Immunogen sequence: SGPQGIAPVP PPRDLSWEAG HGGNVALPLK ETSVENFLGA TTPALAKLQV PREQLSEVLE QICSGSCGPI FRANMNTGDP SKPKSVILKA LKEPAGLHEV QDFLGRIQFH QYLGKHKNLV QLEGCCTEKL PLYM. STYK1, a probable tyrosine protein-kinase, which has strong transforming capabilities