Control of nitrogenase reactivation by the GlnZ protein in Azospirillum brasilense.
The glnZ mutant of Azospirillum brasilense (strain 7611) showed only partial recovery (20 to 40%) after 80 min of ammonia-induced nitrogenase switch-off, whereas the wild type recovered totally within 10 min. In contrast, the two strains showed identical anoxic-induced switch-on/switch-off, indicating no cross talk between the two reactivation mechanisms.
Klassen
G
G
Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, 81531-970, Curitiba, Paraná, Brazil.
de Souza
E M
EM
Yates
M G
MG
Rigo
L U
LU
Inaba
J
J
Pedrosa
F de O
Fde O
D000641:Ammonia; D000693:Anaerobiosis; D015806:Azospirillum brasilense / Q000201:enzymology / Q000378:metabolism*; D001426:Bacterial Proteins / Q000235:genetics / Q000502:physiology*; D009154:Mutation; D009591:Nitrogenase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D013997:Time Factors
D001426:Bacterial Proteins; C100965:GlnZ protein, Azospirillum brasilense; D000641:Ammonia; D009591:Nitrogenase