Immunogen sequence: DPHAMFAEFF GGRNPFDTFF GQRNGEEGMD IDDPFSGFPM GMGGFTNVNF GRSRSAQEPA RKKQDPPVTH DL. TCF-9 (transcription factor 9), also known as C2orf3 (chromosome 2 open reading frame 3), GCF (GC-rich sequence DNA-binding factor) or DNABF, is a 781 am