Positive Samples: HepG2, MCF7, Mouse brain Immunogen sequence: YYDLRNTKQP IMVFKGHRKA VSYAKFVSGE EIVSASTDSQ LKLWNVGKPY CLRSFKGHIN EKNFVGLASN GDYIACGSEN NSLYLYYKGL SKTLLTFKFD TVKSVLDKDR KEDDTNEFVS AVCWRALPDG ESNVLIAANS QGTIKVLELV. E3 ubiquitin-protein liga