| Chain | GOid | namespace | contents |
| A | 0009399 | biological_process | nitrogen fixation |
| A | 0016163 | molecular_function | nitrogenase activity |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0065003 | biological_process | protein-containing complex assembly |
| B | 0009399 | biological_process | nitrogen fixation |
| B | 0016163 | molecular_function | nitrogenase activity |
| B | 0016491 | molecular_function | oxidoreductase activity |
| B | 0065003 | biological_process | protein-containing complex assembly |
| C | 0009399 | biological_process | nitrogen fixation |
| C | 0016163 | molecular_function | nitrogenase activity |
| C | 0016491 | molecular_function | oxidoreductase activity |
| C | 0065003 | biological_process | protein-containing complex assembly |
| D | 0009399 | biological_process | nitrogen fixation |
| D | 0016163 | molecular_function | nitrogenase activity |
| D | 0016491 | molecular_function | oxidoreductase activity |
| D | 0065003 | biological_process | protein-containing complex assembly |
| E | 0009399 | biological_process | nitrogen fixation |
| E | 0016163 | molecular_function | nitrogenase activity |
| E | 0016491 | molecular_function | oxidoreductase activity |
| E | 0065003 | biological_process | protein-containing complex assembly |
| F | 0009399 | biological_process | nitrogen fixation |
| F | 0016163 | molecular_function | nitrogenase activity |
| F | 0016491 | molecular_function | oxidoreductase activity |
| F | 0065003 | biological_process | protein-containing complex assembly |
| G | 0009399 | biological_process | nitrogen fixation |
| G | 0016163 | molecular_function | nitrogenase activity |
| G | 0016491 | molecular_function | oxidoreductase activity |
| G | 0065003 | biological_process | protein-containing complex assembly |
| H | 0009399 | biological_process | nitrogen fixation |
| H | 0016163 | molecular_function | nitrogenase activity |
| H | 0016491 | molecular_function | oxidoreductase activity |
| H | 0065003 | biological_process | protein-containing complex assembly |