7FAU
Structure Determination of the NB1B11-RBD Complex
Summary for 7FAU
| Entry DOI | 10.2210/pdb7fau/pdb |
| Descriptor | Spike protein S1, NB_1B11, ZINC ION, ... (4 entities in total) |
| Functional Keywords | sars-cov-2, rbd, nanobody, structural protein |
| Biological source | Severe acute respiratory syndrome coronavirus 2 (2019-nCoV, SARS-CoV-2) More |
| Total number of polymer chains | 4 |
| Total formula weight | 76059.82 |
| Authors | Shi, Z.Z.,Li, X.X.,Wang, L.,Sun, Z.C.,Zhang, H.W.,Chen, X.C.,Cui, Q.Q.,Qiao, H.R.,Lan, Z.Y.,Zhang, X. (deposition date: 2021-07-07, release date: 2022-06-01, Last modification date: 2024-11-20) |
| Primary citation | Shi, Z.,Li, X.,Wang, L.,Sun, Z.,Zhang, H.,Chen, X.,Cui, Q.,Qiao, H.,Lan, Z.,Zhang, X.,Li, X.,Li, L.,Xu, J.,Gong, R.,Fan, C.,Geng, Y. Structural basis of nanobodies neutralizing SARS-CoV-2 variants. Structure, 30:707-720.e5, 2022 Cited by PubMed Abstract: Because of the evolutionary variants of SARS-CoV-2, development of broad-spectrum neutralizing antibodies resilient to virus escape is urgently needed. We identified a group of high-affinity nanobodies from camels immunized with receptor-binding domain (RBD) of SARS-CoV-2 spike protein and resolved the structures of two non-competing nanobodies (NB1A7 and NB1B11) in complex with RBD using X-ray crystallography. The structures show that NB1A7 targets the highly conserved cryptic epitope shared by SARS-CoV-2 variants and some other coronaviruses and blocks ACE2 receptor attachment of the spike protein, and NB1B11 epitope overlaps with the contacting surface of ACE2 and is different from the binding site of NB1A7. These two nanobodies were covalently linked into multivalent and bi-paratopic formats, which significantly improved the avidity and neutralization potency and may further inhibit viral escape. The results contribute to the structure-guided design of antibodies against future variants of SARS-CoV-2 virus to combat coronavirus epidemics and pandemics. PubMed: 35276082DOI: 10.1016/j.str.2022.02.011 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.08 Å) |
Structure validation
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