(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tryptophan + O2 = 5-hydroxy-L-tryptophan + (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin

Catalysed by TPH1, TPH2One of 3 routes

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tryptophan + O2 = 5-hydroxy-L-tryptophan + (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin

Catalysed by TPH1, TPH2

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(out) + a dicarboxylate(in) = (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(in) + a dicarboxylate(out)

Catalysed by SLC22A6, SLC22A8inner side of the membrane, outer side of the membraneOne of 2 routes

1. 1-O-(1,2-saturated-alkyl)-sn-glycerol + (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + O2 = a 1-(1-hydroxyalkyl)-sn-glycerol + (6R)-L-erythro-6,7-dihydrobiopterin + H2O

Catalysed by AGMO

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tyrosine + O2 = (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin + L-dopa

Catalysed by TH

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-phenylalanine + O2 = (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tyrosine

Catalysed by PAH

1. 1-O-(1,2-saturated-alkyl)-sn-glycerol + (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + O2 = a 1-(1-hydroxyalkyl)-sn-glycerol + (6R)-L-erythro-6,7-dihydrobiopterin + H2O

Catalysed by AGMO

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(out) + a dicarboxylate(in) = (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(in) + a dicarboxylate(out)
2. indoxyl sulfate(out) + a dicarboxylate(in) = indoxyl sulfate(in) + a dicarboxylate(out)

Catalysed by SLC22A6, SLC22A8inner side of the membrane, outer side of the membraneOne of 2 routes

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(out) + a dicarboxylate(in) = (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin(in) + a dicarboxylate(out)
2. a dicarboxylate(in) + sulfate(out) = a dicarboxylate(out) + sulfate(in)

Catalysed by SLC22A6, SLC22A8, SLC25A35, SLC25A34

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-phenylalanine + O2 = (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tyrosine
2. L-tyrosine + 2-oxoglutarate = 3-(4-hydroxyphenyl)pyruvate + L-glutamate
3. (2R)-2-hydroxy-3-(4-hydroxyphenyl)propanoate + NAD(+) = 3-(4-hydroxyphenyl)pyruvate + NADH + H(+)

Catalysed by PAH, TAT, MDH1

1. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tryptophan + O2 = 5-hydroxy-L-tryptophan + (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin
2. (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + L-tryptophan + O2 = 5-hydroxy-L-tryptophan + (4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin
3. beta-carboline hydrolysis