Immunogen sequence: APWAFSYLAG PPATPPDPPR PKRRSHSLSR PGPTEGDAEG EAEGPVGSTL GSYATLTRRP GRSALVRTSP SVTPTPARGT PRSQSFALR. This gene encodes a large protein that contains six ankyrin repeats, as well as a Src homology 3 (SH3) domain and two sterile alpha mot