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Bielas R, Wróbel-Marek J, Kurczyńska EU, Neugebauer D. Rhodamine-Tagged Polymethacrylate Dyes as Alternative Tools for Analysis of Plant Cells. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7720. [PMID: 36363313 PMCID: PMC9658429 DOI: 10.3390/ma15217720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
A rhodamine B (RhB)-based initiator for atom transfer radical polymerization (ATRP) was synthesized and applied for preparation of poly(2-trimethylammoniumethyl methacrylate) (PChMA), poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(2-trimethylsilyloxyethyl methacrylate) (PHEMATMS). Polymer fluorescence was confirmed by determination of quantum yield by comparative method with piroxicam as the standard exhibiting dependency of emission intensity on the polymer chain hydrophilicity and the kind of solvent. The RhB functionalized polymers were used for biological tests in plant materials except for RhB-PHEMATMS because of weak fluorescence. These two polymers slightly differed in cellular localization. RhB-PChMA was mostly observed in cell walls of root tissues and cotyledon epidermis. It was also observed in cytoplasm and cell organelles of root cap cells and rhizodermis, in contrast with cytoplasm of cotyledon epidermis. RhB-PHEMA was also present in apoplast. A strong signal in protoxylem cell walls and a weak signal in cell walls of rhizodermis and cortex were visible. Moreover, it was also present in cell walls of cotyledon epidermis. However, RhB-PHEMA was mostly observed in cytoplasm and cell organelles of all root tissues and epidermis of cotyledons. Both RhB-polymers did not cause cell death which means that they can be used in living plant material.
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Affiliation(s)
- Rafał Bielas
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Justyna Wróbel-Marek
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellońska 28, 40-032 Katowice, Poland
| | - Ewa U. Kurczyńska
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellońska 28, 40-032 Katowice, Poland
| | - Dorota Neugebauer
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
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2
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The role of dextran and maltosyl-isomalto-oligosaccharides on the structure of bread enriched with surplus bread. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Schmid J, Wefers D, Vogel RF, Jakob F. Analysis of Structural and Functional Differences of Glucans Produced by the Natively Released Dextransucrase of Liquorilactobacillus hordei TMW 1.1822. Appl Biochem Biotechnol 2021; 193:96-110. [PMID: 32820351 PMCID: PMC7790797 DOI: 10.1007/s12010-020-03407-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/12/2020] [Indexed: 11/26/2022]
Abstract
The properties of the glucopolymer dextran are versatile and linked to its molecular size, structure, branching, and secondary structure. However, suited strategies to control and exploit the variable structures of dextrans are scarce. The aim of this study was to delineate structural and functional differences of dextrans, which were produced in buffers at different conditions using the native dextransucrase released by Liquorilactobacillus (L.) hordei TMW 1.1822. Rheological measurements revealed that dextran produced at pH 4.0 (MW = 1.1 * 108 Da) exhibited the properties of a viscoelastic fluid up to concentrations of 10% (w/v). By contrast, dextran produced at pH 5.5 (MW = 1.86 * 108 Da) was gel-forming already at 7.5% (w/v). As both dextrans exhibited comparable molecular structures, the molecular weight primarily influenced their rheological properties. The addition of maltose to the production assays caused the formation of the trisaccharide panose instead of dextran. Moreover, pre-cultures of L. hordei TMW 1.1822 grown without sucrose were substantial for recovery of higher dextran yields, since the cells stored the constitutively expressed dextransucrase intracellularly, until sucrose became available. These findings can be exploited for the controlled recovery of functionally diverse dextrans and oligosaccharides by the use of one dextransucrase type.
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Affiliation(s)
- Jonas Schmid
- Chair of Technical Microbiology, Technical University of Munich (TUM), Freising, Germany
| | - Daniel Wefers
- Division of Food Chemistry, Institute of Chemistry, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Rudi F Vogel
- Chair of Technical Microbiology, Technical University of Munich (TUM), Freising, Germany
| | - Frank Jakob
- Chair of Technical Microbiology, Technical University of Munich (TUM), Freising, Germany.
