1. Shull Wollan Center, a Joint Institute for Neutron Sciences, ‡Quantum Condensed
Matter Division, §Biology and Soft Matter Division, ∥Chemical and Engineering Materials Division, and ⊥Center for Molecular
Biophysics, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
2. Department of Biochemistry and Cellular and Molecular Biology and ∇Department of
Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, United States