Immunogen sequence: LPASHYYKYK QQFIFPDVVP VPETPTRAPQ VILHPVTSNP ILEGNPLLQI EVEPTSENEE VHDEAEESED DFEEMNLSLL S Highest antigen sequence identity to the following orthologs: Mouse - 95%, Rat - 96%. KSR2 serine/threonine kinase or kinase suppressor of Ras 2