Immunogen sequence: TFSHCKSEHQ FNIDSMVHKH GLEFYGYIKL INFIRLKNPT VEYMNSIYNP VPWEKEEYLK PVLEDDLLLQ FDVEDLYEPV SVPFSYPNGL SENTSVVEKL KHMEARALSA EAALARARED LQKMKQFAQD FVMHTDVRTC SSS. Type I protein arginine N-methyltransferases (PRMTs), such as PRMT3, cataly