Immunogen sequence: AVTNASQAKV PMSTAGQTSR GVTMVSPSTA GGPAQKLQGN GVAGSPSVVP AAVVSAAHIQ TSPQAKVLLH. This gene encodes a protein containing an N-terminus RING-finger, four SH3 domains, and a region implicated in binding of the Rho GTPase Rac. Via the RING-f