Home |  English version |  Mappa |  Commenti |  Sondaggio |  Staff |  Contattaci Cerca nel sito  
Istituto di ricerche sulla combustione
Soppresso il 01/10/2020

Torna all'elenco Contributi in rivista anno 2020

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Biopolymer Skeleton Produced by Rhizobium radiobacter: Stoichiometric Alternation of Glycosidic and Amidic Bonds in the Lipopolysaccharide O-Antigen

Anno di pubblicazione: 2020

Formato: Elettronico

Autori: Speciale I.; Di Lorenzo F.; Gargiulo V.; Erbs G.; Newman M.-A.; Molinaro A.; De Castro C.

Affiliazioni autori: Department of Chemical Sciences, University of Napoli, Via Cintia 4, Napoli, 80126, Department of Chemical Sciences, University of Napoli, Via Cintia 4, 80126, Napoli, Italy, , Italy; Institute for Research on Combustion (IRC), CNR, Naples (Italy), Piazzale Vincenzo Tecchio 80, Napoli, 80126, Institute for Research on Combustion (IRC), CNR, Naples (Italy), Piazzale Vincenzo Tecchio 80, 80126, Napoli, Italy, , Italy; Department of Health Technology, Technical University of Denmark, Kemitorvet, Lyngby, 2800 Kgs., Department of Health Technology, Technical University of Denmark, Kemitorvet, 2800 Kgs., Lyngby, Denmark, , Denmark; Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg, 1871, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark, , Denmark; Department of Agricultural Sciences, University of Napoli, Via UniversitÓ 100, Portici (NA), 80055, Department of Agricultural Sciences, University of Napoli, Via UniversitÓ 100, 80055, Portici (NA), Italy, , Italy

Autori CNR:

  • VALENTINA GARGIULO

Lingua: inglese

Abstract: The lipopolysaccharide (LPS) O-antigen structure of the plant pathogen Rhizobium radiobacter strain TT9 and its possible role in a plant-microbe interaction was investigated. The analyses disclosed the presence of two O-antigens, named Poly1 and Poly2. The repetitive unit of Poly2 constitutes a 4-?-l-rhamnose linked to a 3-?-d-fucose residue. Surprisingly, Poly1 turned out to be a novel type of biopolymer in which the repeating unit is formed by a monosaccharide and an amino-acid derivative, so that the polymer has alternating glycosidic and amidic bonds joining the two units: 4-amino-4-deoxy-3-O-methyl-d-fucose and (2?R,3?R,4?S)-N-methyl-3?,4?-dihydroxy-3?-methyl-5?-oxoproline). Differently from the O-antigens of LPSs from other pathogenic Gram-negative bacteria, these two O-antigens do not activate the oxidative burst, an early innate immune response in the model plant Arabidopsis thaliana, explaining at least in part the ability of this R. radiobacter strain to avoid host defenses during a plant infection process.

Lingua abstract: inglese

Pagine da: 6368

Pagine a: 6374

Rivista:

Angewandte Chemie Wiley-VCH.
Paese di pubblicazione: Germania
Lingua: inglese
ISSN: 1433-7851

Numero volume: 59

DOI: 10.1002/anie.201914053

Stato della pubblicazione: Published version

Indicizzato da: Scopus [2-s2.0-85081208737]

Parole chiave:

  • Lipopolysaccharide
  • Rhizobium radiobacter
  • NMR
  • Biopolymer

URL: http://www.scopus.com/record/display.url?eid=2-s2.0-85081208737&origin=inward

Strutture CNR:

 
Torna indietro Richiedi modifiche Invia per email Stampa
Home Il CNR  |  I servizi News |   Eventi | Istituti |  Focus