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==== | ==SARS-CoV-2 NTD in complex with N9 Fab== | ||
<StructureSection load='7e8f' size='340' side='right'caption='[[7e8f]]' scene=''> | <StructureSection load='7e8f' size='340' side='right'caption='[[7e8f]], [[Resolution|resolution]] 3.18Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol= FirstGlance]. <br> | <table><tr><td colspan='2'>[[7e8f]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndrome_coronavirus_2 Severe acute respiratory syndrome coronavirus 2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7E8F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7E8F FirstGlance]. <br> | ||
</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=7e8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7e8f OCA], [https://pdbe.org/7e8f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7e8f RCSB], [https://www.ebi.ac.uk/pdbsum/7e8f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7e8f ProSAT]</span></td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.18Å</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=7e8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7e8f OCA], [https://pdbe.org/7e8f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7e8f RCSB], [https://www.ebi.ac.uk/pdbsum/7e8f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7e8f ProSAT]</span></td></tr> | |||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
SARS-CoV-2 variants could induce immune escape by mutations on the receptor-binding domain (RBD) and N-terminal domain (NTD). Here we report the humoral immune response to circulating SARS-CoV-2 variants, such as 501Y.V2 (B.1.351), of the plasma and neutralizing antibodies (NAbs) elicited by CoronaVac (inactivated vaccine), ZF2001 (RBD-subunit vaccine) and natural infection. Among 86 potent NAbs identified by high-throughput single-cell VDJ sequencing of peripheral blood mononuclear cells from vaccinees and convalescents, near half anti-RBD NAbs showed major neutralization reductions against the K417N/E484K/N501Y mutation combination, with E484K being the dominant cause. VH3-53/VH3-66 recurrent antibodies respond differently to RBD variants, and K417N compromises the majority of neutralizing activity through reduced polar contacts with complementarity determining regions. In contrast, the 242-244 deletion (242-244Delta) would abolish most neutralization activity of anti-NTD NAbs by interrupting the conformation of NTD antigenic supersite, indicating a much less diversity of anti-NTD NAbs than anti-RBD NAbs. Plasma of convalescents and CoronaVac vaccinees displayed comparable neutralization reductions against pseudo- and authentic 501Y.V2 variants, mainly caused by E484K/N501Y and 242-244Delta, with the effects being additive. Importantly, RBD-subunit vaccinees exhibit markedly higher tolerance to 501Y.V2 than convalescents, since the elicited anti-RBD NAbs display a high diversity and are unaffected by NTD mutations. Moreover, an extended gap between the third and second doses of ZF2001 leads to better neutralizing activity and tolerance to 501Y.V2 than the standard three-dose administration. Together, these results suggest that the deployment of RBD-vaccines, through a third-dose boost, may be ideal for combating SARS-CoV-2 variants when necessary, especially for those carrying mutations that disrupt the NTD supersite. | |||
Humoral immune response to circulating SARS-CoV-2 variants elicited by inactivated and RBD-subunit vaccines.,Cao Y, Yisimayi A, Bai Y, Huang W, Li X, Zhang Z, Yuan T, An R, Wang J, Xiao T, Du S, Ma W, Song L, Li Y, Li X, Song W, Wu J, Liu S, Li X, Zhang Y, Su B, Guo X, Wei Y, Gao C, Zhang N, Zhang Y, Dou Y, Xu X, Shi R, Lu B, Jin R, Ma Y, Qin C, Wang Y, Feng Y, Xiao J, Xie XS Cell Res. 2021 Jul;31(7):732-741. doi: 10.1038/s41422-021-00514-9. Epub 2021 May , 21. PMID:34021265<ref>PMID:34021265</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 7e8f" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Antibody 3D structures|Antibody 3D structures]] | |||
*[[Spike protein 3D structures|Spike protein 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Z | [[Category: Severe acute respiratory syndrome coronavirus 2]] | ||
[[Category: Du S]] | |||
[[Category: Xiao J]] | |||
[[Category: Zhang Z]] | |||
Latest revision as of 11:41, 17 October 2024
SARS-CoV-2 NTD in complex with N9 FabSARS-CoV-2 NTD in complex with N9 Fab
Structural highlights
Publication Abstract from PubMedSARS-CoV-2 variants could induce immune escape by mutations on the receptor-binding domain (RBD) and N-terminal domain (NTD). Here we report the humoral immune response to circulating SARS-CoV-2 variants, such as 501Y.V2 (B.1.351), of the plasma and neutralizing antibodies (NAbs) elicited by CoronaVac (inactivated vaccine), ZF2001 (RBD-subunit vaccine) and natural infection. Among 86 potent NAbs identified by high-throughput single-cell VDJ sequencing of peripheral blood mononuclear cells from vaccinees and convalescents, near half anti-RBD NAbs showed major neutralization reductions against the K417N/E484K/N501Y mutation combination, with E484K being the dominant cause. VH3-53/VH3-66 recurrent antibodies respond differently to RBD variants, and K417N compromises the majority of neutralizing activity through reduced polar contacts with complementarity determining regions. In contrast, the 242-244 deletion (242-244Delta) would abolish most neutralization activity of anti-NTD NAbs by interrupting the conformation of NTD antigenic supersite, indicating a much less diversity of anti-NTD NAbs than anti-RBD NAbs. Plasma of convalescents and CoronaVac vaccinees displayed comparable neutralization reductions against pseudo- and authentic 501Y.V2 variants, mainly caused by E484K/N501Y and 242-244Delta, with the effects being additive. Importantly, RBD-subunit vaccinees exhibit markedly higher tolerance to 501Y.V2 than convalescents, since the elicited anti-RBD NAbs display a high diversity and are unaffected by NTD mutations. Moreover, an extended gap between the third and second doses of ZF2001 leads to better neutralizing activity and tolerance to 501Y.V2 than the standard three-dose administration. Together, these results suggest that the deployment of RBD-vaccines, through a third-dose boost, may be ideal for combating SARS-CoV-2 variants when necessary, especially for those carrying mutations that disrupt the NTD supersite. Humoral immune response to circulating SARS-CoV-2 variants elicited by inactivated and RBD-subunit vaccines.,Cao Y, Yisimayi A, Bai Y, Huang W, Li X, Zhang Z, Yuan T, An R, Wang J, Xiao T, Du S, Ma W, Song L, Li Y, Li X, Song W, Wu J, Liu S, Li X, Zhang Y, Su B, Guo X, Wei Y, Gao C, Zhang N, Zhang Y, Dou Y, Xu X, Shi R, Lu B, Jin R, Ma Y, Qin C, Wang Y, Feng Y, Xiao J, Xie XS Cell Res. 2021 Jul;31(7):732-741. doi: 10.1038/s41422-021-00514-9. Epub 2021 May , 21. PMID:34021265[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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