Immunogen sequence: WVASVDVVEN EEASASIIVK MTDSFTEQAD QVTAEVGKLL GEEKVDAILC VAGGWAGGNA KSKSLFKNCD LMWKQSIWTS TISSHLATKH Highest antigen sequence identity to the following orthologs: Mouse - 91%, Rat - 96%. This gene encodes the enzyme dihydropteridine red