Immunogen sequence: MGQKVTGGIK TVDMRDPTYR PLKQELQGLD YCKPTRLDLL LDMPPVSYDV QLLHSWNNND; Positive Samples: U-87MG, A-549, A-375, Mouse spleen, Rat testis; Cellular Location: Cytoplasm. Substrate recognition component of a SCF-like ECS (Elongin BC-CUL2/5-SO