1. Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
2. Department
of Biophysics, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
3. Department
of Macromolecular Science and Engineering, University of Michigan, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
4. Department
of Biological Chemistry, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, United States