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Shen W, Dalby PA, Guo Z, Li W, Zhu C, Fan D. Residue Effect-Guided Design: Engineering of S. Solfataricus β-Glycosidase to Enhance Its Thermostability and Bioproduction of Ginsenoside Compound K. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16669-16680. [PMID: 37812684 DOI: 10.1021/acs.jafc.3c04575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
β-Glycosidase from Sulfolobus solfataricus (SS-BGL) is a highly effective biocatalyst for the synthesis of compound K (CK) from glycosylated protopanaxadiol ginsenosides. In order to improve the thermal stability of SS-BGL, molecular dynamics simulations were used to determine the residue-level binding energetics of ginsenoside Rd in the SS-BGL-Rd docked complex and to identify the top ten critical contributors. Target sites for mutations were determined using dynamic cross-correlation mapping of residues via the Ohm server to identify networks of distal residues that interact with the key binding residues. Target mutations were determined rationally based on site characteristics. Single mutants and then recombination of top hits led to the two most promising variants SS-BGL-Q96E/N97D/N302D and SS-BGL-Q96E/N97D/N128D/N302D with 2.5-fold and 3.3-fold increased half-lives at 95 °C, respectively. The enzyme activities relative to those of wild-type for ginsenoside conversion were 161 and 116%, respectively..
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Affiliation(s)
- Wenfeng Shen
- Engineering Research Center of Western Resource Innovation Medicine Green Manufacturing, Ministry of Education, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, China
| | - Paul A Dalby
- Department of Biochemical Engineering, UCL, London WCIE 6BT, U.K
| | - Zheng Guo
- Department of Biological and Chemical Engineering, Faculty of Science and Technology, Aarhus University, Gustav Wied Vej 10, Aarhus 8000, Denmark
| | - Weina Li
- Engineering Research Center of Western Resource Innovation Medicine Green Manufacturing, Ministry of Education, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, China
| | - Chenhui Zhu
- Engineering Research Center of Western Resource Innovation Medicine Green Manufacturing, Ministry of Education, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, China
| | - Daidi Fan
- Engineering Research Center of Western Resource Innovation Medicine Green Manufacturing, Ministry of Education, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, China
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Hofmann K, Hamel C. Potential of Integrated Semi‐Continuous Enzymatic Synthesis and Filtration Processes for Efficiency Enhancement. CHEM-ING-TECH 2023. [DOI: 10.1002/cite.202200203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Katrin Hofmann
- Anhalt University of Applied Sciences Department of Applied Biosciences and Process Engineering Bernburger Str. 55 06366 Koethen (Anhalt) Germany
| | - Christof Hamel
- Anhalt University of Applied Sciences Department of Applied Biosciences and Process Engineering Bernburger Str. 55 06366 Koethen (Anhalt) Germany
- Otto von Guericke University Institute of Process Engineering Universitaetsplatz 2 39106 Magdeburg Germany
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Purified lactases versus whole-cell lactases-the winner takes it all. Appl Microbiol Biotechnol 2021; 105:4943-4955. [PMID: 34115184 DOI: 10.1007/s00253-021-11388-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/25/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
Lactose-free dairy products are in great demand worldwide due to the high prevalence of lactose intolerance. To make lactose-free dairy products, commercially available β-galactosidase enzymes, also termed lactases, are used to break down lactose to its constituent monosaccharides, glucose and galactose. In this mini-review, the characteristics of lactase enzymes, their origin, and ways of use are discussed in light of their potential for hydrolyzing lactose. We also discuss whole-cell lactase catalysts, which appear to have great potential in terms of cost reduction and convenience, and which are more natural alternatives to purified enzymes. Lactic acid bacteria (LAB) already used in food fermentations seem to be optimal candidates for whole-cell lactases. However, they have not been industrially exploited yet due to technical hurdles. For whole-cell lactases to be efficient, the lactase enzymes inside the cells must be made available for lactose hydrolysis, and thus, cells need to be permeabilized or disrupted prior to use. Here we review state-of-the-art approaches for disrupting or permeabilizing microorganisms. Lastly, based on recent scientific achievements, we propose a novel, resource-efficient, and low-cost scenario for achieving lactose hydrolysis at a dairy plant using a LAB whole-cell lactase.Key points• Lactases (β-galactosidase) are essential for producing lactose-free dairy products• Novel permeabilization techniques facilitate the use of LAB lactases• Whole-cell lactase catalysts have great potential for reducing costs and resources Graphical abstract.
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Su X, Wang S, Su G, Zheng Z, Zhang J, Ma Y, Liu Z, Zhou H, Zhang Y, Zhang L. Production of microhomologous-mediated site-specific integrated LacS gene cow using TALENs. Theriogenology 2018; 119:282-288. [PMID: 30075414 DOI: 10.1016/j.theriogenology.2018.07.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 07/13/2018] [Accepted: 07/14/2018] [Indexed: 12/31/2022]
Abstract
Gene editing tools (Zinc-Finger Nucleases, ZFN; Transcription Activator-Like Effector Nucleases, TALEN; and Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/CRISPR-associated (Cas)9, CRISPR-Cas9) provide us with a powerful means of performing genetic engineering procedures. A combinational approach that utilizes both somatic cell nuclear transfer (SCNT) and somatic cell gene editing facilitates the generation of genetically engineered animals. However, the associated research has utilized markers and/or selected genes, which constitute a potential threat to biosafety. Microhomologous-mediated end-joining (MMEJ) has showed the utilization of micro-homologous arms (5-25 bp) can mediate exogenous gene insertion. Dairy milk is a major source of nutrition worldwide. However, most people are not capable of optimally utilizing the nutrition in milk because of lactose intolerance. Sulfolobus solfataricus β-glycosidase (LacS) is a lactase derived from the extreme thermophilic archaeon Sulfolobus solfataricus. Our finally aim was to site-specific integrated LacS gene into cow's genome through TALEN-mediated MMEJ and produce low-lactose cow. Firstly, we constructed TALENs vectors which target to the cow's β-casein locus and LacS gene expression vector which contain TALEN reorganization sequence and micro-homologous arms. Then we co-transfected these vectors into fetal derived skin fibroblasts and cultured as monoclone. Positive cell clones were screened using 3' junction PCR amplification and sequencing analysis. The positive cells were used as donors for SCNT and embryo transfer (ET). Lastly, we detected the genotype through PCR of blood genomic DNA. This resulted in a LacS knock-in rate of 0.8% in TALEN-treated cattle fetal fibroblasts. The blastocyst rate of SCNT embryo was 27%. The 3 months pregnancy rate was 20%. Finally, we obtained 1 newborn cow (5%) and verified its genotype. We obtained 1 site-specific marker-free LacS transgenic cow. It provides a basis to solve lactose intolerance by gene engineering breeding. This study also provides us with a new strategy to facilitate gene knock-ins in livestock using techniques that exhibit improved biosafety and intuitive methodologies.
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Affiliation(s)
- Xiaohu Su
- Key Laboratory of Gene Engineering of the Ministry of Education, Guangzhou Key Laboratory of Healthy Aging Research and State Key Laboratory of Biocontrol, SYSU-BCM JointResearch Center, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Shenyuan Wang
- Key Laboratory of Biological Manufacturing of Inner Mongolia Autonomous Region, College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China
| | - Guanghua Su
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China
| | - Zhong Zheng
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China
| | - Jiaqi Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yunlong Ma
- Key Laboratory of Biological Manufacturing of Inner Mongolia Autonomous Region, College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China
| | - Zongzheng Liu
- Qingdao Animal Husbandry and Veterinary Research Institution, Qingdao, ShanDong, 266100, PR China
| | - Huanmin Zhou
- Key Laboratory of Biological Manufacturing of Inner Mongolia Autonomous Region, College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China
| | - Yanru Zhang
- Key Laboratory of Biological Manufacturing of Inner Mongolia Autonomous Region, College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China.
| | - Li Zhang
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, Inner Mongolia Autonomous Region, 010018, PR China.
