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Bivolarski V, Iliev I, Ivanova I, Nikolova M, Salim A, Mihaylova G, Vasileva T. Characterization of structure/prebiotic potential correlation of glucans and oligosaccharides synthetized by glucansucrases from fructophilic lactic acid bacteria from honey bee Apis mellifera. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1911683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Veselin Bivolarski
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria
| | - Ilia Iliev
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria
| | - Iskra Ivanova
- Department of General and Industrial Microbiology, Faculty of Biology, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Mariana Nikolova
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria
| | - Ayshe Salim
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University of Varna, Varna, Bulgaria
| | - Galya Mihaylova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University of Varna, Varna, Bulgaria
| | - Tonka Vasileva
- Department of Biochemistry and Microbiology, Faculty of Biology, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria
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Bivolarski V, Vasileva T, Gabriel V, Iliev I. Synthesis of glucooligosaccharides with prebiotic potential by glucansucrase URE 13-300 acceptor reactions with maltose, raffinose and lactose. Eng Life Sci 2018; 18:904-913. [PMID: 32624884 DOI: 10.1002/elsc.201800047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 01/12/2023] Open
Abstract
In the present work, we report an efficient synthesis of glucooligosaccharides (GOSs) with prebiotic potential by novel glucansucrase URE 13-300 from Leuconostoc mesenteroides URE 13 strain. The highest total yield of GOSs with degree of polymerization (DP) from 3 to 6 was obtained with maltose as an acceptor and maltose/sucrose (M/S) ratio 1-136 g/L. An efficient modulation of GOSs composition is achieved by varying the M/S ratio. At M/S = 1, 2, 4 and 7 the content of DP3 products gradually increase from 54.50 to 91.70%. When the M/S ratio was decreased the synthesis of DP>3 GOSs is predominant and reaches 75.60% (M/S = 0.25). In addition, the maltose derived GOSs with DP>3, as well as raffinose and lactose glucosylation products have a branched structure which is prerequisite for increased prebiotic potential. The synthesized GOSs were efficiently metabolized by probiotic strains of Lb. plantarum S26, Lb. brevis S27 and Lb. sakei S16, and the calculated values of specific growth rate (μ) were nearly identical to this on glucose media, when maltose derived GOSs were used as a carbohydrate source. Strain specific features were observed in the utilization of the synthesized GOSs, as well as in the production of lactic acid and acetic acid.
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Affiliation(s)
- Veselin Bivolarski
- Department of Biochemistry and Microbiology Plovdiv University "Paisii Hilendarski" Plovdiv Bulgaria
| | - Tonka Vasileva
- Department of Biochemistry and Microbiology Plovdiv University "Paisii Hilendarski" Plovdiv Bulgaria
| | - Valerie Gabriel
- Laboratory of Food and Environmental Biotechnology (LBAE-EA4565) University Institute of Technology "Paul Sabatier" Auch France
| | - Ilia Iliev
- Department of Biochemistry and Microbiology Plovdiv University "Paisii Hilendarski" Plovdiv Bulgaria
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Moulis C, André I, Remaud-Simeon M. GH13 amylosucrases and GH70 branching sucrases, atypical enzymes in their respective families. Cell Mol Life Sci 2016; 73:2661-79. [PMID: 27141938 PMCID: PMC11108324 DOI: 10.1007/s00018-016-2244-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/22/2022]
Abstract
Amylosucrases and branching sucrases are α-retaining transglucosylases found in the glycoside-hydrolase families 13 and 70, respectively, of the clan GH-H. These enzymes display unique activities in their respective families. Using sucrose as substrate and without mediation of nucleotide-activated sugars, amylosucrase catalyzes the formation of an α-(1 → 4) linked glucan that resembles amylose. In contrast, the recently discovered branching sucrases are unable to catalyze polymerization of glucosyl units as they are rather specific for dextran branching through α-(1 → 2) or α-(1 → 3) branching linkages depending on the enzyme regiospecificity. In addition, GH13 amylosucrases and GH70 branching sucrases are naturally promiscuous and can glucosylate different types of acceptor molecules including sugars, polyols, or flavonoids. Amylosucrases have been the most investigated glucansucrases, in particular to control product profiles or to successfully develop tailored α-transglucosylases able to glucosylate various molecules of interest, for example, chemically protected carbohydrates that are planned to enter in chemoenzymatic pathways. The structural traits of these atypical enzymes will be described and compared, and an overview of the potential of natural or engineered enzymes for glycodiversification and chemoenzymatic synthesis will be highlighted.
