The enzyme 4a-hydroxytetrahydrobiopterin dehydratase (EC 4.2.1.96) catalyzes the chemical reaction4a-hydroxytetrahydrobiopterin 6,7-dihydrobiopterin + H2O
Structural studies
As of late 2007, 3 structures have been solved for this class of enzymes, with PDB accession codes , , and . ==References==