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7tca

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Cryo-EM structure of SARS-CoV-2 Omicron spike in complex with antibody A19-46.1

Structural highlights

7tca is a 7 chain structure with sequence from Homo sapiens and Severe acute respiratory syndrome coronavirus 2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	Electron Microscopy, Resolution 3.85Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Publication Abstract from PubMed

The rapid spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.529 (Omicron) variant and its resistance to neutralization by vaccinee and convalescent sera are driving a search for monoclonal antibodies with potent neutralization. To provide insight into effective neutralization, we determined cryo-electron microscopy structures and evaluated receptor binding domain (RBD) antibodies for their ability to bind and neutralize B.1.1.529. Mutations altered 16% of the B.1.1.529 RBD surface, clustered on an RBD ridge overlapping the angiotensin-converting enzyme 2 (ACE2)-binding surface and reduced binding of most antibodies. Substantial inhibitory activity was retained by select monoclonal antibodies-including A23-58.1, B1-182.1, COV2-2196, S2E12, A19-46.1, S309, and LY-CoV1404-that accommodated these changes and neutralized B.1.1.529. We identified combinations of antibodies with synergistic neutralization. The analysis revealed structural mechanisms for maintenance of potent neutralization against emerging variants.

Structural basis for potent antibody neutralization of SARS-CoV-2 variants including B.1.1.529.,Zhou T, Wang L, Misasi J, Pegu A, Zhang Y, Harris DR, Olia AS, Talana CA, Yang ES, Chen M, Choe M, Shi W, Teng IT, Creanga A, Jenkins C, Leung K, Liu T, Stancofski ED, Stephens T, Zhang B, Tsybovsky Y, Graham BS, Mascola JR, Sullivan NJ, Kwong PD Science. 2022 Apr 22;376(6591):eabn8897. doi: 10.1126/science.abn8897. Epub 2022 , Apr 22. PMID:35324257^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Zhou T, Wang L, Misasi J, Pegu A, Zhang Y, Harris DR, Olia AS, Talana CA, Yang ES, Chen M, Choe M, Shi W, Teng IT, Creanga A, Jenkins C, Leung K, Liu T, Stancofski ED, Stephens T, Zhang B, Tsybovsky Y, Graham BS, Mascola JR, Sullivan NJ, Kwong PD. Structural basis for potent antibody neutralization of SARS-CoV-2 variants including B.1.1.529. Science. 2022 Apr 22;376(6591):eabn8897. doi: 10.1126/science.abn8897. Epub 2022 , Apr 22. PMID:35324257 doi:http://dx.doi.org/10.1126/science.abn8897