SIRPB1 GI:144953878 signal-regulatory protein beta 1 isoform 2 precursor 1 mpvpaswphl pspfllmtll lgrltgvage delqviqpek svsvaagesa 50 51 tlrcamtsli pvgpimwfrg agagreliyn qkeghfprvt tvseltkrnn 100 101 ldfsisisni tpadagtyyc vkfrkgspdd vefksgagte lsvreaalap 150 151 tapllvalll gpklllvvgv saiyicwkqk a