1. Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.
2. Vir Biotechnology, San Francisco, CA 94158, USA.
3. Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA.
4. Cambridge Institute for Medical Research, Department of Haematology, University of Cambridge, Cambridge, UK.
5. Molecular Biology Consortium, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
6. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
7. Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA.
8. Humabs Biomed SA, a subsidiary of Vir Biotechnology, 6500 Bellinzona, Switzerland.