1. Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, USA
2. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
3. Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306, USA
4. Department of Chemistry, Clemson University, Clemson, South Carolina 29625, USA
5. Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
6. Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA