Spanish Ministry of Science, Innovation, and Universities
PID2019-104757RB-I00
Spain
Spanish Ministry of Science, Innovation, and Universities
RTI2018-094399-A-I00
Spain
Spanish Ministry of Science, Innovation, and Universities
Grant SEV 2017-0712
Spain
H2020 Marie Curie Actions of the European Commission
MSCA IF 2020, Proposal: 101024130
Spain
European Research Council (ERC)
HighResCells, ERC - 2018 - SyG, Proposal: 810057
Spain
Spanish National Research Council
CSIC PTI Salud Global Proposal: 202080E110
Spain
European Research Council (ERC)
ERC CoG 101001038
Spain
Spanish Ministry of Science, Innovation, and Universities
SEJI/2019/011
Spain
Citation
Journal: PLoS Pathog / Year: 2022 Title: The structural role of SARS-CoV-2 genetic background in the emergence and success of spike mutations: The case of the spike A222V mutation. Authors: Tiziana Ginex / Clara Marco-Marín / Miłosz Wieczór / Carlos P Mata / James Krieger / Paula Ruiz-Rodriguez / Maria Luisa López-Redondo / Clara Francés-Gómez / Roberto Melero / Carlos ...Authors: Tiziana Ginex / Clara Marco-Marín / Miłosz Wieczór / Carlos P Mata / James Krieger / Paula Ruiz-Rodriguez / Maria Luisa López-Redondo / Clara Francés-Gómez / Roberto Melero / Carlos Óscar Sánchez-Sorzano / Marta Martínez / Nadine Gougeard / Alicia Forcada-Nadal / Sara Zamora-Caballero / Roberto Gozalbo-Rovira / Carla Sanz-Frasquet / Rocío Arranz / Jeronimo Bravo / Vicente Rubio / Alberto Marina / / Ron Geller / Iñaki Comas / Carmen Gil / Mireia Coscolla / Modesto Orozco / José Luis Llácer / Jose-Maria Carazo / Abstract: The S:A222V point mutation, within the G clade, was characteristic of the 20E (EU1) SARS-CoV-2 variant identified in Spain in early summer 2020. This mutation has since reappeared in the Delta ...The S:A222V point mutation, within the G clade, was characteristic of the 20E (EU1) SARS-CoV-2 variant identified in Spain in early summer 2020. This mutation has since reappeared in the Delta subvariant AY.4.2, raising questions about its specific effect on viral infection. We report combined serological, functional, structural and computational studies characterizing the impact of this mutation. Our results reveal that S:A222V promotes an increased RBD opening and slightly increases ACE2 binding as compared to the parent S:D614G clade. Finally, S:A222V does not reduce sera neutralization capacity, suggesting it does not affect vaccine effectiveness.
Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 283 K / Instrument: LEICA EM GP
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Electron microscopy
Microscope
FEI TALOS ARCTICA
Image recording
Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 4841 / Average exposure time: 20.0 sec. / Average electron dose: 32.4 e/Å2
Electron beam
Acceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
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