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Characterization of Gentisate 1,2-Dioxygenase from Pseudarthrobacter phenanthrenivorans Sphe3 and Its Stabilization by Immobilization on Nickel-Functionalized Magnetic Nanoparticles. Appl Microbiol 2022. [DOI: 10.3390/applmicrobiol2010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was the biochemical and kinetic characterization of the gentisate 1,2-dioxygenase (GDO) from Pseudarthrobacter phenanthrenivorans Sphe3 and the development of a nanobiocatalyst by its immobilization on Ni2+-functionalized Fe3O4-polydopamine magnetic nanoparticles (Ni2+-PDA-MNPs). This is the first GDO to be immobilized. The gene encoding the GDO was cloned with an N-terminal His-tag and overexpressed in E. coli. The nanoparticles showed a high purification efficiency of GDO from crude cell lysates with a maximum activity recovery of 97%. The immobilized enzyme was characterized by Fourier transform infrared spectroscopy (FTIR). The reaction product was identified by 1H NMR. Both free and immobilized GDO exhibited Michaelis–Menten kinetics with Km values of 25.9 ± 4.4 and 82.5 ± 14.2 μM and Vmax values of 1.2 ± 0.1 and 0.03 ± 0.002 mM*s−1, respectively. The thermal stability of the immobilized GDO was enhanced at 30 °C, 40 °C, and 50 °C, compared to the free GDO. Stored at −20 °C, immobilized GDO retained more than 60% of its initial activity after 30 d, while the free enzyme completely lost its activity after 10 d. Furthermore, the immobilized nanoparticle–enzyme conjugate retained more than 50% enzyme activity up to the fifth cycle.
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Miri S, Perez JAE, Brar SK, Rouissi T, Martel R. Sustainable production and co-immobilization of cold-active enzymes from Pseudomonas sp. for BTEX biodegradation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117678. [PMID: 34380234 DOI: 10.1016/j.envpol.2021.117678] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/13/2021] [Accepted: 06/27/2021] [Indexed: 05/09/2023]
Abstract
Toluene/o-Xylene Monooxygenase (ToMO) is equipped with a broad spectrum of aromatic substrate specificity (such as BTEX; benzene, toluene, ethylbenzene, and isomers of xylenes). TOMO has can hydroxylate more than a single position of aromatic rings in two consecutive monooxygenation reactions. Catechol 1,2-dioxygenase (C1,2D) is an iron-containing enzyme able to cleave the ring of catechol (the converted product from ToMO) for complete detoxification of BTEX. In this study, cold-active ToMO and C1,2D were produced using newly isolated psychrophilic Pseudomonas S2TR-14 in the minimal salt medium supplemented with crustacean waste and different concentrations of used motor oil (0.2-2% (v/v)). Crude ToMO and C1,2D were immobilized into micro/nano biochar-chitosan matrices and used for BTEX biodegradation. The results showed that the highest enzyme production (12 U/mg for ToMO and 22 U/mg for C1,2D) was achieved at the presence of 0.5% v/v used motor oil compared to the control group without motor oil (0.07 and 0.06 U/mg). High immobilization yield was achieved due to covalent bonding of ToMO (92.26% for micro matrix and 77.20% for nano matrix) and C1,2D (87.57% for micro matrix and 74.79% for nano matrix) with matrices. FTIR spectra confirmed the immobilization of enzymes on the surface of microbiochar and nanobiochar-chitosan matrices as proper support. The immobilization increased the storage stability of the enzymes with more than 50% residual activity after 30 days at 4 ± 1 °C, while the free form of enzymes had less than 10% of its activity. Immobilized enzymes degraded more than 80% of BTEX (~200 mg/L in groundwater and ~10,000 mg/kg in soil) at 10 ± 1 °C in groundwater and soil. Therefore, integrated use of microbiochar and nanobiochar with chitosan for co-immobilization of ToMO and C1,2D can be a potential way to remove petroleum hydrocarbons with higher efficiency from contaminated groundwater and soil.
