Immunogen sequence: SQNQERLCAF KDPYQQDLGI GESRISHENG TILCSKGSTC YGLWEKSKGD INLVKQGCWS HIGDPQECHY EECVVTTTPP SIQNGTYRFC CCSTDLCNVN FTENFPPPDT TPLSPPHSFN RDET. BMPR2 is a member of the bone morphogenetic protein (BMP) receptor family of transmembrane serin