Immunogen sequence: MTTPNKTPPG ADPKQLERTG TVREIGSQAV WSLSSCKPGF GVDQLRDDNL ETYWQSDGSQ PHLVNIQFRR KTTVKTLCIY ADYKSDESYT PSKISVRVGN NFHNLQEIRQ LELVEPSGWI HVPLTDNHKK PTRTFMIQIA VLANHQNGRD THMRQIKIYT PVEESSIGKF PRCTTIDFMM YRSIR. Cell cycle regulated protein