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Affiliation(s)
- Claire Moulis
- Université de Toulouse, INSA, UPS, INP, LISBP, 135 Avenue de Rangueil, 31077, Toulouse, France
- CNRS, UMR5504, 31400, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, 31400, Toulouse, France
| | - Isabelle André
- Université de Toulouse, INSA, UPS, INP, LISBP, 135 Avenue de Rangueil, 31077, Toulouse, France
- CNRS, UMR5504, 31400, Toulouse, France
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, 31400, Toulouse, France
| | - Magali Remaud-Simeon
- Université de Toulouse, INSA, UPS, INP, LISBP, 135 Avenue de Rangueil, 31077, Toulouse, France.
- CNRS, UMR5504, 31400, Toulouse, France.
- INRA, UMR792 Ingénierie des Systèmes Biologiques et des Procédés, 31400, Toulouse, France.
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Vuillemin M, Claverie M, Brison Y, Séverac E, Bondy P, Morel S, Monsan P, Moulis C, Remaud-Siméon M. Characterization of the First α-(1→3) Branching Sucrases of the GH70 Family. J Biol Chem 2016; 291:7687-702. [PMID: 26763236 PMCID: PMC4817194 DOI: 10.1074/jbc.m115.688044] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/11/2016] [Indexed: 01/17/2023] Open
Abstract
Leuconostoc citreumNRRL B-742 has been known for years to produce a highly α-(1→3)-branched dextran for which the synthesis had never been elucidated. In this work a gene coding for a putative α-transglucosylase of the GH70 family was identified in the reported genome of this bacteria and functionally characterized. From sucrose alone, the corresponding recombinant protein, named BRS-B, mainly catalyzed sucrose hydrolysis and leucrose synthesis. However, in the presence of sucrose and a dextran acceptor, the enzyme efficiently transferred the glucosyl residue from sucrose to linear α-(1→6) dextrans through the specific formation of α-(1→3) linkages. To date, BRS-B is the first reported α-(1→3) branching sucrase. Using a suitable sucrose/dextran ratio, a comb-like dextran with 50% of α-(1→3) branching was synthesized, suggesting that BRS-B is likely involved in the comb-like dextran produced byL. citreumNRRL B-742. In addition, data mining based on the search for specific sequence motifs allowed the identification of two genes putatively coding for branching sucrases in the genome ofLeuconostoc fallaxKCTC3537 andLactobacillus kunkeeiEFB6. Biochemical characterization of the corresponding recombinant enzymes confirmed their branching specificity, revealing that branching sucrases are not only found inL. citreumspecies. According to phylogenetic analyses, these enzymes are proposed to constitute a new subgroup of the GH70 family.