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Resolution Mechanism and Characterization of an Ammonium Chloride-Tolerant, High-Thermostable, and Salt-Tolerant Phenylalanine Dehydrogenase from Bacillus halodurans. Appl Biochem Biotechnol 2018; 186:789-804. [PMID: 29740797 DOI: 10.1007/s12010-018-2767-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/18/2018] [Indexed: 10/17/2022]
Abstract
As phenylalanine dehydrogenase (PheDH) plays an important role in the synthesis of chiral drug intermediates and detection of phenylketonuria, it is significant to obtain a PheDH with specific and high activity. Here, a PheDH gene, pdh, encoding a novel BhPheDH with 61.0% similarity to the known PheDH from Microbacterium sp., was obtained. The BhPheDH showed optimal activity at 60 °C and pH 7.0, and it showed better stability in hot environment (40-70 °C) than the PheDH from Nocardia sp. And its activity and thermostability could be significantly increased by sodium salt. After incubation for 2 h in 3 M NaCl at 60 °C, the residual activity of the BhPheDH was found to be 1.8-fold higher than that of the control group (without NaCl). The BhPheDH could tolerate high concentration of ammonium chloride and its activity could be also enhanced by the high concentration of ammonium salts. These characteristics indicate that the BhPheDH possesses better thermostability, ammonium chloride tolerance, halophilic mechanism, and high salt activation. The mechanism of thermostability and high salt tolerance of the BhPheDH was analyzed by molecular dynamics simulation. These results provide useful information about the enzyme with high-temperature activity, thermostability, halophilic mechanism, tolerance to high concentration of ammonium chloride, higher salt activation and enantio-selectivity, and the application of molecular dynamics simulation in analyzing the mechanism of these distinctive characteristics.
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Park HJ, Driscoll AJ, Johnson PA. The development and evaluation of β-glucosidase immobilized magnetic nanoparticles as recoverable biocatalysts. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.01.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ionata E, Marcolongo L, La Cara F, Cetrangolo GP, Febbraio F. Improvement of functional properties of a thermostable β-glycosidase for milk lactose hydrolysis. Biopolymers 2018; 109:e23118. [DOI: 10.1002/bip.23118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/14/2018] [Accepted: 03/16/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Elena Ionata
- Institute of Agro-Environmental and Forest Biology-Consiglio Nazionale delle Ricerche (CNR), via P. Castellino 111; Naples 80131 Italy
| | - Loredana Marcolongo
- Institute of Agro-Environmental and Forest Biology-Consiglio Nazionale delle Ricerche (CNR), via P. Castellino 111; Naples 80131 Italy
| | - Francesco La Cara
- Institute of Agro-Environmental and Forest Biology-Consiglio Nazionale delle Ricerche (CNR), via P. Castellino 111; Naples 80131 Italy
| | - Giovanni P. Cetrangolo
- Institute of Protein Biochemistry-Consiglio Nazionale delle Ricerche (CNR), via P. Castellino 111; Naples 80131 Italy
| | - Ferdinando Febbraio
- Institute of Protein Biochemistry-Consiglio Nazionale delle Ricerche (CNR), via P. Castellino 111; Naples 80131 Italy
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Vadgama RN, Odaneth AA, Lali AM. Green synthesis of isopropyl myristate in novel single phase medium Part II: Packed bed reactor (PBR) studies. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2015; 8:105-109. [PMID: 28352578 PMCID: PMC4980735 DOI: 10.1016/j.btre.2015.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/15/2015] [Accepted: 10/15/2015] [Indexed: 11/17/2022]
Abstract
Isopropyl myristate is a useful functional molecule responding to the requirements of numerous fields of application in cosmetic, pharmaceutical and food industry. In the present work, lipase-catalyzed production of isopropyl myristate by esterification of myristic acid with isopropyl alcohol (molar ratio of 1:15) in the homogenous reaction medium was performed on a bench-scale packed bed reactors, in order to obtain suitable reaction performance data for upscaling. An immobilized lipase B from Candida antartica was used as the biocatalyst based on our previous study. The process intensification resulted in a clean and green synthesis process comprising a series of packed bed reactors of immobilized enzyme and water dehydrant. In addition, use of the single phase reaction system facilitates efficient recovery of the product with no effluent generated and recyclability of unreacted substrates. The single phase reaction system coupled with a continuous operating bioreactor ensures a stable operational life for the enzyme.
