1. Department of Chemistry, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, Maryland 21218, United States
2. Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, United States
3. Department of Biophysics and Biophysical Chemistry, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205, United States
4. Department of Pharmacology, University of Washington, Seattle, Washington 98195, United States
5. Department of Molecular Biology and Genetics, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205, United States
6. Department of Oncology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205, United States