1. Department of Pharmacology University of California San Diego La Jolla CA 92093 USA
2. NSF Center for Theoretical Biological Physics La Jolla CA 92093 USA
3. Center for Biophysics & Computational Biology University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
4. School of Molecular and Cellular Biology University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
5. Department of Chemistry University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
6. Howard Hughes Medical Institute University of California San Diego La Jolla CA 92093 USA
7. Department of Chemistry & Biochemistry National Biomedical Computation Resource University of California San Diego La Jolla CA 92093 USA