View source for 6fyu


==Structure of H7(A/Shanghai/2/2013) Influenza Hemagglutinin in complex SD36==
<StructureSection load='6fyu' size='340' side='right'caption='[[6fyu]], [[Resolution|resolution]] 2.64&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6fyu]] is a 9 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus Influenza A virus] and [https://en.wikipedia.org/wiki/Lama_glama Lama glama]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FYU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6FYU 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]] 2.643&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</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=6fyu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fyu OCA], [https://pdbe.org/6fyu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6fyu RCSB], [https://www.ebi.ac.uk/pdbsum/6fyu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6fyu ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A097PHH8_9INFA A0A097PHH8_9INFA] Binds to sialic acid-containing receptors on the cell surface, bringing about the attachment of the virus particle to the cell. This attachment induces virion internalization of about two third of the virus particles through clathrin-dependent endocytosis and about one third through a clathrin- and caveolin-independent pathway. Plays a major role in the determination of host range restriction and virulence. Class I viral fusion protein. Responsible for penetration of the virus into the cell cytoplasm by mediating the fusion of the membrane of the endocytosed virus particle with the endosomal membrane. Low pH in endosomes induces an irreversible conformational change in HA2, releasing the fusion hydrophobic peptide. Several trimers are required to form a competent fusion pore.[RuleBase:RU003324][SAAS:SAAS00046902]
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== Publication Abstract from PubMed ==
Broadly neutralizing antibodies against highly variable pathogens have stimulated the design of vaccines and therapeutics. We report the use of diverse camelid single-domain antibodies to influenza virus hemagglutinin to generate multidomain antibodies with impressive breadth and potency. Multidomain antibody MD3606 protects mice against influenza A and B infection when administered intravenously or expressed locally from a recombinant adeno-associated virus vector. Crystal and single-particle electron microscopy structures of these antibodies with hemagglutinins from influenza A and B viruses reveal binding to highly conserved epitopes. Collectively, our findings demonstrate that multidomain antibodies targeting multiple epitopes exhibit enhanced virus cross-reactivity and potency. In combination with adeno-associated virus-mediated gene delivery, they may provide an effective strategy to prevent infection with influenza virus and other highly variable pathogens.

Universal protection against influenza infection by a multidomain antibody to influenza hemagglutinin.,Laursen NS, Friesen RHE, Zhu X, Jongeneelen M, Blokland S, Vermond J, van Eijgen A, Tang C, van Diepen H, Obmolova G, van der Neut Kolfschoten M, Zuijdgeest D, Straetemans R, Hoffman RMB, Nieusma T, Pallesen J, Turner HL, Bernard SM, Ward AB, Luo J, Poon LLM, Tretiakova AP, Wilson JM, Limberis MP, Vogels R, Brandenburg B, Kolkman JA, Wilson IA Science. 2018 Nov 2;362(6414):598-602. doi: 10.1126/science.aaq0620. PMID:30385580<ref>PMID:30385580</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 6fyu" style="background-color:#fffaf0;"></div>

==See Also==
*[[Antibody 3D structures|Antibody 3D structures]]
*[[Hemagglutinin 3D structures|Hemagglutinin 3D structures]]
*[[3D structures of non-human antibody|3D structures of non-human antibody]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Influenza A virus]]
[[Category: Lama glama]]
[[Category: Large Structures]]
[[Category: Laursen NS]]
[[Category: Wilson IA]]