>4xwy_C mol:protein length:275 Sepiapterin reductase MHHHHHHENLYFQGMEGGLGRAVCLLTGASRGFGRTLAPLLASLLSPGSVLVLSARNDE ALRQLEAELGAERSGLRVVRVPADLGAEAGLQQLLGALRELPRPKGLQRLLLINNAGSL GDVSKGFVDLSDSTQVNNYWALNLTSMLCLTSSVLKAFPDSPGLNRTVVNISSLCALQP FKGWALYCAGKAARDMLFQVLALEEPNVRVLNYAPGPLDTDMQQLARETSVDPDMRKGL QELKAKGKLVDCKVSAQKLLSLLEKDEFKSGAHVDFYDK