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Nolte J, Kempa A, Hochgürtel M, Schörken U. Glucansucrases from lactic acid bacteria as biocatalysts for multi-ring catechol glucosylation. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1784882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Johannes Nolte
- Faculty of Applied Natural Sciences, TH Köln – Campus Leverkusen, Leverkusen, Germany
- Vetter Pharma-Fertigung GmbH & Co. KG, Ravensburg, Germany
| | - Alexander Kempa
- Faculty of Applied Natural Sciences, TH Köln – Campus Leverkusen, Leverkusen, Germany
- R&R Extrakte GmbH, Köln, Germany
| | - Matthias Hochgürtel
- Faculty of Applied Natural Sciences, TH Köln – Campus Leverkusen, Leverkusen, Germany
| | - Ulrich Schörken
- Faculty of Applied Natural Sciences, TH Köln – Campus Leverkusen, Leverkusen, Germany
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Claverie M, Cioci G, Vuillemin M, Monties N, Roblin P, Lippens G, Remaud-Simeon M, Moulis C. Investigations on the Determinants Responsible for Low Molar Mass Dextran Formation by DSR-M Dextransucrase. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02182] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Marion Claverie
- LISBP, Université de Toulouse, CNRS, INRA,
INSA, Toulouse, France
| | - Gianluca Cioci
- LISBP, Université de Toulouse, CNRS, INRA,
INSA, Toulouse, France
| | | | - Nelly Monties
- LISBP, Université de Toulouse, CNRS, INRA,
INSA, Toulouse, France
| | - Pierre Roblin
- Université de Toulouse, LGC UMR 5503 (CNRS/UPS/INPT), 118 route de Narbonne 31062 Toulouse, France
| | - Guy Lippens
- LISBP, Université de Toulouse, CNRS, INRA,
INSA, Toulouse, France
| | | | - Claire Moulis
- LISBP, Université de Toulouse, CNRS, INRA,
INSA, Toulouse, France
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Enzymatic synthesis using immobilized Enterococcus faecalis Esawy dextransucrase and some applied studies. Int J Biol Macromol 2016; 92:56-62. [PMID: 27327909 DOI: 10.1016/j.ijbiomac.2016.06.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/08/2016] [Accepted: 06/13/2016] [Indexed: 11/22/2022]
Abstract
Dextrans enzymatic synthesis by immobilized Enterococcus faecalis Esawy dextransucrase was studied. Different parameters, such as: enzyme protein concentration (EPC), substrate concentration (SC), temperature and reaction time were evaluated. EPC played a fundamental role in controlling dextran molecular size with 0.1% dextran in reaction mixture. Dextran 38,397 and 125,471Da were yielded at EPC 4.78 and 5.78mg, respectively. Proper dextrans (73,378 and 117,521Da) demanded in pharmaceutical applications were achieved at 6% and 12% sucrose concentrations and at 4.78 and 5.78mg EPC, respectively. Optimum temperature for conversion of glucose to dextran was 30°C (73% and 80% at 5.78 and 4.78mg EPC, respectively). Varieties of maltooligosaccharides (MOS) were yielded by synergistic cooperation between sucrose and maltose. Six MOS and three dextrans samples in vitro have prebiotic effect on Lactobacillus casei with degree of variation. Two samples of MOS with different degree of polymerization (DP) and three samples of dextran with different molecular weight (MW) reported different fibrinolytic activity.
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Barea-Alvarez M, Benito MT, Olano A, Jimeno ML, Moreno FJ. Synthesis and characterization of isomaltulose-derived oligosaccharides produced by transglucosylation reaction of Leuconostoc mesenteroides dextransucrase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9137-9144. [PMID: 25175804 DOI: 10.1021/jf5033735] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This paper reports the efficient enzymatic synthesis of a homologous series of isomaltulose-derived oligosaccharides with degrees of polymerization ranging from 3 to 9 through the transglucosylation reaction using a dextransucrase from Leuconostoc mesenteroides B-512F. The total oligosaccharide yield obtained under optimal conditions was 41-42% (in weight with respect to the initial amount of isomaltulose) after 24-48 h of reaction. Nuclear magnetic resonance (NMR) structural characterization indicated that dextransucrase specifically transferred glucose moieties of sucrose to the C-6 of the nonreducing glucose residue of isomaltulose. Likewise, monitoring the progression of the content of each individual oligosaccharide indicated that oligosaccharide acceptor products of low molecular weight acted in turn as acceptors for further transglucosylation to yield oligosaccharides of a higher degree of polymerization. The produced isomaltulose-derived oligosaccharides can be considered as isomalto-oligosaccharides (IMOs) because they are linked by only α-(1→6) bonds. In addition, having isomaltulose as the core structure, these IMO-like structures could possess appealing bioactive properties that could find potential applications as functional food ingredients.
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Affiliation(s)
- Montserrat Barea-Alvarez
- Departamento Bioactividad y Análisis de Alimentos, Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM), CEI (UAM+CSIC) , c/Nicolás Cabrera 9, 28049 Madrid, Spain
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Côté GL, Cormier RS, Vermillion KE. Glucansucrase acceptor reactions with d-mannose. Carbohydr Res 2014; 387:1-3. [PMID: 24513699 DOI: 10.1016/j.carres.2014.01.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 01/10/2014] [Accepted: 01/13/2014] [Indexed: 10/25/2022]
Abstract
The main acceptor product of glucansucrases with d-mannose has not previously been identified. We used glucansucrases that form water-insoluble α-d-glucans to produce increased yields of acceptor products from d-mannose, and identified the major product as 6-O-α-d-glucopyranosyl-d-mannose. Glucansucrases that synthesize insoluble α-d-glucans produced higher yields of the disaccharide compared to typical dextransucrases.
