View source for 7vng


==Crystal structure of human coronavirus 229E spike protein receptor-binding domain in complex with S11 Fab==
<StructureSection load='7vng' size='340' side='right'caption='[[7vng]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7vng]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Human_coronavirus_229E Human coronavirus 229E]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7VNG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7VNG FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7vng FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7vng OCA], [https://pdbe.org/7vng PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7vng RCSB], [https://www.ebi.ac.uk/pdbsum/7vng PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7vng ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SPIKE_CVH22 SPIKE_CVH22] S1 region attaches the virion to the cell membrane by interacting with human ANPEP/aminopeptidase N, initiating the infection. Binding to the receptor probably induces conformational changes in the S glycoprotein unmasking the fusion peptide of S2 region and activating membranes fusion. S2 region belongs to the class I viral fusion protein. Under the current model, the protein has at least 3 conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During viral and target cell membrane fusion, the coiled coil regions (heptad repeats) regions assume a trimer-of-hairpins structure, positioning the fusion peptide in close proximity to the C-terminal region of the ectodomain. The formation of this structure appears to drive apposition and subsequent fusion of viral and target cell membranes (By similarity).
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== Publication Abstract from PubMed ==
Understanding the antigenic signatures of all human coronaviruses (HCoVs) Spike (S) proteins is imperative for pan-HCoV epitopes identification and broadly effective vaccine development. To depict the currently elusive antigenic signatures of alpha-HCoVs S proteins, we isolated a panel of antibodies against the HCoV-229E S protein and characterized their epitopes and neutralizing potential. We found that the N-terminal domain of HCoV-229E S protein is antigenically dominant wherein an antigenic supersite is present and appears conserved in HCoV-NL63, which holds potential to serve as a pan-alpha-HCoVs epitope. In the receptor binding domain, a neutralizing epitope is captured in the end distal to the receptor binding site, reminiscent of the locations of the SARS-CoV-2 RBD cryptic epitopes. We also identified a neutralizing antibody that recognizes the connector domain, thus representing the first S2-directed neutralizing antibody against alpha-HCoVs. The unraveled HCoVs S proteins antigenic similarities and variances among genera highlight the challenges faced by pan-HCoV vaccine design while supporting the feasibility of broadly effective vaccine development against a subset of HCoVs.

Antigenic mapping reveals sites of vulnerability on alpha-HCoV spike protein.,Xiang J, Su J, Lan Q, Zhao W, Zhou Y, Xu Y, Niu J, Xia S, Qi Q, Sidhu S, Lu L, Miersch S, Yang B Commun Biol. 2022 Nov 4;5(1):1179. doi: 10.1038/s42003-022-04160-8. PMID:36333470<ref>PMID:36333470</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 7vng" style="background-color:#fffaf0;"></div>

==See Also==
*[[Spike protein 3D structures|Spike protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Human coronavirus 229E]]
[[Category: Large Structures]]
[[Category: Xiang JC]]
[[Category: Yang B]]
[[Category: Zhao WW]]