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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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Shi Q, Hou Y, Juvonen M, Tuomainen P, Kajala I, Shukla S, Goyal A, Maaheimo H, Katina K, Tenkanen M. Optimization of Isomaltooligosaccharide Size Distribution by Acceptor Reaction of Weissella confusa Dextransucrase and Characterization of Novel α-(1→2)-Branched Isomaltooligosaccharides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3276-3286. [PMID: 27050481 DOI: 10.1021/acs.jafc.6b01356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Long-chain isomaltooligosaccharides (IMOs) are promising prebiotics. IMOs were produced by a Weissella confusa dextransucrase via maltose acceptor reaction. The inputs of substrates (i.e., sucrose and maltose, 0.15-1 M) and dextransucrase (1-10 U/g sucrose) were used to control IMO yield and profile. According to response surface modeling, 1 M sucrose and 0.5 M maltose were optimal for the synthesis of longer IMOs, whereas the dextransucrase dosage showed no significant effect. In addition to the principal linear IMOs, a homologous series of minor IMOs were also produced from maltose. As identified by MS(n) and NMR spectroscopy, the minor trisaccharide contained an α-(1→2)-linked glucosyl residue on the reducing residue of maltose and thus was α-d-glucopyranosyl-(1→2)-[α-d-glucopyranosyl-(1→4)]-d-glucopyranose (centose). The higher members of the series were probably formed by the attachment of a single unit branch to linear IMOs. This is the first report of such α-(1→2)-branched IMOs produced from maltose by a dextransucrase.
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Affiliation(s)
- Qiao Shi
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
| | - Yaxi Hou
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
| | - Minna Juvonen
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
| | - Päivi Tuomainen
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
| | - Ilkka Kajala
- VTT Technical Research Centre of Finland Ltd. , P.O. Box 1000, FI-02044 VTT, Finland
| | - Shraddha Shukla
- Department of Biotechnology, Indian Institute of Technology Guwahati , Guwahati 781 039, Assam, India
| | - Arun Goyal
- Department of Biotechnology, Indian Institute of Technology Guwahati , Guwahati 781 039, Assam, India
| | - Hannu Maaheimo
- VTT Technical Research Centre of Finland Ltd. , P.O. Box 1000, FI-02044 VTT, Finland
| | - Kati Katina
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
| | - Maija Tenkanen
- Department of Food and Environmental Sciences, University of Helsinki , P.O. Box 27, FI-00014 University of Helsinki, Finland
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Lactose- and cellobiose-derived branched trisaccharides and a sucrose-containing trisaccharide produced by acceptor reactions of Weissella confusa dextransucrase. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.05.090] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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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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Enzymatic synthesis and characterization of fructooligosaccharides and novel maltosylfructosides by inulosucrase from Lactobacillus gasseri DSM 20604. Appl Environ Microbiol 2013; 79:4129-40. [PMID: 23645191 DOI: 10.1128/aem.00854-13] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The ability of an inulosucrase (IS) from Lactobacillus gasseri DSM 20604 to synthesize fructooligosaccharides (FOS) and maltosylfructosides (MFOS) in the presence of sucrose and sucrose-maltose mixtures was investigated after optimization of synthesis conditions, including enzyme concentration, temperature, pH, and reaction time. The maximum formation of FOS, which consist of β-2,1-linked fructose to sucrose, was 45% (in weight with respect to the initial amount of sucrose) and was obtained after 24 h of reaction at 55°C in the presence of sucrose (300 g liter(-1)) and 1.6 U ml(-1) of IS-25 mM sodium acetate buffer-1 mM CaCl2 (pH 5.2). The production of MFOS was also studied as a function of the initial ratios of sucrose to maltose (10:50, 20:40, 30:30, and 40:20, expressed in g 100 ml(-1)). The highest yield in total MFOS was attained after 24 to 32 h of reaction time and ranged from 13% (10:50 sucrose/maltose) to 52% (30:30 sucrose/maltose) in weight with respect to the initial amount of maltose. Nuclear magnetic resonance (NMR) structural characterization indicated that IS from L. gasseri specifically transferred fructose moieties of sucrose to either C-1 of the reducing end or C-6 of the nonreducing end of maltose. Thus, the trisaccharide erlose [α-d-glucopyranosyl-(1→4)-α-d-glucopyranosyl-(1→2)-β-d-fructofuranoside] was the main synthesized MFOS followed by neo-erlose [β-d-fructofuranosyl-(2→6)-α-d-glucopyranosyl-(1→4)-α-d-glucopyranose]. The formation of MFOS with a higher degree of polymerization was also demonstrated by the transfer of additional fructose residues to C-1 of either the β-2,1-linked fructose or the β-2,6-linked fructose to maltose, revealing the capacity of MFOS to serve as acceptors.
