ABSTRACT
On the basis of NMR studies and analysis of the products of acid and alkaline hydrolyses the following structures were established for the repeating units of poly(arabitol phosphate) teichoic acid: alpha-6-deoxy-L-Talp-(1-->3)-beta-D-GLcpNAc-(1-->2)-alpha-L-Rha p-(1-->4(2)-D- Arabitol-PO4 and beta-D-GlcpNAc-(1-->2)-alpha-L-Rhap-(1-->4(2)-D-arabitol-PO4. The molar ratio of these units is about 1.2:1.0, respectively. Poly(arabitol phosphate) teichoic acid is here reported in bacterial cells walls for the first time.
Subject(s)
Actinomycetales/chemistry , Cell Wall/chemistry , Teichoic Acids/chemistry , Carbohydrate Sequence , Magnetic Resonance Spectroscopy , Molecular Sequence Data , Repetitive Sequences, Nucleic Acid , Teichoic Acids/analysisABSTRACT
Cell walls of Agromyces fucosus ssp. hippuratus VKM Ac-1352T and VKM Ac-1353 contain teichoic acids of identical structure. The polymer is of a 1.5-poly(ribitol phosphate) type. Each ribitol phosphate residue is substituted at C-4(2) by tetrasaccharide having the following structure: alpha-L-Rhap(1-->3)-alpha-L-Rhap-(1-->3)-beta-D-GlcpNAc-(1-- >2)- alpha-L-Rhap-(1-->. The teichoic acid chain is made up by 12-13 repeating units. No structurally identical polymer of the procaryotic cell wall has so far been reported.
