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  • Title: Cell Wall Glycopolymers of Type Strains from Three Species of the Genus Actinoplanes.
    Author: Streshinskaya GM, Sashkov AS, Tul'skaya EM, Senchenkova SN, Dmitrenok AS, Piskunkova NF, Bueva OV, Evtushenko LI.
    Journal: Biochemistry (Mosc); 2016 Sep; 81(9):999-1012. PubMed ID: 27682172.
    Abstract:
    The structures of cell wall glycopolymers from the type strains of three Actinoplanes species were investigated using chemical methods, NMR spectroscopy, and mass spectrometry. Actinoplanes digitatis VKM Ac-649(T) contains two phosphate-containing glycopolymers: poly(diglycosyl-1-phosphate) →6)-α-D-GlcpNAc-(1-P-6)-α-D-GlcpN-(1→ and teichoic acid →1)-sn-Gro-(3-P-3)-β-[β-D-GlcpNAc-(1→2]-D-Galp-(1→. Two glycopolymers were identified in A. auranticolor VKM Ac-648(T) and A. cyaneus VKM Ac-1095(T): minor polymer - unsubstituted 2,3-poly(glycerol phosphate), widely abundant in actinobacteria (Ac-648(T)), and mannan with trisaccharide repeating unit →2)-α-D-Manp-(1→2)-α-D-Manp-(1→6)-α-D-Manp-(1→ (Ac-1095(T)). In addition, both microorganisms contain a teichuronic acid of unique structure containing a pentasaccharide repeating unit with two residues of glucopyranose and three residues of diaminouronic acids in D-manno- and/or D-gluco-configuration. Each of the strains demonstrates peculiarities in the structure of teichuronic acid with respect to the ratio of diaminouronic acids and availability and location of O-methyl groups in glucopyranose residues. All investigated strains contain a unique set of glycopolymers in their cell walls with structures not described earlier for prokaryotes.
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