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Hashimoto M, Mizukami M, Osuki KI, Fujiwara N, Suda Y, Uchiumi T. Characterization of O-antigen polysaccharide backbone derived from nitric oxide-inducing Mesorhizobium loti MAFF 303099 lipopolysaccharide. Carbohydr Res 2017; 445:44-50. [PMID: 28399430 DOI: 10.1016/j.carres.2017.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/01/2017] [Accepted: 04/02/2017] [Indexed: 11/25/2022]
Abstract
Mesorhizobium loti is a member of rhizobia and establishes nitrogen-fixing symbioses with several Lotus species. Recently, we reported that M. loti MAFF 303099 bacterial cells and their lipopolysaccharide (LPS) preparations are involved in the beginning of the symbiotic process by inducing transient nitric oxide (NO) production in the roots of L. japonicus. We subsequently found that both the polysaccharide (PS) part and the lipid A moiety in LPS are responsible for the NO induction. In this study, we elucidated the chemical structure of M. loti O-polysaccharide (OPS) in PS. PS was prepared by mild acid hydrolysis of M. loti LPS followed by gel filtration chromatography. OPS was subjected to hydrazine treatment to obtain deacylated PS (dPS). Chemical composition analysis, ethylation analysis, and NMR spectra revealed the chemical structure of the M. loti OPS backbone in dPS to be →2)-α-l-6dTalp-(1 → 3)-α-l-6dTalp-(1 → 2)-α-l-Rhap-(1 → 2)-α-l-6dTalp-(1 → 3)-α-l-6dTalp-(1 → 3)-α-l-Rhap-(1→.
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Affiliation(s)
- Masahito Hashimoto
- Department of Chemistry, Biotechnology, and Chemical Engineering, Kagoshima University, Korimoto 1-21-40, Kagoshima, 890-0065, Japan.
| | - Masato Mizukami
- Department of Chemistry, Biotechnology, and Chemical Engineering, Kagoshima University, Korimoto 1-21-40, Kagoshima, 890-0065, Japan
| | - Ken-Ichi Osuki
- Department of Chemistry and Bioscience, Kagoshima University, Korimoto 1-21-35, Kagoshima, 890-0065, Japan
| | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, 3-1-3, Gakuenminami, Nara, 631-8585, Japan
| | - Yasuo Suda
- Department of Chemistry, Biotechnology, and Chemical Engineering, Kagoshima University, Korimoto 1-21-40, Kagoshima, 890-0065, Japan
| | - Toshiki Uchiumi
- Department of Chemistry and Bioscience, Kagoshima University, Korimoto 1-21-35, Kagoshima, 890-0065, Japan
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Structural studies of the lipopolysaccharide from the fish pathogen Aeromonas veronii strain Bs19, serotype O16. Mar Drugs 2014; 12:1298-316. [PMID: 24608968 PMCID: PMC3967211 DOI: 10.3390/md12031298] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 01/27/2014] [Accepted: 02/08/2014] [Indexed: 01/17/2023] Open
Abstract
Chemical analyses, mass spectrometry, and NMR spectroscopy were applied to study the structure of the lipopolysaccharide (LPS) isolated from Aeromonas veronii strain Bs19, serotype O16. ESI-MS revealed that the most abundant LPS glycoforms have tetra-acylated or hexa-acylated lipid A species, consisting of a bisphosphorylated GlcN disaccharide with an AraN residue as a non-stoichiometric substituent, and a core oligosaccharide composed of Hep5Hex3HexN1Kdo1P1. Sugar and methylation analysis together with 1D and 2D 1H and 13C NMR spectroscopy were the main methods used, and revealed that the O-specific polysaccharide (OPS) of A. veronii Bs19 was built up of tetrasaccharide repeating units with the structure: →4)-α-d-Quip3NAc-(1→3)-α-l-Rhap-(1→4)-β-d-Galp-(1→3)-α-d-GalpNAc-(1→. This composition was confirmed by mass spectrometry. The charge-deconvoluted ESI FT-ICR MS recorded for the LPS preparations identified mass peaks of SR- and R-form LPS species, that differed by Δm = 698.27 u, a value corresponding to the calculated molecular mass of one OPS repeating unit (6dHexNAc6dHexHexHexNAc-H2O). Moreover, unspecific fragmentation spectra confirmed the sequence of the sugar residues in the OPS and allowed to assume that the elucidated structure also represented the biological repeating unit.