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Affiliation(s)
- Gregory L Côté
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., Peoria, IL 61604, USA.
| | - Ryan S Cormier
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., Peoria, IL 61604, USA
| | - Karl E Vermillion
- Crop Bioprotection 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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Zannini E, Mauch A, Galle S, Gänzle M, Coffey A, Arendt EK, Taylor JP, Waters DM. Barley malt wort fermentation by exopolysaccharide-forming Weissella cibaria MG1 for the production of a novel beverage. J Appl Microbiol 2013; 115:1379-87. [PMID: 23957391 DOI: 10.1111/jam.12329] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 07/03/2013] [Accepted: 08/13/2013] [Indexed: 11/30/2022]
Abstract
AIMS The growing interest of governments and industry in developing healthy and natural alternative foods and beverages that will fulfil the consumer drive towards a healthy lifestyle and clean-label, natural diet has led to an increase in traditional lactic acid bacteria fermentation research. In particular, this research aims to address the organoleptic modulation of beverages using in situ-produced bacterial polysaccharides. METHODS AND RESULTS Weissella cibaria MG1 is capable of producing exopolysaccharides (dextran) and oligosaccharides (glucooligosaccharides) during sucrose-supplemented barley-malt-derived wort fermentation. Up to 36·4 g l(-1) of dextran was produced in an optimized system, which improved the rheological profile of the resulting fermentate. Additionally, small amounts of organic acids were formed, and ethanol remained below 0·5% (v/v), the threshold volume for a potential health claim designation. CONCLUSIONS The results suggest that the cereal fermentate produced by W. cibaria MG1 could be potentially used for the production of a range of novel, nutritious and functional beverages. SIGNIFICANCE AND IMPACT OF THE STUDY Using conventional raw materials and traditional processes, novel LAB-fermented beverages can be produced representing an innovative mechanism towards fulfilling the aim to decrease government and personal costs as well as potentially ameliorating consumer lifestyle regarding dietary-related disease.
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Affiliation(s)
- E Zannini
- Department of Food Science, Food Technology and Nutrition, National University of Ireland, Cork, Ireland; National Food Biotechnology Centre, National University of Ireland, Cork, Ireland
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Brison Y, Laguerre S, Lefoulon F, Morel S, Monties N, Potocki-Véronèse G, Monsan P, Remaud-Simeon M. Branching pattern of gluco-oligosaccharides and 1.5kDa dextran grafted by the α-1,2 branching sucrase GBD-CD2. Carbohydr Polym 2013; 94:567-76. [DOI: 10.1016/j.carbpol.2013.01.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/20/2013] [Accepted: 01/21/2013] [Indexed: 12/01/2022]
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Böker M, Jördening HJ, Buchholz K. Kinetics of leucrose formation from sucrose by dextransucrase. Biotechnol Bioeng 2012; 43:856-64. [PMID: 18615878 DOI: 10.1002/bit.260430904] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Leucrose formation from sucrose and fructose by dextransucrase is of practical interest. It has been investigated at different experimental conditions, including the influence of temperature on reaction rate and selectivity. Under appropriate conditions high product yield can be obtained. Furthermore, a model is presented that allows interpretation of the experimental data.
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Affiliation(s)
- M Böker
- Sugar Institute, Institut für Technologie der Kohlenhydrate at the Technical University of Braunschweig, Langer Kamp 5, D-38106 Braunschweig, Germany
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12
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Goffin D, Delzenne N, Blecker C, Hanon E, Deroanne C, Paquot M. Will isomalto-oligosaccharides, a well-established functional food in Asia, break through the European and American market? The status of knowledge on these prebiotics. Crit Rev Food Sci Nutr 2011; 51:394-409. [PMID: 21491266 DOI: 10.1080/10408391003628955] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This critical review article presents the current state of knowledge on isomalto-oligosaccharides, some well known functional oligosaccharides in Asia, to evaluate their potential as emergent prebiotics in the American and European functional food market. It includes first a unique inventory of the different families of compounds which have been considered as IMOs and their specific structure. A description has been given of the different production methods including the involved enzymes and their specific activities, the substrates, and the types of IMOs produced. Considering the structural complexity of IMO products, specific characterization methods are described, as well as purification methods which enable the body to get rid of digestible oligosaccharides. Finally, an extensive review of their techno-functional and nutritional properties enables placing IMOs inside the growing prebiotic market. This review is of particular interest considering that IMO commercialization in America and Europe is a topical subject due to the recent submission by Bioneutra Inc. (Canada) of a novel food file to the UK Food Standards Agency, as well as several patents for IMO production.
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Affiliation(s)
- Dorothee Goffin
- Department of Industrial Biological Chemistry, University of Liege - Gembloux Agro-Bio Tech, Passage des D´eport´es, 2, B-5030 Gembloux, Belgium.
