title: Biopterins in arginase, dihydropteridine reductase and phenylalanine hydroxylase deficiency.
mesh_terms: D000592:Amino Acid Metabolism, Inborn Errors / Q000201:enzymology*; D001708:Biopterins / Q000134:cerebrospinal fluid*; D006801:Humans; D020162:Hyperargininemia; D009247:NADH, NADPH Oxidoreductases / Q000172:deficiency*; D010651:Phenylalanine Hydroxylase / Q000172:deficiency*; D010661:Phenylketonurias / Q000201:enzymology*
chemical_list: D001708:Biopterins; D010651:Phenylalanine Hydroxylase; D009247:NADH, NADPH Oxidoreductases