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Abstract
Presented herein are two complementary approaches to the synthesis of the core N-glycan pentasaccharide. The first, a traditional manual approach in solution, makes use of the H-bond-mediated aglycone delivery method for the highly diastereoselective introduction of the β-mannosidic linkage at room temperature. The synthesis of the core pentasaccharide was also accomplished using an high-performance liquid chromatography-assisted automated approach. The overall assembly was swift (8 h) and efficient (31%).
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Affiliation(s)
- Salvatore G Pistorio
- Department of Chemistry and Biochemistry , University of Missouri-St. Louis One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Scott A Geringer
- Department of Chemistry and Biochemistry , University of Missouri-St. Louis One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Keith J Stine
- Department of Chemistry and Biochemistry , University of Missouri-St. Louis One University Boulevard , St. Louis , Missouri 63121 , United States
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry , University of Missouri-St. Louis One University Boulevard , St. Louis , Missouri 63121 , United States
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2
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Zhang Q, Howell PL, Overkleeft HS, Filippov DV, van der Marel GA, Codée JDC. Chemical synthesis of guanosine diphosphate mannuronic acid (GDP-ManA) and its C-4-O-methyl and C-4-deoxy congeners. Carbohydr Res 2017; 450:12-18. [PMID: 28822279 DOI: 10.1016/j.carres.2017.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 11/29/2022]
Abstract
Described is the first synthesis of guanosine diphosphate mannuronic acid (GDP-ManA), the sugar donor used by algae and bacteria for the production of alginate, an anionic polysaccharide composed of β-d-mannuronic acid (ManA) and α-l-guluronic acid (GulA). Understanding the biosynthesis of these polyanionic polysaccharides on the molecular level, opens up avenues to use and modulate the biosynthesis machinery for biotechnological and therapeutic applications. The synthesis reported here delivers multi-milligram amounts of the GDP-ManA donor that can be used to study the polymerase (Alg8 in Pseudomonas aeruginosa) that generates the poly-ManA chain. Also reported is the assembly of two close analogues of GDP-ManA: the first bears a C-4-O-methyl group, while the second has been deoxygenated at this position. Both molecules may be used as "chain stoppers" in future enzymatic ManA polymerisation reactions. The crucial pyrophosphate linkage of the GDP-mannuronic acids has been constructed by the phosphorylation of the appropriate ManA-1-phosphates with a guanosine phosphoramidite.
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Affiliation(s)
- Qingju Zhang
- Bio-organic Synthesis Group, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - P Lynne Howell
- Program in Molecular Medicine, The Hospital for Sick Children, Toronto, ON, Canada; Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Herman S Overkleeft
- Bio-organic Synthesis Group, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Dmitri V Filippov
- Bio-organic Synthesis Group, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Bio-organic Synthesis Group, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Jeroen D C Codée
- Bio-organic Synthesis Group, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands.
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3
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Fiebig T, Freiberger F, Pinto V, Romano MR, Black A, Litschko C, Bethe A, Yashunsky D, Adamo R, Nikolaev A, Berti F, Gerardy-Schahn R. Molecular cloning and functional characterization of components of the capsule biosynthesis complex of Neisseria meningitidis serogroup A: toward in vitro vaccine production. J Biol Chem 2014; 289:19395-407. [PMID: 24849599 DOI: 10.1074/jbc.m114.575142] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The human pathogen Neisseria meningitidis (Nm) is a leading cause of bacterial meningitis and sepsis globally. A major virulence factor of Nm is the capsular polysaccharide (CPS), which in Nm serogroup A consists of N-acetyl-mannosamine-1-phosphate units linked together by phosphodiester linkages [ → 6)-α-D-ManNAc-(1 → OPO3 (-)→]n. Acetylation in O-3 (to a minor extent in O-4) position results in immunologically active polymer. In the capsule gene cluster (cps) of Nm, region A contains the genetic information for CPSA biosynthesis. Thereby the open reading frames csaA, -B, and -C are thought to encode the UDP-N-acetyl-D-glucosamine-2-epimerase, poly-ManNAc-1-phosphate-transferase, and O-acetyltransferase, respectively. With the aim to use a minimal number of recombinant enzymes to produce immunologically active CPSA, we cloned the genes csaA, csaB, and csaC and functionally characterized the purified recombinant proteins. If recombinant CsaA and CsaB were combined in one reaction tube, priming CPSA-oligosaccharides were efficiently elongated with UDP-GlcNAc as the donor substrate, confirming that CsaA is the functional UDP-N-acetyl-D-glucosamine-2-epimerase and CsaB the functional poly-ManNAc-1-phosphate-transferase. Subsequently, CsaB was shown to transfer ManNAc-1P onto O-6 of the non-reducing end sugar of priming oligosaccharides, to prefer non-O-acetylated over O-acetylated primers, and to efficiently elongate the dimer of ManNAc-1-phosphate. The in vitro synthesized CPSA was purified, O-acetylated with recombinant CsaC, and proven to be identical to the natural CPSA by (1)H NMR, (31)P NMR, and immunoblotting. If all three enzymes and their substrates were combined in a one-pot reaction, nature identical CPSA was obtained. These data provide the basis for the development of novel vaccine production protocols.
