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2cse

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(New page: 200px<br /><applet load="2cse" size="450" color="white" frame="true" align="right" spinBox="true" caption="2cse" /> '''Features of Reovirus Outer-Capsid Protein mu...)
Current revision (09:18, 14 February 2024) (edit) (undo)
 
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[[Image:2cse.gif|left|200px]]<br /><applet load="2cse" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="2cse" />
 
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'''Features of Reovirus Outer-Capsid Protein mu1 Revealed by Electron and Image Reconstruction of the virion at 7.0-A Resolution'''<br />
 
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==Overview==
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==Features of Reovirus Outer-Capsid Protein mu1 Revealed by Electron and Image Reconstruction of the virion at 7.0-A Resolution==
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Reovirus is a useful model for addressing the molecular basis of membrane, penetration by one of the larger nonenveloped animal viruses. We now, report the structure of the reovirus virion at approximately 7.0 A, resolution as obtained by electron cryomicroscopy and three-dimensional, image reconstruction. Several features of the myristoylated outer capsid, protein mu1, not seen in a previous X-ray crystal structure of the, mu1-sigma3 heterohexamer, are evident in the virion. These features appear, to be important for stabilizing the outer capsid, regulating the, conformational changes in mu1 that accompany perforation of target, membranes, and contributing directly to membrane penetration during cell, entry.
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<SX load='2cse' size='340' side='right' viewer='molstar' caption='[[2cse]], [[Resolution|resolution]] 7.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2cse]] is a 27 chain structure with sequence from [https://en.wikipedia.org/wiki/Mammalian_orthoreovirus_1_Lang Mammalian orthoreovirus 1 Lang] and [https://en.wikipedia.org/wiki/Mammalian_orthoreovirus_3_Dearing Mammalian orthoreovirus 3 Dearing]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CSE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CSE FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 7&#8491;</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=2cse FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cse OCA], [https://pdbe.org/2cse PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2cse RCSB], [https://www.ebi.ac.uk/pdbsum/2cse PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2cse ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/MU1_REOVL MU1_REOVL] Major outer capsid protein involved in host cell membrane penetration. In the endocytic compartment, outer-capsid protein sigma-3 is removed by cathepsin proteases, which exposes the viral membrane-penetration protein mu-1. Both myristoylated peptides mu-1N and phi are released during infectious subvirion particles (ISVP) formation in the endosome. They associate with host membranes and mu-1N induces permeabilization and delivery of transcriptionally active viral particles into the host cell cytoplasm. Seems to induce apoptosis in the host cell.<ref>PMID:11007773</ref> <ref>PMID:15280481</ref> <ref>PMID:16912293</ref> <ref>PMID:17005655</ref> <ref>PMID:18369316</ref> The viral outer shell polypeptides, of which mu-1 is one, impose structural constraints that prevent elongation of nascent transcripts by the RNA-dependent RNA polymerase lambda-3.<ref>PMID:11007773</ref> <ref>PMID:15280481</ref> <ref>PMID:16912293</ref> <ref>PMID:17005655</ref> <ref>PMID:18369316</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cs/2cse_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=2cse ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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2CSE is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Mammalian_orthoreovirus_2 Mammalian orthoreovirus 2] and [http://en.wikipedia.org/wiki/Mammalian_orthoreovirus_3 Mammalian orthoreovirus 3]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2CSE OCA].
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*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
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== References ==
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==Reference==
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<references/>
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Features of reovirus outer capsid protein mu1 revealed by electron cryomicroscopy and image reconstruction of the virion at 7.0 Angstrom resolution., Zhang X, Ji Y, Zhang L, Harrison SC, Marinescu DC, Nibert ML, Baker TS, Structure. 2005 Oct;13(10):1545-57. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16216585 16216585]
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__TOC__
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[[Category: Mammalian orthoreovirus 2]]
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</SX>
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[[Category: Mammalian orthoreovirus 3]]
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[[Category: Large Structures]]
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[[Category: Protein complex]]
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[[Category: Mammalian orthoreovirus 1 Lang]]
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[[Category: Baker, T.S.]]
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[[Category: Mammalian orthoreovirus 3 Dearing]]
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[[Category: Harrison, S.C.]]
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[[Category: Baker TS]]
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[[Category: Ji, Y.]]
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[[Category: Harrison SC]]
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[[Category: Marinescu, D.C.]]
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[[Category: Ji Y]]
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[[Category: Nibert, M.L.]]
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[[Category: Marinescu DC]]
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[[Category: Zhang, L.]]
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[[Category: Nibert ML]]
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[[Category: Zhang, X.]]
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[[Category: Zhang L]]
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[[Category: cryoem]]
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[[Category: Zhang X]]
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[[Category: icosahedral virus]]
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[[Category: image processing]]
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[[Category: membrane penetration protein]]
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[[Category: reovirus]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 09:14:30 2007''
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Current revision

Features of Reovirus Outer-Capsid Protein mu1 Revealed by Electron and Image Reconstruction of the virion at 7.0-A Resolution

2cse, resolution 7.00Å

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