Control of Herbaspirillum seropedicae NifA activity by ammonium ions and oxygen

The activity of a truncated form of Herbaspirillum seropedicae NifA in different genetic backgrounds showed that its regulatory domain is involved in nitrogen control but not in O2 sensitivity or Fe dependence. The model for nitrogen control involving PII could thus apply to the proteobacteria at la...

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Veröffentlicht in:	Journal of bacteriology 1999-01, Vol.181 (2), p.681-684
Hauptverfasser:	Souza, E.M, Pedrosa, F.O, Drummond, M, Rigo, L.U, Yates, M.G
Format:	Artikel
Sprache:	eng
Schlagworte:	acetylene Ammonia - pharmacology ammonium compounds Azospirillum brasilense Azospirillum brasilense - enzymology Bacterial Proteins - genetics Bacterial Proteins - metabolism Bacteriology beta-galactosidase Deferoxamine - pharmacology enzyme activity Escherichia coli Flowers & plants Gene Expression Regulation, Bacterial - drug effects Genes Genes, Bacterial genetic regulation Genetics and Molecular Biology Gram-Negative Bacteria - drug effects Gram-Negative Bacteria - genetics Gram-Negative Bacteria - metabolism Herbaspirillum seropedicae iron Klebsiella pneumoniae - genetics nifh promoter Nitrogen Nitrogen Fixation - genetics nitrogen-fixing bacteria nitrogenase Nitrogenase - genetics Nitrogenase - metabolism Oxidoreductases oxygen Oxygen - pharmacology promoter regions Promoter Regions, Genetic Proteins recombinant DNA reduction Regulatory Sequences, Nucleic Acid reporter genes soil bacteria transcription (genetics) transcription factors Transcription Factors - genetics Transcription Factors - metabolism
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Beschreibung
Zusammenfassung:	The activity of a truncated form of Herbaspirillum seropedicae NifA in different genetic backgrounds showed that its regulatory domain is involved in nitrogen control but not in O2 sensitivity or Fe dependence. The model for nitrogen control involving PII could thus apply to the proteobacteria at large. NifA may have a role in controlling ADP-ribosylation of nitrogenase in Azospirillum brasilense.
ISSN:	0021-9193 1098-5530
DOI:	10.1128/JB.181.2.681-684.1999