A new neutral polymer from the cell wall of actinomycete Kineosporia aurantiaca VKM Ac-702T.
The major cell wall polymer of Kineosporia aurantiaca VKM Ac-702T a representative of the suborder Frankineae, is a galactomannan with a repeating unit of the following structure: -->3)-beta-D-Galp-(1-->6)-beta-D-Manp-(1-->4)-beta-D-Manp-(1-->3)-beta-D-Galp-(1-->4)-beta-D-Manp-(1-->4)-beta-D-Manp-(1--> that has not been reported so far. This was established using chemical degradation methods and NMR spectroscopy. The polysaccharide identified in the present study provides the second example of neutral galactomannans in actinomycete cell walls. The cell wall of K. aurantiaca VKM Ac-702T also contains a minor teichoic acid, viz., 1,3-poly(glycerol phosphate) partially substituted with alpha-glucosamine residues, only part of which are N-acetylated.
Tul'skaya
Elena M
EM
School of Biology, M. V. Lomonosov Moscow State University, Moscow 119899, Russia. em_tulskaya@mail.ru
Senchenkova
Sof'ya N
SN
Evtushenko
Ludmila I
LI
Shashkov
Alexander S
AS
Naumova
Irina B
IB
D000107:Acetylation; D000192:Actinomycetales / Q000737:chemistry* / Q000145:classification*; D001704:Biopolymers / Q000737:chemistry*; D002473:Cell Wall / Q000737:chemistry*; D005690:Galactose / Q000031:analogs & derivatives; D009682:Magnetic Resonance Spectroscopy; D008351:Mannans / Q000737:chemistry*
D001704:Biopolymers; D008351:Mannans; C012990:galactomannan; D005690:Galactose