title: Structural studies of an exopolysaccharide produced by Streptococcus thermophilus THS.
abstract: The structure of an extracellular polysaccharide (EPS) from Streptococcus thermophilus THS has been determined. A combination of component analysis, methylation analysis and NMR spectroscopy shows that the polysaccharide is composed of pentasaccharide repeating units. Sequential information was obtained by two-dimensional (1)H,(1)H-NOESY and (1)H,(13)C-HMBC NMR experiments. NMR data indicate different mobility within the EPS with a stiffer backbone and a more flexible side-chain.
authors.affiliation: Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden.
authors.forename: Eva-Lisa
authors.initials: EL
authors.lastname: Nordmark
authors.forename: Zhennai
authors.initials: Z
authors.lastname: Yang
authors.forename: Eine
authors.initials: E
authors.lastname: Huttunen
authors.forename: Göran
authors.initials: G
authors.lastname: Widmalm
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis* / Q000737:chemistry* / Q000302:isolation & purification; D048249:Streptococcus thermophilus / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism
chemical_list: D011135:Polysaccharides, Bacterial