Your browser doesn't support javascript.
loading
COVID-19 dominant D614G mutation in the SARS-CoV-2 spike protein desensitizes its temperature-dependent denaturation
Tzu-Jing Yang; Pei-Yu Yu; Yuan-Chih Chang; Chu-Wei Kuo; Kay-Hooi Khoo; Shang-Te Danny Hsu.
Afiliação
  • Tzu-Jing Yang; Institute of Biological Chemistry, Academia Sinica, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taiwan
  • Pei-Yu Yu; Institute of Biological Chemistry, Academia Sinica, Taiwan
  • Yuan-Chih Chang; Institute of Biological Chemistry, Academia Sinica, Taiwan; Academia Sinica Cryo-EM Center, Academia Sinica, Taiwan
  • Chu-Wei Kuo; Institute of Biological Chemistry, Academia Sinica, Taiwan
  • Kay-Hooi Khoo; Institute of Biological Chemistry, Academia Sinica, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taiwan
  • Shang-Te Danny Hsu; Institute of Biological Chemistry, Academia Sinica, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taiwan
Preprint em Inglês | bioRxiv | ID: ppbiorxiv-437426
ABSTRACT
The D614G mutation in the spike protein of SARS-CoV-2 alters the fitness of the virus, making it the dominant form in the COVID-19 pandemic. Here we demonstrated by cryo-electron microscopy that the D614G mutation does not significantly perturb the structure of the spike protein, but multiple receptor binding domains are in an upward conformation poised for host receptor binding. The impact of the mutation lies in its ability to eliminate the unusual cold-induced unfolding characteristics, and to significantly increase the thermal stability under physiological pH. Our findings shed light on how the D614G mutation enhances the infectivity of SARS-CoV-2 through a stabilizing mutation, and suggest an approach for better design of spike-protein based conjugates for vaccine development.
Licença
cc_by_nc_nd
Texto completo: Disponível Coleções: Preprints Base de dados: bioRxiv Idioma: Inglês Ano de publicação: 2021 Tipo de documento: Preprint
Texto completo: Disponível Coleções: Preprints Base de dados: bioRxiv Idioma: Inglês Ano de publicação: 2021 Tipo de documento: Preprint
...