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Affiliation(s)
- Marlène Vuillemin
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Marion Claverie
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Yoann Brison
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Etienne Séverac
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Pauline Bondy
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Sandrine Morel
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Pierre Monsan
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Claire Moulis
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
| | - Magali Remaud-Siméon
- From the Université de Toulouse, Institut National des Sciences Appliquées (INSA), Université Paul Sabatié (UPS), Institut National Polytechnique (INP), Laboratoire d'Ingénieries des Systèmes Biologiques et des Procédés (LISBP), 135 Avenue de Rangueil, F-31077 Toulouse, France, CNRS, UMR5504, F-31400 Toulouse, France, and Institut National de la Recherche Agronomique (INRA), UMR792 Ingénierie des Systèmes Biologiques et des Procédés, F-3140 Toulouse, France
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Wang S, Sun X, Gao L, Zhang B. Effects of differences between cell-free and cell-associated glucosyltransferases fromLeuconostoc mesenteroideson gluco-oligosaccharides structure. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Song Wang
- College of Biological Sciences and Biotechnology; Beijing Forestry University; Box 162 Qinghua E Road 35 Beijing China
| | - Xiaoqi Sun
- College of Biological Sciences and Biotechnology; Beijing Forestry University; Box 162 Qinghua E Road 35 Beijing China
| | - Lili Gao
- College of Biological Sciences and Biotechnology; Beijing Forestry University; Box 162 Qinghua E Road 35 Beijing China
| | - Bolin Zhang
- College of Biological Sciences and Biotechnology; Beijing Forestry University; Box 162 Qinghua E Road 35 Beijing China
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6
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Lime application for the efficient production of nutraceutical glucooligosaccharides from Leuconostoc mesenteroides NRRL B-742 (ATCC13146). J Ind Microbiol Biotechnol 2015; 42:279-85. [DOI: 10.1007/s10295-014-1568-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/12/2014] [Indexed: 10/24/2022]
Abstract
Abstract
We have previously demonstrated the production of glucooligosaccharides via a fermentation of sucrose with Leuconostoc mesenteroides NRRL B-742 using sodium hydroxide (NaOH) to control the pH. Because NaOH is expensive, we sought to minimize the cost of our process by substituting hydrated lime and saccharate of lime (lime sucrate) in its place. The yield of glucooligosaccharides using either 5 % lime (41.4 ± 0.5 g/100 g) or 5 % lime sucrate (40.0 ± 1.4 g/100 g) were both similar to the NaOH control (42.4 ± 1.5 g/100 g). Based on this, it appears that the cost associated with pH control in our process can be reduced by a factor of approximately 2.4 using lime instead of NaOH. Because our chromatographic stage is based on a Ca2+-form resin to separate glucooligosaccharides, the use of lime not only negates the need for costly de-salting via ion-exchange (elimination of two ion-exchange sections) prior to separation, but also greatly reduces the resin regeneration cost.
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7
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Díez-Municio M, Herrero M, Olano A, Moreno FJ. Synthesis of novel bioactive lactose-derived oligosaccharides by microbial glycoside hydrolases. Microb Biotechnol 2014; 7:315-31. [PMID: 24690139 PMCID: PMC4241725 DOI: 10.1111/1751-7915.12124] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 02/21/2014] [Accepted: 02/23/2014] [Indexed: 12/17/2022] Open
Abstract
Prebiotic oligosaccharides are increasingly demanded within the Food Science domain because of the interesting healthy properties that these compounds may induce to the organism, thanks to their beneficial intestinal microbiota growth promotion ability. In this regard, the development of new efficient, convenient and affordable methods to obtain this class of compounds might expand even further their use as functional ingredients. This review presents an overview on the most recent interesting approaches to synthesize lactose-derived oligosaccharides with potential prebiotic activity paying special focus on the microbial glycoside hydrolases that can be effectively employed to obtain these prebiotic compounds. The most notable advantages of using lactose-derived carbohydrates such as lactosucrose, galactooligosaccharides from lactulose, lactulosucrose and 2-α-glucosyl-lactose are also described and commented.
