Extracellular Oligosaccharides and Low-Mr Polysaccharides Containing (1.2)- -D-Glucosidic Linkages from Strains of Xanthomonas, Escherichia coli and Klebsiella pneumoniae
- 1 September 1986
- journal article
- research article
- Published by Microbiology Society in Microbiology
- Vol. 132 (9) , 2443-2452
- https://doi.org/10.1099/00221287-132-9-2443
Abstract
One strain each of Xanthomonas campestris and ''Xanthomonas phaseoli'', three strains of ''Xanthomonas oryzae'', and five strains each of Escherichia coli and Klebsiella pneumoniae were found to produce a mixture of (1 .fwdarw. 2)-.beta.-D-gluco-oligosacchrides and/or low-Mr (1 .fwdarw. 2)-.beta.-D-glucans in their culture media. The saccharides from the strains of Xanthomonas were all composed of unbranched, linear (1 .fwdarw. 2)-.beta.-D-glucosaccharides with degrees of polymerization (DPs) of 8 to about 20, and a cyclic (1 .fwdarw. 2)-.beta.-D-glucan (DP16) containing one (1 .fwdarw. 6)-linkage and one .alpha.-linkage. The saccharides produced by the five strains of E. coli and four strains of K. pneumoniae were glucans with branches at O-6, and DPs of 10 to 15, whereas one strain of K. pneumoniae produced unbranched linear (1 .fwdarw. 2)-.beta.-D-glucosaccharides with DPs of 6 to about 20.Keywords
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