Immunogen sequence: RVVTANRMLK QMLFRYQGYI GAALVLGGVD VTGPHLYSIY PHGSTDKLPY VTMGSGSLAA MAVFEDKFRP DMEEEEA. The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 ring