NCIt definition : Human PTS wild-type allele is located in the vicinity of 11q23.1 and is approximately
44 kb in length. This allele, which encodes 6-pyruvoyl tetrahydrobiopterin synthase
protein, is involved in the biosynthesis of tetrahydrobiopterin, which is an essential
cofactor for aromatic amino acid hydroxylases. Mutations in the gene are associated
with BH4-deficient hyperphenylalaninemia A.;