s) in RCA: 324] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Elzbieta Wojaczyńska
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeze Wyspiańskiego 27, 50 370 Wrocław, Poland.
| | | |
Collapse
|
30
|
Hernandez K, Fernandez-Lafuente R. Control of protein immobilization: coupling immobilization and site-directed mutagenesis to improve biocatalyst or biosensor performance. Enzyme Microb Technol 2010; 48:107-22. [PMID: 22112819 DOI: 10.1016/j.enzmictec.2010.10.003] [Citation(s) in RCA: 446] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 08/26/2010] [Accepted: 10/13/2010] [Indexed: 02/04/2023]
Abstract
Mutagenesis and immobilization are usually considered to be unrelated techniques with potential applications to improve protein properties. However, there are several reports showing that the use of site-directed mutagenesis to improve enzyme properties directly, but also how enzymes are immobilized on a support, can be a powerful tool to improve the properties of immobilized biomolecules for use as biosensors or biocatalysts. Standard immobilizations are not fully random processes, but the protein orientation may be difficult to alter. Initially, most efforts using this idea were addressed towards controlling the orientation of the enzyme on the immobilization support, in many cases to facilitate electron transfer from the support to the enzyme in redox biosensors. Usually, Cys residues are used to directly immobilize the protein on a support that contains disulfide groups or that is made from gold. There are also some examples using His in the target areas of the protein and using supports modified with immobilized metal chelates and other tags (e.g., using immobilized antibodies). Furthermore, site-directed mutagenesis to control immobilization is useful for improving the activity, the stability and even the selectivity of the immobilized protein, for example, via site-directed rigidification of selected areas of the protein. Initially, only Cys and disulfide supports were employed, but other supports with higher potential to give multipoint covalent attachment are being employed (e.g., glyoxyl or epoxy-disulfide supports). The advances in support design and the deeper knowledge of the mechanisms of enzyme-support interactions have permitted exploration of the possibilities of the coupled use of site-directed mutagenesis and immobilization in a new way. This paper intends to review some of the advances and possibilities that these coupled strategies permit.
Collapse
Affiliation(s)
- Karel Hernandez
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM-CSIC, Cantoblanco, 28049 Madrid, Spain
| | | |
Collapse
|
31
|
A Chimeric Fusion Protein Engineered with Disparate Functionalities—Enzymatic Activity and Self–assembly. J Mol Biol 2009; 392:129-42. [DOI: 10.1016/j.jmb.2009.06.075] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Revised: 06/09/2009] [Accepted: 06/29/2009] [Indexed: 11/30/2022]
|
32
|
Ozmen EY, Sezgin M, Yilmaz M. Synthesis and characterization of cyclodextrin-based polymers as a support for immobilization of Candida rugosa lipase. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.07.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
33
|
Ozmen EY, Yilmaz M. Pretreatment of Candida rugosa lipase with soybean oil before immobilization on β-cyclodextrin-based polymer. Colloids Surf B Biointerfaces 2009; 69:58-62. [DOI: 10.1016/j.colsurfb.2008.10.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Revised: 07/21/2008] [Accepted: 10/31/2008] [Indexed: 10/21/2022]
|
34
|
Pohl M, Michaelis N, Meister F, Heinze T. Biofunctional Surfaces Based on Dendronized Cellulose. Biomacromolecules 2009; 10:382-9. [DOI: 10.1021/bm801149u] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthias Pohl
- Center of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstraβe 10, D-07743 Jena, Germany, and Thuringian Institute of Textile and Plastics Research, Breitscheidstraβe 97, D-07407 Rudolstadt, Germany
| | - Nico Michaelis
- Center of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstraβe 10, D-07743 Jena, Germany, and Thuringian Institute of Textile and Plastics Research, Breitscheidstraβe 97, D-07407 Rudolstadt, Germany
| | - Frank Meister
- Center of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstraβe 10, D-07743 Jena, Germany, and Thuringian Institute of Textile and Plastics Research, Breitscheidstraβe 97, D-07407 Rudolstadt, Germany
| | - Thomas Heinze
- Center of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstraβe 10, D-07743 Jena, Germany, and Thuringian Institute of Textile and Plastics Research, Breitscheidstraβe 97, D-07407 Rudolstadt, Germany
| |
Collapse
|
35
|
|
36
|
Ryan BJ, O'Connell MJ, Ó'Fágáin C. Consensus mutagenesis reveals that non-helical regions influence thermal stability of horseradish peroxidase. Biochimie 2008; 90:1389-96. [DOI: 10.1016/j.biochi.2008.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2007] [Accepted: 04/18/2008] [Indexed: 11/26/2022]
