title: Structure of the O-polysaccharide of Providencia alcalifaciens O19.
abstract: Studies of the O-polysaccharide chain of the lipopolysaccharide (O-antigen) of Providencia alcalifaciens O19 by sugar and methylation analyses along with NMR spectroscopy, including 2D 1H,1H COSY, TOCSY, NOESY and 1H,13C HSQC experiments, showed that the pentasaccharide repeating unit of the polysaccharide has the following structure: [structure: see text] where Fuc3NAc is 3-acetamido-3,6-dideoxygalactose. The unique structure of the O-antigen and serological data are in consistence with classification of this bacterium in a separate Providencia serogroup.
authors.affiliation: N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia.
authors.forename: Nina A
authors.initials: NA
authors.lastname: Kocharova
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Maszewska
authors.forename: George V
authors.initials: GV
authors.lastname: Zatonsky
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Torzewska
authors.forename: Olga V
authors.initials: OV
authors.lastname: Bystrova
authors.forename: Aleksander S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Yuriy A
authors.initials: YA
authors.lastname: Knirel
authors.forename: Antoni
authors.initials: A
authors.lastname: Rozalski
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens / Q000737:chemistry*; D011532:Providencia / Q000737:chemistry*
chemical_list: D019081:O Antigens