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2o5n

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(New page: 200px<br /><applet load="2o5n" size="350" color="white" frame="true" align="right" spinBox="true" caption="2o5n, resolution 2.400&Aring;" /> '''Crystal structure o...)
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[[Image:2o5n.jpg|left|200px]]<br /><applet load="2o5n" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2o5n, resolution 2.400&Aring;" />
 
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'''Crystal structure of a Viral Glycoprotein'''<br />
 
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==Overview==
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==Crystal structure of a Viral Glycoprotein==
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Mouse cytomegalovirus (MCMV), a ss-herpesvirus that establishes latent and, persistent infections in mice, is a valuable model for studying complex, virus-host interactions. MCMV encodes the m145 family of putative, immunoevasins with predicted MHC-I structure. Functions attributed to some, family members include downregulation of host MHC-I (m152) and NKG2D, ligands (m145, m152, m155) and interaction with inhibitory or activating, NK receptors (m157). We present the cellular, biochemical and structural, characterization of m153, which is a heavily glycosylated homodimer, that, does not require ss2m or peptide, and is expressed at the surface of, MCMV-infected cells. Its 2.4 A crystal structure confirms that this, compact molecule preserves an MHC-I-like fold and reveals a novel mode of, dimerization, confirmed by site-directed mutagenesis, and a distinctive, disulfide-stabilized extended amino terminus. The structure provides a, useful framework for comparative analysis of the divergent members of the, m145 family.
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<StructureSection load='2o5n' size='340' side='right'caption='[[2o5n]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2o5n]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Murid_betaherpesvirus_1 Murid betaherpesvirus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2O5N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2O5N 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">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</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=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></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=2o5n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2o5n OCA], [https://pdbe.org/2o5n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2o5n RCSB], [https://www.ebi.ac.uk/pdbsum/2o5n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2o5n ProSAT]</span></td></tr>
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</table>
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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/o5/2o5n_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=2o5n ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Mouse cytomegalovirus (MCMV), a beta-herpesvirus that establishes latent and persistent infections in mice, is a valuable model for studying complex virus-host interactions. MCMV encodes the m145 family of putative immunoevasins with predicted major histocompatibility complex, class I (MHC-I) structure. Functions attributed to some family members include down-regulation of host MHC-I (m152) and NKG2D ligands (m145, m152, and m155) and interaction with inhibitory or activating NK receptors (m157). We present the cellular, biochemical, and structural characterization of m153, which is a heavily glycosylated homodimer, that does not require beta2m or peptide and is expressed at the surface of MCMV-infected cells. Its 2.4-A crystal structure confirms that this compact molecule preserves an MHC-I-like fold and reveals a novel mode of dimerization, confirmed by site-directed mutagenesis, and a distinctive disulfide-stabilized extended N terminus. The structure provides a useful framework for comparative analysis of the divergent members of the m145 family.
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==About this Structure==
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Cellular expression and crystal structure of the murine cytomegalovirus major histocompatibility complex class I-like glycoprotein, m153.,Mans J, Natarajan K, Balbo A, Schuck P, Eikel D, Hess S, Robinson H, Simic H, Jonjic S, Tiemessen CT, Margulies DH J Biol Chem. 2007 Nov 30;282(48):35247-58. Epub 2007 Sep 26. PMID:17897947<ref>PMID:17897947</ref>
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2O5N is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Murid_herpesvirus_1 Murid herpesvirus 1] with <scene name='pdbligand=NDG:'>NDG</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2O5N OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Cellular expression and crystal structure of the murine cytomegalovirus MHC-Iv glycoprotein, m153., Mans J, Natarajan K, Balbo A, Schuck P, Eikel D, Hess S, Robinson H, Simic H, Jonjic S, Tiemessen CT, Margulies DH, J Biol Chem. 2007 Sep 26;. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17897947 17897947]
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</div>
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[[Category: Murid herpesvirus 1]]
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<div class="pdbe-citations 2o5n" style="background-color:#fffaf0;"></div>
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[[Category: Protein complex]]
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== References ==
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[[Category: Mans, J.]]
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<references/>
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[[Category: Margulies, D.H.]]
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__TOC__
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[[Category: Natarajan, K.]]
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</StructureSection>
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[[Category: Robinson, H.]]
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[[Category: Large Structures]]
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[[Category: NDG]]
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[[Category: Murid betaherpesvirus 1]]
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[[Category: alpha-beta protein]]
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[[Category: Mans J]]
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[[Category: ig-superfamily]]
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[[Category: Margulies DH]]
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[[Category: m145 family]]
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[[Category: Natarajan K]]
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[[Category: m153]]
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[[Category: Robinson H]]
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[[Category: mhc-i-like]]
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[[Category: mhc-iv]]
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[[Category: mouse cytomegalovirus]]
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[[Category: viral protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jan 23 11:22:55 2008''
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Current revision

Crystal structure of a Viral Glycoprotein

PDB ID 2o5n

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