| MMDBr0012920 | Dihydroneopterin | 6-Hydroxymethyl dihydropterin | Folic acid synthesis protein fol1 | Aldol addition (or reverse) | RHEA | 34755880 |
| MMDBr0013152 | L-Glutamic acid | D-Glutamate | L-alanine/L-glutamate racemase | Racemization; Synthesis | RHEA | 34755880 |
| MMDBr0013382 | (6S)-5,6,7,8-tetrahydrofolic acid | 7,8-dihydrofolate monoglutamate | Bifunctional dihydrofolate reductase-thymidylate synthase | Reduction | RHEA | 34755880 |
| MMDBr0013468 | alpha-Ketoglutarate | D-Glutamate | D-alanine aminotransferase | Amine group addition | RHEA | 34755880 |
| MMDBr0013936 | 6-Hydroxymethyl-dihydropterin pyrophosphate | 7,8-Dihydropteroic acid | Dihydropteroate synthase type-1 | Reduction; Synthesis | RHEA | 34755880 |
| MMDBr0016128 | Dihydroneopterin | 7,8-dihydromonapterin | Dihydroneopterin aldolase | Aldol addition (or reverse) | RHEA | 34755880 |
| MMDBr0017866 | Hydrogen sulfide | Acetic acid | O-acetylserine sulfhydrylase | Synthesis | RHEA | 34755880 |
