SIVA1 GI:11277470 CD27-binding (Siva) protein isoform 2 1 mpkrscpfad vaplqlkvrv sqrelsrgvc aerysqevfd psgvasiacs 50 51 scvravdgka vcgqceralc gqcvrtcwgc gsvactlcgl vdcsdmyekv 100 101 lctscamfet