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Regulation of amidase formation in mutants fromPseudomonas aeruginosaPAO lacking glutamine synthetase activity

โœ Scribed by Dick B. Janssen; Patricia M. Herst; Han M. L. J. Joosten; Chris Drift

Book ID
104762908
Publisher
Springer
Year
1982
Tongue
English
Weight
362 KB
Volume
131
Category
Article
ISSN
0302-8933

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โœฆ Synopsis

The formation of amidase was studied in mutants from Pseudomonas aeruginosa PAO lacking glutamine synthetase activity. It appeared that catabolite repression of amidase synthesis by succinate was partially relieved when cellular growth was limited by glutamine. Under these conditions, a correlation between amidase and urease formation was observed. The results suggest that amidase formation in strain PAO is subject to nitrogen control and that glutamine or some compound derived from it mediates the nitrogen repression of amidase.

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Role of glutamine synthetase activity in
Role of glutamine synthetase activity in the urea regulation of heterocyst and nitrogenase formation in the cyanobacterium Anabaena cycadeae
โœ Surendra Singh; P. S. Bisen ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 360 KB

## Abstract Growth and urea regulation of heterocyst and nitrogenase formation have been studied in the diazotrophic cyanobacterium __Anabaena cycadeae__ and its glutamine auxotrophic mutant strain lacking glutamine synthetase (GS) activity. The parent strain having normal GS activity utilized urea