| Chain | GOid | namespace | contents |
| A | 0004155 | molecular_function | 6,7-dihydropteridine reductase activity |
| A | 0005829 | cellular_component | cytosol |
| A | 0006729 | biological_process | tetrahydrobiopterin biosynthetic process |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0031427 | biological_process | response to methotrexate |
| A | 0047040 | molecular_function | pteridine reductase activity |
| B | 0004155 | molecular_function | 6,7-dihydropteridine reductase activity |
| B | 0005829 | cellular_component | cytosol |
| B | 0006729 | biological_process | tetrahydrobiopterin biosynthetic process |
| B | 0016491 | molecular_function | oxidoreductase activity |
| B | 0031427 | biological_process | response to methotrexate |
| B | 0047040 | molecular_function | pteridine reductase activity |
| C | 0004155 | molecular_function | 6,7-dihydropteridine reductase activity |
| C | 0005829 | cellular_component | cytosol |
| C | 0006729 | biological_process | tetrahydrobiopterin biosynthetic process |
| C | 0016491 | molecular_function | oxidoreductase activity |
| C | 0031427 | biological_process | response to methotrexate |
| C | 0047040 | molecular_function | pteridine reductase activity |
| D | 0004155 | molecular_function | 6,7-dihydropteridine reductase activity |
| D | 0005829 | cellular_component | cytosol |
| D | 0006729 | biological_process | tetrahydrobiopterin biosynthetic process |
| D | 0016491 | molecular_function | oxidoreductase activity |
| D | 0031427 | biological_process | response to methotrexate |
| D | 0047040 | molecular_function | pteridine reductase activity |