Immunogen sequence: KQDVKEQMFN ELLTYNAPHL MQDLDTYLGG REWLIGNSVT WADFYWEICS TTLLVFKPDL LDNHPRLVTL RKKVQAIPAV ANWI Highest antigen sequence identity to the following orthologs: Mouse - 73%, Rat - 73%. PGDS is a sigma class glutathione-S-transferase family