Immunogen sequence: FDCLWLCLYA KLGELCVDPR PAVRKSAGQT LFSTIGAHGT LLQHSTWHTV IWKVLFHLLD RVRESSTTAD KEKIESGGGN ILIHHSRD Highest antigen sequence identity to the following orthologs: Mouse - 100%, Rat - 99%. May be required for traffic between late Golgi and