1. Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702, United States
2. Department of Biotechnology and Biophysics, Biocenter, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
3. Center for Computational and Theoretical Biology, University of Würzburg, Campus Hubland Nord 32, 97074, Würzburg, Germany
4. Department of Chemistry, Brooklyn College, City University of New York, Brooklyn, New York, United States
5. Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States