1. Department of Cell Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195
2. School of Biomedical Sciences, Kent State University, Kent, Ohio 44242
3. Stanford Synchrotron Radiation Laboratory, Stanford University, Menlo Park, California 94025
4. Department of Clinical Pathology, Cleveland Clinic, Cleveland, Ohio 44195
5. Department of Chemistry, Kent State University, Kent, Ohio 44242
6. Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio 44106