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Cell walls of Bacillus subtilis VKM B-760 and VKM B-764 are characterized by heterogeneous composition of teichoic acids. Polymer I with structure -6)-β-D-Galp-(1→1)-sn-Gro-(3-P-, polymer II with structure -6)-α-D-Glcp-(1→1)-sn-Gro-(3-P-, and a small amount of unsubstituted 1,3-poly(glycerol phosphate) were detected in strain VKM B-760. Strain VKM B-764 contains an analogous set of teichoic acids, but a characteristic feature of polymer II is the presence of disubstituted glycerol residue with α-glucopyranose localization in the integral chain at C-1 hydroxyl and β-glucopyranose as a side branch at C-2 hydroxyl (polymer III): -6)-α-D-Glcp-(1→1)-[β-D-Glcp-(1→2)]-sn-Gro-(3-P-. The structures of polymer I in bacilli and polymer III in Gram-positive bacteria are described for the first time. Teichoic acids were studied by chemical methods and on the basis of combined analysis of one-dimensional 1H-, 13C-, and (31)P-NMR spectra, homonuclear two-dimensional (1)H/(1)H COSY, TOCSY, and ROESY, and heteronuclear two-dimensional (1)H/(13)C gHSQC- and HMQC-TOCSY experiments. Simultaneous presence of several different structure teichoic acids in the bacillus cell walls as well as chemotaxonomical perspectives of the application of these polymers as species-specific markers for members of the Bacillus genus is discussed.

NMR spectroscopy, cell wall, teichoic acids, Bacillus subtilis

NCBI PubMed ID: 19961419
Publication DOI: 10.1134/S0006297909120116
Journal NLM ID: 0370623
Publisher: American Chemical Society
Correspondence: potekchina@hotbox.ru
Institutions: Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
Methods: 13C NMR, 1H NMR, NMR-2D, HF solvolysis, sugar analysis, 31P NMR, NMR-1D, genetic methods, acid degradation

Anionic phosphate-containing cell wall polymers of bacilli are represented by teichoic acids and poly(glycosyl 1-phosphates). Different locations of phosphodiester bonds in the main chain of teichoic acids as well as the nature and combination of the constituent structural elements underlie their structural diversity. Currently, the structures of teichoic acids of bacilli can be classified into three types, viz. poly(polyol phosphates) with glycerol or ribitol as the polyol; poly(glycosylpolyol phosphates), mainly glycerol-containing polymers; and poly(acylglycosylglycerol phosphate), in which the components are covalently linked through glycosidic, phosphodiester, and amide bonds. In addition to teichoic acids, poly(glycosyl 1-phosphates) with mono- and disaccharide residues in the repeating units have been detected in cell walls of several Bacillus subtilis and Bacillus pumilus strains. The known structures of teichoic acids and poly(glycosyl 1-phosphates) of B. subtilis, B. atrophaeus, B. licheniformis, B. pumilus, B. stearothermophilus, B. coagulans, B. cereus as well as oligomers that link the polymers to peptidoglycan are surveyed. The reported data on the structures of phosphate-containing polymers of different strains of B. subtilis suggest heterogeneity of the species and may be of interest for the taxonomy of bacilli to allow differentiation of closely related organisms according to the 'structures and composition of cell wall polymers' criterion.

cell wall, teichoic acids, Bacillus, poly(glycosyl 1-phosphates)

NCBI PubMed ID: 21999535
Journal NLM ID: 0376536
Publisher: Nauka/Interperiodica
Correspondence: potekchina@hotbox.ru
Institutions: Lomonosov Moscow State University, Russia

A comparative study of the structures of carbohydrate-containing cell wall polymers isolated from the strains of the Bacillus subtilis group was performed by means of chemical and NMR spectroscopic meth ods. Polymers of different structure were revealed, namely, 1,3-poly(glycerol phosphates) with β-glucopyranose in Bacillus subtilis strains VKM B-520, VKM B-723, and VKM B-763 (= VKM B-911); 1,5-poly(ribitol phosphate) with α-glucopyranose in B. subtilis strains VKM B-722 and VKM B-922 (the structure is reported for the first time); and simultaneously two polymers in B. subtilis VKM B-761, 1,5-poly(ribitol phosphate) with β-glucopyranose and the disaccharide 1-phosphate polymer with the following repeating unit: -6)-α-D-Galp-(1-P-4)-gB-D-GlcpNAc-(1-, in which the hydroxyls at C3 and C6 of glucosamine residues are partially O-acetylated (the structure is reported for the first time). Heterogeneity of the B. subtilis group is con firmed by variations in the structure and composition of the cell wall polymers. The cell surface polymers are useful for discrimination of closely related bacilli strains and are cell wall marker components that may be an indispensable element of the Bacillus subtilis group taxonomy along with the genomosystematic methods.

NMR spectroscopy, cell wall, teichoic acid, Bacillus subtilis, taxonomy, disaccharide 1-phosphate polymer

Publication DOI: 10.1134/S0026261711010164
Journal NLM ID: 0376652
Publisher: Moskva: Izdatelstvo Nauka
Correspondence: streshinskaya@mail.ru
Institutions: Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia, All-Russian Collection of Microorganisms, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Russia, Institute of Ecology and Genetics of Microorganisms, Ural Division Russian Academy of Sciences Perm Russia
Methods: 13C NMR, 1H NMR, NMR-2D, HF solvolysis, sugar analysis, 31P NMR, paper chromatography, NMR-1D, electrophoresis, RNA sequencing

The lactic acid bacterium Lactobacillus plantarum is capable of producing strain-specific structures of cell wall teichoic acid (WTA), an anionic polysaccharide found in the Gram-positive bacterial cell wall. In this study, we established a rapid, NMR-based procedure to discriminate WTA structures in this species, and applied it to 94 strains of L. plantarum. Six previously reported glycerol- and ribitol-containing WTA subtypes were successfully identified from 78 strains, suggesting that these were the dominant structures. However, the level of structural variety differed markedly among bacterial sources, possibly reflecting differences in strain-level microbial diversity. WTAs from eight strains were not identified based on NMR spectra and were classified into three groups. Structural analysis of a partial degradation product of an unidentified WTA produced by strain TUA 1496L revealed that the WTA was 1-O-β-d-glucosylglycerol. Two-dimensional NMR analysis of the polymer structure showed phosphodiester bonds between C-3 and C-6 of the glycerol and glucose residues, suggesting a polymer structure of 3,6΄-linked poly(1-O-β-d-glucosyl-sn-glycerol phosphate). This is the third WTA backbone structure in L. plantarum, following 3,6΄-linked poly(1-O-α-d-glucosyl-sn-glycerol phosphate) and 1,5-linked poly(ribitol phosphate).

Lactic acid bacteria, cell wall polysaccharide, poly(glycerol phosphate), Lactobacillus plantarum, Poly(ribitol phosphate), cell wall teichoic acid

NCBI PubMed ID: 28175288
Publication DOI: 110.1093/femsle/fnx034
Journal NLM ID: 7705721
Publisher: Blackwell Publishing
Correspondence: satorutomita@affrc.go.jp
Institutions: Food Research Institute, National Agricultural and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan, Department of Fermentation Science, Faculty of Applied Bio-Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan, Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
Methods: 13C NMR, 1H NMR, NMR-2D, PCR, sugar analysis, dephosphorylation, 31P NMR, acid hydrolysis, ion-exchange chromatography, extraction, dialysis, dealanylation