Structural study of an exocellular polysaccharide of Bacillus circulans.
Bacillus circulans, a soil bacterium, produced an exocellular polysaccharide of high viscosity. On the basis of the results of methylation analysis, mild acid hydrolysis, and 1D and 2D 1H-NMR spectroscopy, it was concluded that the polysaccharide has a basic repeating unit composed of beta-L-rhamnopyranose, alpha-D-mannopyranose, alpha-D-galactopyranose, and alpha-D-glucopyranuronic acid with the following structure. [symbol: see text]
Isobe
Y
Y
Department of Food Science and Nutrition, Nara Women's University, Japan.
Yokoigawa
K
K
Kawai
H
H
Sone
Y
Y
D001407:Bacillus / Q000378:metabolism*; D002240:Carbohydrate Sequence; D003470:Culture Media; D005690:Galactose / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D005965:Glucuronates / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D020723:Glucuronic Acid; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008358:Mannose / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D008745:Methylation; D008969:Molecular Sequence Data; D012210:Rhamnose / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism; D012988:Soil Microbiology
D003470:Culture Media; D005965:Glucuronates; D020723:Glucuronic Acid; D008358:Mannose; D012210:Rhamnose; D005690:Galactose