Immunogen sequence: GAILVYDITD EDSFQKVKNW VKELRKMLGN EICLCIVGNK IDLEKERHVS IQEAESYAES VGAKHYHTSA KQNKGIEELF LDLCKRMIET AQVDERAKGN GSSQPGTARR GVQIIDDEPQ AQTS Highest antigen sequence identity to the following orthologs: Mouse - 97%, Rat - 96%. RAB21 is a