Yama/CPP32 β, a mammalian homolog of CED-3, is a crmA-inhibitable protease that cleaves the death substrate poly(ADP-ribose) polymerase - Tewari,M.; Quan,L.T.; O’Rourke,K.; Desnoyers,S.; Zeng,Z.; Beidler,D.R. (Cell, 1995)