2rft: Difference between revisions

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<StructureSection load='2rft' size='340' side='right'caption='[[2rft]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
<StructureSection load='2rft' size='340' side='right'caption='[[2rft]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2rft]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RFT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2RFT FirstGlance]. <br>
<table><tr><td colspan='2'>[[2rft]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Influenza_B_virus_(B/Hong_Kong/8/1973) Influenza B virus (B/Hong Kong/8/1973)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RFT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2RFT FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</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]] 2.8&#8491;</td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SIA:O-SIALIC+ACID'>SIA</scene></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>, <scene name='pdbligand=SIA:O-SIALIC+ACID'>SIA</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2rfu|2rfu]]</div></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=2rft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rft OCA], [https://pdbe.org/2rft PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2rft RCSB], [https://www.ebi.ac.uk/pdbsum/2rft PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2rft ProSAT]</span></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=2rft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rft OCA], [https://pdbe.org/2rft PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2rft RCSB], [https://www.ebi.ac.uk/pdbsum/2rft PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2rft ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/Q84097_9INFB Q84097_9INFB]] 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).[RuleBase:RU003324]  
[https://www.uniprot.org/uniprot/HEMA_INBHK HEMA_INBHK] Binds to sialic acid-containing receptors on the cell surface, bringing about the attachment of the virus particle to the cell. 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 induce 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]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2rft ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2rft ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Receptor-binding specificity of HA, the major surface glycoprotein of influenza virus, primarily determines the host ranges that the virus can infect. Influenza type B virus almost exclusively infects humans and contributes to the annual "flu" sickness. Here we report the structures of influenza B virus HA in complex with human and avian receptor analogs, respectively. These structures provide a structural basis for the different receptor-binding properties of influenza A and B virus HA molecules and for the ability of influenza B virus HA to distinguish human and avian receptors. The structure of influenza B virus HA with avian receptor analog also reveals how mutations in the region of residues 194 to 196, which are frequently observed in egg-adapted and naturally occurring variants, directly affect the receptor binding of the resultant virus strains. Furthermore, these structures of influenza B virus HA are compared with known structures of influenza A virus HAs, which suggests the role of the residue at 222 as a key and likely a universal determinant for the different binding modes of human receptor analogs by different HA molecules.
Structural basis for receptor specificity of influenza B virus hemagglutinin.,Wang Q, Tian X, Chen X, Ma J Proc Natl Acad Sci U S A. 2007 Oct 23;104(43):16874-9. Epub 2007 Oct 17. PMID:17942670<ref>PMID:17942670</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2rft" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Hemagglutinin 3D structures|Hemagglutinin 3D structures]]
*[[Hemagglutinin 3D structures|Hemagglutinin 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Chen, X]]
[[Category: Chen X]]
[[Category: Ma, J]]
[[Category: Ma J]]
[[Category: Tian, X]]
[[Category: Tian X]]
[[Category: Wang, Q]]
[[Category: Wang Q]]
[[Category: Envelope protein]]
[[Category: Fusion protein]]
[[Category: Glycoprotein]]
[[Category: Hemagglutinin]]
[[Category: Influenza]]
[[Category: Lipoprotein]]
[[Category: Membrane]]
[[Category: Palmitate]]
[[Category: Receptor specificity]]
[[Category: Transmembrane]]
[[Category: Viral protein]]
[[Category: Virion]]

Revision as of 06:32, 3 April 2024

Crystal structure of influenza B virus hemagglutinin in complex with LSTa receptor analog

2rft, resolution 2.80Å

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