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1. (Article ID: 4050)
 
Knirel YA, Shevelev SD, Perepelov AV
Higher aldulosonic acids: components of bacterial glycans
Mendeleev Communications 21(4) (2011) 173-182
 

Recent data on the natural occurrence, chemistry, and biochemistry of C8 and C9 aldulosonic acids (3-deoxy-d-manno-oct-2-ulosonic acid, sialic acids, N-acyl derivatives of 5,7-diamino-3,5,7,9-tetradeoxynon-2-ulosonic acids, and some others) as well as on the structures and biological significance of bacterial glycans containing these higher acidic monosaccharides are summarized.

structure, Bacterial, glycan, aldulosonic acid, higher acidic monosaccharides, sialic acids

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2. (Article ID: 5034)
 
Potekhina NV, Arbatsky NP, Shashkov AS, Dmitrenok AS, Senchenkova SN, Dorofeeva LV, Evtushenko LI
Novel teichulosonic acid and glycosyl 1-phosphate polymers from the cell walls of strains VKM Ac-2549 and VKM Ac-2550 phylogenetically close to Arthrobacter crystallopoietes
Carbohydrate Research 451 (2017) 38-41
 

Novel teichulosonic acid with the repeating unit →6)-β-D-GlcpNAc-(1→8)-α-Kdn-(2→ has been found in the cell walls of two Arthrobacter strains, VKM Ac-2549 and VKM Ac-2550. The teichulosonic acid was revealed in representatives of the genus Arthrobacter for the first time. Two other polymers identified in the above strains were poly(monoglycosyl 1-phosphate) and poly(diglycosyl 1-phosphate) of hitherto unknown structures, i.e., -6)-α-D-GalpNAc-(1-P-, and -6)-β-D-GlcpNAc-(1→3)-α-D-Galp-(1-P-. The structures of all three polymers were established by using chemical, NMR spectroscopic and ESI-MS methods. The strains studied in this work differ in the cell wall composition from the type strain of phylogenetically closely related species A. crystallopoietes which was reported to contain a teichoic acid and supposedly had a glycosyl 1-phosphate polymer.

Kdn, Arthrobacter, teichulosonic acid, glycosyl 1-phosphate polymer, Cell wall glycopolymer

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