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Falconer DJ, Mukerjea R, Robyt JF. Biosynthesis of dextrans with different molecular weights by selecting the concentration of Leuconostoc mesenteroides B-512FMC dextransucrase, the sucrose concentration, and the temperature. Carbohydr Res 2010; 346:280-4. [PMID: 21134671 DOI: 10.1016/j.carres.2010.10.024] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Revised: 10/25/2010] [Accepted: 10/27/2010] [Indexed: 11/25/2022]
Abstract
Leuconostoc mesenteroides B-512FMC dextransucrase was found to synthesize dextrans of varying molecular weights by selecting the concentrations of dextransucrase and sucrose, as well as the temperature. Four enzyme concentrations (50, 10, 1.0, and 0.1U/mL), five sucrose concentrations (20, 50, 100, 200 and 1000mM), and two temperatures (20°C and 30°C) were studied. The highest amount of enzyme (50U/mL), with the lowest concentration of sucrose (20mM), and the lower temperature of 20°C gave the lowest number-average molecular weight (MW(n)) of 20,630Da, respectively. As the sucrose concentration was increased, 50mM, 100mM, and 200mM, the MW(n) was 49,240Da, 63,350Da, and 126,720Da, respectively. The next enzyme concentration (10U/mL) gave a similar upward trend, starting at 73,130Da and ending at 237,870Da at 20°C and 130,040Da and ending at 415,770Da at 30°C. The upward trend continued for the 1.0 and 0.1U/mL enzyme concentrations. An increase in the temperature had the overall effect of increasing the MW(n) for each decreasing concentration of enzyme and increasing concentration of sucrose. For 0.1U/mL and 1000mM sucrose at 30°C, the MW(n) was 1,645,700Da. The results of the study show that the molecular weights of the synthesized dextrans were inversely proportional to the concentration of the enzyme and directly proportional to the concentration of sucrose and the temperature.
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Affiliation(s)
- Daniel J Falconer
- Laboratory of Carbohydrate Chemistry and Enzymology, Department of Biochemistry, Biophysics, and Molecular Biology, 4252 Molecular Biology Building, Iowa State University, Ames, Iowa 50011, USA
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Moulis C, Vaca Medina G, Suwannarangsee S, Monsan P, Remaud-Simeon M, Potocki-Veronese G. One-step synthesis of isomalto-oligosaccharide syrups and dextrans of controlled size using engineered dextransucrase. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420701799493] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Côté GL, Dunlap CA, Vermillion KE. Glucosylation of raffinose via alternansucrase acceptor reactions. Carbohydr Res 2009; 344:1951-9. [PMID: 19596226 DOI: 10.1016/j.carres.2009.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Revised: 06/02/2009] [Accepted: 06/22/2009] [Indexed: 10/20/2022]
Abstract
The glucansucrase known as alternansucrase [EC 2.4.1.140] can transfer glucosyl units from sucrose to raffinose to give good yields of oligosaccharides, which may serve as prebiotics. The main products were the tetrasaccharides alpha-d-Glcp-(1-->3)-alpha-d-Galp-(1-->6)-alpha-d-Glcp-(1<-->2)-beta-d-Fruf and alpha-d-Glcp-(1-->4)-alpha-d-Galp-(1-->6)-alpha-d-Glcp-(1<-->2)-beta-d-Fruf in ratios ranging from 4:1 to 9:1, along with lesser amounts of alpha-d-Glcp-(1-->6)-alpha-d-Galp-(1-->6)-alpha-d-Glcp-(1<-->2)-beta-d-Fruf. Ten unusual pentasaccharide structures were isolated. Three of these arose from glucosylation of the major tetrasaccharide product, two each from the minor tetrasaccharides, and three were the result of glucosylations of the fructose acceptor product leucrose or isomaltulose. The major pentasaccharide product arose from glucosylation of the major tetrasaccharide at position 4 of the fructofuranosyl unit, to give a subunit structure analogous to that of maltulose. A number of hexasaccharides and higher oligosaccharides were also produced. Unlike alternansucrase, dextransucrase [EC 2.4.1.5] gave only a single tetrasaccharide product in low yield, and no significant amounts of higher oligosaccharides. The tetrasaccharide structure from dextransucrase was found to be alpha-d-Glcp-(1-->4)-alpha-d-Galp-(1-->6)-alpha-d-Glcp-(1<-->2)-beta-d-Fruf, which is at odds with the previously published structure.
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Affiliation(s)
- Gregory L Côté
- National Center for Agricultural Utilization Research, United States Department of Agriculture, Peoria, IL 61604, USA.
