1. Molecular and Computational Biology, Department of Biological Sciences, University of Southern California, Los Angeles, California 90089, United States
2. Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
3. USC Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, United States
4. Department of Statistics and Applied Probability, University of California, Santa Barbara, California 93106, United States