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Dobrange E, Porras-Domínguez JR, Van den Ende W. The Complex GH32 Enzyme Orchestra from Priestia megaterium Holds the Key to Better Discriminate Sucrose-6-phosphate Hydrolases from Other β-Fructofuranosidases in Bacteria. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1302-1320. [PMID: 38175162 DOI: 10.1021/acs.jafc.3c06874] [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: 01/05/2024]
Abstract
Inulin is widely used as a prebiotic and emerging as a priming compound to counteract plant diseases. We isolated inulin-degrading strains from the lettuce phyllosphere, identified as Bacillus subtilis and Priestia megaterium, species hosting well-known biocontrol organisms. To better understand their varying inulin degradation strategies, three intracellular β-fructofuranosidases from P. megaterium NBRC15308 were characterized after expression in Escherichia coli: a predicted sucrose-6-phosphate (Suc6P) hydrolase (SacAP1, supported by molecular docking), an exofructanase (SacAP2), and an invertase (SacAP3). Based on protein multiple sequence and structure alignments of bacterial glycoside hydrolase family 32 enzymes, we identified conserved residues predicted to be involved in binding phosphorylated (Suc6P hydrolases) or nonphosphorylated substrates (invertases and fructanases). Suc6P hydrolases feature positively charged residues near the structural catalytic pocket (histidine, arginine, or lysine), whereas other β-fructofuranosidases contain tryptophans. This correlates with our phylogenetic tree, grouping all predicted Suc6P hydrolases in a clan associated with genomic regions coding for transporters involved in substrate phosphorylation. These results will help to discriminate between Suc6P hydrolases and other β-fructofuranosidases in future studies and to better understand the interaction of B. subtilis and P. megaterium endophytes with sucrose and/or fructans, sugars naturally present in plants or exogenously applied in the context of defense priming.
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Affiliation(s)
- Erin Dobrange
- Laboratory of Molecular Plant Biology, KU Leuven, Kasteelpark Arenberg 31, Leuven 3001, Belgium
| | | | - Wim Van den Ende
- Laboratory of Molecular Plant Biology, KU Leuven, Kasteelpark Arenberg 31, Leuven 3001, Belgium
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2
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Chu J, Tian Y, Li Q, Liu G, Yu Q, Jiang T, He B. Engineering the β-Fructofuranosidase Fru6 with Promoted Transfructosylating Capacity for Fructooligosaccharide Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9694-9702. [PMID: 35900332 DOI: 10.1021/acs.jafc.2c03981] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Levan-type fructooligosaccharides (FOS) exhibit enhanced health-promoting prebiotic effects on gut microbiota. The wild type (WT) of β-fructofuranosidase Fru6 could mainly yield 6-ketose. Semirational design and mutagenesis of Fru6 were exploited to promote the transfructosylating capacity for FOS. The promising variants not only improved the formation of 6-kestose but also newly produced tetrasaccharides of 6,6-nystose and 1,6-nystose (a new type of FOS), and combinatorial mutation boosted the production of 6-kestose and tetrasaccharides (39.9 g/L 6,6-nystose and 4.6 g/L 1,6-nystose). Molecular docking and molecular dynamics (MD) simulation confirmed that the mutated positions reshaped the pocket of Fru6 to accommodate bulky 6-kestose in a reactive conformation with better accessibility for tetrasaccharides formation. Using favored conditions, the variant S165A/H357A could yield 6-kestose up to 335 g/L, and tetrasaccharides (6,6-nystose and 1,6-nystose) reached a high level of 121.1 g/L (134.5 times of the mutant S423A). The β-(2,6)-linked FOS may show the potential application for the prebiotic ingredients.
