Bcl-2 Family   Caspase Family   IAP Family   Tumor Suppressor
Anti-apoptotic proteins  Pro-apoptotic proteins
Bcl-2  Bax  Apoptosis “initiators”: caspase-2, 8, 9, 10  NAIP  p53
Bcl-xL  Bak1  Apollon  p63
Mcl-1  Bcl-xS  Survivin  p73
Boo/Diva  Bad  Apoptosis “executioners”: caspase-2, 3, 6, 7  IAP1  　
　  Bid  IAP2  　
　  Bik  XIAP  　
　  Bim  Cytokine processors: caspase-1, 4, 5, 11, 12, 14  　  　
　  Noxa  　  　
　  Puma