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Affiliation(s)
- Saba Miri
- Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3, Canada; Institut National de La Recherche Scientifique, Centre-Eau, Terre et Environnement, 490, Rue de La Couronne, Québec, G1K 9A9, Canada
| | - Jose Alberto Espejel Perez
- Department of Chemical Sciences, University La Salle Mexico, 45 Benjamin Franklin Cuauthmoc, Mexico City, ZP 06140, Mexico
| | - Satinder Kaur Brar
- Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3, Canada; Institut National de La Recherche Scientifique, Centre-Eau, Terre et Environnement, 490, Rue de La Couronne, Québec, G1K 9A9, Canada.
| | - Tarek Rouissi
- Institut National de La Recherche Scientifique, Centre-Eau, Terre et Environnement, 490, Rue de La Couronne, Québec, G1K 9A9, Canada
| | - Richard Martel
- Institut National de La Recherche Scientifique, Centre-Eau, Terre et Environnement, 490, Rue de La Couronne, Québec, G1K 9A9, Canada
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Li J, Li Z, Cao M, Liu J. Expression and characterization of catechol 1,2-dioxygenase from Oceanimonas marisflavi 102-Na3. Protein Expr Purif 2021; 188:105964. [PMID: 34454050 DOI: 10.1016/j.pep.2021.105964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 07/11/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
The gene of catechol 1, 2-dioxygenase was identified and cloned from the genome of Oceanimonas marisflavi 102-Na3. The protein was expressed in Escherichia coli BL21 (DE3) and purified to homogeneity of a dimer with molecular mass of 69.2 kDa. The enzyme was highly stable in pH 6.0-9.5 and below 45 °C and exhibited the maximum activity at pH 8.0 and 30 °C. Being the first characterized intradiol dioxygenase from marine bacteria Oceanimonas sp., the enzyme showed catalytic activity for catechol, 3-methylcatechol, 4-methylcatechol, 3-chlorocatechol, 4-chlorocatechol and pyrogallol. For catechol, Km and Vmax were 11.2 μM and 13.4 U/mg of protein, respectively. The enzyme also showed resistance to most of the metal ions, surfactants and organic solvents, being a promising biocatalyst for biodegradation of aromatic compounds in complex environments.
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Affiliation(s)
- Jing Li
- Centre for Bioengineering & Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Ziyi Li
- Centre for Bioengineering & Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China
| | - Meiwen Cao
- Centre for Bioengineering & Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China.
| | - Jianguo Liu
- Centre for Bioengineering & Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, PR China.
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Jaya P, Nathan VK, Ammini P. Characterization of marine bacterial carbonic anhydrase and their CO 2 sequestration abilities based on a soil microcosm. Prep Biochem Biotechnol 2019; 49:891-899. [PMID: 31244362 DOI: 10.1080/10826068.2019.1633669] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The novel technology of biological carbon sequestration using microbial enzymes have numerous advantages over conventional sequestration strategies. In the present study, extracellular carbonic anhydrase (CA) producing bacteria were isolated from water samples in the Arabian Sea, India. A potential isolate, Bacillus safensis isolate AS-75 was identified based on 16S rDNA sequence analysis. The culture conditions suitable for CA production were 32 °C incubation temperature with 4% NaCl and 10 mM Zn supplementation. Experimental optimization of culture conditions enhanced enzyme activity to 265 U mL-1. CA specific gene was characterized and based on the analysis, the CA of B. safensis isolate AS-75 was a leucine (11.3%) with α-helices as the dominant component in its secondary structure. Based on soil microcosm studies, CA could sequester CO2 by 95.4% ± 0.11% in sterilized soil with enzyme microcosm. Hence, the application of enzyme was found to be more effective in removing CO2.
