View source for 6mxu


==Crystal structure of hemagglutinin from influenza virus A/Texas/1/1977 (H3N2)==
<StructureSection load='6mxu' size='340' side='right'caption='[[6mxu]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6mxu]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus_(A/Texas/1/1977(H3N2)) Influenza A virus (A/Texas/1/1977(H3N2))]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6MXU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6MXU 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]] 1.85&#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=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=6mxu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6mxu OCA], [https://pdbe.org/6mxu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6mxu RCSB], [https://www.ebi.ac.uk/pdbsum/6mxu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6mxu ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/H9XIU5_I77AH H9XIU5_I77AH] 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][SAAS:SAAS01039073]  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]

==See Also==
*[[Hemagglutinin 3D structures|Hemagglutinin 3D structures]]
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</StructureSection>
[[Category: Large Structures]]
[[Category: Dai YN]]
[[Category: Fremont DH]]