| Chain | GOid | namespace | contents |
| A | 0006808 | biological_process | regulation of nitrogen utilization |
| A | 0030234 | molecular_function | enzyme regulator activity |
| B | 0006808 | biological_process | regulation of nitrogen utilization |
| B | 0030234 | molecular_function | enzyme regulator activity |
| C | 0006808 | biological_process | regulation of nitrogen utilization |
| C | 0030234 | molecular_function | enzyme regulator activity |
| D | 0006808 | biological_process | regulation of nitrogen utilization |
| D | 0030234 | molecular_function | enzyme regulator activity |
| E | 0006808 | biological_process | regulation of nitrogen utilization |
| E | 0030234 | molecular_function | enzyme regulator activity |
| F | 0006808 | biological_process | regulation of nitrogen utilization |
| F | 0030234 | molecular_function | enzyme regulator activity |