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Affiliation(s)
- Marina Díez-Municio
- Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), CEI (UAM+CSIC)C/ Nicolás Cabrera 9, Madrid, 28049, Spain
| | - Miguel Herrero
- Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), CEI (UAM+CSIC)C/ Nicolás Cabrera 9, Madrid, 28049, Spain
| | - Agustín Olano
- Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), CEI (UAM+CSIC)C/ Nicolás Cabrera 9, Madrid, 28049, Spain
| | - F Javier Moreno
- Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), CEI (UAM+CSIC)C/ Nicolás Cabrera 9, Madrid, 28049, Spain
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8
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Bivolarski V, Vasileva T, Dzhambazov B, Momchilova A, Chobert JM, Ivanova I, Iliev I. Characterization of Glucansucrases and Fructansucrases Produced by Wild StrainsLeuconostoc MesenteroidesURE13 andLeuconostoc MesenteroidesLM17 Grown on Glucose or Fructose Medium as a Sole Carbon Source. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.5504/bbeq.2013.0017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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9
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Wang S, Mao X, Wang H, Lin J, Li F, Wei D. Characterization of a novel dextran produced by Gluconobacter oxydans DSM 2003. Appl Microbiol Biotechnol 2011; 91:287-94. [PMID: 21499762 DOI: 10.1007/s00253-011-3267-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/15/2011] [Accepted: 03/15/2011] [Indexed: 11/26/2022]
Abstract
A novel water-soluble dextran was synthesized from maltodextrin by cell-free extract of Gluconobacter oxydans DSM 2003. The dextran was purified by size exclusion chromatography, and the structure was determined by Fourier transform infrared spectroscopy, nuclear magnetic resonance, and gas chromatography-mass spectrometer. Based on the spectral data, we found that the dextran contained only D-glucose residues. The ratio of nonreducing end glucopyranosyl (Glcp) to 6-linked Glcp to 4,6-linked Glcp was estimated to be 8.62:78.79:12.59 by methylation analysis. This result indicated the existence of a small proportion of α(1,4) branches in α(1,6) glucosyl linear chains. Here, we reported the first time a novel dextran was synthesized by G. oxydans DSM 2003.
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Affiliation(s)
- Shu Wang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
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Vettori MHPB, Mukerjea R, Robyt JF. Comparative study of the efficacies of nine assay methods for the dextransucrase synthesis of dextran. Carbohydr Res 2011; 346:1077-82. [PMID: 21529789 DOI: 10.1016/j.carres.2011.02.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 02/09/2011] [Accepted: 02/15/2011] [Indexed: 11/17/2022]
Abstract
A comparative study of nine assay methods for dextransucrase and related enzymes has been made. A relatively widespread method for the reaction of dextransucrase with sucrose is the measurement of the reducing value of D-fructose by alkaline 3,5-dinitrosalicylate (DNS) and thereby the amount of D-glucose incorporated into dextran. Another method is the reaction with (14)C-sucrose with the addition of an aliquot to Whatman 3MM paper squares that are washed three times with methanol to remove (14)C-D-fructose and unreacted (14)C-sucrose, followed by counting of (14)C-dextran on the paper by liquid scintillation counting (LSC). It is shown that both methods give erroneous results. The DNS reducing value method gives extremely high values due to over-oxidation of both D-fructose and dextran, and the (14)C-paper square method gives significantly low values due to the removal of some of the (14)C-dextran from the paper by methanol washes. In the present study, we have examined nine methods and find two that give values that are identical and are an accurate measurement of the dextransucrase reaction. They are (1) a (14)C-sucrose/dextransucrase digest in which dextran is precipitated three times with three volumes of ethanol, dissolved in water, and added to paper and counted in a toluene cocktail by LSC; and (2) precipitation of dextran three times with three volumes of ethanol from a sucrose/dextransucrase digest, dried, and weighed. Four reducing value methods were examined to measure the amount of D-fructose. Three of the four (two DNS methods, one with both dextran and D-fructose and the other with only D-fructose, and the ferricyanide/arsenomolybdate method with D-fructose) gave extremely high values due to over-oxidation of D-fructose, D-glucose, leucrose, and dextran.
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Affiliation(s)
- Mary Helen P B Vettori
- Laboratory of Carbohydrate Chemistry and Enzymology, Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames, IA 50011, USA
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Dols M, Remaud-Simeon M, Willemot RM, Vignon M, Monsan P. Characterization of the Different Dextransucrase Activities Excreted in Glucose, Fructose, or Sucrose Medium by Leuconostoc mesenteroides NRRL B-1299. Appl Environ Microbiol 2010; 64:1298-302. [PMID: 16349539 PMCID: PMC106144 DOI: 10.1128/aem.64.4.1298-1302.1998] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
When grown in glucose or fructose medium in the absence of sucrose, Leuconostoc mesenteroides NRRL B-1299 produces two distinct extracellular dextransucrases named glucose glucosyltransferase (GGT) and fructose glucosyltransferase (FGT). The production level of GGT and FGT is 10 to 20 times lower than that of the extracellular dextransucrase sucrose glucosyltransferase (SGT) produced on sucrose medium (traditional culture conditions). GGT and FGT were concentrated by ultrafiltration before sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis. Their molecular masses were 183 and 186 kDa, respectively, differing from the 195 kDa of SGT. The structural analysis of the dextran produced from sucrose and of the oligosaccharides synthesized by acceptor reaction in the presence of maltose showed that GGT and FGT are two different enzymes not previously described for this strain. The polymer synthesized by GGT contains 30% alpha(1-->2) linkages, while FGT catalyzes the synthesis of a linear dextran only composed of alpha(1-->6) linkages.
