View source for 7s8q


==Crystal Structure of HLA A*1101 in complex with KTNGNAFIGK, an 10-mer epitope from Influenza B==
<StructureSection load='7s8q' size='340' side='right'caption='[[7s8q]], [[Resolution|resolution]] 2.08&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7s8q]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Influenza_B_virus Influenza B virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7S8Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7S8Q 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]] 2.08&#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=7s8q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7s8q OCA], [https://pdbe.org/7s8q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7s8q RCSB], [https://www.ebi.ac.uk/pdbsum/7s8q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7s8q ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/U5YJK1_HUMAN U5YJK1_HUMAN] 
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== Publication Abstract from PubMed ==
HLA-A*11:01 is one of the most prevalent human leukocyte antigens (HLAs), especially in East Asian and Oceanian populations. It is also highly expressed in Indigenous people who are at high risk of severe influenza disease. As CD8+ T cells can provide broadly cross-reactive immunity to distinct influenza strains and subtypes, including influenza A, B and C viruses, understanding CD8+ T cell immunity to influenza viruses across prominent HLA types is needed to rationally design a universal influenza vaccine and generate protective immunity especially for high-risk populations. As only a handful of HLA-A*11:01-restricted CD8+ T cell epitopes have been described for influenza A viruses (IAVs) and epitopes for influenza B viruses (IBVs) were still unknown, we embarked on an epitope discovery study to define a CD8+ T cell landscape for HLA-A*11:01-expressing Indigenous and non-Indigenous Australian people. Using mass-spectrometry, we identified IAV- and IBV-derived peptides presented by HLA-A*11:01 during infection. 79 IAV and 57 IBV peptides were subsequently screened for immunogenicity in vitro with peripheral blood mononuclear cells from HLA-A*11:01-expressing Indigenous and non-Indigenous Australian donors. CD8+ T cell immunogenicity screening revealed two immunogenic IAV epitopes (A11/PB2320-331 and A11/PB2323-331) and the first HLA-A*11:01-restricted IBV epitopes (A11/M41-49, A11/NS1186-195 and A11/NP511-520). The immunogenic IAV- and IBV-derived peptides were &gt;90% conserved among their respective influenza viruses. Identification of novel immunogenic HLA-A*11:01-restricted CD8+ T cell epitopes has implications for understanding how CD8+ T cell immunity is generated towards IAVs and IBVs. These findings can inform the development of rationally designed, broadly cross-reactive influenza vaccines to ensure protection from severe influenza disease in HLA-A*11:01-expressing individuals.

HLA-A*11:01-restricted CD8+ T cell immunity against influenza A and influenza B viruses in Indigenous and non-Indigenous people.,Habel JR, Nguyen AT, Rowntree LC, Szeto C, Mifsud NA, Clemens EB, Loh L, Chen W, Rockman S, Nelson J, Davies J, Miller A, Tong SYC, Rossjohn J, Gras S, Purcell AW, Hensen L, Kedzierska K, Illing PT PLoS Pathog. 2022 Mar 7;18(3):e1010337. doi: 10.1371/journal.ppat.1010337. , eCollection 2022 Mar. PMID:35255101<ref>PMID:35255101</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 7s8q" style="background-color:#fffaf0;"></div>

==See Also==
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Influenza B virus]]
[[Category: Large Structures]]
[[Category: Gras S]]
[[Category: Nguyen AT]]
[[Category: Szeto C]]