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Affiliation(s)
- Jianlin Chu
- School of Pharmaceutical Sciences, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Yani Tian
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Qian Li
- School of Pharmaceutical Sciences, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Gaofei Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Qi Yu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Tianyue Jiang
- School of Pharmaceutical Sciences, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
| | - Bingfang He
- School of Pharmaceutical Sciences, Nanjing Tech University, 30 Puzhunan Road, Jiangbei New Area, Nanjing211800, China
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3
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Galvão DFA, Pessoni RAB, Elsztein C, Moreira KA, Morais MA, de Cássia Leone Figueiredo-Ribeiro R, Gaspar M, Morais MMC, Fialho MB, Braga MR. A comparative study between Fusarium solani and Neocosmospora vasinfecta revealed differential profile of fructooligosaccharide production. Folia Microbiol (Praha) 2022; 67:873-889. [PMID: 35729302 DOI: 10.1007/s12223-022-00983-4] [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: 01/27/2022] [Accepted: 06/09/2022] [Indexed: 11/30/2022]
Abstract
Fructooligosaccharides (FOS) are fructose-based oligosaccharides employed as additives to improve the food's nutritional and technological properties. The rhizosphere of plants that accumulate fructopolysaccharides as inulin has been revealed as a source of filamentous fungi. These fungi can produce FOS either by inulin hydrolysis or by biosynthesis from sucrose, including unusual FOS with enhanced prebiotic properties. Here, we investigated the ability of Fusarium solani and Neocosmospora vasinfecta to produce FOS from different carbon sources. Fusarium solani and N. vasinfecta grew preferentially in inulin instead of sucrose, resulting in the FOS production as the result of endo-inulinase activities. N. vasinfecta was also able to produce the FOS 1-kestose and 6-kestose from sucrose, indicating transfructosylating activity, absent in F. solani. Moreover, the results showed how these carbon sources affected fungal cell wall composition and the expression of genes encoding for β-1,3-glucan synthase and chitin synthase. Inulin and fructose promoted changes in fungal macroscopic characteristics partially explained by alterations in cell wall composition. However, these alterations were not directly correlated with the expression of genes related to cell wall synthesis. Altogether, the results pointed to the potential of both F. solani and N. vasinfecta to produce FOS at specific profiles.
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Affiliation(s)
- Daiane F A Galvão
- Unidade Acadêmica de Garanhuns, Universidade Federal Rural de Pernambuco, R. Bom Pastor, s/n, 55 292-270, Garanhuns, PA, Brazil.,Programa de Pós-Graduação em Biologia Celular e Estrutural, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Rosemeire A B Pessoni
- Faculdade da Saúde, Universidade Metodista de São Paulo, Rua Alfeu Tavares, 149, Sao Bernardo do Campo, SP, 09641-000, Brazil
| | - Carolina Elsztein
- Departamento de Genética, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego 1235, 50670-901, Recife PE, Brazil
| | - Keila A Moreira
- Unidade Acadêmica de Garanhuns, Universidade Federal Rural de Pernambuco, R. Bom Pastor, s/n, 55 292-270, Garanhuns, PA, Brazil
| | - Marcos A Morais
- Departamento de Genética, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego 1235, 50670-901, Recife PE, Brazil
| | - Rita de Cássia Leone Figueiredo-Ribeiro
- Núcleo de Conservação da Biodiversidade, Instituto de Pesquisas Ambientais (former Instituto de Botânica), Av. Miguel Stéfano, 3687, São Paulo, SP, 04301-902, Brazil
| | - Marília Gaspar
- Núcleo de Conservação da Biodiversidade, Instituto de Pesquisas Ambientais (former Instituto de Botânica), Av. Miguel Stéfano, 3687, São Paulo, SP, 04301-902, Brazil
| | - Marcia M C Morais
- Instituto de Ciências Biológicas, Universidade de Pernambuco, R. Arnóbio Marques, 310 50100-130, Recife, PA, Brazil
| | - Mauricio B Fialho
- Universidade Federal do ABC, Avenida dos Estados, Santo André, SP, 5001, 09210-580, Brazil.
| | - Marcia R Braga
- Núcleo de Conservação da Biodiversidade, Instituto de Pesquisas Ambientais (former Instituto de Botânica), Av. Miguel Stéfano, 3687, São Paulo, SP, 04301-902, Brazil.
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4
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Ni D, Xu W, Zhu Y, Pang X, Lv J, Mu W. Insight into the effects and biotechnological production of kestoses, the smallest fructooligosaccharides. Crit Rev Biotechnol 2020; 41:34-46. [PMID: 33153319 DOI: 10.1080/07388551.2020.1844622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Kestoses, the smallest fructooligosaccharides, are trisaccharides composed of a fructose molecule and a sucrose molecule linked by either β-(2,1) or β-(2,6) linkage. 1-kestose, 6-kestose and neokestose are the three types of kestoses occurring in nature. As the main kind of fructooligosaccharide, kestoses share similar physiological effects with other fructooligosaccharides, and they have recently been determined to show more notable effects in promoting the growth of probiotics including Faecalibacterium prausnitzii and Bifidobacterium than those of other fructooligosaccharides. Kestoses exist in many plants, but the relatively low content and the isolation and purification are the main barriers limiting their industrial application. The production of kestoses by enzymatic biosynthesis and microbial fermentation has the potential to facilitate its production and industrial use. In this article, the recent advances in the research of kestoses were overviewed, including those studying their functions and production. Kestose-producing enzymes were introduced in detail, and microbial production and fermentation optimization techniques for enhancing the yield of kestoses were addressed. β-Fructofuranosidase is the main one used to produce kestoses because of the extensive range of microbial sources. Therefore, the production of kestoses by microorganisms containing β-fructofuranosidase has also been reviewed. However, few molecular modification studies have attempted to change the production profile of some enzymes and improve the yield of kestoses, which is a topic that should garner more attention. Additionally, the production of kestoses using food-grade microorganisms may be beneficial to their application in the food industry.
