1. Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
2. Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
3. Thermo Fisher Scientific, San Jose, California 95134, United States
4. National Center for Quantitative Biology of Complex Systems, Madison, Wisconsin 53706, United States
5. Morgridge Institute for Research, Madison, Wisconsin 53515 United States