Structure of an acidic O-specific polysaccharide from marine bacterium Shewanella fidelis KMM 3582T containing Nε-[(S)-1- carboxyethyl]-Nα-(D-galacturonoyl)-L-lysine

  • Michelle Kilcoyne
  • , Andrei Perepelov
  • , Alexander S. Shashkov
  • , Evgeny L. Nazarenko
  • , Elena P. Ivanova
  • , Natalya M. Gorshkova
  • , Raisa P. Gorshkova
  • , Angela V. Savage

Research output: Contribution to a Journal (Peer & Non Peer)Articlepeer-review

6 Citations (Scopus)

Abstract

The O-specific polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of the marine bacterium Shewanella fidelis type strain KMM 3582T and studied by sugar analysis along with 1H and 13C NMR spectroscopy including one-dimensional NOE in difference mode and two-dimensional experiments. The polysaccharide was found to consist of linear tetrasaccharide repeating units containing Nε-[(S)-1- carboxyethyl]-Nα-(D-galacturonoyl)-L-lysine and having the following structure: The amide of D-galacturonic acid with Nε- [(S)-1-carboxyethyl]-L-lysine ('alaninolysine', 2S,8S-AlaLys) was found for the first time in nature as a component of the O-specific polysaccharide of Providencia rustigianii O14 (Carbohydr. Res. 2003, 338, 1009-1016).

Original languageEnglish
Pages (from-to)1655-1661
Number of pages7
JournalCarbohydrate Research
Volume339
Issue number9
DOIs
Publication statusPublished - 22 Jun 2004

Keywords

  • Alaninolysine
  • Bacterial polysaccharide
  • Lipopolysaccharide
  • Marine bacterium
  • NMR spectroscopy
  • Shewanella fidelis
  • Structure

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