3LQQ:
reference: Crystal structure of the Caenorhabditis elegans apoptosome reveals an octameric assembly of CED-4., Qi S, Pang Y, Hu Q, Liu Q, Li H, Zhou Y, He T, Liang Q, Liu Y, Yuan X, Luo G, Li H, Wang J, Yan N, Shi Y, Cell. 2010 Apr 30;141(3):446-57. PMID: 20434985

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