Immunogen sequence: ELSFTKSSQA VRAVRDMLAV ACVNQWEQLR GPGGNEDGPQ KLDSEADAEP QDLESTNLLE SEAPRDYFLK FAYIVDLDSD TADKFLQLFG TKGVKRVLCP INYPLSPTRF THCEQVLGEG ALDRGTYYWE VEIIEGWVSM GVMAEDFSPQ EPYDRGRLGR NAHSCCLQWN GRSFS. E3 ubiquitin-protein ligase that mediate