View source for 8dgv


==Crystal structure of MERS-CoV spike stem helix peptide in complex with Fab of broadly neutralizing antibody CC99.103 isolated from a vaccinated COVID-19 convalescent==
<StructureSection load='8dgv' size='340' side='right'caption='[[8dgv]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8dgv]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Betacoronavirus_England_1 Betacoronavirus England 1] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8DGV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8DGV 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]] 2.3&#8491;</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=8dgv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8dgv OCA], [https://pdbe.org/8dgv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8dgv RCSB], [https://www.ebi.ac.uk/pdbsum/8dgv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8dgv ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SPIKE_MERS1 SPIKE_MERS1] Attaches the virion to the cell membrane by interacting with host receptor, initiating the infection (By similarity). Interacts with host DPP4 to mediate virla entry.[HAMAP-Rule:MF_04099]<ref>PMID:23486063</ref>   Mediates fusion of the virion and cellular membranes by acting as a class I viral fusion protein. Under the current model, the protein has at least three 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) 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.[HAMAP-Rule:MF_04099]  Acts as a viral fusion peptide which is unmasked following S2 cleavage occurring upon virus endocytosis.[HAMAP-Rule:MF_04099]
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== Publication Abstract from PubMed ==
Pan-betacoronavirus neutralizing antibodies may hold the key to developing broadly protective vaccines against novel pandemic coronaviruses and to more effectively respond to SARS-CoV-2 variants. The emergence of Omicron and subvariants of SARS-CoV-2 illustrates the limitations of solely targeting the receptor-binding domain (RBD) of the spike (S) protein. Here, we isolated a large panel of broadly neutralizing antibodies (bnAbs) from SARS-CoV-2 recovered-vaccinated donors, which targets a conserved S2 region in the betacoronavirus spike fusion machinery. Select bnAbs showed broad in vivo protection against all three deadly betacoronaviruses, SARS-CoV-1, SARS-CoV-2, and MERS-CoV, which have spilled over into humans in the past two decades. Structural studies of these bnAbs delineated the molecular basis for their broad reactivity and revealed common antibody features targetable by broad vaccination strategies. These bnAbs provide new insights and opportunities for antibody-based interventions and for developing pan-betacoronavirus vaccines.

Broadly neutralizing anti-S2 antibodies protect against all three human betacoronaviruses that cause deadly disease.,Zhou P, Song G, Liu H, Yuan M, He WT, Beutler N, Zhu X, Tse LV, Martinez DR, Schafer A, Anzanello F, Yong P, Peng L, Dueker K, Musharrafieh R, Callaghan S, Capozzola T, Limbo O, Parren M, Garcia E, Rawlings SA, Smith DM, Nemazee D, Jardine JG, Safonova Y, Briney B, Rogers TF, Wilson IA, Baric RS, Gralinski LE, Burton DR, Andrabi R Immunity. 2023 Mar 14;56(3):669-686.e7. doi: 10.1016/j.immuni.2023.02.005. Epub , 2023 Feb 16. PMID:36889306<ref>PMID:36889306</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
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</StructureSection>
[[Category: Betacoronavirus England 1]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Liu H]]
[[Category: Wilson IA]]