Structure of type 3Gn coaggregation receptor polysaccharide from Streptococcus cristatus LS4.
Carbohydr Res
; 346(11): 1342-6, 2011 Aug 16.
Article
em En
| MEDLINE
| ID: mdl-21601178
ABSTRACT
The presence of a novel coaggregation receptor polysaccharide (RPS) on the dental plaque isolate Streptococcus cristatus LS4 was suggested by this strain's antigenic and coaggregation properties. Examination of RPS isolated from strain LS4 by a combination of 2-dimensional and pseudo 3-dimensional single quantum heteronuclear NMR methods that included detection of (13)C chemical shifts at high resolution revealed the following repeat unit structure â6)-ß-d-Galf-(1â6)-ß-d-GalpNAc-(1â3)-α-d-Galp-(1âPâ6)-α-d-Galp-(1â3)-ß-L-Rhap-(1â4)-ß-d-Glcp-(1â. The identification of this polysaccharide as RPS3Gn, a new structural type, was established by the α-d-Galp-containing epitope of RPS serotype 3 and Gn recognition motif (i.e., ß-d-GalpNAc (1â3)-α-d-Galp) for coaggregation with other bacteria.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polissacarídeos
/
Streptococcus
Idioma:
En
Revista:
Carbohydr Res
Ano de publicação:
2011
Tipo de documento:
Article