1. Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
2. Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA.
3. Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.
4. Novavax, Inc., 21 Firstfield Road, Gaithersburg, MD 20878, USA.