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Kang HK, Kimura A, Kim D. Bioengineering of Leuconostoc mesenteroides glucansucrases that gives selected bond formation for glucan synthesis and/or acceptor-product synthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:4148-4155. [PMID: 21391600 DOI: 10.1021/jf104629g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The variations in glucosidic linkage specificity observed in products of different glucansucrases appear to be based on relatively small differences in amino acid sequences in their sugar-binding acceptor subsites. Various amino acid mutations near active sites of DSRBCB4 dextransucrase from Leuconostoc mesenteroides B-1299CB4 were constructed. A triple amino acid mutation (S642N/E643N/V644S) immediately next to the catalytic D641 (putative transition state stabilizing residue) converted DSRBCB4 enzyme from the synthesis of mainly α-(1→6) dextran to the synthesis of α-(1→6) glucan containing branches of α-(1→3) and α-(1→4) glucosidic linkages. The subsequent introduction of mutation V532P/V535I, located next to the catalytic D530 (nucleophile), resulted in the synthesis of an α-glucan containing increased branched α-(1→4) glucosidic linkages (approximately 11%). The results indicate that mutagenesis can guide glucansucrase toward the synthesis of various oligosaccharides or novel polysaccharides with completely altered linkages without compromising high transglycosylation activity and efficiency.
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Affiliation(s)
- Hee Kyoung Kang
- Research Institute for Catalysis and School of Biological Sciences and Technology, Chonnam National University, Gwang-Ju, Korea
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Kim M, Day DF, Kim D. Potential physiological functions of acceptor products of dextransucrase with cellobiose as an inhibitor of mutansucrase and fungal cell synthase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:11493-11500. [PMID: 20929235 DOI: 10.1021/jf103140f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A series of oligosaccharides (cellobio-oligosaccharides) ranging from degrees of polymer 3 to 6 were synthesized by Leuconostoc mesenteroides B-512 FMCM in the presence of cellobiose. The major oligosaccharides were the trisaccharides, α-D-glucopyranosyl-(1 → 2)-β-D-glucopyranosyl-(1 → 4)-D-glucopyranose and α-D-glucopyranosyl-(1 → 6)-β-D-glucopyranosyl-(1 → 4)-D-glucopyranose. These cellobio-oligosaccharides were inhibitory on mutansucrase, an enzyme that causes dental caries. They were also found to be effective antifungal agents against Aspergillus terreus acting by inhibiting β-(1 → 3)-glucan synthase, which is required for fungal cell wall formation.