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Affiliation(s)
- M Dols
- Centre de Bioingénierie Gilbert Durand, U.M.R. C.N.R.S. 5504 and Laboratoire Associeé I.N.R.A., D.G.B.A., I.N.S.A., Complexe Scientifique de Rangueil, 31 077 Toulouse Cedex 4, France
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12
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Iliev I, Vassileva T, Ignatova C, Ivanova I, Haertlé T, Monsan P, Chobert JM. Gluco-oligosaccharides synthesized by glucosyltransferases from constitutive mutants of Leuconostoc mesenteroides strain Lm 28. J Appl Microbiol 2007; 104:243-50. [PMID: 17887982 DOI: 10.1111/j.1365-2672.2007.03555.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To find different types of glucosyltransferases (GTFs) produced by Leuconostoc mesenteroides strain Lm 28 and its mutant forms, and to check the effectiveness of gluco-oligosaccharide synthesis using maltose as the acceptor. METHODS AND RESULTS Constitutive mutants were obtained after chemical mutagenesis by ethyl methane sulfonate. Lm M281 produced more active GTFs than that obtained by the parental strain cultivated on sucrose. GTF from Lm M286 produced a resistant glucan, based on endo-dextranase and amyloglucosidase hydrolysis. The extracellular enzymes from Lm M286 catalyse acceptor reactions and transfer the glucose unit from sucrose to maltose to produce gluco-oligosaccharides (GOS). By increasing the sucrose/maltose ratio, it was possible to catalyse the synthesis of oligosaccharides of increasing degree of polymerization (DP). CONCLUSIONS Different types of GTFs (dextransucrase, alternansucrase and levansucrase) were produced from new constitutive mutants of Leuc. mesenteroides. GTFs from Lm M286 can catalyse the acceptor reaction in the presence of maltose, leading to the synthesis of branched oligosaccharides. SIGNIFICANCE AND IMPACT OF THE STUDY Conditions were optimized to synthesize GOS by using GTFs from Lm M286, with the aim of producing maximum quantities of branched-chain oligosaccharides with DP 3-5. This would allow the use of the latter as prebiotics.
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Affiliation(s)
- I Iliev
- Department of Biochemistry and Microbiology, Plovdiv University, Plovdiv, Bulgaria
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13
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Côté GL, Leathers TD. A method for surveying and classifying Leuconostoc spp. glucansucrases according to strain-dependent acceptor product patterns. J Ind Microbiol Biotechnol 2005; 32:53-60. [PMID: 15714308 DOI: 10.1007/s10295-004-0194-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2004] [Accepted: 11/25/2004] [Indexed: 10/25/2022]
Abstract
A number of Leuconostoc spp. strains were screened for their ability to produce glucansucrases and carry out acceptor reactions with maltose. Acceptor products were analyzed by thin-layer chromatography (TLC) and it was discovered that they could be grouped into four distinct categories based on oligosaccharide product patterns. These patterns corresponded with structural features of the dextrans each strain is reported to produce. Strains that produced a typical dextran-characterized by a predominantly linear alpha(1-->6)-linked D: -glucan chain with a low to moderate degree of branching-produced a homologous series of isomaltooligosaccharides via acceptor reactions. Strains that produced dextrans with moderate to high levels of alpha(1-->2) branch points, exemplified by NRRL B-1299, synthesized the same isomaltodextrins as well as another series of oligosaccharides migrating slightly faster in our TLC system. Strains that produced dextrans with higher levels of alpha(1-->3)-branches, such as NRRL B-742, synthesized isomaltodextrins plus a series of oligosaccharides that migrated slightly more slowly on TLC. And finally, strains known to produce alternansucrase produced isomaltodextrins plus oligoalternans. Within a given type, variability exists in the relative proportions of each product. The data presented here may be useful in selecting strains for the production of specific types of oligosaccharides, for example as prebiotics.
