Immunogen sequence: LFAASPSELH LKGGTNAEMA PQIDYTVMVF KPIVEKFGFI FNCDIKTRGY YPKGGGEVIV RMSPVKQLNP INLTERGCVT KIY Highest antigen sequence identity to the following orthologs: Mouse - 89%, Rat - 90%. RTCD1 catalyzes the conversion of 3'-phosphate to a 2',