Choe, Hyeryun, and Michael Farzan. ‘How SARS-CoV-2 First Adapted in Humans’. Science 372, no. 6541 (30 April 2021): 466–67. https://doi.org/10.1126/science.abi4711.

Hodcroft, E. B., Domman, D. B., Oguntuyo, K., Snyder, D. J., Diest, M. V., Densmore, K. H., Schwalm, K. C., Femling, J., Carroll, J. L., Scott, R. S., Whyte, M. M., Edwards, M. D., Hull, N. C., Kevil, C. G., Vanchiere, J. A., Lee, B., Dinwiddie, D. L., Cooper, V. S., & Kamil, J. P. (2021). Emergence in late 2020 of multiple lineages of SARS-CoV-2 Spike protein variants affecting amino acid position 677. MedRxiv, 2021.02.12.21251658. https://doi.org/10.1101/2021.02.12.21251658

Starr, T. N., Greaney, A. J., Hilton, S. K., Crawford, K. H., Navarro, M. J., Bowen, J. E., Tortorici, M. A., Walls, A. C., Veesler, D., & Bloom, J. D. (2020). Deep mutational scanning of SARS-CoV-2 receptor binding domain reveals constraints on folding and ACE2 binding [Preprint]. Microbiology. https://doi.org/10.1101/2020.06.17.157982

Bloom Lab. (2020, June 18). "We've experimentally measured how all amino-acid mutations to the #SARSCoV2 spike RBD affect ACE2 binding and expression of folded protein in a deep mutational scanning study led by @tylernstarr & Allie Greaney:https://biorxiv.org/content/10.1101/2020.06.17.157982v1 Why is this important? (1/n)" Twitter. https://twitter.com/jbloom_lab/status/1273468539484213248