1. Department of Integrative Structural and Computational Biology, Scripps Research Institute, La Jolla, CA 92037, USA.
2. Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, CA 92037, USA.
3. Department of Pediatrics and Department of Immunology and Microbiology, Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Denver, CO 80045, USA.
4. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
5. Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
6. University of Florida College of Medicine, Gainesville, FL 32611, USA.