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==Crystal structure of broadly neutralizing antibody C05 bound to H3 influenza hemagglutinin==
==Crystal structure of broadly neutralizing antibody C05 bound to H3 influenza hemagglutinin==
<StructureSection load='4fqr' size='340' side='right' caption='[[4fqr]], [[Resolution|resolution]] 4.10&Aring;' scene=''>
<StructureSection load='4fqr' size='340' side='right'caption='[[4fqr]], [[Resolution|resolution]] 4.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4fqr]] is a 48 chain structure with sequence from [http://en.wikipedia.org/wiki/Influenza_a_virus_(a/hong_kong/1/1968(h3n2)) Influenza a virus (a/hong kong/1/1968(h3n2))]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FQR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FQR FirstGlance]. <br>
<table><tr><td colspan='2'>[[4fqr]] is a 48 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Influenza_A_virus_(A/Hong_Kong/1/1968(H3N2)) Influenza A virus (A/Hong Kong/1/1968(H3N2))]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FQR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FQR FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 4.1&#8491;</td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></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>, <scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4fnk|4fnk]], [[4fnl|4fnl]], [[4fp8|4fp8]]</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=4fqr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fqr OCA], [https://pdbe.org/4fqr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fqr RCSB], [https://www.ebi.ac.uk/pdbsum/4fqr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fqr ProSAT]</span></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=506350 Influenza A virus (A/Hong Kong/1/1968(H3N2))])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4fqr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fqr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4fqr RCSB], [http://www.ebi.ac.uk/pdbsum/4fqr PDBsum]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HEMA_I68A4 HEMA_I68A4] 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 (By similarity).
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<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 4fqr" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Antibody|Antibody]]
*[[Antibody 3D structures|Antibody 3D structures]]
*[[Hemagglutinin|Hemagglutinin]]
*[[Hemagglutinin 3D structures|Hemagglutinin 3D structures]]
*[[3D structures of human antibody|3D structures of human antibody]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Ekiert, D C]]
[[Category: Homo sapiens]]
[[Category: Wilson, I A]]
[[Category: Large Structures]]
[[Category: Immune recognition]]
[[Category: Ekiert DC]]
[[Category: Immunoglobulin]]
[[Category: Wilson IA]]
[[Category: Viral fusion protein]]
[[Category: Viral protein-immune system complex]]
[[Category: Virus attachment and entry]]

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