Reaction catalyzed by pyrimidodiazepine synthase (1.5.4.1)
+
+
H2O
=
+
2
2-amino-6-acetyl-3,7,8,9-tetrahydro-3H-pyrimido[4,5-b][1,4]diazepin-4-one
+
glutathione disulfide
+
H2O
=
6-pyruvoyltetrahydropterin
+
2 glutathione
