title: Isolation using triflic acid solvolysis and identification of N(epsilon)-[(R)-1-carboxyethyl]-N(alpha)-(D-galacturonoyl)-L-lysine as a component of the O-specific polysaccharide of Proteus mirabilis O13.
abstract: An amino acid was released from the O-specific polysaccharide of Proteus mirabilis O13 by acid hydrolysis and identified as N(epsilon)-[(R)-1-carboxyethyl]-L-lysine by comparison with the authentic sample. An amide of this amino acid with D-galacturonic acid was isolated from the polysaccharide by solvolysis with anhydrous trifluoromethanesulfonic (triflic) acid and characterised by 1H and 13C NMR spectroscopy. These and published data enabled determination of the full structure of the repeating unit of the polysaccharide.
authors.affiliation: N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow.
authors.forename: A V
authors.initials: AV
authors.lastname: Perepelov
authors.forename: S N
authors.initials: SN
authors.lastname: Senchenkova
authors.forename: M
authors.initials: M
authors.lastname: Cedzynski
authors.forename: A
authors.initials: A
authors.lastname: Ziolkowski
authors.forename: E V
authors.initials: EV
authors.lastname: Vinogradov
authors.forename: W
authors.initials: W
authors.lastname: Kaca
authors.forename: A S
authors.initials: AS
authors.lastname: Shashkov
authors.forename: Y A
authors.initials: YA
authors.lastname: Knirel
mesh_terms: D000577:Amides / Q000737:chemistry / Q000302:isolation & purification; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006603:Hexuronic Acids / Q000737:chemistry / Q000302:isolation & purification; D006801:Humans; D006868:Hydrolysis; D008239:Lysine / Q000031:analogs & derivatives / Q000032:analysis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008698:Mesylates / Q000737:chemistry*; D008969:Molecular Sequence Data; D009005:Monosaccharides / Q000032:analysis* / Q000737:chemistry; D019081:O Antigens / Q000737:chemistry*; D011513:Proteus mirabilis / Q000737:chemistry*
chemical_list: D000577:Amides; D006603:Hexuronic Acids; D008698:Mesylates; D009005:Monosaccharides; C420665:N(epsilon)-(1-carboxyethyl)-N-(galacturonoyl)-lysine; D019081:O Antigens; C007819:galacturonic acid; C012077:trifluoromethanesulfonic acid; D008239:Lysine