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Affiliation(s)
| | - Annamma A. Odaneth
- DBT-ICT Centre for Energy Biosciences, Institute of Chemical Technology, Nathalal Parikh Marg, Matunga (E), Mumbai 400019, India
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Li D, Ackaah-Gyasi NA, Simpson BK. Immobilization of Bovine Trypsin onto Controlled Pore Glass. J Food Biochem 2013. [DOI: 10.1111/jfbc.12037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Dan Li
- Department of Food Science and Agricultural Chemistry; McGill University (Macdonald Campus); 21,111 Lakeshore Ste-Anne-de-Bellevue Quebec Canada H9X 3V9
| | - Nana Akyaa Ackaah-Gyasi
- Department of Food Science and Agricultural Chemistry; McGill University (Macdonald Campus); 21,111 Lakeshore Ste-Anne-de-Bellevue Quebec Canada H9X 3V9
| | - Benjamin K. Simpson
- Department of Food Science and Agricultural Chemistry; McGill University (Macdonald Campus); 21,111 Lakeshore Ste-Anne-de-Bellevue Quebec Canada H9X 3V9
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Zajkoska P, Rebroš M, Rosenberg M. Biocatalysis with immobilized Escherichia coli. Appl Microbiol Biotechnol 2013; 97:1441-55. [DOI: 10.1007/s00253-012-4651-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/09/2012] [Accepted: 12/11/2012] [Indexed: 11/30/2022]
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11
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Gänzle MG. Enzymatic synthesis of galacto-oligosaccharides and other lactose derivatives (hetero-oligosaccharides) from lactose. Int Dairy J 2012. [DOI: 10.1016/j.idairyj.2011.06.010] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Rahman NK, Kamaruddin AH, Uzir MH. Enzymatic synthesis of farnesyl laurate in organic solvent: initial water activity, kinetics mechanism, optimization of continuous operation using packed bed reactor and mass transfer studies. Bioprocess Biosyst Eng 2011; 34:687-99. [DOI: 10.1007/s00449-011-0518-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 01/25/2011] [Indexed: 11/28/2022]
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Zhang X, Xu JH, Liu DH, Pan J, Chen B. Construction and operation of a fibrous bed reactor with immobilized lactonase for efficient production of (R)-α-hydroxy-γ-butyrolactone. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rahman N, Kamaruddin A, Uzir M. Continuous Biosynthesis of Farnesyl Laurate in Packed Bed Reactor: Optimization using Response Surface Methodology. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/jas.2010.1110.1115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wang F, Su RX, Qi W, Zhang MJ, He ZM. Preparation and activity of bubbling-immobilized cellobiase within chitosan-alginate composite. Prep Biochem Biotechnol 2010; 40:57-64. [PMID: 20024795 DOI: 10.1080/10826060903392939] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Cellobiase can hydrolyze cellobiose into glucose; it plays a key role in the process of cellulose hydrolysis by reducing the product inhibition. To reuse the enzyme and improve the economic value of cellulosic ethanol, cellobiase was immobilized using sodium alginate and chitosan as carriers by the bubbling method. The immobilization conditions were optimized as follows: enzyme loading of 100 U cellobiase/g carrier, 30 min immobilization, 3.5 wt% sodium alginate, 0.25 wt% chitosan, and 2 wt% calcium chloride. Compared to free enzyme, the immobilized cellobiase had a decreased apparent K(m) and the maximum activity at a lower pH, indicating its higher acidic and thermal stability. The immobilized cellobiase was further tested in the hydrolysis of cellobiose and various cellulosic substrates (microcrystalline cellulose, filter paper, and ammonia-pretreated corn cobs). Together with cellulases, the immobilized cellobiase converted the cellulosic substrates into glucose with the rate and extent similar to the free enzyme.
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Affiliation(s)
- Fang Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, PR China
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Continuous production of lactulose by immobilized thermostable β-glycosidase from Pyrococcus furiosus. J Biotechnol 2010; 145:387-93. [DOI: 10.1016/j.jbiotec.2009.12.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 12/11/2009] [Accepted: 12/21/2009] [Indexed: 11/17/2022]
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Wimmer Z, Zarevúcka M. A review on the effects of supercritical carbon dioxide on enzyme activity. Int J Mol Sci 2010; 11:233-253. [PMID: 20162013 PMCID: PMC2821001 DOI: 10.3390/ijms11010233] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Revised: 01/07/2010] [Accepted: 01/09/2010] [Indexed: 12/05/2022] Open
Abstract
Different types of enzymes such as lipases, several phosphatases, dehydrogenases, oxidases, amylases and others are well suited for the reactions in SC-CO2. The stability and the activity of enzymes exposed to carbon dioxide under high pressure depend on enzyme species, water content in the solution and on the pressure and temperature of the reaction system. The three-dimensional structure of enzymes may be significantly altered under extreme conditions, causing their denaturation and consequent loss of activity. If the conditions are less adverse, the protein structure may be largely retained. Minor structural changes may induce an alternative active protein state with altered enzyme activity, specificity and stability.