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RABELO M, HONORATO T, GONÇALVES L, PINTO G, RODRIGUES S. OPTIMIZATION OF ENZYMATIC SYNTHESIS OF ISOMALTO-OLIGOSACCHARIDES PRODUCTION. J Food Biochem 2009. [DOI: 10.1111/j.1745-4514.2009.00222.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Erhardt FA, Kügler J, Chakravarthula RR, Jördening HJ. Co-immobilization of dextransucrase and dextranase for the facilitated synthesis of isomalto-oligosaccharides: Preparation, characterization and modeling. Biotechnol Bioeng 2008; 100:673-83. [DOI: 10.1002/bit.21810] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Remaud M, Paul F, Monsan P, Heyraud A, Rinaudo M. Molecular Weight Characterization and Structural Properties of Controlled Molecular Weight Dextrans Synthesized by Acceptor Reaction using Highly Purified Dextransucrase. J Carbohydr Chem 2008. [DOI: 10.1080/07328309108543955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Remaud M, Paul F, Monsan P, Lopez-Munguia A, Vignon M. Characterization of α-(1→3) Branched Oligosaccharides Synthesized by Acceptor Reaction with the Extracellular Glucosyltransferases fromL. MesenteroidesNRRL B-742. J Carbohydr Chem 2006. [DOI: 10.1080/07328309208017999] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Remaud
- a Bioeurope , BP 4196, 4 impasse Didier-Daurat, 31031, Toulouse, cedex, France
| | - F. Paul
- a Bioeurope , BP 4196, 4 impasse Didier-Daurat, 31031, Toulouse, cedex, France
| | - P. Monsan
- a Bioeurope , BP 4196, 4 impasse Didier-Daurat, 31031, Toulouse, cedex, France
| | - A. Lopez-Munguia
- b Centro de Investigation sobre Ingenieria Genética y Biotecnologia , UNAM. Apartado Postal 510-3; Cuernavaca, Morelos, 62271, México
| | - M. Vignon
- c CERMAV-CNRS , BP, 53X 38041, Grenoble, cedex, France
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Rodrigues S, Lona LM, Franco TT. Optimizing panose production by modeling and simulation using factorial design and surface response analysis. J FOOD ENG 2006. [DOI: 10.1016/j.jfoodeng.2005.04.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Rodrigues S, Lona LMF, Franco TT. The effect of maltose on dextran yield and molecular weight distribution. Bioprocess Biosyst Eng 2005; 28:9-14. [PMID: 16163491 DOI: 10.1007/s00449-005-0002-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2004] [Accepted: 04/29/2005] [Indexed: 10/25/2022]
Abstract
Dextran synthesis has been studied since the Second World War, when it was used as blood plasma expander. This polysaccharide composed of glucose units is linked by an alpha-1,6-glucosidic bond. Dextransucrase is a bacterial extra cellular enzyme, which promotes the dextran synthesis from sucrose. When, besides sucrose, another substrate (acceptor) is also present in the reactor, oligosaccharides are produced and part of the glucosyl moieties from glucose is consumed to form these acceptor products, decreasing the dextran yield. Although dextran enzymatic synthesis has been extensively studied, there are few published studies regarding its molecular weight distribution. In this work, the effect of maltose on yield and dextran molecular weight synthesized using dextransucrase from Leuconostoc mesenteroides B512F, was investigated. According to the obtained results, maltose is not able to control and reduce dextran molecular weight distribution and synthesis carried out with or without maltose presented the same molecular weight distribution profile.
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Affiliation(s)
- Sueli Rodrigues
- Departamento de Tecnologia de Alimentos, Universidade Federal do Ceará, Caixa Postal 12168, Campus do Pici, Bloco 858, 60021-970, Fortaleza, CE, Brazil.
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Argüello-Morales M, Sánchez-González M, Canedo M, Quirasco M, Farrés A, López-Munguía A. Proteolytic modification of Leuconostoc mesenteroides B-512F dextransucrase. Antonie van Leeuwenhoek 2005; 87:131-41. [PMID: 15723174 DOI: 10.1007/s10482-004-2042-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2004] [Accepted: 08/10/2004] [Indexed: 10/25/2022]
Abstract
Multiple active lower molecular weight forms from Leuconostoc mesenteroides B512F dextransucrase have been reported. It has been suggested that they arise from proteolytic processing of a 170 kDa precursor. In this work, the simultaneous production of proteases and dextransucrase was studied in order to elucidate the dextransucrase proteolytic processing. The effect of the nitrogen source on protease and dextransucrase production was studied. Protease activity reaches a maximum early in the logarithmic phase of dextransucrase synthesis using the basal culture medium but the nitrogen source plays an important effect on growth: the highest protease concentration was obtained when ammonium sulfate, casaminoacids or tryptone were used. Two active forms of 155 and 129 kDa were systematically obtained from dextransucrase precursor by proteolysis. The amino termini of these forms were sequenced and the cleavage site deduced. Both forms of the enzyme obtained had the same cleavage site in the amino terminal region (F209-Y210). From dextransucrase analysis, various putative cleavage sites with the same sequence were found in the variable region and in the glucan binding domain. Although no structural differences were found in dextrans synthesized with both the precursor and the proteolyzed 155 kDa form under the same reaction conditions, their rheological behaviour was modified, with dextran of a lower viscosity yielded by the smaller form.
