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Piacente F, De Castro C, Jeudy S, Gaglianone M, Laugieri ME, Notaro A, Salis A, Damonte G, Abergel C, Tonetti MG. The rare sugar N-acetylated viosamine is a major component of Mimivirus fibers. J Biol Chem 2017; 292:7385-7394. [PMID: 28314774 DOI: 10.1074/jbc.m117.783217] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/16/2017] [Indexed: 12/13/2022] Open
Abstract
The giant virus Mimivirus encodes an autonomous glycosylation system that is thought to be responsible for the formation of complex and unusual glycans composing the fibers surrounding its icosahedral capsid, including the dideoxyhexose viosamine. Previous studies have identified a gene cluster in the virus genome, encoding enzymes involved in nucleotide-sugar production and glycan formation, but the functional characterization of these enzymes and the full identification of the glycans found in viral fibers remain incomplete. Because viosamine is typically found in acylated forms, we suspected that one of the genes might encode an acyltransferase, providing directions to our functional annotations. Bioinformatic analyses indicated that the L142 protein contains an N-terminal acyltransferase domain and a predicted C-terminal glycosyltransferase. Sequence analysis of the structural model of the L142 N-terminal domain indicated significant homology with some characterized sugar acetyltransferases that modify the C-4 amino group in the bacillosamine or perosamine biosynthetic pathways. Using mass spectrometry and NMR analyses, we confirmed that the L142 N-terminal domain is a sugar acetyltransferase, catalyzing the transfer of an acetyl moiety from acetyl-CoA to the C-4 amino group of UDP-d-viosamine. The presence of acetylated viosamine in vivo has also been confirmed on the glycosylated viral fibers, using GC-MS and NMR. This study represents the first report of a virally encoded sugar acetyltransferase.
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Affiliation(s)
- Francesco Piacente
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy
| | | | - Sandra Jeudy
- the Aix-Marseille Université, Centre National de la Recherche Scientifique, Information Génomique et Structurale, UMR 7256, IMM FR3479, 13288 Marseille Cedex 9, France
| | - Matteo Gaglianone
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy
| | - Maria Elena Laugieri
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy
| | - Anna Notaro
- the Aix-Marseille Université, Centre National de la Recherche Scientifique, Information Génomique et Structurale, UMR 7256, IMM FR3479, 13288 Marseille Cedex 9, France.,Chemical Sciences, University of Napoli, 80138 Napoli, Italy, and
| | - Annalisa Salis
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy
| | - Gianluca Damonte
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy
| | - Chantal Abergel
- the Aix-Marseille Université, Centre National de la Recherche Scientifique, Information Génomique et Structurale, UMR 7256, IMM FR3479, 13288 Marseille Cedex 9, France
| | - Michela G Tonetti
- From the Department of Experimental Medicine and Center of Excellence for Biomedical Research, University of Genova, 16126 Genova, Italy,
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Kochkin DV, Khandy MT, Zaitsev GP, Tolkacheva NV, Shashkov AS, Titova MV, Chirva VY, Nosov AM. Protodioscin in Dioscorea deltoidea Suspension Cell Culture. Chem Nat Compd 2016. [DOI: 10.1007/s10600-016-1734-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Kenyon JJ, Marzaioli AM, De Castro C, Hall RM. 5,7-di-N-acetyl-acinetaminic acid: A novel non-2-ulosonic acid found in the capsule of an Acinetobacter baumannii isolate. Glycobiology 2015; 25:644-54. [PMID: 25595948 DOI: 10.1093/glycob/cwv007] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/09/2015] [Indexed: 01/25/2023] Open
