1. Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, MS 4053, 635 Barnhill Dr., Indianapolis, Indiana 46202, United States
2. Department of Physics, Indiana University Purdue University Indianapolis, LD 154, 402 N. Blackford Street, Indianapolis, Indiana 46202, United States
3. X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
4. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, MPA-CINT, MS K771, Los Alamos, New Mexico 87545, United States