si_0368	Pterin_metabolism	6-pyruvoyl tetrahydrobiopterin synthase (EC 4.2.3.12)
si_0368	Pterin_metabolism	GTP cyclohydrolase I (EC 3.5.4.16) type 1
si_0368	Pterin_metabolism	Phenylalanine-4-hydroxylase (EC 1.14.16.1)
si_0368	Pterin_metabolism	Pterin-4-alpha-carbinolamine dehydratase (EC 4.2.1.96)