Abstract
An Acinetobacter baumannii global clone 1 (GC1) isolate was found to carry a novel capsule biosynthesis gene cluster, designated KL12. KL12 contains genes predicted to be involved in the synthesis of simple sugars, as well as ones for N-acetyl-L-fucosamine (L-FucpNAc) and N-acetyl-D-fucosamine (D-FucpNAc). It also contains a module of 10 genes, 6 of which are required for 5,7-di-N-acetyl-legionaminic acid synthesis. Analysis of the composition of the capsule revealed the presence of N-acetyl-D-galactosamine, L-FucpNAc and D-FucpNAc, confirming the role of fnlABC and fnr/gdr genes in the synthesis of L-FucpNAc and D-FucpNAc, respectively. A non-2-ulosonic acid, shown to be 5,7-diacetamido-3,5,7,9-tetradeoxy-L-glycero-L-altro-non-2-ulosonic acid, was also detected. This sugar has not previously been recovered from biological source, and was designated 5,7-di-N-acetyl-acinetaminic acid (Aci5Ac7Ac). Proteins encoded by novel genes, named aciABCD, were predicted to be involved in the conversion of 5,7-di-N-acetyl-legionaminic acid to Aci5Ac7Ac. A pathway for 5,7-di-N-acetyl-8-epilegionaminic acid biosynthesis was also proposed. In available A. baumannii genomes, genes for the synthesis of 5,7-di-N-acetyl-acinetaminic acid were only detected in two closely related capsule gene clusters, KL12 and KL13, which differ only in the wzy gene. KL12 and KL13 are carried by isolates belonging to clinically important clonal groups, GC1, GC2 and ST25. Genes for the synthesis of N-acyl derivatives of legionaminic acid were also found in 10 further A. baumannii capsule gene clusters, and three carried additional genes for production of 5,7-di-N-acetyl-8-epilegionaminic acid.
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Affiliation(s)
- Johanna J Kenyon
- School of Molecular Bioscience, The University of Sydney, Sydney, NSW 2006, Australia
| | | | | | - Ruth M Hall
- School of Molecular Bioscience, The University of Sydney, Sydney, NSW 2006, Australia
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Kochkin DV, Kachala VV, Shashkov AS, Chizhov AO, Chirva VY, Nosov AM. Malonyl-ginsenoside content of a cell-suspension culture of Panax japonicus var. repens. PHYTOCHEMISTRY 2013; 93:18-26. [PMID: 23642388 DOI: 10.1016/j.phytochem.2013.03.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 03/23/2013] [Accepted: 03/27/2013] [Indexed: 06/02/2023]
Abstract
The presence of large amounts of ginsenosides malonyl-Rb1, -Rc, -Rb2, and -Rd in a suspension culture of Panax japonicus var. repens cells was demonstrated for the first time. Identification of ginsenoside malonyl-Rb1 was based on chromatographic, chemical, and spectroscopic evidence. Ginsenosides malonyl-Rc, -Rb2, and -Rd were identified on the basis of chromatographic and chemical data. Content and composition of the individual ginsenosides (Rg1, R0, malonyl-Rb1, Rb1, Rc, Rb2, and Rd) were monitored in the suspension culture over 4 years. The RP-HPLC-UV analysis showed that Rg1, R0, and malonyl-Rb1 accounted for more than 75% of the total pool of ginsenosides. In accordance with this result, and data analysis reported in the literature, we propose that ginsenoside formation in the cells of P. japonicus var. repens in vitro is closely related to the cellular compartmentation of these substances. In particular, the accumulation of the 20(S)-protopanaxadiol ginsenosides (especially Rb1) is strongly dependent on their pattern of malonylation, which likely targets them for transport into the vacuole.
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Affiliation(s)
- Dmitry V Kochkin
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, 119234 Moscow, Russia.
