q-dihydrobiopterin + NADH + H+ => tetrahydrobiopterin + NAD+ (Danio rerio)
q-dihydrobiopterin + nadh + h+ => tetrahydrobiopterin + nad+ (danio rerio)
q-dihydrobiopterin + NADH + H+ => tetrahydrobiopterin + NAD+ (Danio rerio)
q-dihydrobiopterin + nadh + h+ => tetrahydrobiopterin + nad+ (danio rerio)