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Affiliation(s)
- Panchami Jaya
- Regional Centre, National Institute of Oceanography-CSIR , Cochin , India
| | - Vinod Kumar Nathan
- Regional Centre, National Institute of Oceanography-CSIR , Cochin , India.,School of Chemical and Biotechnology, SASTRA University , Thanjavur , India
| | - Parvathi Ammini
- Regional Centre, National Institute of Oceanography-CSIR , Cochin , India
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Construction of a thermoresponsive magnetic porous polymer membrane enzyme reactor for glutaminase kinetics study. Anal Bioanal Chem 2018; 410:5211-5218. [DOI: 10.1007/s00216-018-1169-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/15/2018] [Accepted: 05/28/2018] [Indexed: 12/21/2022]
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6
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Antony N, Balachandran S, Mohanan P. Immobilization of diastase α-amylase on nano zinc oxide. Food Chem 2016; 211:624-30. [DOI: 10.1016/j.foodchem.2016.05.049] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 05/06/2016] [Accepted: 05/09/2016] [Indexed: 10/21/2022]
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7
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P S, S R, G S. Immobilization of thermotolerant intracellular enzymes on functionalized nanoporous activated carbon and application to degradation of an endocrine disruptor: kinetics, isotherm and thermodynamics studies. RSC Adv 2015. [DOI: 10.1039/c5ra11279f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Degradation of 2-nitro phloroglucinol using mixed intracellular enzymes immobilized FNAC matrix
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Affiliation(s)
- Saranya P
- Environmental Technology Division
- CSIR-Central Leather Research Institute (CLRI)
- Chennai
- India
| | - Ranjitha S
- Environmental Technology Division
- CSIR-Central Leather Research Institute (CLRI)
- Chennai
- India
| | - Sekaran G
- Environmental Technology Division
- CSIR-Central Leather Research Institute (CLRI)
- Chennai
- India
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8
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Boonnorat J, Chiemchaisri C, Chiemchaisri W, Yamamoto K. Microbial adaptation to biodegrade toxic organic micro-pollutants in membrane bioreactor using different sludge sources. BIORESOURCE TECHNOLOGY 2014; 165:50-59. [PMID: 24791712 DOI: 10.1016/j.biortech.2014.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 06/03/2023]
Abstract
Biodegradation of toxic organic micro-pollutants in municipal solid waste (MSW) leachate by membrane bioreactor (MBR) was investigated. The MBR systems were seeded with different sludge sources, one was from a pilot-scale MBR system treating MSW leachate and the other was from an activated sludge sewage treatment plant. The biodegradation of BPA, 2,6-DTBP, BHT, DEP, DBP and DEHP, DCP and BBzP, by sludge from both reactors were found improved with time. However, enhanced biodegradation of micro-pollutants was observed in MBR operated under long sludge age condition. Bacterial population analyses determined by PCR-DGGE revealed the development of phenol and phthalate degrading bacteria consortium in MBR sludge during its operation.
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Affiliation(s)
- Jarungwit Boonnorat
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Chart Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
| | - Wilai Chiemchaisri
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Kazuo Yamamoto
- Environmental Science Center, University of Tokyo, Tokyo 113, Japan
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Guzik U, Hupert-Kocurek K, Wojcieszyńska D. Immobilization as a strategy for improving enzyme properties-application to oxidoreductases. Molecules 2014; 19:8995-9018. [PMID: 24979403 PMCID: PMC6271243 DOI: 10.3390/molecules19078995] [Citation(s) in RCA: 305] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/13/2014] [Accepted: 06/16/2014] [Indexed: 01/05/2023] Open
Abstract
The main objective of the immobilization of enzymes is to enhance the economics of biocatalytic processes. Immobilization allows one to re-use the enzyme for an extended period of time and enables easier separation of the catalyst from the product. Additionally, immobilization improves many properties of enzymes such as performance in organic solvents, pH tolerance, heat stability or the functional stability. Increasing the structural rigidity of the protein and stabilization of multimeric enzymes which prevents dissociation-related inactivation. In the last decade, several papers about immobilization methods have been published. In our work, we present a relation between the influence of immobilization on the improvement of the properties of selected oxidoreductases and their commercial value. We also present our view on the role that different immobilization methods play in the reduction of enzyme inhibition during biotechnological processes.