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Affiliation(s)
- Zdeněk Wimmer
- Institute of Experimental Botany AS CR, Isotope Laboratory, Vídeňská 1083, 142 20 Prague 4–Krč, Czech Republic; E-Mail:
| | - Marie Zarevúcka
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo náměstí 2, 166 10 Prague 6–Dejvice, Czech Republic
- Author to whom correspondence should be addressed; E-Mail:
; Tel.: +420-220-183-281; Fax: +420-220-183-582
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Lim BC, Kim HJ, Oh DK. A stable immobilized d-psicose 3-epimerase for the production of d-psicose in the presence of borate. Process Biochem 2009. [DOI: 10.1016/j.procbio.2009.03.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Smaali I, Rémond C, Skhiri Y, O'Donohue MJ. Biocatalytic conversion of wheat bran hydrolysate using an immobilized GH43 beta-xylosidase. BIORESOURCE TECHNOLOGY 2009; 100:338-344. [PMID: 18674896 DOI: 10.1016/j.biortech.2008.06.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Revised: 06/10/2008] [Accepted: 06/11/2008] [Indexed: 05/26/2023]
Abstract
To investigate the concept of a xylosidase-based process for the continuous production of xylose from arabinoxylan-containing feedstocks, a beta-xylosidase from Bacillus halodurans C-125 was immobilized and deployed in packed bed reactor (PBR). Among the several immobilization methods tested, glutaraldehyde-mediated immobilization on chitosan was the best both in terms of immobilization and activity yields (91% and 72.9%, respectively). In batch experiments the immobilized enzyme hydrolyzed wheat bran hydrolysates quite efficiently, consuming nearly all xylobiose and xylotriose after 6h. Its reusability showed only a 50% decrease of its activity after 92h. Using the chitosan-immobilized beta-xylosidase in a PBR, xylose productivity was 7.2g xylose l(-1)h(-1) and the conversion factor was 0.55 (derived from initial xylose in the substrate). The operational stability of the PBR was good, because only 25% of productivity was lost after the treatment of three batches of substrate over a 72-h period.
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Affiliation(s)
- Issam Smaali
- Fractionnement des Agroressources et Emballage, URCA, UMR INRA 614, Reims Cedex 2, France.
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Thomsen MS, Nidetzky B. Coated-wall microreactor for continuous biocatalytic transformations using immobilized enzymes. Biotechnol J 2009; 4:98-107. [PMID: 18618472 DOI: 10.1002/biot.200800051] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Malene S Thomsen
- Research Center Applied Biocatalysis, Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, Graz, Austria
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Ong AL, Kamaruddin AH, Bhatia S, Aboul-Enein HY. Enantioseparation of (R,S)-ketoprofen usingCandida antarcticalipase B in an enzymatic membrane reactor. J Sep Sci 2008; 31:2476-85. [DOI: 10.1002/jssc.200800086] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kumari A, Mahapatra P, Kumar GV, Banerjee R. Comparative study of thermostability and ester synthesis ability of free and immobilized lipases on cross linked silica gel. Bioprocess Biosyst Eng 2007; 31:291-8. [PMID: 17882456 DOI: 10.1007/s00449-007-0160-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Accepted: 08/30/2007] [Indexed: 11/25/2022]
Abstract
A novel support has been utilized for immobilization of lipase, which was prepared by amination of silica with ethanolamine followed by cross linking with glutaraldehyde. Lipases from Rhizopus oryzae 3562 and Enterobacter aerogenes were immobilized on activated silica gel, where they retained 60 and 50% of respective original activity. The thermal stability of the immobilized lipases was significantly improved in comparison to the free forms while the pH stability remained unchanged. E. aerogenes and R. oryzae 3562 lipases retained 75 and 97% of respective initial activity on incubation at 90 degrees C, whereas both the free forms became inactive at this temperature. The conversion yield of isoamyl acetate was found to be higher with the immobilized fungal (90 vs. 21%) and bacterial lipases (64 vs. 18%) than the respective free forms. Immobilized R. oryzae 3562 lipases retained 50% activity for isoamyl acetate synthesis up to ten cycles whereas it was eight cycles for E. aerogenes.