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Affiliation(s)
- Timm Fiebig
- From the Institute for Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Friedrich Freiberger
- From the Institute for Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Vittoria Pinto
- Novartis Vaccines, Research, Via Fiorentina 1, 53100 Siena, Italy
| | | | - Alan Black
- College of Life Sciences, University of Dundee, Dundee, DD1 5EH, Scotland, United Kingdom, and
| | - Christa Litschko
- From the Institute for Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Andrea Bethe
- From the Institute for Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Dmitry Yashunsky
- the Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, Pogodinskaya Street 10, Moscow 119832, Russian Federation
| | - Roberto Adamo
- Novartis Vaccines, Research, Via Fiorentina 1, 53100 Siena, Italy
| | - Andrei Nikolaev
- College of Life Sciences, University of Dundee, Dundee, DD1 5EH, Scotland, United Kingdom, and
| | - Francesco Berti
- Novartis Vaccines, Research, Via Fiorentina 1, 53100 Siena, Italy,
| | - Rita Gerardy-Schahn
- From the Institute for Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany,
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4
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Iwata R, Nishina K, Yokota T, Wada T. Synthesis and properties of double-stranded RNA-bindable oligodiaminogalactose derivatives conjugated with vitamin E. Bioorg Med Chem 2014; 22:1394-403. [DOI: 10.1016/j.bmc.2013.12.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 12/24/2013] [Accepted: 12/27/2013] [Indexed: 11/24/2022]
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5
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Magellan H, Boccara M, Drujon T, Soulié MC, Guillou C, Dubois J, Becker HF. Discovery of two new inhibitors of Botrytis cinerea chitin synthase by a chemical library screening. Bioorg Med Chem 2013; 21:4997-5003. [DOI: 10.1016/j.bmc.2013.06.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 06/19/2013] [Accepted: 06/24/2013] [Indexed: 11/30/2022]
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Li Y, Zhou Y, Ma Y, Li X. Design and synthesis of novel cell wall inhibitors of Mycobacterium tuberculosis GlmM and GlmU. Carbohydr Res 2011; 346:1714-20. [DOI: 10.1016/j.carres.2011.05.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 05/17/2011] [Accepted: 05/21/2011] [Indexed: 11/18/2022]
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Gold H, van Delft P, Meeuwenoord N, Codée JDC, Filippov DV, Eggink G, Overkleeft HS, van der Marel GA. Synthesis of sugar nucleotides by application of phosphoramidites. J Org Chem 2010; 73:9458-60. [PMID: 18991380 DOI: 10.1021/jo802021t] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new method for the construction of pyrophosphates is reported based on the coupling of a sugar phosphate and a nucleoside phosphoramidite. The in situ formed phosphate-phosphite intermediate was subsequently oxidized with tBuOOH. Three UDP-N-acetylglucosamine derivatives were prepared using this one-pot procedure in good yields.
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Affiliation(s)
- Henrik Gold
- Leiden Institute of Chemistry, Bioorganic Chemistry, Gorlaeus Laboratories, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
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8
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Fang J, Guan W, Cai L, Gu G, Liu X, Wang PG. Systematic study on the broad nucleotide triphosphate specificity of the pyrophosphorylase domain of the N-acetylglucosamine-1-phosphate uridyltransferase from Escherichia coli K12. Bioorg Med Chem Lett 2009; 19:6429-32. [PMID: 19804974 DOI: 10.1016/j.bmcl.2009.09.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2009] [Revised: 09/04/2009] [Accepted: 09/11/2009] [Indexed: 11/19/2022]
Abstract
N-Acetylglucosamine-1-phosphate uridyltransferase (GlmU) from Escherichia coli K12 is a bifunctional enzyme that catalyzes both the acetyltransfer and uridyltransfer reactions in the prokaryotic UDP-GlcNAc biosynthetic pathway. In this study, we report the broad substrate specificity of the pyrophosphorylase domain of GlmU during its uridyltransfer reaction and the substrate priority is ranked in the following order: UTP > dUTP > dTTP >> CTP > dATP/dm(6) ATP. This pyrophosphorylase domain of GlmU is also a tool to synthesize UDP-GlcNAc analogs, two examples of which were synthesized herein in multiple mg scale in vitro.
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Affiliation(s)
- Junqiang Fang
- National Glycoengineering Research Center and The State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250100, People's Republic of China
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10
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Affiliation(s)
- Gerd K Wagner
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK.
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11
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Serna S, Kardak B, Reichardt NC, Martin-Lomas M. Synthesis of a core trisaccharide building block for the assembly of N-glycan neoconjugates. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Affiliation(s)
- Ramona Danac
- Chemistry Research Laboratory, Oxford University, Mansfield Road, Oxford, OX1 3TA, UK
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13
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Muller T, Danac R, Ball L, Gurr SJ, Fairbanks AJ. Synthesis of UDP-GlcNAc derivatives modified at OH-4 as potential chain-terminators of chitin biosynthesis. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.05.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Abstract
We describe the first synthesis of the C1-phosphonate analog of UDP-GlcNAc, based on a new preparation of the corresponding glycosyl phosphonate. This C-glycosyl analog is shown to be a very weak inhibitor (Ki>10 mM) of fungal chitin synthase, indicating that at least in this case the replacement of the anomeric oxygen with a methylene group is not an innocent substitution.
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Affiliation(s)
- Robert Chang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
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Abstract
An efficient synthesis of the lactam core of pseurotin A has been accomplished. Key features of this synthesis include a tandem oxidation-cyclization to form the lactam from an acetylenic amide precursor. Although coupling of a lactam aldehyde with an appropriate side chain was not effective, it is anticipated that incorporating a partial side chain at an earlier stage should permit completion of the total synthesis of pseurotin A.
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Affiliation(s)
- Judith M Mitchell
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0358, USA
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