Immunogen sequence: PVNENDILLV HRDSIFRSSC EVVSKANCAK LKQGIAVRFH GEEGMGQGVV REWFDILSNE IVNPDYALFT QSADGTT. E3 ubiquitin-protein ligase involved in Golgi membrane fusion and regulation of small GTPases. Acts as a regulator of Golgi membrane dynamics during