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Affiliation(s)
- Gregory L Côté
- Fermentation Biotechnology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., Peoria, IL 61604, USA.
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Richard G, Morel S, Willemot RM, Monsan P, Remaud-Simeon M. Glucosylation of alpha-butyl- and alpha-octyl-D-glucopyranosides by dextransucrase and alternansucrase from Leuconostoc mesenteroides. Carbohydr Res 2003; 338:855-64. [PMID: 12681910 DOI: 10.1016/s0008-6215(03)00070-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
For the first time, glucosylation of alpha-butyl- and alpha-octylglucopyranoside was achieved using dextransucrase (DS) of various specificities, and alternansucrase (AS) from Leuconostoc mesenteroides. All the glucansucrases (GS) tested used alpha-butylglucopyranoside as acceptor; in particular, DS produced alpha-D-glucopyranosyl-(1-->6)-O-butyl-alpha-D-glucopyranoside and alpha-D-glucopyranosyl-(1-->6)-alpha-D-glucopyranosyl-(1-->6)-O-butyl-alpha-D-glucopyranoside. In contrast, alpha-octylglucopyranoside was glucosylated only by AS which was shown to be the most efficient catalyst. The conversion rates, obtained with this enzyme at sucrose to acceptor molar ratio of 2:1 reached 81 and 61% for alpha-butylglucopyranoside and alpha-octylglucopyranoside, respectively. Analyses obtained from liquid chromatography coupled with mass spectrometry revealed that different series of alpha-alkylpolyglucopyranosides regioisomers of increasing polymerization degree can be formed depending on the specificity of the catalyst.
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Affiliation(s)
- Gaëtan Richard
- Département de Génie Biochimique et Alimentaire, Centre de Bioingénierie Gilbert Durand, UMR CNRS 5504, UMR INRA 792, INSA, 135 Avenue de Rangueil, 31077 Toulouse 4, France
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Bozonnet S, Dols-Laffargue M, Fabre E, Pizzut S, Remaud-Simeon M, Monsan P, Willemot RM. Molecular characterization of DSR-E, an alpha-1,2 linkage-synthesizing dextransucrase with two catalytic domains. J Bacteriol 2002; 184:5753-61. [PMID: 12270834 PMCID: PMC139595 DOI: 10.1128/jb.184.20.5753-5761.2002] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A novel Leuconostoc mesenteroides NRRL B-1299 dextransucrase gene, dsrE, was isolated, sequenced, and cloned in Escherichia coli, and the recombinant enzyme was shown to be an original glucansucrase which catalyses the synthesis of alpha-1,6 and alpha-1,2 linkages. The nucleotide sequence of the dsrE gene consists of an open reading frame of 8,508 bp coding for a 2,835-amino-acid protein with a molecular mass of 313,267 Da. This is twice the average mass of the glucosyltransferases (GTFs) known so far, which is consistent with the presence of an additional catalytic domain located at the carboxy terminus of the protein and of a central glucan-binding domain, which is also significantly longer than in other glucansucrases. From sequence comparison with family 70 and alpha-amylase enzymes, crucial amino acids involved in the catalytic mechanism were identified, and several original sequences located at some highly conserved regions in GTFs were observed in the second catalytic domain.
