New structures and composition of cell wall teichoic acids from Nocardiopsis synnemataformans, Nocardiopsis halotolerans, Nocardiopsis composta and Nocardiopsis metallicus: a chemotaxonomic valueстатья

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Дата последнего поиска статьи во внешних источниках: 17 декабря 2014 г.

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[1] New structures and composition of cell wall teichoic acids from nocardiopsis synnemataformans, nocardiopsis halotolerans, nocardiopsis composta and nocardiopsis metallicus: a chemotaxonomic value / E. M. Tul’skaya, A. S. Shashkov, G. M. Streshinskaya et al. // Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology. — 2014. — Vol. 106, no. 6. — P. 1105–1117. The structure of cell wall teichoic acids (TA) from some species of Nocardiopsis genues were established by chemical and NMR spectroscopic methods. Each of the cell walls of N. synnemataformans VKM Ac-2518T and N. halotolerans VKM Ac-2519Т contains two TA at a time with unique structures – poly(polyol phosphate-glycosylpolyol phosphate) – belonging to the type IV TA. In both organisms, the minor TA have identical structures: poly(glycerol phosphate-N-acetyl--galactosaminylglycerol phosphate) with the phosphodiester bond between C-3 of glycerol and C-4 of the amino sugar. This structure is found for the first time. The major TA of N. halotolerans has a hitherto unknown structure: poly(glycerol phosphate-N-acetyl--galactosaminylglycerol phosphate), N-acetyl--galactosamine being acetalated with pyruvic acid at positions 4,6. The major TA of N. synnemataformans is a poly(glycerol phosphate-N-acetyl--galactosaminylglycerol phosphate) with the phosphodiester bond between C-3 of glycerol and C-3 of the amino sugar. The cell walls of N. composta VKM Ac-2520 and N. composta VKM Ac-2521T contain only one TA, viz., 1,3-poly(glycerol phosphate) partially substituted with N-acetyl-α-glucosamine. The cell wall of N. metallicus VKM Ac-2522T contains two TA. The major TA is 1,5-poly(ribitol phosphate), each ribitol unit carrying a pyruvate ketal group at positions 2,4. The structure of the minor TA is the same as that of N. composta. The results presented correlate well with the phylogenetic grouping of strains and confirm the species and strain specific features of cell wall TA in Nocardiopsis. [ DOI ]

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