A minor oligosaccharide fraction was isolated after complete de-acylation of the lipooligosaccharide extracted from Pseudomonas stutzeri OX1. The full structure of this oligosaccharide was obtained by chemical degradation, NMR spectroscopy and MALDI-TOF MS spectrometry. These experiments showed the presence of two novel oligosaccharides (OS1 and OS2): [structure: see text] where R=(S)-Pyr(-->4,6) in OS1 and alpha-Rha-(1-->3) in OS2. All sugars are D-pyranoses, except Rha, which is L-pyranose. Hep is L-glycero-D-manno-heptose, Kdo is 3-deoxy-D-manno-oct-2-ulosonic acid, Pyr is pyruvic acid, P is phosphate.
STRUCTURE OF MINOR OLIGOSACCHARIDES FROM THE LIPOPOLYSACCHARIDE FRACTION FROM PSEUDOMONAS STUTZERI OXI / Leone, Serena; V., Izzo; A., Silipo; L., Sturiale; D., Garozzo; Lanzetta, Rosa; Parrilli, Michelangelo; Molinaro, Antonio; DI DONATO, Alberto. - In: CARBOHYDRATE RESEARCH. - ISSN 0008-6215. - STAMPA. - 339:(2004), pp. 2657-2665.
STRUCTURE OF MINOR OLIGOSACCHARIDES FROM THE LIPOPOLYSACCHARIDE FRACTION FROM PSEUDOMONAS STUTZERI OXI
LEONE, SERENA;LANZETTA, ROSA;PARRILLI, MICHELANGELO;MOLINARO, ANTONIO;DI DONATO, ALBERTO
2004
Abstract
A minor oligosaccharide fraction was isolated after complete de-acylation of the lipooligosaccharide extracted from Pseudomonas stutzeri OX1. The full structure of this oligosaccharide was obtained by chemical degradation, NMR spectroscopy and MALDI-TOF MS spectrometry. These experiments showed the presence of two novel oligosaccharides (OS1 and OS2): [structure: see text] where R=(S)-Pyr(-->4,6) in OS1 and alpha-Rha-(1-->3) in OS2. All sugars are D-pyranoses, except Rha, which is L-pyranose. Hep is L-glycero-D-manno-heptose, Kdo is 3-deoxy-D-manno-oct-2-ulosonic acid, Pyr is pyruvic acid, P is phosphate.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
