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Structure-activity relationships of B.1.617 and other SARS-CoV-2 spike variants
Tzu-Jing Yang; Pei-Yu Yu; Yuan-Chih Chang; Ning-En Chang; Yu-Xi Tsai; Kang-Hao Liang; Piotr Draczkowski; Bertina Lin; Yong-Sheng Wang; Yu-Chun Chien; Kay-Hooi Khoo; Han-Chung Wu; Shang-Te Danny Hsu.
Afiliação
  • Tzu-Jing Yang; Institute of Biological Chemistry, Academia Sinica, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Pei-Yu Yu; Institute of Biological Chemistry, Academia Sinica
  • Yuan-Chih Chang; Institute of Biological Chemistry, Academia Sinica, Taiwan; Academia Sinica Cryo-EM Center, Academia Sinica, Taipei, Taiwan
  • Ning-En Chang; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Yu-Xi Tsai; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Kang-Hao Liang; Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan; Biomedical Translation Research Center (BioTReC), Academia Sinica, Taipei, Taiwan
  • Piotr Draczkowski; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Faculty of Pharmacy, Medical University of Lublin, ul. W. Chodzki 4a, 20-093 Lublin, Poland
  • Bertina Lin; Johns Hopkins University, Baltimore, MD, U.S.A.
  • Yong-Sheng Wang; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Yu-Chun Chien; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Kay-Hooi Khoo; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
  • Han-Chung Wu; Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan; Biomedical Translation Research Center (BioTReC), Academia Sinica, Taipei, Taiwan
  • Shang-Te Danny Hsu; Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
Preprint em En | PREPRINT-BIORXIV | ID: ppbiorxiv-459978
ABSTRACT
The surge of COVID-19 infection cases is spurred by emerging SARS-CoV-2 variants such as B.1.617. Here we report 38 cryo-EM structures, corresponding to the spike protein of the Beta (B.1.351), Gamma (P.1), Delta (B.1.617.2) and Kappa (B.1.617.1) variants in different functional states with and without its receptor, ACE2. Mutations on the N-terminal domain not only alter the conformation of the highly antigenic supersite of the Delta variant, but also remodel the glycan shield by deleting or adding N-glycans of the Delta and Gamma variants, respectively. Substantially enhanced ACE2 binding was observed for all variants, whose mutations on the receptor binding domain modulate the electrostatics of the binding interfaces. Despite their abilities to escape host immunity, all variants can be potently neutralized by three unique antibodies.
Licença
cc_by_nc
Texto completo: 1 Coleções: 09-preprints Base de dados: PREPRINT-BIORXIV Idioma: En Ano de publicação: 2021 Tipo de documento: Preprint
Texto completo: 1 Coleções: 09-preprints Base de dados: PREPRINT-BIORXIV Idioma: En Ano de publicação: 2021 Tipo de documento: Preprint