4QN0:
reference: Structural insights into apoptotic DNA degradation by CED-3 protease suppressor-6 (CPS-6) from Caenorhabditis elegans., Lin JL, Nakagawa A, Lin CL, Hsiao YY, Yang WZ, Wang YT, Doudeva LG, Skeen-Gaar RR, Xue D, Yuan HS, J Biol Chem. 2012 Mar 2;287(10):7110-20. Epub 2012 Jan 5. PMID: 22223640

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