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Affiliation(s)
- Sophie Bozonnet
- Centre de Bioingéniérie Gilbert Durand, UMR CNRS 5504, UMR INRA 792, DGBA INSA, 31077 Toulouse Cedex 04, France
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Monchois V, Vignon M, Escalier PC, Svensson B, Russell RR. Involvement of Gln937 of Streptococcus downei GTF-I glucansucrase in transition-state stabilization. EUROPEAN JOURNAL OF BIOCHEMISTRY 2000; 267:4127-36. [PMID: 10866815 DOI: 10.1046/j.1432-1327.2000.01448.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Multiple alignment of deduced amino-acid sequences of glucansucrases (glucosyltransferases and dextransucrases) from oral streptococci and Leuconostoc mesenteroides has shown them to share a well-conserved catalytic domain. A portion of this domain displays homology to members of the alpha-amylase family (glycoside hydrolase family 13), which all have a (beta/alpha)8 barrel structure. In the glucansucrases, however, the alpha-helix and beta-strand elements are circularly permuted with respect to the order in family 13. Previous work has shown that amino-acid residues contributing to the active site of glucansucrases are situated in structural elements that align with those of family 13. In alpha-amylase and cyclodextrin glucanotransferase, a histidine residue has been identified that acts to stabilize the transition state, and a histidine is conserved at the corresponding position in all other members of family 13. In all the glucansucrases, however, the aligned position is occupied by glutamine. Mutants of glucosyltransferase I were constructed in which this glutamine, Gln937, was changed to histidine, glutamic acid, aspartic acid, asparagine or alanine. The effects on specific activity, ability to form glucan and ability to transfer glucose to a maltose acceptor were examined. Only histidine could substitute for glutamine and maintain Michaelis-Menten kinetics, albeit at a greatly reduced kcat, showing that Gln937 plays a functionally equivalent role to the histidine in family 13. This provides additional evidence in support of the proposed alignment of the (beta/alpha)8 barrel structures. Mutation at position 937 altered the acceptor reaction with maltose, and resulted in the synthesis of novel gluco-oligosaccharides in which alpha1,3-linked glucosyl units are joined sequentially to maltose.
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Affiliation(s)
- V Monchois
- Department of Oral Biology, The Dental School, University of Newcastle upon Tyne, UK
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Dols M, Simeon MR, Willemot RM, Vignon MR, Monsan PF. Structural characterization of the maltose acceptor-products synthesized by Leuconostoc mesenteroides NRRL B-1299 dextransucrase. Carbohydr Res 1997; 305:549-59. [PMID: 9648272 DOI: 10.1016/s0008-6215(97)10063-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The glucooligosaccharides (GOS), produced by Leuconostoc mesenteroides NRRL B-1299 dextransucrase through an acceptor reaction with maltose and sucrose, were purified by reverse phase chromatography. Logarithmic plots of retention time vs. dp of the GOS gave three parallel lines suggesting the existence of at least three families of homologous molecules. The structure (13C and 1H NMR spectroscopy) and reactivity of the purified molecules of the three families were investigated. All the products bear a maltose residue at the reducing end. The GOS in the first family (named OD) contained additional glucosyl residues all alpha-(1-->6) linked. The smallest molecule in this first series was panose or alpha-D-glucopyranosyl-(1-->6)-D-maltose (dp 3). All the OD molecules were shown to be good acceptors for dextransucrase in the presence of sucrose. The second family, named R, was composed of linear GOS containing alpha-(1-->6)-linked glucosyl residues and a terminal alpha-(1-->2)-linked residue at the non-reducing end of the molecule; the smallest molecule in this family was alpha-D-glucopyranosyl-(1-->2)-D-panose (dp 4). The third family, R', was formed of GOS containing additional residues linked through alpha-(1-->6) linkages that constitute the linear chain, and an alpha-(1-->2)-branched residue located on the penultimate element of the chain, near the non-reducing end. The smallest molecule in this series is alpha-D-glucopyranosyl-(1-->6)-[alpha-D-glucopyranosyl-(1-->2)]-alpha-D- glucopyranosyl-(1-->6)-D-panose, dp 6. R and R' GOS are very poor acceptors for L. mesenteroides NRRL B-1299 dextransucrase. This study makes it possible to suggest a rather simple reaction scheme, where molecules Ri, R'i and ODi of the same dp all result from the glucosylation of the same GOS: ODi-l.
