Skip to Content


Pronunciation: di-hi'dro-bi-op'ter-in

Definition: Precursor to tetrahydrobiopterin, a required cofactor for a number of enzymes, including the biosynthesis of l-tyrosine; the inability to synthesize dihydrobiopterin can result in a form of malignant hyperphenylalaninemia.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2019 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.