FB2026_03 , released September 17, 2026
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Term nitrogenase complex ID (Ontology) GO:0016610 (Gene Ontology)
Definition An enzyme complex composed of two proteins, dinitrogenase and nitrogenase reductase; dinitrogenase is tetrameric with an alpha2-beta2 structure and nitrogenase reductase is a homodimer, and both are associated with metal ions, which differ between species. Both proteins are required for the enzyme activity of the complex, the formation of oxidized ferredoxin and ammonia from reduced ferredoxin and nitrogen.[ PubMed:10852721 ]
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protein-containing complex
 |__intracellular protein-containing complex__
catalytic complex                             |
 |__oxidoreductase complex____________________|
                                              nitrogenase complex
                                               |__iron-iron nitrogenase complex
                                               |__molybdenum-iron nitrogenase complex
                                               |__vanadium-iron nitrogenase complex
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Is a intracellular protein-containing complex
oxidoreductase complex
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