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5e2y

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Revision as of 12:36, 6 November 2017

Crystal structure of H5 hemagglutinin Q226L mutant from the influenza virus A/duck/Egypt/10185SS/2010 (H5N1)

Structural highlights

5e2y is a 6 chain structure with sequence from Influenza a virus (a/duck/egypt/10185ss/2010(h5n1)). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	5e2z, 5e30, 5e32, 5e34, 5e35
Gene:	HA (Influenza A virus (A/duck/Egypt/10185SS/2010(H5N1)))
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[G8IPF0_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] 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).[SAAS:SAAS00204388]

Publication Abstract from PubMed

Avian H5N1 influenza viruses continue to spread in wild birds and domestic poultry with sporadic infection in humans. Receptor binding specificity changes are a prerequisite for H5N1 viruses and other zoonotic viruses to be transmitted among humans. Previous reported hemagglutinin (HA) mutants from ferret-transmissible H5N1 viruses of A/Vietnam/1203/2004 and A/Indonesia/5/2005 showed slightly increased, but still very weak, binding to human receptors. From mutagenesis and glycan array studies, we previously identified two H5N1 HA mutants that could more effectively switch receptor specificity to human-like alpha2-6-linked sialosides with avidity comparable to wild-type H5 HA binding to avian-like alpha2-3-linked sialosides. Here, crystal structures of these two H5 HA mutants free and in complex with human and avian glycan receptor analogs reveal the structural basis for their preferential binding to human receptors. These findings suggest continuous surveillance should be maintained to monitor and assess human-to-human transmission potential of H5N1 viruses.

Structural Basis for a Switch in Receptor Binding Specificity of Two H5N1 Hemagglutinin Mutants.,Zhu X, Viswanathan K, Raman R, Yu W, Sasisekharan R, Wilson IA Cell Rep. 2015 Nov 24;13(8):1683-91. doi: 10.1016/j.celrep.2015.10.027. Epub 2015, Nov 12. PMID:26586437^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Zhu X, Viswanathan K, Raman R, Yu W, Sasisekharan R, Wilson IA. Structural Basis for a Switch in Receptor Binding Specificity of Two H5N1 Hemagglutinin Mutants. Cell Rep. 2015 Nov 24;13(8):1683-91. doi: 10.1016/j.celrep.2015.10.027. Epub 2015, Nov 12. PMID:26586437 doi:http://dx.doi.org/10.1016/j.celrep.2015.10.027

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5e2y"

@@ Line 1: / Line 1: @@
 ==Crystal structure of H5 hemagglutinin Q226L mutant from the influenza virus A/duck/Egypt/10185SS/2010 (H5N1)==
 <StructureSection load='5e2y' size='340' side='right' caption='[[5e2y]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5e2y]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5E2Y OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5E2Y FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5e2y]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Influenza_a_virus_(a/duck/egypt/10185ss/2010(h5n1)) Influenza a virus (a/duck/egypt/10185ss/2010(h5n1))]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5E2Y OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5E2Y FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=FUL:BETA-L-FUCOSE'>FUL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5e2z|5e2z]], [[5e30|5e30]], [[5e32|5e32]], [[5e34|5e34]], [[5e35|5e35]]</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=5e2y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5e2y OCA], [http://pdbe.org/5e2y PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5e2y RCSB], [http://www.ebi.ac.uk/pdbsum/5e2y PDBsum]</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=1092915 Influenza A virus (A/duck/Egypt/10185SS/2010(H5N1))])</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=5e2y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5e2y OCA], [http://pdbe.org/5e2y PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5e2y RCSB], [http://www.ebi.ac.uk/pdbsum/5e2y PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5e2y ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 20: @@
 </div>
 <div class="pdbe-citations 5e2y" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Hemagglutinin|Hemagglutinin]]
 == References ==
 <references/>

5e2y

From Proteopedia

Revision as of 12:36, 6 November 2017

Crystal structure of H5 hemagglutinin Q226L mutant from the influenza virus A/duck/Egypt/10185SS/2010 (H5N1)

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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