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Affiliation(s)
- Misook Kim
- Audubon Sugar Institute, Louisiana State University Agricultural Center, 3845 Highway 75, Saint Gabriel, Louisiana 70776, United States
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9
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Lacaze G, Wick M, Cappelle S. Emerging fermentation technologies: Development of novel sourdoughs. Food Microbiol 2007; 24:155-60. [PMID: 17008159 DOI: 10.1016/j.fm.2006.07.015] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The increasing knowledge of sourdough fermentation generates new opportunities for its use in the bakery field. New fermentation technologies emerged through in depth sourdough research. Dextrans are extracellular bacterial polysaccharides produced mainly by lactic acid bacteria (LAB). These bacteria convert sucrose thanks to an inducible enzyme called dextransucrase into dextran and fructose. The structure of dextran depends on the producing micro-organism and on culture conditions. Depending on its structure, dextran has specific properties which lead to several industrial applications in different domains. The use of dextran is not widely spread in the bakery field even if its impact on bread volume and texture was shown. A new process has been developed to obtain a sourdough rich in dextran using a specific LAB strain able to produce a sufficient amount of HMW dextran assuring a significant impact on bread volume. The sourdough obtained permits to improve freshness, crumb structure, mouthfeel and softness of all kinds of baked good from wheat rich dough products to rye sourdough breads. From fundamental research on dextran technology, a new fermentation process has been developed to produce an innovative functional ingredient for bakery industry.
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Affiliation(s)
- G Lacaze
- Puratos Group, BU Bioflavors, Industrialaan, 25, 1702 Groot-bijgaarden, Belgium
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10
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Nazarian Firouzabadi F, Kok-Jacon GA, Vincken JP, Ji Q, Suurs LCJM, Visser RGF. Fusion proteins comprising the catalytic domain of mutansucrase and a starch-binding domain can alter the morphology of amylose-free potato starch granules during biosynthesis. Transgenic Res 2006; 16:645-56. [PMID: 17160452 DOI: 10.1007/s11248-006-9053-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2006] [Accepted: 11/01/2006] [Indexed: 11/28/2022]
Abstract
It has been shown previously that mutan can be co-synthesized with starch when a truncated mutansucrase (GtfICAT) is directed to potato tuber amyloplasts. The mutan seemed to adhere to the isolated starch granules, but it was not incorporated in the starch granules. In this study, GtfICAT was fused to the N- or C-terminus of a starch-binding domain (SBD). These constructs were introduced into two genetically different potato backgrounds (cv. Kardal and amf), in order to bring GtfICAT in more intimate contact with growing starch granules, and to facilitate the incorporation of mutan polymers in starch. Fusion proteins of the appropriate size were evidenced in starch granules, particularly in the amf background. The starches from the various GtfICAT/SBD transformants seemed to contain less mutan than those from transformants with GtfICAT alone, suggesting that the appended SBD might inhibit the activity of GtfICAT in the engineered fusion proteins. Scanning electron microscopy showed that expression of SBD-GtfICAT resulted in alterations of granule morphology in both genetic backgrounds. Surprisingly, the amf starches containing SBD-GtfICAT had a spongeous appearance, i.e., the granule surface contained many small holes and grooves, suggesting that this fusion protein can interfere with the lateral interactions of amylopectin sidechains. No differences in physico-chemical properties of the transgenic starches were observed. Our results show that expression of granule-bound and "soluble" GtfICAT can affect starch biosynthesis differently.
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Affiliation(s)
- Farhad Nazarian Firouzabadi
- Graduate School Experimental Plant Sciences, Laboratory of Plant Breeding, Wageningen University, 386, 6700 AJ Wageningen, The Netherlands
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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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Seo ES, Lee JH, Park JY, Kim D, Han HJ, Robyt JF. Enzymatic synthesis and anti-coagulant effect of salicin analogs by using the Leuconostoc mesenteroides glucansucrase acceptor reaction. J Biotechnol 2005; 117:31-8. [PMID: 15831245 DOI: 10.1016/j.jbiotec.2004.10.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2003] [Revised: 10/15/2004] [Accepted: 10/25/2004] [Indexed: 11/25/2022]
Abstract
Glucansucrases from Leuconostoc mesenteroides catalyze the transfer of glucosyl units from sucrose to other carbohydrates by acceptor reaction. We modified salicyl alcohol, phenol and salicin by using various glucansucrases and with sucrose as a donor of glucosyl residues. Salicin, phenyl glucose, isosalicin, isomaltosyl salicyl alcohol, and a homologous series of oligosaccharides, connected to the acceptors and differing from one another by one or more glucose residues, were produced as major reaction products. By using salicin and salicyl alcohol as acceptors, B-1355C2 and B-1299CB-BF563 dextransucrases synthesized most widely diverse products, producing more than 12 and 9 different kinds of saccharides, respectively. With phenol, two acceptor products and oligosaccharides were synthesized by using the B-1299CB-BF563 dextransucrase. Salicyl derivatives, as acceptor products, showed higher anti-coagulation activity compared with that of salicin or salicyl alcohol that were used as acceptors.
