Immunogen sequence: QGLAGLRNLG NTCFMNSILQ CLSNTRELRD YCLQRLYMRD LHHGSNAHTA LVEEFAKLIQ TIWTSSPNDV VSPSEFKTQI QRYAPRFVGY NQQDAQEFLR FLLDGLHNEV NRVTLRPKSN PENLDHLP. Ubiquitin is a highly conserved protein involved in the regulation of intracellular protein