title: Structural characterization and rheological properties of an extracellular glucuronan produced by a Rhizobium meliloti M5N1 mutant strain.
abstract: The mutant strain M5N1 C.S. (NCIMB 40472) of Rhizobium meliloti M5N1 is able to produce during fermentation a partially acetylated extracellular (1-->4)-beta-D-glucuronan. At low concentration (1 g.l-1), in the presence of monovalent cations, this new glucuronate behaves as a thickening agent, whereas at higher concentration a thermoreversible gel is obtained. With such divalent cations as Ca2+, a thermally stable gel can be formed.
authors.affiliation: Centre de Recherches sur les Macromolécules Végétales (CNRS), Grenoble, France.
authors.forename: A
authors.initials: A
authors.lastname: Heyraud
authors.forename: J
authors.initials: J
authors.lastname: Courtois
authors.forename: L
authors.initials: L
authors.lastname: Dantas
authors.forename: P
authors.initials: P
authors.lastname: Colin-Morel
authors.forename: B
authors.initials: B
authors.lastname: Courtois
mesh_terms: D002240:Carbohydrate Sequence; D002480:Cellulase / Q000378:metabolism; D005965:Glucuronates / Q000737:chemistry* / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000378:metabolism; D012212:Rheology; D016962:Sinorhizobium meliloti / Q000737:chemistry* / Q000235:genetics; D000516:alpha-Amylases / Q000378:metabolism
chemical_list: D005965:Glucuronates; D011135:Polysaccharides, Bacterial; D000516:alpha-Amylases; D002480:Cellulase