title: The O-antigen of Salmonella enterica O13 and its relation to the O-antigen of Escherichia coli O127.
abstract: The following structure of the O-polysaccharide (O-antigen) of Salmonella enterica O13 was established by chemical analyses along with 2D (1)H and (13)C NMR spectroscopy: -->2)-alpha-l-Fucp-(1-->2)-beta-d-Galp-(1-->3)-alpha-d-GalpNAc-(1-->3)-alpha-d-GlcpNAc-(1--> The O-antigen of S. enterica O13 was found to be closely related to that of Escherichia coli O127, which differs only in the presence of a GalNAc residue in place of the GlcNAc residue and O-acetylation. The location of the O-acetyl groups in the E. coli O127 polysaccharide was determined. The structures of the O-polysaccharides studied are in agreement with the DNA sequence of the O-antigen gene clusters of S. enterica O13 and E. coli O127 reported earlier.
authors.affiliation: N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation. perepel@ioc.ac.ru
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Perepelov
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Sof'ya N
authors.initials: SN
authors.lastname: Senchenkova
authors.forename: Sergei D
authors.initials: SD
authors.lastname: Shevelev
authors.forename: Lu
authors.initials: L
authors.lastname: Feng
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Yuriy A
authors.initials: YA
authors.lastname: Knirel
mesh_terms: D002240:Carbohydrate Sequence; D002247:Carbon Isotopes; D004926:Escherichia coli / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D019081:O Antigens / Q000737:chemistry*; D011522:Protons; D019779:Salmonella enterica / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D019081:O Antigens; D011522:Protons