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Affiliation(s)
- Martha Argüello-Morales
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apdo. Postal 510-3, 62250, Morelos, Cuernavaca, México
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24
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Goulas AK, Fisher DA, Grimble GK, Grandison AS, Rastall RA. Synthesis of isomaltooligosaccharides and oligodextrans by the combined use of dextransucrase and dextranase. Enzyme Microb Technol 2004. [DOI: 10.1016/j.enzmictec.2004.05.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Immobilization of dextransucrase and its use with soluble dextranase for glucooligosaccharides synthesis. Enzyme Microb Technol 2004. [DOI: 10.1016/j.enzmictec.2003.11.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Goulas AK, Cooper JM, Grandison AS, Rastall RA. Synthesis of isomaltooligosaccharides and oligodextrans in a recycle membrane bioreactor by the combined use of dextransucrase and dextranase. Biotechnol Bioeng 2004; 88:778-87. [PMID: 15532062 DOI: 10.1002/bit.20257] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A recycle ultrafiltration membrane reactor was used to develop a continuous synthesis process for the production of isomaltooligosaccharides (IMO) from sucrose, using the enzymes dextransucrase and dextranase. A variety of membranes were tested and the parameters affecting reactor stability, productivity, and product molecular weight distribution were investigated. Enzyme inactivation in the reactor was reduced with the use of a non-ionic surfactant but its use had severe adverse effects on the membrane pore size and porosity. During continuous isomaltooligosaccharide synthesis, dextransucrase inactivation was shown to occur as a result of the dextranase activity and it was dependent mainly on the substrate availability in the reactor and the hydrolytic activity of dextranase. Substrate and dextranase concentrations (50-200 mg/mL(-1) and 10-30 U/mL(-1), respectively) affected permeate fluxes, reactor productivity, and product average molecular weight. The oligodextrans and isomaltooligosaccharides formed had molecular weights lower than in batch synthesis reactions but they largely consisted of oligosaccharides with a degree of polymerization (DP) greater than 5, depending on the synthesis conditions. No significant rejection of the sugars formed was shown by the membranes and permeate flux was dependent on tangential flow velocity.
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Affiliation(s)
- Athanasios K Goulas
- School of Food Biosciences, The University of Reading, P.O. Box 226, Whiteknights, Reading, RG6 6AP, United Kingdom
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27
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Dols-Lafargue M, Willemot RM, Monsan PF, Remaud-Simeon M. Factors affecting alpha,-1,2 glucooligosaccharide synthesis by Leuconostoc mesenteroides NRRL B-1299 dextransucrase. Biotechnol Bioeng 2001; 74:498-504. [PMID: 11494217 DOI: 10.1002/bit.1141] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The optimization of alpha-1,2 glucooligosaccharide (GOS) synthesis from maltose and sucrose by Leuconostoc mesenteroides NRRL B-1299 dextransucrase was achieved using experimental design and consecutive analysis of the key parameters. An increase of the pH of the reaction from 5.4 to 6.7 and of the temperature from 25 to 40 degrees C significantly favored alpha-1,2 GOS synthesis, thanks to a significant decrease of the side reactions, i.e., dextran and leucrose synthesis. These positive effects were not sufficient to compensate for the decrease of enzyme stability caused by the use of high pH and temperature. However, the critical parameters were the sucrose to maltose concentration ratio (S/M) and the total sugar concentration (TSC). Alpha1,2 GOS synthesis was favored at high S/M ratios. But using these conditions also led to an increase of side reactions which could be modulated by choosing the appropriate TSC. Finally, with S/M = 4 and TSC = 45% w/v, dextran and leucrose productions were limited and the final alpha-1,2 GOS yield reached 56.7%, the total GOS yield being 88%.
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Affiliation(s)
- M Dols-Lafargue
- Laboratoire de Biochimie et Technologie des Aliments, Avenue des Facultés, 33405 Talence Cedex, France
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28
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Argüello Morales MA, Remaud-Simeon M, Willemot RM, Vignon MR, Monsan P. Novel oligosaccharides synthesized from sucrose donor and cellobiose acceptor by alternansucrase. Carbohydr Res 2001; 331:403-11. [PMID: 11398982 DOI: 10.1016/s0008-6215(01)00038-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cellobiose was tested as acceptor in the reaction catalyzed by alternansucrase (EC 2.4.1.140) from Leuconostoc mesenteroides NRRL B-23192. The oligosaccharides synthesized were compared to those obtained with dextransucrase from L. mesenteroides NRRL B-512F. With alternansucrase and dextransucrase, overall oligosaccharide synthesis yield reached 30 and 14%, respectively, showing that alternansucrase is more efficient than dextransucrase for cellobiose glucosylation. Interestingly, alternansucrase produced a series of oligosaccharides from cellobiose. Their structure was determined by mass spectrometry and [13C-1H] NMR spectroscopy. Two trisaccharides are first produced: alpha-D-glucopyranosyl-(1-->2)-[beta-D-glucopyranosyl-(1-->4)]-D-glucopyranose (compound A) and alpha-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl-(1-->4)-D-glucopyranose (compound B). Then, compound B can in turn be glucosylated leading to the synthesis of a tetrasaccharide with an additional alpha-(1-->6) linkage at the non-reducing end (compound D). The presence of the alpha-(1-->3) linkage occurred only in the pentasaccharides (compounds C1 and C2) formed from tetrasaccharide D. Compounds B, C1, C2 and D were never described before. They were produced efficiently only by alternansucrase. Their presence emphasizes the difference existing in the acceptor reaction selectivity of the various glucansucrases.
