Immunogen sequence: MAGVFPYRGP GNPVPGPLAP LPDYMSEEKL QEKARKWQQL QAKRYAEKRK FGFVDAQKED MPPEHVRKII RDHGDMTNRK FRHDKRVYLG ALKYMPHAVL; Positive Samples: HeLa, Jurkat; Cellular Location: Nucleus speckle. Pre-mRNA splicing occurs in 2 sequential transesterific