Immunogen sequence: VPPCLTTSAP LIRRQLSHDH ESVGPPSLDA QPNSKTERSK SYDEGLDDYR EDAKLSFKHV SSLKGIKIAD SQKSSEDSGS RKDSSSEVFS DAAKEG Highest antigen sequence identity to the following orthologs: Mouse - 92%, Rat - 95%. Functions as a GTPase-activating protein (