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| | <StructureSection load='4z3u' size='340' side='right'caption='[[4z3u]], [[Resolution|resolution]] 2.71Å' scene=''> | | <StructureSection load='4z3u' size='340' side='right'caption='[[4z3u]], [[Resolution|resolution]] 2.71Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4z3u]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Alphaherpesvirus_pseudorabies_virus_prv Alphaherpesvirus pseudorabies virus prv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Z3U OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4Z3U FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4z3u]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Suid_alphaherpesvirus_1 Suid alphaherpesvirus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Z3U OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4Z3U FirstGlance]. <br> |
| - | </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=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><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=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</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=4z3u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4z3u OCA], [https://pdbe.org/4z3u PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4z3u RCSB], [https://www.ebi.ac.uk/pdbsum/4z3u PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4z3u ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">UL34 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10345 Alphaherpesvirus pseudorabies virus PRV]), UL31 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10345 Alphaherpesvirus pseudorabies virus PRV])</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=4z3u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4z3u OCA], [http://pdbe.org/4z3u PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4z3u RCSB], [http://www.ebi.ac.uk/pdbsum/4z3u PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4z3u ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/G3G8X8_9ALPH G3G8X8_9ALPH] Plays an essential role in virion nuclear egress, the first step of virion release from infected cell. Within the host nucleus, NEC1 interacts with the newly formed capsid through the vertexes and directs it to the inner nuclear membrane by associating with NEC2. Induces the budding of the capsid at the inner nuclear membrane as well as its envelopment into the perinuclear space. There, the NEC1/NEC2 complex promotes the fusion of the enveloped capsid with the outer nuclear membrane and the subsequent release of the viral capsid into the cytoplasm where it will reach the secondary budding sites in the host Golgi or trans-Golgi network.[HAMAP-Rule:MF_04024] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Alphaherpesvirus pseudorabies virus prv]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Bigalke, J M]] | + | [[Category: Suid alphaherpesvirus 1]] |
| - | [[Category: Heldwein, E E]] | + | [[Category: Bigalke JM]] |
| - | [[Category: Complex]] | + | [[Category: Heldwein EE]] |
| - | [[Category: Membrane binding]]
| + | |
| - | [[Category: Viral protein]]
| + | |
| Structural highlights
Function
G3G8X8_9ALPH Plays an essential role in virion nuclear egress, the first step of virion release from infected cell. Within the host nucleus, NEC1 interacts with the newly formed capsid through the vertexes and directs it to the inner nuclear membrane by associating with NEC2. Induces the budding of the capsid at the inner nuclear membrane as well as its envelopment into the perinuclear space. There, the NEC1/NEC2 complex promotes the fusion of the enveloped capsid with the outer nuclear membrane and the subsequent release of the viral capsid into the cytoplasm where it will reach the secondary budding sites in the host Golgi or trans-Golgi network.[HAMAP-Rule:MF_04024]
Publication Abstract from PubMed
During nuclear egress, herpesvirus capsids bud at the inner nuclear membrane forming perinuclear viral particles that subsequently fuse with the outer nuclear membrane, releasing capsids into the cytoplasm. This unusual budding process is mediated by the nuclear egress complex (NEC) composed of two conserved viral proteins, UL31 and UL34. Earlier, we discovered that the herpesvirus nuclear egress complex (NEC) could bud synthetic membranes in vitro without the help of other proteins by forming a coat-like hexagonal scaffold inside the budding membrane. To understand the structural basis of NEC-mediated membrane budding, we determined the crystal structures of the NEC from two herpesviruses. The hexagonal lattice observed in the NEC crystals recapitulates the honeycomb coats within the budded vesicles. Perturbation of the oligomeric interfaces through mutagenesis blocks budding in vitro confirming that NEC oligomerization into a honeycomb lattice drives budding. The structure represents the first atomic-level view of an oligomeric array formed by a membrane-deforming protein, making possible the dissection of its unique budding mechanism and the design of inhibitors to block it.
Structural basis of membrane budding by the nuclear egress complex of herpesviruses.,Bigalke JM, Heldwein EE EMBO J. 2015 Dec 2;34(23):2921-36. doi: 10.15252/embj.201592359. Epub 2015 Oct, 28. PMID:26511020[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Bigalke JM, Heldwein EE. Structural basis of membrane budding by the nuclear egress complex of herpesviruses. EMBO J. 2015 Dec 2;34(23):2921-36. doi: 10.15252/embj.201592359. Epub 2015 Oct, 28. PMID:26511020 doi:http://dx.doi.org/10.15252/embj.201592359
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