Immunogen sequence: KLQKTYRMEP AGSQGVWGLD DFQFLPFIWG SSQLIDHPYL EPRHFVDEKA VNENHKDYMF LECILFITEM KTGPFAEHSN QLWNISAVPS WSKVNQGLIR MYKAECLEKF PVIQHFKF. Protein phosphatase 2A is one of the four major Ser/Thr phosphatases and is implicated in the negative