Structure of the Heptose Region of Lipopolysaccharies from Rhodospirillum Tenue
Overview
Affiliations
There is a common structure (core region) in the lipopolysaccharides of Rhodospirillum tenue. It is composed of a branched trisaccharide of L-glycero-D-mannoheptose (and of 2-keto-3-deoxyoctonate), as revealed by methylation analyses of degraded polysaccharides of four different R. tenue strains. The structure is similar or might even be identical to the inner core of enterobacterial O antigens. In addition, each of the four R. tenue lipopolysaccharides contains a strain-specific region that consists of heptose(s) (L-glycero-D-mannoheptose or D-glycero-D-mannoheptose or both) or hexoses. There is a partial substitution of the core region and the strain-specific region by phosphorus, showing microheterogeneity.
Lipopolysaccharides of two strains of the phototrophic bacterium Rhodopseudomonas capsulata.
Omar A, Flammann H, Borowiak D, Weckesser J Arch Microbiol. 1983; 134(3):212-6.
PMID: 6615126 DOI: 10.1007/BF00407760.