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5
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Structure of the alanopine-containing O-polysaccharide and serological cross-reactivity of the lipopolysaccharide of Proteus vulgaris HSC 438 classified into a new Proteus serogroup, O76. Microbiology (Reading) 2013; 159:1036-1043. [DOI: 10.1099/mic.0.067231-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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6
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Kaca W, Glenska J, Lechowicz L, Grabowski S, Brauner A, Kwinkowski M. Serotyping of Proteus mirabilis clinical strains based on lipopolysaccharide O-polysaccharide and core oligosaccharide structures. BIOCHEMISTRY (MOSCOW) 2012; 76:851-61. [PMID: 21999547 DOI: 10.1134/s0006297911070169] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this work was to serotype Proteus mirabilis urinary tract infection (UTI) strains based on chemically defined O-antigens with the use of two clinical collections from Sweden and Poland consisting of 99 and 24 UTI strains, respectively. A simple two-step serotyping scheme was proposed using enzyme immunoassay with heat-stable surface antigens of Proteus cells and immunoblotting with isolated lipopolysaccharides (LPSs). Using polyclonal anti-P. mirabilis rabbit antisera, 50 Swedish and 8 Polish strains were classified into serogroups O10, O38, O36, O30, O17, O23, O9, O40, O49, O27, O5, O13, O24, O14, and O33. From the Swedish strains, 10 belonged to serogroup O10 and five to each of serogroups O38, O36, and O9. Therefore, none of the O-serogroups was predominant. The majority of the serotyped clinical strains possess acidic O-antigens containing uronic acids and various acidic non-carbohydrate substituents. In immunoblotting, antisera cross-reacted with both O-antigen and core of LPSs. The core region of 19 LPSs bound a single serum, and that of 12 LPSs bound more than two sera. Following bioinformatic analysis of the available sequences, a molecular approach to the prediction of Proteus core oligosaccharide structures was proposed. The identification of the core type of P. mirabilis R110, derived from a serogroup O3 wild strain, using restriction fragments length polymorphism analysis of galacturonic acid transferase is shown as an example. In summary, the most frequent O-serogroups among P. mirabilis UTI stains were identified. The diversity of serological reactions of LPSs is useful for serotyping of P. mirabilis clinical isolates. A possible role of the acidic components of O-antigens in UTI is discussed.
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Affiliation(s)
- W Kaca
- Department of Microbiology, Institute of Biology, Jan Kochanowski University, Kielce, Poland.
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7
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Kochkin DV, Kachala VV, Nosov AM. Malonyl-ginsenoside Rb1 in cell suspension culture of Panax japonicus var. repens. DOKL BIOCHEM BIOPHYS 2012; 441:294-7. [PMID: 22218959 DOI: 10.1134/s1607672911060135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Indexed: 11/23/2022]
Affiliation(s)
- D V Kochkin
- Faculty of Biology, Moscow State University, Moscow, 119991, Russia
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8
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Kondakova AN, Kirsheva NA, Shashkov AS, Shaikhutdinova RZ, Arabtsky NP, Ivanov SA, Anisimov AP, Knirel YA. Low structural diversity of the O-polysaccharides of Photorhabdus asymbiotica subspp. asymbiotica and australis and their similarity to the O-polysaccharides of taxonomically remote bacteria including Francisella tularensis. Carbohydr Res 2011; 346:1951-5. [PMID: 21816392 DOI: 10.1016/j.carres.2011.05.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/11/2011] [Accepted: 05/15/2011] [Indexed: 10/18/2022]
Abstract
The O-polysaccharides were isolated from the lipopolysaccharides of emerging human pathogens Photorhabdus asymbiotica subsp. asymbiotica US-86 and US-87 and subsp. australis AU36, AU46, and AU92. Studies by sugar analysis and (1)H and (13)C NMR spectroscopy before and after O-deacetylation showed that the O-polysaccharide structures are essentially identical within, and only slightly different between, the subspecies. The following structures of the repeating units of the O-polysaccharides were established: →3)-β-d-Quip4NGlyFo-(1→4)-α-d-GalpNAcAN3Ac-(1→4)-α-d-GalpNAcA3R-(1→3)-α-d-QuipNAc-(1→ where GalNAcA stands for 2-acetamido-2-deoxygalacturonic acid, GalNAcAN for amide of GalNAcA, QuiNAc for 2-acetamido-2,6-dideoxyglucose, and Qui4NGlyFo for 4,6-dideoxy-4-(N-formylglycyl)aminoglucose; R=Ac in subsp. asymbiotica or H in subsp. australis. The structures established resemble those of a number of taxonomically remote bacteria including Francisella tularensis (Vinogradov, E. V.; Shashkov, A. S.; Knirel, Y. A.; Kochetkov, N. K.; Tochtamysheva, N. V.; Averin, S. P.; Goncharova, O. V.; Khlebnikov, V. S. Carbohydr. Res.1991, 214, 289-297), which differs in (i) the presence of a formyl group on Qui4N rather than the N-formylglycyl group, (ii) the mode of the linkage between the repeating units (β1→2 vs α1→3), (iii) amidation of both GalNAcA residues rather than one residue, and iv) the lack of O-acetylation.