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Affiliation(s)
- Eun-Seong Seo
- Department of Material Chemical and Biochemical Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
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Kim YK, Kitaoka M, Hayashi K, Kim CH, Côté GL. Purification and characterization of an intracellular cycloalternan-degrading enzyme from Bacillus sp. NRRL B-21195. Carbohydr Res 2004; 339:1179-84. [PMID: 15063208 DOI: 10.1016/j.carres.2004.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2003] [Accepted: 02/01/2004] [Indexed: 10/26/2022]
Abstract
A novel intracellular cycloalternan-degrading enzyme (CADE) was purified to homogeneity from the cell pellet of Bacillus sp. NRRL B-21195. The enzyme has a molecular mass of 125 kDa on SDS-PAGE. The pH optimum was 7.0, and the enzyme was stable from pH 6.0 to 9.2. The temperature optimum was 35 degrees C and the enzyme exhibited stability up to 50 degrees C. The enzyme hydrolyzed cycloalternan [CA; cyclo(-->6)-alpha-d-Glcp-(1-->3)-alpha-d-Glcp-(1-->6)-alpha-d-Glcp-(-->3)-alpha-d-Glcp-(1-->)] as the best substrate, to produce only isomaltose via an intermediate, alpha-isomaltosyl-(1-->3)-isomaltose. This enzyme also hydrolyzed isomaltosyl substrates, such as panose, alpha-isomaltosyl-(1-->4)-maltooligosaccharides, alpha-isomaltosyl-(1-->3)-glucose, and alpha-isomaltosyl-(1-->3)-isomaltose to liberate isomaltose. Neither maltooligosaccharides nor isomaltooligosaccharides were hydrolyzed by the enzyme, indicating that CADE requires alpha-isomaltosyl residues connected with (1-->4)- or (1-->3)-linkages. The K(m) value of cycloalternan (1.68 mM) was 20% of that of panose (8.23 mM). The k(cat) value on panose (14.4s(-1)) was not significantly different from that of cycloalternan (10.8 s(-1)). Judging from its specificity, the systematic name of the enzyme should be cycloalternan isomaltosylhydrolase. This intracellular enzyme is apparently involved in the metabolism of starch via cycloalternan in Bacillus sp. NRRL B-21195, its role being to hydrolyze cycloalternan inside the cells.
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Affiliation(s)
- Yeon-Kye Kim
- Enzyme Laboratory, National Food Research Institute, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
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Kok-Jacon GA, Ji Q, Vincken JP, Visser RGF. Towards a more versatile alpha-glucan biosynthesis in plants. JOURNAL OF PLANT PHYSIOLOGY 2003; 160:765-777. [PMID: 12940545 DOI: 10.1078/0176-1617-01028] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Starch is an important storage polysaccharide in many plants. It is composed of densely packed alpha-glucans, consisting of 1,4- and 1,4,6-linked glucose residues. The starch polymers are used in many industrial applications. The biosynthetic machinery for assembling the granule has been manipulated in many different ways to gain insight into the process of starch biosynthesis and to engineer starches with improved functionalities. With respect to the latter, two generic technologies with great potential have been developed: (i) introduction of new linkage types in starch polymers (1,3- and 1,6-linkages), and (ii) engineering granule-boundness. The toolbox to engineer this new generation of starch polymers is discussed.
