4a-hydroxytetrahydrobiopterin => q-dihydrobiopterin + H2O (Homo sapiens)
4a-hydroxytetrahydrobiopterin => q-dihydrobiopterin + h2o (homo sapiens)
4a-hydroxytetrahydrobiopterin => q-dihydrobiopterin + H2O (Homo sapiens)
4a-hydroxytetrahydrobiopterin => q-dihydrobiopterin + h2o (homo sapiens)