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Affiliation(s)
- M Dols
- Centre de Bioingénierie Gilbert Durand, UMR 5504, D.G.B.A., INSA, Complexe Scientifique de Rangueil, Toulouse, France
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Kim D, Robyt JF. Production, selection, and characteristics of mutants of Leuconostoc mesenteroides B-742 constitutive for dextransucrases. Enzyme Microb Technol 1995. [DOI: 10.1016/0141-0229(94)00021-i] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Monsan P, Paul F, Auriol D. New developments in the application of enzymes to synthesis reactions. Peptides and oligosaccharides. Ann N Y Acad Sci 1995; 750:357-63. [PMID: 7785865 DOI: 10.1111/j.1749-6632.1995.tb19980.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Chapter 9 Preparative HPLC of Carbohydrates. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0301-4770(08)60514-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Studies on a recombinant amylosucrase. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0921-0423(06)80113-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Smith MR, Zahnley J, Goodman N. Glucosyltransferase Mutants of
Leuconostoc mesenteroides
NRRL B-1355. Appl Environ Microbiol 1994; 60:2723-31. [PMID: 16349346 PMCID: PMC201715 DOI: 10.1128/aem.60.8.2723-2731.1994] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Leuconostoc mesenteroides
NRRL B-1355 produces dextrans and alternan from sucrose. Alternan is an unusual dextran-like polymer containing alternating α(1→6)/α(1→3) glucosidic bonds. Cultures were mutagenized with UV and ethyl methanesulfonate, and colony morphology mutants were selected on 10% sucrose plates. Colony morphology variants exhibited changes from parent cultures in the production of one or more glucosyltransferases (GTFs) and glucans. Mutants were characterized by measuring resistance of glucan products to dextranase digestion, by electrophoresis, and by high-pressure liquid chromatography of maltose acceptor products generated from sucrose-maltose mixtures. Some mutants produced almost pure fraction L dextran, and cultures exhibited a single principal GTF band on sodium dodecyl sulfate-acrylamide gels. Other mutants produced glucans enriched for alternan. Colony morphology characteristics (size, smoothness, and opacity) and liquid culture properties (clumpiness, color, and viscosity in 10% sucrose medium) were explained on the basis of GTF production. Three principal GTF bands were detected.
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Affiliation(s)
- M R Smith
- Western Regional Research Center, U.S. Department of Agriculture, Albany, California 94710
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Remaud-Simeon M, Lopez-Munguia A, Pelenc V, Paul F, Monsan P. Production and use of glucosyltransferases from Leuconostoc mesenteroides NRRL B-1299 for the synthesis of oligosaccharides containing alpha-(1-->2) linkages. Appl Biochem Biotechnol 1994; 44:101-17. [PMID: 8017898 DOI: 10.1007/bf02921648] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Glucosyltransferase activities, produced by batch culture of Leuconostoc mesenteroides NRRL B-1299, were recovered both in the culture supernatant (SGT) and associated with the insoluble part of the culture (IGT). A total glucosyltransferase activity of 3.5 U/mL was measured in batch culture. The enzymes from the supernatant were purified 313 times using aqueous two-phase partition between dextran and PEG phases, yielding a preparation with 18.8 U/mg protein. It was shown that both SGT and IGT preparations catalyze acceptor reactions and transfer the glucose unit from sucrose onto maltose to produce glucooligosaccharides. Some of the glucooligosaccharides synthesized (Ln series) contain alpha-(1-->6) osidic linkages and a maltose residue at the reducing end. They were completely hydrolyzed by glucoamylase and dextranase. The other glucooligosaccharides synthesized (Bn series) resisted the action of these enzymes. The tetrasaccharide of this series has been characterized by 13C NMR. Its structure was determined as 2-O-alpha-D-glucosylpanose. The oligosaccharides synthesized by the maltose acceptor reaction with the SGT and IGT preparations only differed in the relative amounts in which they were produced. The difference may arise from diffusional limitations appearing when the insoluble catalyst is used. Under the assay conditions, the glucanase resistant oligosaccharide yield was 35% with both glucosyltransferase preparations.
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López-Munguía A, Pelenc V, Remaud M, Biton J, Michel J, Lang C, Paul F, Monsan P. Production and purification of alternansucrase, a glucosyltransferase from Leuconostoc mesenteroides NRRL B-1355, for the synthesis of oligoalternans. Enzyme Microb Technol 1993. [DOI: 10.1016/0141-0229(93)90120-q] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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