1. Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, IA 52242
2. NMR Facility, University of Iowa, Iowa City, IA 52242
3. Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA 52242
4. Department of Biochemistry and Molecular Biology, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN 55905
5. Biochemistry and Molecular Biology Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN 55905
6. Protein Crystallography Facility, University of Iowa, Iowa City, IA 52242