View source for 9phq


==Crystal structure of the A/Puerto Rico/8/1934 (H1N1) influenza virus hemagglutinin in complex with fusion inhibitor cyclic peptide CP141088 (CP14)==
<StructureSection load='9phq' size='340' side='right'caption='[[9phq]], [[Resolution|resolution]] 2.87&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9phq]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_A_virus_(A/Puerto_Rico/8/1934(H1N1)) Influenza A virus (A/Puerto Rico/8/1934(H1N1))] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9PHQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9PHQ 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]] 2.87&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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=9phq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9phq OCA], [https://pdbe.org/9phq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9phq RCSB], [https://www.ebi.ac.uk/pdbsum/9phq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9phq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/HEMA_I34A1 HEMA_I34A1] 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]
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</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Kadam RU]]
[[Category: Wilson IA]]