NMR-based identification of cell wall anionic polymers of Spirilliplanes yamanashiensis VKM Ac-1993(T)

The cell wall of Spirilliplanes yamanashiensis VKM Ac-1993(T) contains four anionic polymers, viz., three teichoic acids and a sugar-1-phosphate polym er. The following are the structures of the teichoic acids: poly[-6-beta -D -glucopyranosyl-(1 -->2)-glycerol phosphate] (PI), 1,3-poly(glycerol phosph ate) bearing N-acetyl-alpha -D-glucosamine residues at O-2 (70%) (PII), and poly[-6-N-acetyl-alpha -D-glucosaminyl-(1 -->2)-glycerol phosphate] (PIII) . The repeating unit of the fourth polymer (PIV) has the structure of -6-al pha -D-GlcpNAc-(1 -->6)-alpha -D-GlcpNAc-1-P with a 3-O-methyl-alpha -Dmann opyranosyl residues at position 3 of some 6-phosphorylated N-acetylglucosam ine residues (50%). Polymers PI, PIII and PIN have not hitherto been found in prokaryotic cell walls. (C) 2001 Published by Elsevier Science Ltd.