Shen, Cuicui, Xiang Wang, Yexing Liu, Quanxiu Li, Zhao Yang, Nieng Yan, Tingting Zou, and Ping Yin. (2015) 2015. “Specific RNA Recognition by Designer Pentatricopeptide Repeat Protein”. Mol Plant 8 (4): 667-70. doi:10.1016/j.molp.2015.01.001.

Qi, Shiqian, Yuxuan Pang, Qi Hu, Qun Liu, Hua Li, Yulian Zhou, Tianxi He, et al. (2010) 2010. “Crystal Structure of the Caenorhabditis Elegans Apoptosome Reveals an Octameric Assembly of CED-4”. Cell 141 (3): 446-57. doi:10.1016/j.cell.2010.03.017.