Structural characterization of an O-linked tetrasaccharide from Pseudomonas syringae pv. tabaci flagellin

Tomoyuki Konishi, Fumiko Taguchi, Masako Iwaki, Mayumi Ohnishi-Kameyama, Masanobu Yamamoto, Ikuko Maeda, Yoshihiro Nishida, Yuki Ichinose, Mitsuru Yoshida, Tadashi Ishii

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The flagellin of Pseudomonas syringae pv. tabaci is a glycoprotein that contains O-linked oligosaccharides composed of rhamnosyl and 4,6-dideoxy-4-(3-hydroxybutanamido)-2-O-methylglucosyl residues. These O-linked glycans are released by hydrazinolysis and then labeled at their reducing ends with 2-aminopyridine (PA). A PA-labeled trisaccharide and a PA-labeled tetrasaccharide are isolated by normal-phase high-performance liquid chromatography. These oligosaccharides are structurally characterized using mass spectrometry and NMR spectroscopy. Our data show that P. syringae pv. tabaci flagellin is glycosylated with a tetrasaccharide, 4,6-dideoxy-4-(3-hydroxybutanamido)-2-O-methyl-Glcp-(1→3)-α-l-Rhap-(1→2)-α-l-Rhap-(1→2)-α-l-Rha-(1→, as well a trisaccharide, 4,6-dideoxy-4-(3-hydroxybutanamido)-2-O-methyl-Glcp-(1→3)-α-l-Rhap-(1→2)-α-l-Rha-(1→, which was identified in a previous study.

Original languageEnglish
Pages (from-to)2250-2254
Number of pages5
JournalCarbohydrate Research
Issue number16
Publication statusPublished - Nov 2 2009


  • Bacteria
  • Flagellin glycosylation
  • NMR
  • O-linked oligosaccharides
  • Pseudomonas syringae
  • Structure

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry


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