1. Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, IL 60637
2. Department of Chemistry, The University of Chicago, Chicago, IL 60637
3. Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, IL 60637
4. Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL 60637
5. James Franck Institute, The University of Chicago, Chicago, IL 60637
6. Department of Physics, The University of Chicago, Chicago, IL 60637