title: New cell wall glycopolymers of the representatives of the genus Kribbella.
abstract: Each of the cell walls of four representatives of the genus Kribbella (order Actinomycetales; suborder Propionibacterineae; family Nocardioidaceae) contains a neutral polysaccharide and an acidic polysaccharide with unusual structures. Common to all four strains studied is a mannan with the following repeating unit: [structure: see text]. In the cell wall of the strain VKM Ac-2541, a teichulosonic acid was identified with a monosaccharide component that has not hitherto been found in Gram-positive bacteria, viz., pseudaminic acid, and an unusual linkage type in the polymeric chain, [structure: see text] where R=capital EN, Cyrillic (45%), alpha-D-Galp3OMe (37%) or alpha-D-Galp2,3OMe (18%). The anionic cell wall components of three other strains are represented by teichuronic acids with a rare constituent, viz., a diaminosugar, 2,3-diacetamido-2,3-dideoxyglucopyranose. The structures of their repeating units differ in the nature of the acidic components: -->4)-beta-D-Manp2,3NAcA-(1-->6)-alpha-D-Glcp2,3NAc-(1--> (VKM capital A, Cyrillicsmall es, Cyrillic-2538 and VKM capital A, Cyrillicsmall es, Cyrillic-2540) and -->4)-beta-D-ManpNAcA-(1-->6)-alpha-D-Glcp2,3NAc-(1--> (VKM capital A, Cyrillicsmall es, Cyrillic-2539). The structures of all the glycopolymers were established by chemical and NMR spectroscopic methods; they are identified in Gram-positive bacteria for the first time.
authors.affiliation: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect, 47, Moscow 119991, Russian Federation.
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Elena M
authors.initials: EM
authors.lastname: Tul'skaya
authors.forename: Galina M
authors.initials: GM
authors.lastname: Streshinskaya
authors.forename: Sof'ya N
authors.initials: SN
authors.lastname: Senchenkova
authors.forename: Alexander N
authors.initials: AN
authors.lastname: Avtukh
authors.forename: Ludmila I
authors.initials: LI
authors.lastname: Evtushenko
mesh_terms: D000192:Actinomycetales / Q000166:cytology*; D002240:Carbohydrate Sequence; D002473:Cell Wall / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008351:Mannans / Q000737:chemistry; D008969:Molecular Sequence Data; D011134:Polysaccharides / Q000737:chemistry*; D013400:Sugar Acids / Q000737:chemistry; D014574:Uronic Acids / Q000737:chemistry
chemical_list: C513444:5,7-diacetamido-3,5,7,9-tetradeoxynonulosonic acid; D008351:Mannans; D011134:Polysaccharides; D013400:Sugar Acids; D014574:Uronic Acids; C010788:teichuronic acid