Nitrite Formation from Hydroxylamine and Oximes by Pseudomonas aeruginosa
AUTOR(ES)
Amarger, Noelle
RESUMO
Nitrite was formed from hydroxylamine and several oximes by intact cells and extracts of Pseudomonas aeruginosa. The activity was induced by the presence of oximes in the culture medium. Nitroalkanes were not intermediates in the conversion of acetaldoxime, acetone oxime, or butanone oxime to nitrite, since nitromethane inhibited the formation of nitrite from the nitro compounds but not from the corresponding oximes. The oxime apparently functions as a constant source of hydroxylamine during growth of the bacterium. Hydroxylamine at low concentration was converted stoichiometrically to nitrite by extracts of the bacterium; high concentrations were inhibitory. Nicotinamide adenine dinucleotide phosphate, oxygen, and other unidentified cofactors were necessary for the reaction. Actively nitrifying extracts possessed no hydroxylamine-cytochrome c reductase activity. Hyponitrite, nitrous oxide, and nitric oxide were not metabolized.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=252191Documentos Relacionados
- Salicylate formation from naphthalene by Pseudomonas aeruginosa.
- The Utilization of Nitrogen in Hydroxylamine and Oximes by Azotobacter vinelandii1
- Nitrite reductase from Pseudomonas aeruginosa induces inflammatory cytokines in cultured respiratory cells.
- Nitrite Reductase from Pseudomonas aeruginosa Released by Antimicrobial Agents and Complement Induces Interleukin-8 Production in Bronchial Epithelial Cells
- Promotion of Seed Germination by Nitrate, Nitrite, Hydroxylamine, and Ammonium Salts 1