|
37
|
Bagheri M, Rodríguez H, Swatloski RP, Spear SK, Daly DT, Rogers RD. Ionic Liquid-Based Preparation of Cellulose−Dendrimer Films as Solid Supports for Enzyme Immobilization. Biomacromolecules 2007; 9:381-7. [DOI: 10.1021/bm701023w] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mozhgan Bagheri
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| | - Héctor Rodríguez
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| | - Richard P. Swatloski
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| | - Scott K. Spear
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| | - Daniel T. Daly
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| | - Robin D. Rogers
- Department of Chemistry, Center for Green Manufacturing, and Alabama Institute for Manufacturing Excellence, The University of Alabama, Tuscaloosa, Alabama 35487
| |
Collapse
|
38
|
Li W, Zhang J, Zhang C, Feng X, Han B, Yang G. Synthesis of alpha-chymotrypsin/polymer composites by a reverse micelle/gas antisolvent method. Colloids Surf B Biointerfaces 2007; 59:11-5. [PMID: 17532613 DOI: 10.1016/j.colsurfb.2007.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2007] [Revised: 04/03/2007] [Accepted: 04/10/2007] [Indexed: 11/18/2022]
Abstract
Alpha-chymotrypsin (CT)/polyvinylpyrrolidone (PVP) composites was synthesized by combination of reverse micelles and CO(2). In this method, the two reverse micellar solutions containing CT and PVP, respectively, were first mixed, then compressed CO(2) was used as an antisolvent to precipitate the CT and PVP simultaneously and CT/PVP composites were successfully prepared. The morphology of the obtained CT/PVP composites was characterized by transmission electron microscopy (TEM). The FTIR spectra of the composites showed that there was interaction between CT and PVP. The storage activity of the enzyme immobilized on the polymer by this method was higher than that of the pure enzyme. This method has some advantages and can be easily applied to the synthesis of some other enzyme/polymer composites.
Collapse
Affiliation(s)
- Wei Li
- Beijing National Laboratory for Molecular Sciences, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, PR China
| | | | | | | | | | | |
Collapse
|
39
|
The silica-coated chitosan particle from a layer-by-layer approach for pectinase immobilization. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.10.027] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Sangeetha K, Emilia Abraham T. Investigation on the development of sturdy bioactive hydrogel beads. J Appl Polym Sci 2007. [DOI: 10.1002/app.27445] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
41
|
Immobilization of lipase by filtration into a specially designed microstructure in the CA/PTFE composite membrane. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcatb.2006.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
42
|
Liu ZM, Tingry S, Innocent C, Durand J, Xu ZK, Seta P. Modification of microfiltration polypropylene membranes by allylamine plasma treatment. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2006.01.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
43
|
Ye P, Xu ZK, Wu J, Innocent C, Seta P. Entrusting poly(acrylonitrile-co-maleic acid) ultrafiltration hollow fiber membranes with biomimetic surfaces for lipase immobilization. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcatb.2006.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
44
|
Cheng J, Ming Yu S, Zuo P. Horseradish peroxidase immobilized on aluminium-pillared inter-layered clay for the catalytic oxidation of phenolic wastewater. WATER RESEARCH 2006; 40:283-90. [PMID: 16384593 DOI: 10.1016/j.watres.2005.11.017] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2005] [Revised: 09/27/2005] [Accepted: 11/02/2005] [Indexed: 05/05/2023]
Abstract
Horseradish peroxidase (HRP) was successfully immobilized on aluminum-pillared inter-layered clay (Al-PILC) to obtain enzyme-clay complex for the treatment of wastewater polluted with phenolic compounds. The immobilized HRP exerted a perfect phenol removal by precipitation or transforming to other products over a broader pH range from 4.5 to 9.3. The addition of polyethylene glycol (PEG) could significantly enhance the phenol removal efficiency, and reduce the amount of immobilized enzyme required to achieve a high removal efficiency of over 90%. When the mass ratio of PEG/phenol and the molar ratio of hydrogen peroxide/phenol were 0.4 and 1.5, respectively, the oxidation of phenol could be completed within short retention time after the initiation of reaction in the absence of buffer. HRP immobilized on Al-PILC had better storage stability compared with free enzyme. However, the re-usability of the immobilized enzyme was not very satisfactory. In the fourth repeated test, the immobilized enzyme lost its catalytic performance. Further research should focus on the improvement of re-usability.