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Affiliation(s)
- Anna N Kondakova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia.
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9
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Perepelov AV, Kocharova NA, Knirel YA, Jansson PE, Weintraub A. Structure of the O-polysaccharide of Vibrio cholerae O43 containing a new monosaccharide derivative, 4-(N-acetyl-l-allothreonyl)amino-4,6-dideoxy-d-glucose. Carbohydr Res 2011; 346:430-3. [DOI: 10.1016/j.carres.2010.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 12/07/2010] [Accepted: 12/09/2010] [Indexed: 10/18/2022]
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10
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Perepelov AV, Liu B, Shevelev SD, Senchenkova SN, Hu B, Shashkov AS, Feng L, Knirel YA, Wang L. Structural and genetic characterization of the O-antigen of Salmonella enterica O56 containing a novel derivative of 4-amino-4,6-dideoxy-d-glucose. Carbohydr Res 2010; 345:1891-5. [DOI: 10.1016/j.carres.2010.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 05/05/2010] [Accepted: 05/10/2010] [Indexed: 10/19/2022]
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11
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Arbatsky NP, Kondakova AN, Shashkov AS, Drutskaya MS, Belousov PV, Nedospasov SA, Petrova MA, Knirel YA. Structure of the O-antigen of Acinetobacter lwoffii EK30A; identification of d-homoserine, a novel non-sugar component of bacterial polysaccharides. Org Biomol Chem 2010; 8:3571-7. [PMID: 20539880 DOI: 10.1039/c004090h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We established a peculiar structure of the O-specific polysaccharide (O-antigen) of a psychrotrophic strain of Acinetobacter lwoffii, EK30A, isolated from a 1.6-1.8 million-year-old Siberian permafrost subsoil sediment sample. The polysaccharide was released by mild acid degradation of the lipopolysaccharide and studied using chemical analyses, Smith degradation, (1)H and (13)C NMR spectroscopy and mass spectrometry. It was found to contain d-homoserine, which is N-linked to 4-amino-4,6-dideoxy-d-glucose (Qui4N) and is N-acylated itself with acetyl in about half of the repeating units or (S)-3-hydroxybutanoyl group in the other half. The following is the structure of the tetrasaccharide repeating unit of the polysaccharide: -->3)-beta-d-Quip4NAcyl-(1-->6)-alpha-d-Galp-(1-->4)-alpha-d-GalpNAc-(1-->3)-alpha-d-FucpNAc-(1--> where Acyl stands for either N-acetyl- or N-[(S)-3-hydroxybutanoyl]-d-homoseryl.
