Immunogen sequence: GHIHESQRGT DRIGYFPPGI VEVVSKRVGI PAARLPSAPT PLRPGFSRTP QPPAEEPPHP LTYSQLPRVG LSPDSPAGDR NSV. This gene encodes a large protein that contains six ankyrin repeats, as well as a Src homology 3 (SH3) domain and two sterile alpha motif (SA