Extracellular polysaccharide of Erwinia chrysanthemi Ech6.
Many strains of Erwinia chrysanthemi, which are Gram-negative bacterial phytopathogens, produce copious amounts of extracellular polysaccharides. The extracellular polysaccharide from E. chrysanthemi pv. zeae strain SR 260, a phytopathogen of corn, is a branched-chain glucomannorhamnan of proven structure (Gray et al., Carbohydr. Res. 1993, 245, 271-287). The extracellular polysaccharide from E. chrysanthemi Ech6 is different, containing no rhamnose or mannose. It is composed of L-fucose, D-galactose, D-glucose and D-glucuronic acid in the ratio 2:2:1:1. The structure of the polysaccharide is as follows: [sequence: see text]
Yang
B Y
BY
Department of Biochemistry, College of Medicine, University of Iowa, Iowa City 52242.
Gray
J S
JS
Montgomery
R
R
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D016974:Dickeya chrysanthemi / Q000145:classification / Q000378:metabolism* / Q000472:pathogenicity; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry / Q000302:isolation & purification*; D011198:Solanum tuberosum / Q000382:microbiology; D013045:Species Specificity
D011135:Polysaccharides, Bacterial; C093301:extracellular polysaccharide 6