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Yoon SH, Robyt JF. Synthesis of acarbose analogues by transglycosylation reactions of Leuconostoc mesenteroides B-512FMC and B-742CB dextransucrases. Carbohydr Res 2002; 337:2427-35. [PMID: 12493227 DOI: 10.1016/s0008-6215(02)00350-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Two new acarbose analogues were synthesized by the reaction of acarbose with sucrose and dextransucrases from Leuconostoc mesenteroides B-512FMC and B-742CB. The major products for each reaction were subjected to yeast fermentation, and then separated and purified by Bio-Gel P2 gel permeation chromatography and descending paper chromatography. The structures of the products were determined by one- and two-dimensional 1H and 13C NMR spectroscopy and by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). B-512FMC-dextransucrase produced one major acarbose product, 2(I)-alpha-D-glucopyranosylacarbose and B-742CB-dextransucrase produced two major acarbose products, 2(I)-alpha-D-glucopyranosylacarbose and 3(IV)-alpha-D-glucopyranosylacarbose.
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Affiliation(s)
- Seung-Heon Yoon
- Laboratory of Carbohydrate Chemistry and Enzymology, 4252 Molecular Biology BLDG, Iowa State University, Ames 50011, USA
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Demuth K, Jördening HJ, Buchholz K. Oligosaccharide synthesis by dextransucrase: new unconventional acceptors. Carbohydr Res 2002; 337:1811-20. [PMID: 12431883 DOI: 10.1016/s0008-6215(02)00272-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The acceptor reactions of dextransucrase offer the potential for a targeted synthesis of a wide range of di-, tri- and higher oligosaccharides by the transfer of a glucosyl group from sucrose to the acceptor. We here report on results which show that the synthetic potential of this enzyme is not restricted to 'normal' saccharides. Additionally functionalized saccharides, such as alditols, aldosuloses, sugar acids, alkyl saccharides, and glycals, and rather unconventional saccharides, such as fructose dianhydride, may also act as acceptors. Some of these acceptors even turned out to be relatively efficient: alpha-D-glucopyranosyl-(1-->5)-D-arabinonic acid, alpha-D-glucopyranosyl-(1-->4)-D-glucitol, alpha-D-glucopyranosyl-(1-->6)-D-glucitol, alpha-D-glucopyranosyl-(1-->6)-D-mannitol, alpha-D-fructofuranosyl-beta-D-fructofuranosyl-(1,2':2,3')-dianhydride, 1,5-anhydro-2-deoxy-D-arabino-hex-1-enitol ('D-glucal'), and may therefore be of interest for future applications of the dextransucrase acceptor reaction.
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Affiliation(s)
- Kristin Demuth
- Technical University, Langer Kamp 5, D-38106 Braunschweig, Germany
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Park KH, Kim MJ, Lee HS, Han NS, Kim D, Robyt JF. Transglycosylation reactions of Bacillus stearothermophilus maltogenic amylase with acarbose and various acceptors. Carbohydr Res 1998; 313:235-46. [PMID: 10209866 DOI: 10.1016/s0008-6215(98)00276-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
It was observed that Bacillus stearothermophilus maltogenic amylase cleaved the first glycosidic bond of acarbose to produce glucose and a pseudotrisaccharide (PTS) that was transferred to C-6 of the glucose to give an alpha-(1-->6) glycosidic linkage and the formation of isoacarbose. The addition of a number of different carbohydrates to the digest gave transfer products in which PTS was primarily attached alpha-(1-->6) to D-glucose, D-mannose, D-galactose, and methyl alpha-D-glucopyranoside. With D-fructopyranose and D-xylopyranose, PTS was linked alpha-(1-->5) and alpha-(1-->4), respectively. PTS was primarily transferred to C-6 of the nonreducing residue of maltose, cellobiose, lactose, and gentiobiose. Lesser amounts of alpha-(1-->3) and/or alpha-(1-->4) transfer products were also observed for these carbohydrate acceptors. The major transfer product to sucrose gave PTS linked alpha-(1-->4) to the glucose residue. alpha,alpha-Trehalose gave two major products with PTS linked alpha-(1-->6) and alpha-(1-->4). Maltitol gave two major products with PTS linked alpha-(1-->6) and alpha-(1-->4) to the glucopyranose residue. Raffinose gave two major products with PTS linked alpha-(1-->6) and alpha-(1-->4) to the D-galactopyranose residue. Maltotriose gave two major products with PTS linked alpha-(1-->6) and alpha-(1-->4) to the nonreducing end glucopyranose residue. Xylitol gave PTS linked alpha-(1-->5) as the major product and D-glucitol gave PTS linked alpha-(1-->6) as the only product. The structures of the transfer products were determined using thin-layer chromatography, high-performance ion chromatography, enzyme hydrolysis, methylation analysis and 13C NMR spectroscopy. The best acceptor was gentiobiose, followed closely by maltose and cellobiose, and the weakest acceptor was D-glucitol.
