1887

Abstract

SUMMARY: The extracellular sheath was isolated from cultures of a unicellular diazotrophic cyanobacterium, ATCC 27152. Chemical analysis of lyophilized cell-free preparations indicated that the sheath was composed of an acidic heteropolysaccharide containing the neutral sugars rhamnose, 2--methylxylose, xylose, mannose, galactose and glucose, and the uronic acids mannuronic, glucuronic and galacturonic acid. Protein, pyruvic acid and -acetyl and sulphate groups were also detected. Quantitative differences in the carbohydrate and protein content of the sheath were observed between material collected from cultures grown with and without a source of combined nitrogen. The extent to which the external layers bound cadmium ions was affected by these differences.

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/content/journal/micro/10.1099/00221287-133-12-3331
1987-12-01
2019-11-14
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-133-12-3331
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