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Affiliation(s)
- Urszula Guzik
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Katarzyna Hupert-Kocurek
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Danuta Wojcieszyńska
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
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Xie NZ, Liang H, Huang RB, Xu P. Biotechnological production of muconic acid: current status and future prospects. Biotechnol Adv 2014; 32:615-22. [PMID: 24751381 DOI: 10.1016/j.biotechadv.2014.04.001] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/23/2014] [Accepted: 04/07/2014] [Indexed: 11/17/2022]
Abstract
Muconic acid (MA), a high value-added bio-product with reactive dicarboxylic groups and conjugated double bonds, has garnered increasing interest owing to its potential applications in the manufacture of new functional resins, bio-plastics, food additives, agrochemicals, and pharmaceuticals. At the very least, MA can be used to produce commercially important bulk chemicals such as adipic acid, terephthalic acid and trimellitic acid. Recently, great progress has been made in the development of biotechnological routes for MA production. This present review provides a comprehensive and systematic overview of recent advances and challenges in biotechnological production of MA. Various biological methods are summarized and compared, and their constraints and possible solutions are also described. Finally, the future prospects are discussed with respect to the current state, challenges, and trends in this field, and the guidelines to develop high-performance microbial cell factories are also proposed for the MA production by systems metabolic engineering.
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Affiliation(s)
- Neng-Zhong Xie
- State Key Laboratory of Non-Food Biomass Energy and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Academy of Sciences, Nanning 530007, People's Republic of China
| | - Hong Liang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Ri-Bo Huang
- State Key Laboratory of Non-Food Biomass Energy and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Academy of Sciences, Nanning 530007, People's Republic of China.
| | - Ping Xu
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.
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Guzik U, Hupert-Kocurek K, Marchlewicz A, Wojcieszyńska D. Enhancement of biodegradation potential of catechol 1,2-dioxygenase through its immobilization in calcium alginate gel. ELECTRON J BIOTECHN 2014. [DOI: 10.1016/j.ejbt.2014.02.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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12
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Micalella C, Caglio R, Mozzarelli A, Valetti F, Pessione E, Giunta C, Bruno S. Ormosil gels doped with engineered catechol 1,2 dioxygenases for chlorocatechol bioremediation. Biotechnol Appl Biochem 2014; 61:297-303. [PMID: 24571591 DOI: 10.1002/bab.1162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 10/01/2013] [Indexed: 11/06/2022]
Abstract
Enzymes entrapped in wet, nanoporous silica gel have great potential as bioreactors for bioremediation because of their improved thermal, chemical, and mechanical stability with respect to enzymes in solution. The B isozyme of catechol 1,2 dioxygenase from Acinetobacter radioresistens and its mutants of Leu69 and Ala72, designed for an increased reactivity toward the environmental pollutant chlorocatechols, were encapsulated using alkoxysilanes and alkyl alkoxysilanes as precursors in varying proportions. Encapsulation of the mutants in a hydrophobic tetramethoxysilane/dimethoxydimethylsilane-based matrix yielded a remarkable 10- to 12-fold enhancement in reactivity toward chlorocatechols. These gels also showed a fivefold increase in relative reactivity toward chlorocatechols with respect to the natural substrate catechol, thus compensating for their relatively low activity for these substrates in solution. The encapsulated enzyme, unlike the enzyme in solution, proved resilient in assays carried out in urban wastewater and bacteria-contaminated solutions mimicking environmentally relevant conditions. Overall, the combination of a structure-based rational design of enzyme mutants, and the selection of a suitable encapsulation material, proved to be a powerful approach for the production and optimization of a potential bioremediation device, with increased activity and resistance toward bacterial degradation.
