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3mko

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==Crystal Structure of the Lymphocytic Choriomeningitis Virus Membrane Fusion Glycoprotein GP2 in its Postfusion Conformation==
==Crystal Structure of the Lymphocytic Choriomeningitis Virus Membrane Fusion Glycoprotein GP2 in its Postfusion Conformation==
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<StructureSection load='3mko' size='340' side='right' caption='[[3mko]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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<StructureSection load='3mko' size='340' side='right'caption='[[3mko]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3mko]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lcmv Lcmv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MKO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MKO FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3mko]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Lymphocytic_choriomeningitis_mammarenavirus Lymphocytic choriomeningitis mammarenavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MKO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3MKO FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IUM:URANYL+(VI)+ION'>IUM</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lcmv-GP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11623 LCMV])</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IUM:URANYL+(VI)+ION'>IUM</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene></td></tr>
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<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=3mko FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mko OCA], [http://pdbe.org/3mko PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3mko RCSB], [http://www.ebi.ac.uk/pdbsum/3mko PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3mko ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3mko FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mko OCA], [https://pdbe.org/3mko PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3mko RCSB], [https://www.ebi.ac.uk/pdbsum/3mko PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3mko ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/GLYC_LYCVW GLYC_LYCVW] The stable signal peptide (SSP) is cleaved and functions as a signal peptide. In addition, it is apparently retained as the third component of the GP complex. The SSP is required for efficient glycoprotein expression, post-translational maturation cleavage of GP1 and GP2, glycoprotein transport to the cell surface plasma membrane, formation of infectious virus particles, and acid pH-dependent glycoprotein-mediated cell fusion (By similarity). Glycoprotein G1 mediates virus attachment to host receptor alpha-dystroglycan DAG1. This attachment induces virion internalization predominantly through clathrin- and caveolin-independent endocytosis (By similarity). Glycoprotein G2 is a viral fusion protein. Membrane fusion is mediated by conformational changes induced upon acidification in the endosome (Potential).
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Arenaviruses are important agents of zoonotic disease worldwide. The virions expose a tripartite envelope glycoprotein complex at their surface, formed by the glycoprotein subunits GP1, GP2 and the stable signal peptide. This complex is responsible for binding to target cells and for the subsequent fusion of viral and host-cell membranes for entry. During this process, the acidic environment of the endosome triggers a fusogenic conformational change in the transmembrane GP2 subunit of the complex. We report here the crystal structure of the recombinant GP2 ectodomain of the lymphocytic choriomeningitis virus, the arenavirus type species, at 1.8-A resolution. The structure shows the characteristic trimeric coiled coil present in class I viral fusion proteins, with a central stutter that allows a close structural alignment with most of the available structures of class I and III viral fusion proteins. The structure further shows a number of intrachain salt bridges stabilizing the postfusion hairpin conformation, one of which involves an aspartic acid that appears released from a critical interaction with the stable signal peptide upon low pH activation.
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X-ray structure of the arenavirus glycoprotein GP2 in its postfusion hairpin conformation.,Igonet S, Vaney MC, Vonhrein C, Bricogne G, Stura EA, Hengartner H, Eschli B, Rey FA Proc Natl Acad Sci U S A. 2011 Nov 28. PMID:22123988<ref>PMID:22123988</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3mko" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Lcmv]]
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[[Category: Large Structures]]
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[[Category: Igonet, S]]
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[[Category: Lymphocytic choriomeningitis mammarenavirus]]
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[[Category: Rey, F A]]
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[[Category: Igonet S]]
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[[Category: Vaney, M C]]
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[[Category: Rey FA]]
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[[Category: Trimeric coiled-coil]]
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[[Category: Vaney MC]]
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[[Category: Viral protein]]
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Current revision

Crystal Structure of the Lymphocytic Choriomeningitis Virus Membrane Fusion Glycoprotein GP2 in its Postfusion Conformation

PDB ID 3mko

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