Identification of the group G antigen of Lactobacilli.
The group G antigen of lactobacilli was identified as a negatively-charged cell wall polysaccharide. The components of the preparation isolated from cell walls of L. salivarius subsp. salivarius by mild acid hydrolysis were glucose, galactose and lesser amounts of rhamnose, N-acetylglucosamine and phosphate. Quantitative serological studies on acid-released polysaccharide and enzymic lysates of cell walls showed that rhammose was the immunodominant component. The antigen was also detected in L. salivarius subsp. salicinus but not in a recent isolate of L. salivarius, strain IV CL-37.
D002473:Cell Wall / Q000032:analysis; D000939:Epitopes; D007778:Lactobacillus / Q000145:classification / Q000276:immunology*; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D011233:Precipitin Tests; D012703:Serotyping
D000939:Epitopes; D011135:Polysaccharides, Bacterial