q-dihydrobiopterin + NADH + H+ => tetrahydrobiopterin + NAD+ (Canis familiaris)
q-dihydrobiopterin + nadh + h+ => tetrahydrobiopterin + nad+ (canis familiaris)
q-dihydrobiopterin + NADH + H+ => tetrahydrobiopterin + NAD+ (Canis familiaris)
q-dihydrobiopterin + nadh + h+ => tetrahydrobiopterin + nad+ (canis familiaris)