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Activity of a carboxyl-terminal truncated form of catechol 2,3-dioxygenase from Planococcus sp. S5. ScientificWorldJournal 2014; 2014:598518. [PMID: 24693238 PMCID: PMC3943285 DOI: 10.1155/2014/598518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 12/26/2013] [Indexed: 11/17/2022] Open
Abstract
Catechol 2,3-dioxygenases (C23Os, E.C.1.13.12.2) are two domain enzymes that catalyze degradation of monoaromatic hydrocarbons. The catalytically active C-domain of all known C23Os comprises ferrous ion ligands as well as residues forming active site pocket. The aim of this work was to examine and discuss the effect of nonsense mutation at position 289 on the activity of catechol 2,3-dioxygenase from Planococcus strain. Although the mutant C23O showed the same optimal temperature for activity as the wild-type protein (35°C), it exhibited activity slightly more tolerant to alkaline pH. Mutant enzyme exhibited also higher affinity to catechol as a substrate. Its Km (66.17 µM) was approximately 30% lower than that of wild-type enzyme. Interestingly, removal of the C-terminal residues resulted in 1.5- to 1.8-fold (P < 0.05) increase in the activity of C23OB61 against 4-methylcatechol and 4-chlorocatechol, respectively, while towards catechol the activity of the protein dropped to about 80% of that of the wild-type enzyme. The results obtained may facilitate the engineering of the C23O for application in the bioremediation of polluted areas.
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Degradation potential of protocatechuate 3,4-dioxygenase from crude extract of Stenotrophomonas maltophilia strain KB2 immobilized in calcium alginate hydrogels and on glyoxyl agarose. BIOMED RESEARCH INTERNATIONAL 2014; 2014:138768. [PMID: 24693536 PMCID: PMC3944718 DOI: 10.1155/2014/138768] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 12/19/2013] [Indexed: 11/18/2022]
Abstract
Microbial intradiol dioxygenases have been shown to have a great potential for bioremediation; however, their structure is sensitive to various environmental and chemical agents. Immobilization techniques allow for the improvement of enzyme properties. This is the first report on use of glyoxyl agarose and calcium alginate as matrixes for the immobilization of protocatechuate 3,4-dioxygenase. Multipoint attachment of the enzyme to the carrier caused maintenance of its initial activity during the 21 days. Immobilization of dioxygenase in calcium alginate or on glyoxyl agarose resulted in decrease in the optimum temperature by 5 °C and 10 °C, respectively. Entrapment of the enzyme in alginate gel shifted its optimum pH towards high-alkaline pH while immobilization of the enzyme on glyoxyl agarose did not influence pH profile of the enzyme. Protocatechuate 3,4-dioygenase immobilized in calcium alginate showed increased activity towards 2,5-dihydroxybenzoate, caffeic acid, 2,3-dihydroxybenzoate, and 3,5-dihydroxybenzoate. Slightly lower activity of the enzyme was observed after its immobilization on glyoxyl agarose. Entrapment of the enzyme in alginate gel protected it against chelators and aliphatic alcohols while its immobilization on glyoxyl agarose enhanced enzyme resistance to inactivation by metal ions.
