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. 2019 Oct 15;10:2350. doi: 10.3389/fmicb.2019.02350

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

Reaction involved based on KEGG reaction number: aR03504, R03066, R02235, R00425, R02237, R04621, R11072; bR00127, R03504, R03503, R03067, R02235, R00425, R02237, R04621, R011071; cR02235, R00937, R00936; dR02235, R00936, R00945, R01200, R02301.