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Phosphate starvation-independent 2-aminoethylphosphonic acid biodegradation in a newly isolated strain of Pseudomonas putida, NG2

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Ternan, Nigel and Quinn, JP (1998) Phosphate starvation-independent 2-aminoethylphosphonic acid biodegradation in a newly isolated strain of Pseudomonas putida, NG2. SYSTEMATIC AND APPLIED MICROBIOLOGY, 21 (3). pp. 346-352. [Journal article]

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Abstract

A strain of Pseudomonas putida that utilized the biogenic organophosphonate 2-aminoethylphosphonic acid as sole carbon and energy, nitrogen and phosphorus source contained 2-aminoethylphosphonic acid: pyruvate aminotransferase and phosphonoacetaldehyde hydrolase (phosphonatase) activities which were inducible by the presence of 2-aminoethylphosphonic acid in the culture medium, regardless of the phosphate status of the cells. Neither of these activities were induced in either phosphate-free or phosphate-replete medium in the absence of 2-aminoethylphosphonic acid. Alkaline phosphatase activity was induced in phosphate limited medium, however, indicating a phosphate-starvation inducible response. In Enterobacter aerogenes IFO 12010, 2-aminoethylphosphonate : pyruvate aminotransferase and phosphonatase activities were induced only when cells were both phosphate limited and supplied with 2-aminoethylphosphonic acid as sole phosphorus source for growth. Neither enzyme activity was induced in phosphate-replete medium, or in medium where both 2-aminoethylphosphonic acid and inorganic phosphate were supplied as sources of phosphorus. The results point to the presence of a substrate inducible 2-aminoethylphosphonic acid biodegradation pathway in the isolated strain of Pseudomonas putida. Uniquely, therefore, the pathway is not under pho regulon control in this strain.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Northern Ireland Centre for Food and Health (NICHE)
ID Code:3690
Deposited By:Dr Nigel Ternan
Deposited On:17 Dec 2009 14:09
Last Modified:16 May 2012 15:22

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