A polymer with a backbone of 3-deoxy-D-glycero-D-galacto-non-2-ulopyranosonic acid, a teichuronic acid, and a beta-glucosylated ribitol teichoic acid in the cell wall of plant pathogenic Streptomyces sp. VKM Ac-2124.
Structures of cell wall anionic polymers of the strain Streptomyces sp. VKM Ac-2124, a causative agent of potato scab, which is phylogenetically the closest to plant pathogenic species S. setonii and S. caviscabies, were studied. The strain contains three anionic glycopolymers, viz., a teichuronic acid with a disaccharide repeating unit -->6)-alpha-d-Glcp-(1-->4)-beta-d-ManpNAc3NAcA-(1-->, a beta-glucosylated polymer of 3-deoxy-d-glycero-d-galacto-non-2-ulopyranosonic acid (Kdn), and a beta-glucosylated 1,5-poly(ribitol phosphate). The strain studied is the second representative of plant pathogenic streptomycetes inducing potato scab disease, the cell wall anionic polymers of which were shown to contain a Kdn-polymer. Presumably, the presence of Kdn-containing structures in the surface regions of pathogens is essential for their efficient attachment to host plant cells.
Shashkov
Alexander S
AS
N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia.
Kosmachevskaya
Larisa N
LN
Streshinskaya
Galina M
GM
Evtushenko
Lyudmila I
LI
Bueva
Olga V
OV
Denisenko
Viktor A
VA
Naumova
Irina B
IB
Stackebrandt
Erko
E
D002473:Cell Wall / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011108:Polymers / Q000737:chemistry*; D017434:Protein Structure, Tertiary; D013302:Streptomyces / Q000378:metabolism*; D013400:Sugar Acids / Q000737:chemistry*; D013682:Teichoic Acids / Q000737:chemistry*
D011108:Polymers; D013400:Sugar Acids; D013682:Teichoic Acids; C044340:ribitol teichoic acid; C050008:3-deoxyglycero-galacto-nonulosonic acid