Arthrobacter polysaccharides

Several natural polysaccharides are esterified with sulfuric or phosphoric acid. Sulfated bacterial polysaccharides are not, however, very common. One example is a polysaccharide from an Arthrobacter species, which is most probably linked to the proteoglycan and contains sulfated D-galactopy-ranosyl residues. An extracellular polysaccharide from a Phormidium spe-... 

The extracellular polysaccharide isolated from Arthrobacter stabilis NRRL B3225 contains residues of D-glucose, D-galactose, pyruvate, succinate, and acetate (in molar ratio 6 3 1 1 1.5). The viscosity of aqueous salt-free solutions is relatively low, but atypical of anionic polysaccharides, increasing rapidly in the presence of salts, acids, and alkali. 

Occurs in polysaccharides of Arthrobacter viscosus and in partial hydrol. of a-tomatine. 

C18H30O17 518.425 Constit. of the extracellular bacterial polysaccharide from Arthrobacter viscosus (NRRL B-1973). 

The conformational behaviour of the extracellular gel-forming polysaccharides from Arthrobacter species has been investigated by n.m.r. relaxation and optical rotation techniques. ... 

Extracellular polysaccharides composed of o-glucose, pyruvic acid, and succinic acid have been isolated from a number of strains of Agrobacterium. The conformational behaviour of the extracellular gel-forming polysaccharides from Arthrobacter species has been investigated by nuclear magnetic resonance relaxation and optical rotation techniques. " A number of the polysaccharides studied showed evidence of an ordered conformation which could be melted out on heating. O-Deacetylation destroyed the ordered conformation of two A. viscosus polysaccharides, whilst O-deacylation of the A. stabilis polysaccharide stabilized the ordered structure. 

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