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Affiliation(s)
- M A Argüello Morales
- Department de Génie Biochimique et Alimentaire, Centre de Bioingénierie, Gilbert Durand, UMR CNRS 5504, UMR INRA 792, INSA, Toulouse, France
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29
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30
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Enzymatic isomaltooligosaccharides production. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0921-0423(00)80062-3] [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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31
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Quirasco M, López-Munguía A, Remaud-Simeon M, Monsan P, Farrés A. Induction and transcription studies of the dextransucrase gene in Leuconostoc mesenteroides NRRL B-512F. Appl Environ Microbiol 1999; 65:5504-9. [PMID: 10584010 PMCID: PMC91750 DOI: 10.1128/aem.65.12.5504-5509.1999] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/1999] [Accepted: 09/08/1999] [Indexed: 11/20/2022] Open
Abstract
Dextransucrase production by Leuconostoc mesenteroides NRRL B-512F in media containing carbon sources other than sucrose is reported for the first time. Dextransucrases were analyzed by gel electrophoresis and by an in situ activity assay. Their polymers and acceptor reaction products were also compared by (13)C nuclear magnetic resonance and high-performance liquid chromatography techniques, respectively. From these analyses, it was found that, independently of the carbon source, L. mesenteroides NRRL B-512F produced dextransucrases of the same size and product specificity. The 5' ends of dextransucrase mRNAs isolated from cells grown under different culture conditions were identical. Based on this evidence, we conclude that dextransucrases obtained from cells grown on the various carbon sources result from the transcription of the same gene. The control of expression occurs at this level. The low dextransucrase yields from cultures in D-glucose or D-fructose and the enhancement of dextransucrase gene transcription in the presence of sucrose suggest that an activating phenomenon may be involved in the expression mechanism. Dextransucrase mRNA has a size of approximately 4.8 kb, indicating that the gene is located in a monocistronic operon. The transcription start point was localized 34 bp upstream from the ATG start codon. The -10 and -35 sequences found, TATAAT and TTTACA, were highly homologous to the only glycosyltransferase promoter sequence reported for lactic acid bacteria.
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Affiliation(s)
- M Quirasco
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510 Federal District, Mexico
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32
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Kitaoka M, Robyt JF. Mechanism of the action of Leuconostoc mesenteroides B-512FMC dextransucrase: kinetics of the transfer of d-glucose to maltose and the effects of enzyme and substrate concentrations. Carbohydr Res 1999. [DOI: 10.1016/s0008-6215(99)00155-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Kinetics of the dextransucrase acceptor reaction with maltose—experimental results and modeling. Enzyme Microb Technol 1999. [DOI: 10.1016/s0141-0229(98)00150-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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34
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Dols M, Remaud-Simeon M, Willemot RM, Demuth B, Jordening HJ, Buchholz K, Monsan P. Kinetic modeling of oligosaccharide synthesis catalyzed by leuconostoc mesenteroides NRRL B-1299 dextransucrase. Biotechnol Bioeng 1999; 63:308-15. [PMID: 10099610 DOI: 10.1002/(sici)1097-0290(19990505)63:3<308::aid-bit7>3.0.co;2-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The kinetic behavior of soluble and insoluble forms of dextransucrase from Leuconostoc mesenteroides NRRL B-1299 was investigated with sucrose as substrate and maltose as acceptor. To study the parameters involved, a kinetic model was applied that was previously developed for L. mesenteroides NRRL B-512F dextransucrase. There are significant correlations between the parameters of the soluble form of B-1299 dextransucrase and those calculated for the B-512F enzyme; that is, their properties are comparable and differ from those of the insoluble form of B-1299 dextransucrase. Whereas the calculated parameters for high maltose concentrations describe the kinetic behavior very well, the time curves for low maltose concentrations were not described correctly. Therefore, the parameters were calculated separately for the two ranges. Copyright 1999 John Wiley & Sons, Inc.
