Authors: Jun Zou; Diana Tran; Mai Baalbaki; Ling Fung Tang; Annie Poon; Angelo Pelonero; Erron W Titus; Christiana Yuan; Chenxu Shi; Shruthi Patchava; Elizabeth Halper; Jasmine Garg; Irina Movsesyan; Chaoying Yin; Roland Wu; Lisa D Wilsbacher; Jiandong Liu; Ronald L Hager; Shaun R Coughlin; Martin Jinek; Clive R Pullinger; John P Kane; Daniel O Hart; Pui-Yan Kwok; Rahul C Deo Journal: Elife Date: 2015-10-16 Impact factor: 8.140