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Catalytic activity and thermostability of enzymes immobilized on silanized surface: Influence of the crosslinking agent. Enzyme Microb Technol 2013; 52:336-43. [DOI: 10.1016/j.enzmictec.2013.02.018] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 01/17/2023]
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16
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Krastanov A, Alexieva Z, Yemendzhiev H. Microbial degradation of phenol and phenolic derivatives. Eng Life Sci 2013. [DOI: 10.1002/elsc.201100227] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Albert Krastanov
- Department of Biotechnology; University of Food Technologies; Plovdiv; Bulgaria
| | - Zlatka Alexieva
- Institute of Microbiology; Bulgarian Academy of Sciences; Sofia; Bulgaria
| | - Husein Yemendzhiev
- Department of Water Technology; University “Prof. Asen Zlatarov”; Burgas; Bulgaria
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Wojcieszyńska D, Hupert-Kocurek K, Jankowska A, Guzik U. Properties of catechol 2,3-dioxygenase from crude extract of Stenotrophomonas maltophilia strain KB2 immobilized in calcium alginate hydrogels. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.04.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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18
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Yadav RR, Mudliar SN, Shekh AY, Fulke AB, Devi SS, Krishnamurthi K, Juwarkar A, Chakrabarti T. Immobilization of carbonic anhydrase in alginate and its influence on transformation of CO2 to calcite. Process Biochem 2012. [DOI: 10.1016/j.procbio.2011.12.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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19
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Wilson AN, Salas R, Guiseppi-Elie A. Bioactive hydrogels demonstrate mediated release of a chromophore by chymotrypsin. J Control Release 2012; 160:41-7. [PMID: 22410116 DOI: 10.1016/j.jconrel.2012.02.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 02/14/2012] [Accepted: 02/25/2012] [Indexed: 11/30/2022]
Abstract
A model system, α-chymotrypsin (Cht) (a protease) and a cleavable peptide-chromogen (pro-drug) covalently incorporated into a hydrogel, was investigated to understand the mechanisms of covalent loading and release by enzymatic cleavage in bio-responsive delivery systems. Using EDC and Sulfo-NHS, terminal carboxyl groups of N-succinyl-Ala-Ala-Pro-Phe p-nitroanilide, a cleavable chromogen, were conjugated to primary amines of a hydrated poly(HEMA)-based hydrogel. Hydrogel disks were incubated in buffered Cht causing enzyme-mediated cleavage of the peptide and concomitant release of the chromophore for monitoring. To investigate substrate loading and the effects of hydrogel morphology on the system, the concentration of the amino groups (5, 10, 20, and 30 mol%) and the cross-linked density (1, 5, 7, 9 and 12 mol%) were independently varied. Loading-Release Efficiency of the chromogen was shown to exhibit a positive relation to increasing amino groups (AEMA). The release rates demonstrated a negative relation to increasing cross-linked density attributed to decreasing void fractions and increasing tortuosities. The diffusion coefficient of Cht, D(0,Cht), was determined to be 6.9±0.5×10(-7)cm(2)s(-1), and the range of D(eff) of Cht for 1 to 12 mol% TEGDA was determined to be 6.9×10(-8) to 0.1×10(-8)cm(2)s(-1). We show how these parameters may be optimized and used to achieve programmed release rates in engineered bio-responsive systems.
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Affiliation(s)
- A Nolan Wilson
- Center for Bioelectronics, Biosensors and Biochips (C3B), Clemson University Advanced Materials Center, 100 Technology Drive, Anderson, SC 29625, USA
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Di Nardo G, Roggero C, Campolongo S, Valetti F, Trotta F, Gilardi G. Catalytic properties of catechol 1,2-dioxygenase from Acinetobacter radioresistens S13 immobilized on nanosponges. Dalton Trans 2009:6507-12. [PMID: 19672496 DOI: 10.1039/b903105g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catechol 1,2-dioxygenases are iron containing enzymes able to convert catechol into cis,cis-muconate, a precursor of the industrially important compound adipic acid. Catechol 1,2-dioxygenase from Acinetobacter radioresistens S13 was immobilized on beta-cyclodextrins cross-linked with carbonate groups (nanosponges) with a yield of 29 mg of enzyme per gram of support. This support was chosen for its low cost and its ability to offer different types of interactions with the enzyme. The activity profiles at different pH and temperatures showed a shift of the optimal pH from 8.5, for the free protein, to 9.5, for the immobilized protein and, similarly, a shift in optimal temperature from 30 degrees C to 50 degrees C. The Michaelis-Menten constant, KM, increased from 2.0 +/- 0.3 microM, for the free form, to 16.6 +/- 4.8 microM for the immobilized enzyme, whereas the rate constant, k(cat), values were found to be 32 +/- 2 s(-1) and 27 +/- 3 s(-1) for the free and immobilized forms respectively. The immobilization process also increased the thermostability of the enzyme with 60% residual activity after 90 min at 40 degrees C for the immobilized protein versus 20% for the free enzyme. A residual activity of 75% was found after 15 min at 60 degrees C for the immobilized enzyme while the free form showed a total loss of activity under the same conditions. The activity toward other substrates, such as 3- and 4-methylcatechol and 4-chlorocatechol, was retained by the immobilized enzyme. A small scale bioreactor was constructed and was able to convert catechol into cis,cis-muconic acid with high efficiency for 70 days.
