Immunogen sequence: RDVLPRTLLL PPPTLGPRDE HTDPVQIGRV QQDTPGKVLS IVNQLYLETH RGWGREQTPQ ETEPEAAQRH DPAPRNPAPH GVSWVKGPLS Highest antigen sequence identity to the following orthologs: Mouse - 66%, Rat - 63%. Guanine nucleotide exchange factor (GEF) for RAB5