1. Firebird Biomolecular Sciences LLC, Alachua, Florida 32615, United States
2. Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, United States
3. Key Laboratory of Bio-Resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610064, P. R. China
4. Szostak-CDHT Large Nucleic Acids Institute and SeNA Research Institute, Chengdu, Sichuan 610041, P. R. China