7ejl: Difference between revisions
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==Complex Structure of HLA-A*2402 with the Peptide from HCoV(CoV-2) spike protein== | |||
<StructureSection load='7ejl' size='340' side='right'caption='[[7ejl]], [[Resolution|resolution]] 1.89Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7ejl]] is a 3 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=7EJL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EJL 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]] 1.89Å</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=7ejl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ejl OCA], [https://pdbe.org/7ejl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ejl RCSB], [https://www.ebi.ac.uk/pdbsum/7ejl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ejl ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/A0A5H2UYS3_HUMAN A0A5H2UYS3_HUMAN] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
SARS-CoV-2-specific CD8(+) T cells are scarce but detectable in unexposed healthy donors (UHDs). It remains unclear whether pre-existing human coronavirus (HCoV)-specific CD8(+) T cells are converted to functionally competent T cells cross-reactive to SARS-CoV-2. Here, we identified the HLA-A24-high binding, immunodominant epitopes in SARS-CoV-2 spike region that can be recognized by seasonal coronavirus-specific CD8(+) T cells from HLA-A24(+) UHDs. Cross-reactive CD8(+) T cells were clearly reduced in patients with hematological malignancy, who are usually immunosuppressed, compared to those in UHDs. Furthermore, we showed that CD8(+) T cells in response to a selected dominant epitope display multifunctionality and cross-functionality across HCoVs in HLA-A24(+) donors. Cross-reactivity of T-cell receptors isolated from them exhibited selective diversity at the single-cell level. Taken together, when stimulated well by immunodominant epitopes, selective pre-existing CD8(+) T cells with high functional avidity may be cross-reactive against SARS-CoV-2. | |||
Identification of TCR repertoires in functionally competent cytotoxic T cells cross-reactive to SARS-CoV-2.,Shimizu K, Iyoda T, Sanpei A, Nakazato H, Okada M, Ueda S, Kato-Murayama M, Murayama K, Shirouzu M, Harada N, Hidaka M, Fujii SI Commun Biol. 2021 Dec 2;4(1):1365. doi: 10.1038/s42003-021-02885-6. PMID:34857854<ref>PMID:34857854</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 7ejl" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]] | |||
*[[MHC 3D structures|MHC 3D structures]] | |||
*[[MHC I 3D structures|MHC I 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Severe acute respiratory syndrome coronavirus 2]] | |||
[[Category: Kato-Murayama M]] | |||
[[Category: Murayama K]] | |||
[[Category: Shirouzu M]] | |||
Latest revision as of 19:55, 29 November 2023
Complex Structure of HLA-A*2402 with the Peptide from HCoV(CoV-2) spike proteinComplex Structure of HLA-A*2402 with the Peptide from HCoV(CoV-2) spike protein
Structural highlights
FunctionPublication Abstract from PubMedSARS-CoV-2-specific CD8(+) T cells are scarce but detectable in unexposed healthy donors (UHDs). It remains unclear whether pre-existing human coronavirus (HCoV)-specific CD8(+) T cells are converted to functionally competent T cells cross-reactive to SARS-CoV-2. Here, we identified the HLA-A24-high binding, immunodominant epitopes in SARS-CoV-2 spike region that can be recognized by seasonal coronavirus-specific CD8(+) T cells from HLA-A24(+) UHDs. Cross-reactive CD8(+) T cells were clearly reduced in patients with hematological malignancy, who are usually immunosuppressed, compared to those in UHDs. Furthermore, we showed that CD8(+) T cells in response to a selected dominant epitope display multifunctionality and cross-functionality across HCoVs in HLA-A24(+) donors. Cross-reactivity of T-cell receptors isolated from them exhibited selective diversity at the single-cell level. Taken together, when stimulated well by immunodominant epitopes, selective pre-existing CD8(+) T cells with high functional avidity may be cross-reactive against SARS-CoV-2. Identification of TCR repertoires in functionally competent cytotoxic T cells cross-reactive to SARS-CoV-2.,Shimizu K, Iyoda T, Sanpei A, Nakazato H, Okada M, Ueda S, Kato-Murayama M, Murayama K, Shirouzu M, Harada N, Hidaka M, Fujii SI Commun Biol. 2021 Dec 2;4(1):1365. doi: 10.1038/s42003-021-02885-6. PMID:34857854[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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