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==Crystal structure of the computationally optimized broadly reactive H1 influenza hemagglutinin P1==
<StructureSection load='7uyi' size='340' side='right'caption='[[7uyi]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7uyi]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus Influenza A virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7UYI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7UYI 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <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=7uyi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7uyi OCA], [https://pdbe.org/7uyi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7uyi RCSB], [https://www.ebi.ac.uk/pdbsum/7uyi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7uyi ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Influenza virus poses an ongoing human health threat with pandemic potential. Due to mutations in circulating strains, formulating effective vaccines remains a challenge. The use of computationally optimized broadly reactive antigen (COBRA) hemagglutinin (HA) proteins is a promising vaccine strategy to protect against a wide range of current and future influenza viruses. Though effective in preclinical studies, the mechanistic basis driving the broad reactivity of COBRA proteins remains to be elucidated. Here, we report the crystal structure of the COBRA HA termed P1 and identify antigenic and glycosylation properties that contribute to its immunogenicity. We further report the cryo-EM structure of the P1-elicited broadly neutralizing antibody 1F8 bound to COBRA P1, revealing 1F8 to recognize an atypical receptor binding site epitope via an unexpected mode of binding.

Structural insights into the broad protection against H1 influenza viruses by a computationally optimized hemagglutinin vaccine.,Dzimianski JV, Han J, Sautto GA, O'Rourke SM, Cruz JM, Pierce SR, Ecker JW, Carlock MA, Nagashima KA, Mousa JJ, Ross TM, Ward AB, DuBois RM Commun Biol. 2023 Apr 25;6(1):454. doi: 10.1038/s42003-023-04793-3. PMID:37185989<ref>PMID:37185989</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7uyi" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Influenza A virus]]
[[Category: Large Structures]]
[[Category: DuBois RM]]
[[Category: Dzimianski JV]]