Yama/CPP32beta, 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.; Beider,D.R.; Poirier,G.G.; Salvesen,G.S.; Dixit,V.M. (Cell, 1995)