View source for 4web


==Structure of the core ectodomain of the hepatitis C virus envelope glycoprotein 2==
<StructureSection load='4web' size='340' side='right'caption='[[4web]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4web]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Hepatitis_C_virus_subtype_2a Hepatitis C virus subtype 2a] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4nx3 4nx3]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WEB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WEB 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]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ARF:FORMAMIDE'>ARF</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=4web FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4web OCA], [https://pdbe.org/4web PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4web RCSB], [https://www.ebi.ac.uk/pdbsum/4web PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4web ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q9QF35_9HEPC Q9QF35_9HEPC] 
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== Publication Abstract from PubMed ==
Hepatitis C virus (HCV) is a significant public health concern with approximately 160 million people infected worldwide. HCV infection often results in chronic hepatitis, liver cirrhosis and hepatocellular carcinoma. No vaccine is available and current therapies are effective against some, but not all, genotypes. HCV is an enveloped virus with two surface glycoproteins (E1 and E2). E2 binds to the host cell through interactions with scavenger receptor class B type I (SR-BI) and CD81, and serves as a target for neutralizing antibodies. Little is known about the molecular mechanism that mediates cell entry and membrane fusion, although E2 is predicted to be a class II viral fusion protein. Here we describe the structure of the E2 core domain in complex with an antigen-binding fragment (Fab) at 2.4 A resolution. The E2 core has a compact, globular domain structure, consisting mostly of beta-strands and random coil with two small alpha-helices. The strands are arranged in two, perpendicular sheets (A and B), which are held together by an extensive hydrophobic core and disulphide bonds. Sheet A has an IgG-like fold that is commonly found in viral and cellular proteins, whereas sheet B represents a novel fold. Solution-based studies demonstrate that the full-length E2 ectodomain has a similar globular architecture and does not undergo significant conformational or oligomeric rearrangements on exposure to low pH. Thus, the IgG-like fold is the only feature that E2 shares with class II membrane fusion proteins. These results provide unprecedented insights into HCV entry and will assist in developing an HCV vaccine and new inhibitors.

Structure of the core ectodomain of the hepatitis C virus envelope glycoprotein 2.,Khan AG, Whidby J, Miller MT, Scarborough H, Zatorski AV, Cygan A, Price AA, Yost SA, Bohannon CD, Jacob J, Grakoui A, Marcotrigiano J Nature. 2014 Feb 19. doi: 10.1038/nature13117. PMID:24553139<ref>PMID:24553139</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 4web" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Hepatitis C virus subtype 2a]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Bohannon CD]]
[[Category: Cygan A]]
[[Category: Grakoui A]]
[[Category: Jacob J]]
[[Category: Khan AG]]
[[Category: Marcotrigiano J]]
[[Category: Miller MT]]
[[Category: Price AA]]
[[Category: Scarborough H]]
[[Category: Whidby J]]
[[Category: Yost SA]]
[[Category: Zatorski AV]]