✦ LIBER ✦

Structure of the exopolysaccharide of Pseudomonas stutzeri strain ATCC 17588

✍ Scribed by Stanley F. Osman; William F. Fett; Robert L. Dudley

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 326 KB
Volume: 265
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(94)00228-2

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✦ Synopsis

The isolation and structural characterization of exopolysaccharides (EPSs) synthesized by Pseudomonas species has been an integral part of a program in this laboratory with the goal of possible commercialization of these polymers. The EPSs which we have characterized to date were all isolated from plant pathogenic pseudomonads belonging to rRNA-DNA homology group I [l]. Most of the EPSs were demonstrated to be acidic and included alginates as well as several novel poIymers which lacked uranic acids but contained acidic substituents [2-51. We now report on the characterization of the EPS of the human opportunistic pathogen, Pseudomonas stutzeri. This group I bacterium can be distinguished from most other members of the group by its ability to denitrify and its inability to produce a fluorescent pigment [l]. The structure of P. stutzeri EPS produced by two distinct colony types has been determined. The acidic nature is not due to the presence of uranic acids, but rather to a I-carboxyethyl (lactic acid) substituent.

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