ジャーナル: Nat Struct Mol Biol / 年: 2020 タイトル: Structural basis for the neutralization of SARS-CoV-2 by an antibody from a convalescent patient. 著者: Daming Zhou / Helen M E Duyvesteyn / Cheng-Pin Chen / Chung-Guei Huang / Ting-Hua Chen / Shin-Ru Shih / Yi-Chun Lin / Chien-Yu Cheng / Shu-Hsing Cheng / Yhu-Chering Huang / Tzou-Yien Lin / ...著者: Daming Zhou / Helen M E Duyvesteyn / Cheng-Pin Chen / Chung-Guei Huang / Ting-Hua Chen / Shin-Ru Shih / Yi-Chun Lin / Chien-Yu Cheng / Shu-Hsing Cheng / Yhu-Chering Huang / Tzou-Yien Lin / Che Ma / Jiandong Huo / Loic Carrique / Tomas Malinauskas / Reinis R Ruza / Pranav N M Shah / Tiong Kit Tan / Pramila Rijal / Robert F Donat / Kerry Godwin / Karen R Buttigieg / Julia A Tree / Julika Radecke / Neil G Paterson / Piyada Supasa / Juthathip Mongkolsapaya / Gavin R Screaton / Miles W Carroll / Javier Gilbert-Jaramillo / Michael L Knight / William James / Raymond J Owens / James H Naismith / Alain R Townsend / Elizabeth E Fry / Yuguang Zhao / Jingshan Ren / David I Stuart / Kuan-Ying A Huang / 要旨: The COVID-19 pandemic has had an unprecedented health and economic impact and there are currently no approved therapies. We have isolated an antibody, EY6A, from an individual convalescing from COVID- ...The COVID-19 pandemic has had an unprecedented health and economic impact and there are currently no approved therapies. We have isolated an antibody, EY6A, from an individual convalescing from COVID-19 and have shown that it neutralizes SARS-CoV-2 and cross-reacts with SARS-CoV-1. EY6A Fab binds the receptor binding domain (RBD) of the viral spike glycoprotein tightly (K of 2 nM), and a 2.6-Å-resolution crystal structure of an RBD-EY6A Fab complex identifies the highly conserved epitope, away from the ACE2 receptor binding site. Residues within this footprint are key to stabilizing the pre-fusion spike. Cryo-EM analyses of the pre-fusion spike incubated with EY6A Fab reveal a complex of the intact spike trimer with three Fabs bound and two further multimeric forms comprising the destabilized spike attached to Fab. EY6A binds what is probably a major neutralizing epitope, making it a candidate therapeutic for COVID-19.