Collapse
Affiliation(s)
- Jun Cheng
- College of Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | | | | |
Collapse
|
45
|
Ding HM, Shao L, Liu RJ, Xiao QG, Chen JF. Silica nanotubes for lysozyme immobilization. J Colloid Interface Sci 2005; 290:102-6. [PMID: 15946670 DOI: 10.1016/j.jcis.2005.04.029] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2004] [Revised: 04/09/2005] [Accepted: 04/12/2005] [Indexed: 11/29/2022]
Abstract
Silica nanotubes were synthesized and used as enzyme immobilization carriers. The immobilization profiles were described by the adsorption of lysozyme molecules from aqueous solution onto the hydrophilic silica surface. The driving force of the adsorption, structure changes in the immobilized lysozyme molecules, and enzymatic activities were investigated. A study of the zeta potentials of silica with and without the immobilized lysozyme showed that there was an increase in the isoelectric point with the increase in the loading amount of lysozyme. FTIR spectra indicated that protein secondary structure was maintained well in the immobilized molecules. It was observed that enzymatic activities first increased and then decreased with increasing surface coverage of silica nanotubes by lysozyme, which suggested that the overlap and aggregation of lysozyme molecules reduced enzymatic activities of the adsorbed lysozyme molecules at high surface coverage.
Collapse
Affiliation(s)
- Hao-Min Ding
- Key Lab for Nanomaterials, Ministry of Educations, Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | | | | | | | | |
Collapse
|
46
|
Limoges B, Savéant JM, Yazidi D. Quantitative analysis of catalysis and inhibition at horseradish peroxidase monolayers immobilized on an electrode surface. J Am Chem Soc 2004; 125:9192-203. [PMID: 15369376 DOI: 10.1021/ja0354263] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Out of several tries, biotinylation of the electrode surface by means of a sacrificial biotinylated immunoglobulin, followed by the anchoring of an avidin-enzyme conjugate appears as the best procedure for depositing a horseradish peroxidase (HRP) monolayer onto an electrode surface, allowing a high-yield immobilization of the enzyme within a stable and highly catalytic coating. Cyclic voltammetry is an efficient means for analyzing the catalytic reduction of H(2)O(2) at such HRP monolayer electrodes in the presence of [Os(III)(bpy)(2)pyCl](2+) (with bpy = bipyridine and py = pyridine) as a one-electron reversible cosubstrate. The odd shapes of current-potential responses, unusual bell-shaped variation of the peak or plateau current with the substrate concentration, hysteresis and trace crossing phenomena, and dependence or lack of dependence with the scan rate, can all be explained and quantitatively analyzed in the framework of the same catalysis/inhibition mechanism as previously demonstrated for homogeneous systems, taking substrate and cosubstrate mass transport of into account. According to H(2)O(2) concentration, limiting-behavior analyses based on the dominant factors or complete numerical simulation were used in the treatment of experimental data. The kinetic characteristics derived from these quantitative treatments implemented by the determination of the amount of enzyme deposited by the newly developed droplet depletion method allowed a comparison with homogeneous characteristics to be drawn. It shows that HRP remains nearly fully active once anchored on the electrode surface through the avidin-biotin linkage. On the basis of this full mechanistic and kinetic characterization, the analytical performances in H(2)O(2) detection and amperometric immunosensor applications are finally discussed.
Collapse
Affiliation(s)
- Benoît Limoges
- Contribution from the Laboratoire d'Electrochimie Moléculaire de l'Université Denis Diderot (Paris 7), UMR CNRS 7591, 2 place Jussieu, 75251 Paris Cedex 05, France.
| | | | | |
Collapse
|
47
|
Dinnella C, Monteleone E, Farenga MF, Hourigan JA. The use of enzymes for thermal process monitoring: modification of milk alkaline phosphatase heat resistance by means of an immobilization technique. Food Control 2004. [DOI: 10.1016/s0956-7135(03)00117-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
48
|
Ferrer ML, Levy D, Gomez-Lor B, Iglesias M. High operational stability in peroxidase-catalyzed non-aqueous sulfoxidations by encapsulation within sol–gel glasses. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcatb.2003.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|