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Affiliation(s)
- Annapurna Kumari
- Microbial Biotechnology and Downstream Processing Laboratory, Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India
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Immobilized lipase-mediated long-chain fatty acid esterification in dense carbon dioxide: bench-scale packed-bed reactor study. J Supercrit Fluids 2007. [DOI: 10.1016/j.supflu.2006.08.017] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kamrat T, Nidetzky B. Entrapment in E. coli improves the operational stability of recombinant β-glycosidase CelB from Pyrococcus furiosus and facilitates biocatalyst recovery. J Biotechnol 2007; 129:69-76. [PMID: 17212972 DOI: 10.1016/j.jbiotec.2006.11.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Revised: 07/07/2006] [Accepted: 07/18/2006] [Indexed: 11/16/2022]
Abstract
beta-Glycosidase CelB from the hyperthermophilic archaeon Pyrococcus furiosus is a versatile biocatalyst that has been used for the hydrolysis and synthesis of beta-d-glycosidic compounds at high temperatures and in non-conventional solvents. In spite of its outstanding thermal stability, CelB is prone to inactivation in the presence of reducing sugars and through recirculation in loop enzyme reactors. Entrapment into E. coli cells was used here to improve the stability of recombinant CelB under conditions promoting strong inactivation. Glutardialdehyde-mediated protein cross-linking or rigidification of the cell membrane by adding magnesium ions was required to prevent release of CelB from within the cell into the bulk solution. In the presence of 1M glucose or when applying recirculation rates of 2.6 min(-1), the entrapped enzyme was around two-fold more stable at 80 degrees C than free CelB. The significance of the stabilisation was attenuated by the decrease in CelB initial activity which was due to cross-linking and glutardialdehyde concentration-dependent. Entrapment facilitated downstream processing of CelB and biocatalyst recovery in repeated batchwise conversions of lactose at elevated temperatures.
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Affiliation(s)
- Thomas Kamrat
- Research Centre Applied Biocatalysis, Petersgasse 14, c/o Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, Petersgasse 12, A-8010 Graz, Austria
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Synowiecki J, Grzybowska B, Zdziebło A. Sources, Properties and Suitability of New Thermostable Enzymes in Food Processing. Crit Rev Food Sci Nutr 2007; 46:197-205. [PMID: 16527752 DOI: 10.1080/10408690590957296] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Investigations concerning recombinant a-amylases from Pyrococcus woesei and thermostable a-glucosidase from Thermus thermophilus indicate their suitability for starch processing. Furthermore, the study of recombinant ss-galactosidase from Pyrococcus woesei suitable for purpose of low lactose milk and whey production are also presented. The activity of this enzyme in a wide pH range of 4.3-6.6 and high thermostability suggests that it can be used for processing of dairy products at temperatures which restrict microbial growth during a long operating time of continuous-flow reactor with an immobilized enzyme system. Preparation of recombinant a-amylase and ss-galactosidase was facilitated by cloning and expression of genes from Pyrococcus woesei in Escherichia coli host. Satisfactory level of recombinant enzymes purification was achieved by thermal precipitation of native proteins originated from Escherichia coli. The obtained a-amylase has maximal activity at pH 5.6 and 93 degrees C. The half-life of this preparation (pH 5.6) at 90 degrees C and 110 degrees C was 11 h and 3.5 h, respectively, and retained 24% of residual activity following incubation for 2 h at 120 degrees C. An advantageous attribute of recombinant a -amylase is independence of its activity and stability on calcium salt. a-Glucosidase from Thermus thermophilus also not require metal ions for stability and retained about 80% of maximal activity at pH range 5.8-6.9. Thus, this enzyme can be used together with recombinant a-amylase.