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Turska-Szewczuk A, Lindner B, Komaniecka I, Kozinska A, Pekala A, Choma A, Holst O. Structural and immunochemical studies of the lipopolysaccharide from the fish pathogen, Aeromonas bestiarum strain K296, serotype O18. Mar Drugs 2013; 11:1235-55. [PMID: 23595053 PMCID: PMC3705401 DOI: 10.3390/md11041235] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 03/08/2013] [Accepted: 03/18/2013] [Indexed: 11/16/2022] Open
Abstract
Chemical analyses and mass spectrometry were used to study the structure of the lipopolysaccharide (LPS) isolated from Aeromonas bestiarum strain K296, serotype O18. ESI-MS revealed that the most abundant A. bestiarum LPS glycoforms have a hexa-acylated or tetra-acylated lipid A with conserved architecture of the backbone, consisting of a 1,4′-bisphosphorylated β-(1→6)-linked d-GlcN disaccharide with an AraN residue as a non-stoichiometric substituent and a core oligosaccharide composed of Kdo1Hep6Hex1HexN1P1. 1D and 2D NMR spectroscopy revealed that the O-specific polysaccharide (OPS) of A. bestiarum K296 consists of a branched tetrasaccharide repeating unit containing two 6-deoxy-l-talose (6dTalp), one Manp and one GalpNAc residues; thus, it is similar to that of the OPS of A. hydrophila AH-3 (serotype O34) in both the sugar composition and the glycosylation pattern. Moreover, 3-substituted 6dTalp was 2-O-acetylated and additional O-acetyl groups were identified at O-2 and O-4 (or O-3) positions of the terminal 6dTalp. Western blots with polyclonal rabbit sera showed that serotypes O18 and O34 share some epitopes in the LPS. The very weak reaction of the anti-O34 serum with the O-deacylated LPS of A. bestiarum K296 might have been due to the different O-acetylation pattern of the terminal 6dTalp. The latter suggestion was further confirmed by NMR.
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Affiliation(s)
- Anna Turska-Szewczuk
- Department of Genetics and Microbiology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland; E-Mails: (I.K.); (A.C.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +48-81-537-50-18; Fax: +48-81-537-59-59
| | - Buko Lindner
- Division of Immunochemistry, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Parkallee 10, D-23845 Borstel, Germany; E-Mail:
| | - Iwona Komaniecka
- Department of Genetics and Microbiology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland; E-Mails: (I.K.); (A.C.)
| | - Alicja Kozinska
- Department of Fish Diseases, National Veterinary Research Institute, Partyzantow 57, Pulawy 24-100, Poland; E-Mails: (A.K.); (A.P.)
| | - Agnieszka Pekala
- Department of Fish Diseases, National Veterinary Research Institute, Partyzantow 57, Pulawy 24-100, Poland; E-Mails: (A.K.); (A.P.)
| | - Adam Choma
- Department of Genetics and Microbiology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland; E-Mails: (I.K.); (A.C.)
| | - Otto Holst
- Division of Structural Biochemistry, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Parkallee 4a/c, D-23845 Borstel, Germany; E-Mail:
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Cai X, Zong G, Xu Y, Zhang J, Liang X, Wang D. Efficient synthesis of a 6-deoxytalose tetrasaccharide related to the antigenic O-polysaccharide produced by Aggregatibacter actinomycetemcomitans serotype c. Carbohydr Res 2010; 345:1230-4. [DOI: 10.1016/j.carres.2010.04.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 03/31/2010] [Accepted: 04/09/2010] [Indexed: 11/25/2022]
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Abstract
The establishment of nitrogen-fixing symbiosis between a legume plant and its rhizobial symbiont requires that the bacterium adapt to changing conditions that occur with the host plant that both promotes and allows infection of the host root nodule cell, regulates and resists the host defense response, permits the exchange of metabolites, and contributes to the overall health of the host. This adaptive process involves changes to the bacterial cell surface and, therefore, structural modifications to the lipopolysaccharide (LPS). In this chapter, we describe the structures of the LPSs from symbiont members of the Rhizobiales, the genetics and mechanism of their biosynthesis, the modifications that occur during symbiosis, and their possible functions.
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Zdorovenko EL, Valueva OA, Kachala VV, Shashkov AS, Kocharova NA, Knirel YA, Kutkowska J, Turska-Szewczuk A, Urbanik-Sypniewska T, Choma A, Russa R. Structure of the O-polysaccharides of the lipopolysaccharides of Mesorhizobium loti HAMBI 1148 and Mesorhizobium amorphae ATCC 19655 containing two O-methylated monosaccharides. Carbohydr Res 2009; 344:2519-27. [PMID: 19850286 DOI: 10.1016/j.carres.2009.08.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Revised: 08/27/2009] [Accepted: 08/30/2009] [Indexed: 11/29/2022]
Abstract
The O-polysaccharide of Mesorhizobium loti HAMBI 1148 was obtained by mild acid degradation of the lipopolysaccharide and studied by sugar and methylation analyses, Smith degradation, and (1)H and (13)C NMR spectroscopies, including 2D (1)H/(1)H COSY, TOCSY, ROESY, and H-detected (1)H/(13)C HSQC experiments. The O-polysaccharide was found to have a branched hexasaccharide-repeating unit of the following structure: [Formula: see text] where 2-acetamido-2-deoxy-4-O-methyl-D-glucose (D-GlcNAc4Me) and methyl group on 2-substituted D-rhamnose (Me) shown in italics are present in approximately 80% and approximately 40% repeating units, respectively. Similar studies of the O-polysaccharide from Mesorhizobium amorphae ATCC 19655 by sugar analysis and NMR spectroscopy revealed essentially the same structure but a higher content of 3-O-methyl-D-rhamnose ( approximately 70%).
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Affiliation(s)
- Evelina L Zdorovenko
- ND Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991 Moscow, Russia.
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Yan S, Liang X, Diao P, Yang Y, Zhang J, Wang D, Kong F. Synthesis of the 6-deoxytalose-containing tetrasaccharide of the glycopeptidolipid from Mycobacterium intracellare serotype 7. Carbohydr Res 2008; 343:3107-11. [DOI: 10.1016/j.carres.2008.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 09/04/2008] [Accepted: 09/15/2008] [Indexed: 10/21/2022]
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