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Affiliation(s)
- Giovanna Di Nardo
- Department of Human and Animal Biology, University of Torino, via Accademia Albertina 12, 10123, Torino, Italy
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Bolivar JM, Rocha-Martin J, Mateo C, Cava F, Berenguer J, Fernandez-Lafuente R, Guisan JM. Coating of Soluble and Immobilized Enzymes with Ionic Polymers: Full Stabilization of the Quaternary Structure of Multimeric Enzymes. Biomacromolecules 2009; 10:742-7. [DOI: 10.1021/bm801162e] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan M. Bolivar
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Javier Rocha-Martin
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Cesar Mateo
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Felipe Cava
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Jose Berenguer
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Jose M. Guisan
- Departamento de Biocatálisis, Instituto de Catálisis y Petroleoquímica-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa, CSIC-UAM, Campus UAM, Cantoblanco, 28049 Madrid, Spain
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Bolivar JM, Mateo C, Rocha-Martin J, Cava F, Berenguer J, Fernandez-Lafuente R, Guisan JM. The adsorption of multimeric enzymes on very lowly activated supports involves more enzyme subunits: Stabilization of a glutamate dehydrogenase from Thermus thermophilus by immobilization on heterofunctional supports. Enzyme Microb Technol 2009. [DOI: 10.1016/j.enzmictec.2008.10.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Immobilized Manihot esculenta preparation as a novel biocatalyst in the enantioselective acetylation of racemic alcohols. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.05.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pessela BC, Mateo C, Filho M, Carrascosa AV, Fernandez-Lafuente R, Guisán JM. Stabilization of the quaternary structure of a hexameric alpha-galactosidase from Thermus sp. T2 by immobilization and post-immobilization techniques. Process Biochem 2008. [DOI: 10.1016/j.procbio.2007.11.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cai W, Li J, Zhang Z. The characteristics and mechanisms of phenol biodegradation by Fusarium sp. JOURNAL OF HAZARDOUS MATERIALS 2007; 148:38-42. [PMID: 17336453 DOI: 10.1016/j.jhazmat.2007.02.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Revised: 02/02/2007] [Accepted: 02/02/2007] [Indexed: 05/14/2023]
Abstract
Fusarium sp. HJ01 can grow using phenol as only carbon resource and has strong ability of phenol degradation. The effect of pH, temperature and sucrose addition on biodegradative capacity of Fusarium sp. HJ01 was examined. The main metabolism pathways and mechanism of phenol degradation by HJ01 strain is described. This strain exhibited both cathecol 1,2-dioxygenase (C12) and cathecol 2,3-dioxygenase (C23) in free cell extracts obtained from cells grown exclusively on phenol or with sucrose added, suggesting that the intermediate cathecol can be oxidized in the catabolic pathway of ortho and meta fission. Mineral salts added in culture have an inhibition on both C12 and C23. These two enzymes can act and retain its catalytic ability over wide ranges of temperature and pH. C12 activity was optimal at pH 6.8 and 40 degrees C, with significant activity observed in the range from pH 3 to pH 8.8, and in the temperature range from 30 to 50 degrees C. In comparison with C12, the activity of C23 was slightly more sensitive to pH, C23 had a higher activity in alkalescence condition from pH 7.4 to pH 10.6 and was more stable at higher temperatures from 30 to 75 degrees C.
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Affiliation(s)
- Weijian Cai
- Zhejiang Gongshang University, Hangzhou 310035, Zhejiang, China
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