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Affiliation(s)
- Józef Synowiecki
- Department of Food Chemistry, Technology and Biotechnology, Chemical Faculty, Gdansk University of Technology, ul. Gabriela Narutowicza 11/12, 80-952, Gdansk, Poland.
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Tu M, Zhang X, Kurabi A, Gilkes N, Mabee W, Saddler J. Immobilization of beta-glucosidase on Eupergit C for lignocellulose hydrolysis. Biotechnol Lett 2006; 28:151-6. [PMID: 16489491 DOI: 10.1007/s10529-005-5328-3] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2005] [Revised: 11/08/2005] [Accepted: 11/10/2005] [Indexed: 10/25/2022]
Abstract
beta-Glucosidase is frequently used to supplement cellulase preparations for hydrolysis of cellulosic and lignocellulosic substrates in order to accelerate the conversion of cellobiose to glucose. Typically, commercial cellulase preparations are deficient in this enzyme and accumulation of cellobiose leads to product inhibition. This study evaluates the potential for recycling beta-glucosidase by immobilization on a methacrylamide polymer carrier, Eupergit C. The immobilized beta-glucosidase had improved stability at 65 degrees C, relative to the free enzyme, while the profile of activity versus pH was unchanged. Immobilization resulted in an increase in the apparent Km from 1.1 to 11 mM: and an increase in Vmax from 296 to 2430 micromol mg(-1) min(-1). The effect of immobilized beta-glucosidase on the hydrolysis of cellulosic and lignocellulosic substrates was comparable to that of the free enzyme when used at the same level of protein. Operational stability of the immobilized beta-glucosidase was demonstrated during six rounds of lignocellulose hydrolysis.
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Affiliation(s)
- Maobing Tu
- Department of Wood Science, Forest Sciences Centre, University of British Columbia, 2424 Main Mall, V6T 1Z4, Vancouver, BC, Canada
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Immobilization of thermostable β-glucosidase from Sulfolobus shibatae by cross-linking with transglutaminase. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2006.03.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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β-Galactosidase from Talaromyces thermophilus immobilized on to Eupergit C for production of galacto-oligosaccharides during lactose hydrolysis in batch and packed-bed reactor. World J Microbiol Biotechnol 2006. [DOI: 10.1007/s11274-006-9292-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Modeling of the simultaneous hydrolysis–ultrafiltration of whey permeate by a thermostable β-galactosidase from Aspergillus niger. Biochem Eng J 2005. [DOI: 10.1016/j.bej.2005.02.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Xi WW, Xu JH. Preparation of enantiopure (S)-ketoprofen by immobilized Candida rugosa lipase in packed bed reactor. Process Biochem 2005. [DOI: 10.1016/j.procbio.2004.08.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pessela BCC, Vian A, Mateo C, Fernández-Lafuente R, García JL, Guisán JM, Carrascosa AV. Overproduction of Thermus sp. Strain T2 beta-galactosidase in Escherichia coli and preparation by using tailor-made metal chelate supports. Appl Environ Microbiol 2003; 69:1967-72. [PMID: 12676671 PMCID: PMC154830 DOI: 10.1128/aem.69.4.1967-1972.2003] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A novel thermostable chimeric beta-galactosidase was constructed by fusing a poly-His tag to the N-terminal region of the beta-galactosidase from Thermus sp. strain T2 to facilitate its overexpression in Escherichia coli and its purification by immobilized metal-ion affinity chromatography (IMAC). The poly-His tag fusion did not affect the activation, kinetic parameters, and stability of the beta-galactosidase. Copper-iminodiacetic acid (Cu-IDA) supports enabled the most rapid adsorption of the His-tagged enzyme, favoring multisubunit interactions, but caused deleterious effects on the enzyme stability. To improve the enzyme purification a selective one-point adsorption was achieved by designing tailor-made low-activated Co-IDA or Ni-IDA supports. The new enzyme was not only useful for industrial purposes but also has become an excellent model to study the purification of large multimeric proteins via selective adsorption on tailor-made IMAC supports.
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Wentworth DS, Skonberg D, Donahue DW, Ghanem A. Application of chitosan-entrapped ?-galactosidase in a packed-bed reactor system. J Appl Polym Sci 2003. [DOI: 10.1002/app.13276] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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