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. 2021 Jun 18;13(6):1171. doi: 10.3390/v13061171

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Tridimensional structure of Spike protein trimer in complex with host cell receptor ACE2. (a) 3D structure of Wuhan Strain Spike protein trimer; (b) 3D structure of Spike protein trimer of 20I/501Y.V1; (c) 3D structure of Spike protein trimer of 20H/501Y.V2; (d) 3D structure of Spike protein trimer of 20J/501Y.V3. S1 (Subunit 1); S2 (Subunit 2) [51].