Immunogen sequence: DLSGLDEVIF SYVLGVLEDL GPSGPSEENF DMEAFTEMME AYVPGFAHIP RGTIGDMMQK LSGQLSDARN KENLQPQSSG VQGQVPI. The CUE (coupling of ubiquitin conjugation to endoplasmic reticulum degradation) domain is an evolutionarily conserved, approximately 40