title: Citric acid cycle enzymes and nitrogenase in nodules of Pisum sativum.
abstract: Activity of isocitric dehydrogenase (isocitrate dehydrogenase (NADP+); EC 1.1.1.42) in bacteroids is highest at the time of maximum nitrogen fixation. It is likely that isocitric dehydrogenase is the source of reductant for dinitrogen fixation.
mesh_terms: D002950:Citrate (si)-Synthase / Q000378:metabolism; D002952:Citric Acid Cycle; D007887:Fabaceae / Q000254:growth & development / Q000378:metabolism / Q000382:microbiology*; D007521:Isocitrate Dehydrogenase / Q000378:metabolism*; D008291:Malate Dehydrogenase / Q000378:metabolism; D008292:Malate Synthase / Q000378:metabolism; D009586:Nitrogen Fixation; D009591:Nitrogenase / Q000378:metabolism*; D010946:Plants, Medicinal; D012231:Rhizobium / Q000201:enzymology* / Q000378:metabolism; D013385:Succinate Dehydrogenase / Q000378:metabolism
chemical_list: D008291:Malate Dehydrogenase; D007521:Isocitrate Dehydrogenase; D009591:Nitrogenase; D013385:Succinate Dehydrogenase; D002950:Citrate (si)-Synthase; D008292:Malate Synthase