This domain is found in Apoptotic protease-activating factor 1 from Mus musculus (APAF-1), responsible to ignite the downstream cascade of caspases in the mitochondrial pathway of apoptosis. This entry represents the winged-helix domain (WHD) [1-5].

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: Atomic structure of the apoptosome: mechanism of cytochrome c- and dATP-mediated activation of Apaf-1. Zhou M, Li Y, Hu Q, Bai XC, Huang W, Yan C, Scheres SH, Shi Y; Genes Dev. 2015;29:2349-2361. PMID:26543158

4: 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

5: A near atomic structure of the active human apoptosome. Cheng TC, Hong C, Akey IV, Yuan S, Akey CW; Elife. 2016; [Epub ahead of print] PMID:27697150