1. Department of Biochemistry, University of Illinois Urbana-Champaign; Urbana IL USA
2. Howard Hughes Medical Institute; Urbana IL USA
3. Department of Physics and Center for the Physics of Living Cells, University of Illinois Urbana-Champaign; Urbana IL USA
4. Center for Biophysics and Computational Biology, University of Illinois Urbana-Champaign; Urbana IL USA