BBC3 GI:187829745 BCL2 binding component 3 isoform 3 1 mkfgmgsaqa cpcqvpraas ttwvpcqice trgaaaappl tlegpvqshh 50 51 gtpaltqgpq sprdgaqlga ctrpvdvrds ggrplpppdt lasagdflct 100 101 m