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Affiliation(s)
- K H Park
- Department of Food Science and Technology and Research Center for New Bio-Materials in Agriculture, Seoul National University, Suwon, South Korea.
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Mechanism and action of glucansucrases. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s0921-0423(96)80359-5] [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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19
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Mechanism and action of glucansucrases. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0921-0423(06)80112-7] [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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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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Separation and quantitative determination of nanogram quantities of maltodextrins and isomaltodextrins by thin-layer chromatography. Carbohydr Res 1994. [DOI: 10.1016/0008-6215(94)84285-x] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
The maltodextrin (maltose through maltoheptaose) acceptor reactions of two Streptococcus mutans 6715 glucosyltransferases (GTF-I and GTF-S) were studied. The acceptor product structures were determined by comparing them with the known structures of the acceptor products of Leuconostoc mesenteroides B-512FM dextransucrase (EC 2.4.1.5) and L. mesenteroides B-1355 alternansucrase (EC 2.4.1.140). When reacted with maltose (G2), both GTF-I and GTF-S transferred a D-glucopyranose from sucrose to the nonreducing glucosyl residue to give panose (6(2)-alpha-D-glucopyranosyl maltose). Panose then served as an acceptor to give two further acceptor products, 6(2)-alpha-isomaltosyl maltose and 6(2)-alpha-nigerosyl maltose. 6(2)-alpha-Isomaltosyl maltose then went on to serve as an acceptor to give a series of homologous acceptor products with isomaltodextrin chains attached to C-6 of the nonreducing-end residue of maltose, while 6(2)-alpha-nigerosyl maltose did not further react. When reacted with other maltodextrins (G3-G7), both GTF-I and GTF-S transferred a D-glucopyranose to C-6 of either the nonreducing-end or the reducing-end residues of the maltodextrins, forming alpha(1----6) linkages. When D-glucopyranose was transferred to the nonreducing-end residue by GTF-I or GTF-S, the first product was also an acceptor to give the second product, which then served as an acceptor to give the third product, etc., to give a homologous series of products. When D-glucopyranose was transferred to the reducing-end residue, the acceptor product that formed did not readily serve as an acceptor, or served only as a very poor acceptor, to give a small amount of the next homologue, as was the case for G7 with GTF-S. In addition, GTF-I also transferred D-glucopyranose to the reducing-end or to the nonreducing-end residue of maltotriose, forming alpha(1----3) linkages, to give 3(3)-alpha-D-glucopyranosyl maltotriose and 3(1)-alpha-D-glucopyranosyl maltotriose. Neither of these acceptor products further served as acceptors to give a homologous series. Under equivalent conditions of equimolar amounts of acceptor and sucrose, maltose and maltotriose are much better acceptors with GTF-I than they are with GTF-S, which is better than L. mesenteroides B-512FM dextransucrase. The three enzymes display significantly different efficiencies for the different maltodextrin acceptor reactions, GTF-I and GTF-S having much higher efficiencies than L. mesenteroides B-512FM dextransucrase.
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Affiliation(s)
- D T Fu
- Department of Biochemistry and Biophysics, Iowa State University, Ames 50011
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