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1. (Article ID: 4398)
 
Streshinskaya GM, Shashkov AS, Kozlova YI, Tul'skaya EM, Kudryashova EB, Senchenkova SN, Ariskina EV, Evtushenko LI, Potekhina NV
Cell wall teichoic acids of Bacillus licheniformis VKM B-511T, Bacillus pumilus VKM B-508T, and other strains previously assigned to Bacillus pumilus
Mikrobiologiia = Microbiology [Russian] 81(4) (2012) 425-434
 

The teichoic acids (TAs) of type strains, viz. Bacillus licheniformis VKM B-511T and Bacillus pumilus VKM B-508T, as well as phylogenetically close bacteria VKM B-424, VKM B-1554, and VKM B-711 previously assigned to Bacillus pumilus on the basis of morphological, physiological, and biochemical properties, were investigated. Three polymers were found in the cell wall of each of the 5 strains under study. Strains VKM B-508T, VKM B-424, and VKM B-1554 contained polymers of the same core: unsubstituted 1,3-poly(glycerol phosphate) (TA I) and 1,3-poly(glycerol phosphate) with O-D-Ala and N-acetyl-a-D-glucosamine substituents (TA II and TA III', respectively). The cell walls of two remaining strains contained TA I, TA II, and a poly(glycosylpolyol phosphate) with the following structure of repeating units: -6)-a-D-GlcpNAc(1-1)-snGro-(3-P-(TA III'') in 'Bacillus pumilus' VKM B-711 (100% 16S rRNA gene similarity with the type strain of Bacillus safensis) and -6)-a-D-Galp-(1-2)-snGro-(3-P-(TA III''') in Bacillus licheniformis VKM B-511T. The simultaneous presence of three different TAs in the cell walls was confirmed by the NMR spectroscopic DOSY methods. The structure of the polymers and localization of O-D-Ala residues were investigated by the chemical and NMR spectroscopic methods.

NMR spectroscopy, teichoic acid, Bacillus licheniformis, taxonomy, Bacillus pumilus

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