The target is usually found in the following locations: Cytoplasm, Melanosome. Immunogen sequence: MDKNELVQKA KLAEQAERYD DMAACMKSVT EQGAELSNEE RNLLSVAYKN VVGARRSSWR VVSSIEQKTE GAEKKQQMAR EYREKIETEL RDICNDVLSL. At least seven isoforms comprise the highly