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Affiliation(s)
- Dawei Ni
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xiaoyang Pang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiaping Lv
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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5
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Zaninette F, Lopes de Melo Rocha GA, Bom Pessoni RA, Braga MR, Simões K, de Cassia Leone Figueiredo-Ribeiro R, Batista Fialho M. Production of inulin- and neolevan-type fructooligosaccharides by Penicillium janczewskii Zaleski CCIBt 3352. Biotechnol Appl Biochem 2019; 66:419-425. [PMID: 30758071 DOI: 10.1002/bab.1738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 02/12/2019] [Indexed: 11/07/2022]
Abstract
Fructooligosaccharides (FOS) are fructose-based oligosaccharides employed as additives to improve the nutritional and technological properties of foods. The rhizosphere of inulin-accumulating plants from the Cerrado (Brazilian savanna) harbor fungi capable of synthesizing FOS from sucrose through the transfructosylating activity of β-fructosyltransferases and/or β-fructofuranosidases. Here, we investigated the ability of Penicillium janczewskii Zaleski CCIBt 3352, a fungus isolated from the rhizosphere of Chrysolaena obovata (Asteraceae), to produce FOS in a medium supplemented with sucrose concentrations of 30, 100, or 150 g L-1 . Hydrolytic activity on sucrose was observed in culture filtrates; however, at 150 g L-1 sucrose, the accumulation of 8 g L-1 1-kestose (inulin-type FOS) and 7.3 g L-1 neokestose (neolevan-type FOS) was observed, the latter being a type of FOS not commonly produced by filamentous fungi. In addition, minor amounts of four unidentified oligosaccharides, with a high degree of polymerization, were detected. The production of FOS was also observed in enzymatic assays, indicating the presence of extracellular enzymes with transfructosylating activity in the culture filtrates. Our findings demonstrate the feasibility of isolating promising microorganisms, for the production of FOS-synthesizing enzymes, from the rhizosphere of fructan-producing plants of the Brazilian Cerrado.
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Affiliation(s)
- Fernanda Zaninette
- Núcleo de Pesquisa em Fisiologia e Bioquímica, Instituto de Botânica, São Paulo, Brazil
| | | | | | - Marcia Regina Braga
- Núcleo de Pesquisa em Fisiologia e Bioquímica, Instituto de Botânica, São Paulo, Brazil
| | - Kelly Simões
- Núcleo de Pesquisa em Fisiologia e Bioquímica, Instituto de Botânica, São Paulo, Brazil
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6
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Muñiz-Márquez DB, Teixeira JA, Mussatto SI, Contreras-Esquivel JC, Rodríguez-Herrera R, Aguilar CN. Fructo-oligosaccharides (FOS) production by fungal submerged culture using aguamiel as a low-cost by-product. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.12.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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7
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Rodrigo-Frutos D, Piedrabuena D, Sanz-Aparicio J, Fernández-Lobato M. Yeast cultures expressing the Ffase from Schwanniomyces occidentalis, a simple system to produce the potential prebiotic sugar 6-kestose. Appl Microbiol Biotechnol 2018; 103:279-289. [DOI: 10.1007/s00253-018-9446-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/02/2018] [Accepted: 10/09/2018] [Indexed: 12/30/2022]
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8
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Muñiz-Márquez DB, Contreras JC, Rodríguez R, Mussatto SI, Teixeira JA, Aguilar CN. Enhancement of fructosyltransferase and fructooligosaccharides production by A. oryzae DIA-MF in Solid-State Fermentation using aguamiel as culture medium. BIORESOURCE TECHNOLOGY 2016; 213:276-282. [PMID: 27036329 DOI: 10.1016/j.biortech.2016.03.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 06/05/2023]
Abstract
The aim of this work was to improve the production of fructosyltransferase (FTase) by Solid-State Fermentation (SSF) using aguamiel (agave sap) as culture medium and Aspergillus oryzae DIA-MF as producer strain. SSF was carried out evaluating the following parameters: inoculum rate, incubation temperature, initial pH and packing density to determine the most significant factors through Box-Hunter and Hunter design. The significant factors were then further optimized using a Box-Behnken design and response surface methodology. The maximum FTase activity (1347U/L) was obtained at 32°C, using packing density of 0.7g/cm(3). Inoculum rate and initial pH had no significant influence on the response. FOS synthesis applying the enzyme produced by A. oryzae DIA-MF was also studied using aguamiel as substrate.
