title: Formation of two forms of nitrogenase and effects of its switch-off by ammonia in purple bacteria.
abstract: The switch-off of nitrogenase by ammonia in cells of the purple bacteria is not due to the conversion of nitrogenase into an inactive form. The latter is probably an initial stage of the enzyme degradation in the presence of excess nitrogen.
authors.affiliation: Institute of Soil Science and Photosynthesis of the USSR Academy of Sciences, Pushchino, Moscow Region.
authors.forename: A F
authors.initials: AF
authors.lastname: Yakunin
authors.forename: I N
authors.initials: IN
authors.lastname: Gogotov
mesh_terms: D000641:Ammonia / Q000494:pharmacology*; D001419:Bacteria / Q000201:enzymology* / Q000235:genetics; D001426:Bacterial Proteins / Q000096:biosynthesis* / Q000235:genetics; D004789:Enzyme Activation; D004790:Enzyme Induction / Q000187:drug effects; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects; D005798:Genes, Bacterial; D009584:Nitrogen / Q000378:metabolism; D009586:Nitrogen Fixation / Q000235:genetics; D009591:Nitrogenase / Q000096:biosynthesis* / Q000235:genetics; D013045:Species Specificity
chemical_list: D001426:Bacterial Proteins; D000641:Ammonia; D009591:Nitrogenase; D009584:Nitrogen