View source for 9mqa


==Cryo-EM structure of hemagglutinin H5N1 in complex with Fab 310-7D11==
<StructureSection load='9mqa' size='340' side='right'caption='[[9mqa]], [[Resolution|resolution]] 3.22&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9mqa]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [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=9MQA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9MQA FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.22&#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=9mqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9mqa OCA], [https://pdbe.org/9mqa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9mqa RCSB], [https://www.ebi.ac.uk/pdbsum/9mqa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9mqa ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0AAX6NN08_9INFA A0AAX6NN08_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 either through clathrin-dependent endocytosis or through 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.[HAMAP-Rule:MF_04072]  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]
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Influenza A virus]]
[[Category: Large Structures]]
[[Category: Malla TN]]
[[Category: Tsybovsky Y]]
[[Category: Zhou T]]