7-dehydrocholesterol reductase MAAKSQPNIP KAKSLDGVTN DRTASQGQWG RAWEVDWFSL ASVIFLLLFA PFIVYYFIMA CDQYSCALTG PVVDIVTGHA RLSDIWAKTP PITRKAAQLY TLWVTFQVLL YTSLPDFCHK FLPGYVGGIQ EGAVTPAGVV NKYQINGLQA WLLTHLLWFA NAHL