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Affiliation(s)
- Diana B Muñiz-Márquez
- Group of Bioprocesses, Food Research Department, School of Chemistry, University Autonomous of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Juan C Contreras
- Group of Bioprocesses, Food Research Department, School of Chemistry, University Autonomous of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Raúl Rodríguez
- Group of Bioprocesses, Food Research Department, School of Chemistry, University Autonomous of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Solange I Mussatto
- Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC Delft, Netherlands
| | - José A Teixeira
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal
| | - Cristóbal N Aguilar
- Group of Bioprocesses, Food Research Department, School of Chemistry, University Autonomous of Coahuila, 25280 Saltillo, Coahuila, Mexico.
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Marín-Navarro J, Talens-Perales D, Polaina J. One-pot production of fructooligosaccharides by a Saccharomyces cerevisiae strain expressing an engineered invertase. Appl Microbiol Biotechnol 2014; 99:2549-55. [DOI: 10.1007/s00253-014-6312-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 12/28/2022]
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10
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Xu L, Wang D, Lu L, Jin L, Liu J, Song D, Guo Z, Xiao M. Purification, cloning, characterization, and N-glycosylation analysis of a novel β-fructosidase from Aspergillus oryzae FS4 synthesizing levan- and neolevan-type fructooligosaccharides. PLoS One 2014; 9:e114793. [PMID: 25501957 PMCID: PMC4264766 DOI: 10.1371/journal.pone.0114793] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 11/13/2014] [Indexed: 11/23/2022] Open
Abstract
β-Fructosidases are a widespread group of enzymes that catalyze the hydrolysis of terminal fructosyl units from various substrates. These enzymes also exhibit transglycosylation activity when they function with high concentrations of sucrose, which is used to synthesize fructooligosaccharides (FOS) in the food industry. A β-fructosidase (BfrA) with high transglycosylation activity was purified from Aspergillus oryzae FS4 as a monomeric glycoprotein. Compared with the most extensively studied Aspergillus spp. fructosidases that synthesize inulin-type β-(2-1)-linked FOS, BfrA has unique transfructosylating property of synthesizing levan- and neolevan-type β-(2-6)-linked FOS. The coding sequence (bfrAFS4, 1.86 kb) of BfrA was amplified and expressed in Escherichia coli and Pichia pastoris. Both native and recombinant proteins showed transfructosylation and hydrolyzation activities with broad substrate specificity. These proteins could hydrolyze the following linkages: Glc α-1, 2-β Fru; Glc α-1, 3-α Fru; and Glc α-1, 5-β Fru. Compared with the unglycosylated E. coli-expressed BfrA (E.BfrA), the N-glycosylated native (N.BfrA) and the P. pastoris-expressed BfrA (P.BfrA) were highly stable at a wide pH range (pH 4 to 11), and significantly more thermostable at temperatures up to 50°C with a maximum activity at 55°C. Using sucrose as substrate, the Km and kcat values for total activity were 37.19±5.28 mM and 1.0016±0.039×104 s-1 for N.BfrA. Moreover, 10 of 13 putative N-glycosylation sites were glycosylated on N.BfrA, and N-glycosylation was essential for enzyme thermal stability and optima activity. Thus, BfrA has demonstrated as a well-characterized A. oryzae fructosidase with unique transfructosylating capability of synthesizing levan- and neolevan-type FOS.
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Affiliation(s)
- Li Xu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Dongxue Wang
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Lili Lu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Lan Jin
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Jiawei Liu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Deyong Song
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Zhongwu Guo
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
| | - Min Xiao
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan, PR China
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Chu J, Wu X, Wu B, Wang R, He B. Characteristics of an organic solvent-tolerant β-fructofuranosidase from Arthrobacter arilaitensis NJEM01 and efficient synthesis of prebiotic kestose. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5408-5411. [PMID: 24854707 DOI: 10.1021/jf5020523] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
An organic solvent-tolerant β-fructofuranosidase (β-FFase) from Arthrobacter arilaitensis NJEM01 was purified, characterized, cloned, and overexpressed in Escherichia coli. The mature β-FFase contained 495 amino acid residues with an estimated molecular mass of 55 kDa. The purified β-FFase from strain NJEM01 was very stable in the buffer systems (pH 5.0-9.5) and showed high stability below 45 °C. Furthermore, the enzyme exhibited relatively high solvent stability in various aqueous organic mixtures and retained nearly 100% of its initial activity after incubation for 10 days in 20% (v/v) DMSO. In addition, the β-FFase exhibited high transfructosylation activity, synthesized prebiotic products of mainly 6-kestose (up to 476 g/L), and showed fructosyl receptor specificity to C-glucosyl flavone. A relatively high yield of FOS was achieved by the β-FFase from bacterium with a high concentration of sucrose. It made the β-FFase an exploitable biocatalyst for the production of glycosides of natural products and prebiotic kestose.
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Affiliation(s)
- Jianlin Chu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology , 30 Puzhunan Road, Nanjing 211816, People's Republic of China
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