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Affiliation(s)
- Nikolay P Arbatsky
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
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12
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Drzewiecka D, Arbatsky NP, Stączek P, Shashkov AS, Knirel YA, Sidorczyk Z. Structural and serological studies of the O-polysaccharide of strains from a newly createdProteusO78 serogroup prevalent in Polish patients. ACTA ACUST UNITED AC 2010; 58:269-76. [DOI: 10.1111/j.1574-695x.2009.00632.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Kocharova NA, Kondakova AN, Ovchinnikova OG, Perepelov AV, Shashkov AS, Knirel YA. N-(1-Carboxyethyl)alanine (alanopine), a new non-sugar component of lipopolysaccharides of Providencia and Proteus. Carbohydr Res 2009; 344:2060-2. [DOI: 10.1016/j.carres.2009.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Revised: 07/09/2009] [Accepted: 07/13/2009] [Indexed: 10/20/2022]
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14
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Perepelov AV, Wang Q, Senchenkova SN, Shevelev SD, Shashkov AS, Feng L, Knirel YA, Wang L. Structure and characterization of the gene cluster of the O-antigen of Escherichia coli O49 containing 4,6-dideoxy-4-[(S)-3-hydroxybutanoylamino]-D-glucose. BIOCHEMISTRY (MOSCOW) 2008; 73:406-10. [PMID: 18457569 DOI: 10.1134/s0006297908040044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of enteropathogenic Escherichia coli O49 and studied by sugar analysis along with one- and two-dimensional 1H- and 13C-NMR spectroscopy. The following structure of the linear tetrasaccharide repeating unit of the O-polysaccharide was established: [formula], where D-Qui4N(S3HOBut) stands for 4,6-dideoxy-4-[(S)-3-hydroxybutanoylamino]-D-glucose and O-acetylation of GlcNAc is partial (~30%). To our knowledge, no N-(3-hydroxybutanoyl) derivative of Qui4N has been hitherto found in bacterial polysaccharides. Gene functions of the O-antigen gene cluster of E. coli O49 were assigned by bioinformatics analysis and found to correspond to the O-polysaccharide structure. Two new genes were revealed and suggested to be responsible for synthesis and transfer of the 3-hydroxybutanoyl group.
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Affiliation(s)
- A V Perepelov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia.
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15
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Arbatsky NP, Kondakova AN, Senchenkova SN, Siwińska M, Shashkov AS, Zych K, Knirel YA, Sidorczyk Z. Structure of a new ribitol teichoic acid-like O-polysaccharide of a serologically separate Proteus vulgaris strain, TG 276-1, classified into a new Proteus serogroup O53. Carbohydr Res 2007; 342:2061-6. [PMID: 17601512 DOI: 10.1016/j.carres.2007.05.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2007] [Revised: 05/23/2007] [Accepted: 05/29/2007] [Indexed: 11/20/2022]
Abstract
An unusual ribitol teichoic acid-like O-polysaccharide was isolated by mild acid degradation of the lipopolysaccharide from a previously non-classified Proteus vulgaris strain TG 276-1. Structural studies using chemical analyses and 2D (1)H and (13)C NMR spectroscopy showed that the polysaccharide is a zwitterionic polymer with a repeating unit containing 2-acetamido-4-amino-2,4,6-trideoxy-D-galactose (D-FucNAc4N) and two D-ribitol phosphate (D-Rib-ol-5-P) residues and having the following structure:[formula: see text] where the non-glycosylated ribitol residue is randomly mono-O-acetylated. Based on the unique O-polysaccharide structure and the finding that the strain studied is serologically separate among Proteus bacteria, we propose to classify P. vulgaris strain TG 276-1 into a new Proteus serogroup, O53.
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Affiliation(s)
- Nikolay P Arbatsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991 Moscow, Russia
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Zabłotni A, Perepelov AV, Knirel YA, Sidorczyk Z. Structure of the O-polysaccharide of Proteus mirabilis OC (CCUG 10702) from a new proposed Proteus serogroup O75. Carbohydr Res 2005; 340:1908-13. [PMID: 15979596 DOI: 10.1016/j.carres.2005.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2005] [Revised: 05/13/2005] [Accepted: 05/13/2005] [Indexed: 10/25/2022]
Abstract
A neutral O-polysaccharide was obtained by mild acid degradation of the lipopolysaccharide of Proteus mirabilis OC (CCUG 10702) and studied by sugar and methylation analyses and (1)H and (13)C NMR spectroscopy. The following structure of the tetrasaccharide repeating unit of the polysaccharide was established: [structure: see text]. Based on the unique structure of the O-polysaccharide and serological data, we propose classifying P. mirabilis OC (CCUG 10702) into a new separate Proteus serogroup O75. A weak cross-reaction of O-antiserum against P. mirabilis OC with the lipopolysaccharide of P. mirabilis O49 was accounted for by a similarity in the O-polysaccharide structures.
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Affiliation(s)
- Agnieszka Zabłotni
- Institute of Microbiology and Immunology, University of Lodz, 90-237 Lodz, Poland
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