You'd Prefer An Argonaute

C3PO, an Endoribonuclease That Promotes RNAi by Facilitating RISC Activation

Ying Liu, Xuecheng Ye, Feng Jiang, Chunyang Liang, Dongmei Chen, Junmin Peng, Lisa N. Kinch, Nick V. Grishin, Qinghua Liu

Science 325 (5941): 750-753, August 2009.
doi:10.1126/science.1176325