Cadaverine Suppresses Persistence to Carboxypenicillins in Pseudomonas aeruginosa PAO1
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چکیده
منابع مشابه
Cadaverine suppresses persistence to carboxypenicillins in Pseudomonas aeruginosa PAO1.
The refractory nature of Pseudomonas aeruginosa infections is due in part to the presence of specialized cells, termed persisters, within the population. To identify genes involved in P. aeruginosa persister formation, a PAO1 transposon (Tn) library was challenged en masse with 1,000 μg/ml of carbenicillin and was enriched for mutants that were able to survive in the presence of this antibiotic...
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In comparison to other Pseudomonas, P. aeruginosa grows poorly in L-lysine as a sole source of nutrient while fast growth mutants can be obtained. The proposed catabolic pathway involves lysine decarboxylation to cadaverine and its subsequent degradation through -glutamylation pathway to -aminovalerate and glutarate. The lysine decarboxylase A (ldcA) gene, previously identified as a member of...
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Growth and conversion to the mucoid phenotype by nonmucoid Pseudomonas aeruginosa PAO1 was studied in a chemostat system under conditions designed to reflect those likely to be present during chronic infection in the lung in cystic fibrosis patients. Mucoid variants were consistently isolated during continuous culture in the presence of 0.3 M NaCl or 5 or 10% glycerol. Mucoid subpopulations wer...
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Objective(s) Some properties of neuraminidase produced by Pseudomonas aeruginosa PAO1 growth in a defined medium (BHI) were examined and evaluated for its features. Materials and Methods The obtained supernatant enzyme of P. aeruginosa PAO1 cultures was used in a sensitive fluorometric assay by using 2'-(4-methylumbelliferyl) a-D-N acetylneuraminic acid as substrate. As hydrolyzing MUN with ...
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ژورنال
عنوان ژورنال: Antimicrobial Agents and Chemotherapy
سال: 2010
ISSN: 0066-4804,1098-6596
DOI: 10.1128/aac.01751-09