1.1.1.220	286308	Biosynthesis of tetrahydrobiopterin: conversion of dihydroneopterin triphosphate to tetrahydropterin intermediates	Bos taurus	
1.1.1.220	286308	Biosynthesis of tetrahydrobiopterin: conversion of dihydroneopterin triphosphate to tetrahydropterin intermediates	Rattus norvegicus	
1.1.1.220	286310	Human liver 6-pyruvoyl tetrahydropterin reductase is biochemically and immunologically indistinguishable from aldose reductase	Homo sapiens	
1.1.1.220	286309	The biosynthesis of tetrahydrobiopterin in rat brain. Purification and characterization of 6-pyruvoyl tetrahydropterin (2-oxo)reductase	Rattus norvegicus