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Affiliation(s)
- M Dols
- Laboratoire de Biotechnologie-Bioprocedes, UMR 5504 INSA/CNRS and Laboratoire Associe INRA, INSA, Complexe scientifique de Rangueil, 31 077 Toulouse cedex 4, France
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35
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Monchois V, Reverte A, Remaud-Simeon M, Monsan P, Willemot RM. Effect of Leuconostoc mesenteroides NRRL B-512F dextransucrase carboxy-terminal deletions on dextran and oligosaccharide synthesis. Appl Environ Microbiol 1998; 64:1644-9. [PMID: 9572930 PMCID: PMC106209 DOI: 10.1128/aem.64.5.1644-1649.1998] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Dextransucrase (DSR-S) from Leuconostoc mesenteroides NRRL B-512F is a glucosyltransferase that catalyzes synthesis of soluble dextran from sucrose. In the presence of efficient acceptor molecules, such as maltose, the reaction pathway is shifted toward glucooligosaccharide synthesis. Like glucosyltransferases from oral streptococci, DSR-S possesses a C-terminal glucan-binding domain composed of a series of tandem repeats. In order to determine the role of the C-terminal region of DSR-S in dextran or oligosaccharide synthesis, four DSR-S genes with deletions at the 3' end were constructed. The results showed that the C-terminal region modulated the initial velocity of dextran synthesis but that the K(m) for sucrose, the optimum pH, and the activation energy were all unaffected by the deletions. The C-terminal domain modulated the rate of oligosaccharide synthesis whatever acceptor molecule was used (a good acceptor molecule such as maltose or a poor acceptor molecule such as fructose). The C-terminal domain seemed to play no role in the catalytic process in dextran and oligosaccharide synthesis. In fact, it seems that the role of the C-terminal domain of DSR-S may be to facilitate the translation of dextran and oligosaccharides from the catalytic site.
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Affiliation(s)
- V Monchois
- Centre de Bioingénierie Gilbert Durand, UMR CNRS 5504, LA INRA, INSA, Complexe Scientifique de Rangueil, Toulouse, France
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36
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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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37
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Characterization of dextransucrases fromLeuconostoc mesenteroides NRRL B-1299. Appl Biochem Biotechnol 1997. [DOI: 10.1007/bf02787983] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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39
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Properties and uses of dextransucrases elaborated by a new class of Leuconostoc mesenteroides mutants. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s0921-0423(96)80365-0] [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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40
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Vic G, Biton J, Le Beller D, Michel JM, Thomas D. Enzymatic glucosylation of hydrophobic alcohols in organic medium by the reverse hydrolysis reaction using almond-?-D-glucosidase. Biotechnol Bioeng 1995; 46:109-16. [DOI: 10.1002/bit.260460204] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Quirasco M, Lopez-Munguia A, Pelenc V, Remaud M, Paul F, Monsan P. Enzymatic production of glucooligosaccharides containing alpha-(1-->2) osidic bonds. Potential application in nutrition. Ann N Y Acad Sci 1995; 750:317-20. [PMID: 7785858 DOI: 10.1111/j.1749-6632.1995.tb19972.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- M Quirasco
- Instituto de Biotechologia UNAM, Cuernavaca, Mexico
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42
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43
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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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44
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Robyt JF. Mechanisms in the glucansucrase synthesis of polysaccharides and oligosaccharides from sucrose. Adv Carbohydr Chem Biochem 1995; 51:133-68. [PMID: 7484361 DOI: 10.1016/s0065-2318(08)60193-6] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- J F Robyt
- Department of Biochemistry and Biophysics, Iowa State University, Ames,USA
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45
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Kim D, Day DF. A new process for the production of clinical dextran by mixed-culture fermentation of Lipomyces starkeyi and Leuconostoc mesenteroides. Enzyme Microb Technol 1994; 16:844-8. [PMID: 7521648 DOI: 10.1016/0141-0229(94)90058-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A mixed-culture fermentation system was designed for the production of size-limited dextrans. This process was simpler and more economical than traditional methods. It required the establishment of microbial consortia of Lipomyces starkeyi ATCC 74054 and Leuconostoc mesenteroides ATCC 10830. Controlling initial conditions, growth, and enzyme production by both organisms controlled the product size. In this process, both strains were grown separately and then mixed. Dextran fermentation was then allowed to proceed. At the desired time (and molecular size), the fermentation was harvested. The optimum pH and temperature for production of clinical dextran (75,000 MW) were 5.2 (+/- 0.1) and 28 (+/- 0.5) degrees C, respectively. Varying the ratio of L. mesenteroides to L. starkeyi in the inoculum did not significantly affect either the final cell ratios or dextran production.
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Affiliation(s)
- D Kim
- Department of Microbiology, Louisiana State University, Baton Rouge
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46
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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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47
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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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48
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Lee S, Choi S, Kim E, Koo Y. Continuous production of clinical dextran using two-stage reactor. Biotechnol Lett 1992. [DOI: 10.1007/bf01021251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Gasciolli V, Choplin L, Paul F, Monsan P. Viscous properties and molecular characterization of enzymatically size-controlled oligodextrans in aqueous solutions. J Biotechnol 1991. [DOI: 10.1016/0168-1656(91)90058-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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