This domain represents the C-terminal alpha helical domain of the apoptotic Apaf-1 protein.

1: Structure of the apoptotic protease-activating factor 1 bound to ADP. Riedl SJ, Li W, Chao Y, Schwarzenbacher R, Shi Y; Nature. 2005;434:926-933. PMID:15829969

2: Changes in Apaf-1 conformation that drive apoptosome assembly. Yuan S, Topf M, Reubold TF, Eschenburg S, Akey CW; Biochemistry. 2013;52:2319-2327. PMID:23521171

3: Crystal structure of full-length Apaf-1: how the death signal is relayed in the mitochondrial pathway of apoptosis. Reubold TF, Wohlgemuth S, Eschenburg S; Structure. 2011;19:1074-1083. PMID:21827944