1. Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Department of Chemistry, University of California, Berkeley, California 94720, United States
3. Department of Biochemistry and Chemistry, University of California, Santa Cruz, California 95064, United States
4. Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
5. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
6. Novici Biotech LLC, Vacaville, California 95688, United States
7. Department of Molecular and Cellular Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, United States