TABLE 4.
Extreme pathways in folate biosynthesis.
| Pathway | Reaction |
| P33a | 2ATP + 2GTP + 2Glu + NAD + + NADP + + 2Orthophosphate + 2PABA → 4(2P) + 2ADP + 2Folate + 2Formate + 2Glycolaldehyde + 2H+ + NADH + NADPH |
| P51b | 6ATP + 2GTP + 2Glu + 2H2O + NAD + + NADP + + 2Orthophosphate + 2PABA → 2P + 6ADP + 2Folate + 2Formate + 2Glycolaldehyde + 2H+ + NADH + NADPH |
| P55c | Folate → THF = DHF = Folate |
| P56d | 2(5–Formyl–THF) + 2ATP + 2Gly + 2H2O + NAD + + NADP + → 2ADP + 2Folate + 2H+ + NADH + NADPH + 2Orthophosphate + 2Ser |