1. Moderna, Inc., Cambridge, Massachusetts 02139, United States
2. Theoretical and Computational Biophysics Group, NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, Department of Biochemistry, and Center for Biophysics and Quantitative Biology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61820, United States
3. Department of Biochemistry and Biophysics, University of Rochester Medical Center, Rochester, New York 14642, United States