1. Department of Integrative Structural and Computational Biology, International AIDS Vaccine Initiative (IAVI) Neutralizing Antibody Center, and Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery (CHAVIID), Scripps Research Institute, La Jolla, CA 92037, USA.
2. Department of Bioengineering and Therapeutic Sciences, Department of Pharmaceutical Chemistry, and California Institute for Quantitative Biosciences (QB3), University of California, San Francisco, CA 94158, USA.
3. Skaggs Institute for Chemical Biology, Scripps Research Institute, La Jolla, CA 92037, USA.