1. Department of Chemical and Biomolecular Engineering, University of California, Irvine, CA 92697
2. Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
3. Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720
4. California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720
5. Department of Chemistry, University of California, Berkeley, CA 94720
6. Biophysics Program, University of Michigan, Ann Arbor, MI 48109