"sepiapterin reductase (L-threo-7,8-dihydrobiopterin forming)"
"sepiapterin reductase (l-threo-7,8-dihydrobiopterin forming)"
"sepiapterin reductase (L-threo-7,8-dihydrobiopterin forming)"
"sepiapterin reductase (l-threo-7,8-dihydrobiopterin forming)"