1kcg

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[[Image:1kcg.gif|left|200px]]
 
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==NKG2D in complex with ULBP3==
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The line below this paragraph, containing "STRUCTURE_1kcg", creates the "Structure Box" on the page.
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<StructureSection load='1kcg' size='340' side='right'caption='[[1kcg]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1kcg]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KCG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KCG FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 2.6&#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=CGL:CYSTINE-GLUTATHIONE'>CGL</scene></td></tr>
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{{STRUCTURE_1kcg| PDB=1kcg | SCENE= }}
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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=1kcg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kcg OCA], [https://pdbe.org/1kcg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kcg RCSB], [https://www.ebi.ac.uk/pdbsum/1kcg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kcg ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/NKG2D_HUMAN NKG2D_HUMAN] Receptor for MICA, MICB, ULBP1, ULBP2, ULBP3 (ULBP2>ULBP1>ULBP3) and ULBP4. Plays a role as a receptor for the recognition of MHC class I HLA-E molecules by NK cells and some cytotoxic T-cells. Involved in the immune surveillance exerted by T- and B-lymphocytes.
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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/kc/1kcg_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1kcg 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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NKG2D is known to trigger the natural killer (NK) cell lysis of various tumor and virally infected cells. In the NKG2D/ULBP3 complex, the structure of ULBP3 resembles the alpha1 and alpha2 domains of classical MHC molecules without a bound peptide. The lack of alpha3 and beta2m domains is compensated by replacing two hydrophobic patches at the underside of the class I MHC-like beta sheet floor with a group of hydrophilic and charged residues in ULBP3. NKG2D binds diagonally across the ULBP3 alpha helices, creating a complementary interface, an asymmetrical subunit orientation, and local conformational adjustments in the receptor. The interface is stabilized primarily by hydrogen bonds and hydrophobic interactions. Unlike the KIR receptors that recognize a conserved HLA region by a lock-and-key mechanism, NKG2D recognizes diverse ligands by an induced-fit mechanism.
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'''NKG2D in complex with ULBP3'''
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Conformational plasticity revealed by the cocrystal structure of NKG2D and its class I MHC-like ligand ULBP3.,Radaev S, Rostro B, Brooks AG, Colonna M, Sun PD Immunity. 2001 Dec;15(6):1039-49. PMID:11754823<ref>PMID:11754823</ref>
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==Overview==
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NKG2D is known to trigger the natural killer (NK) cell lysis of various tumor and virally infected cells. In the NKG2D/ULBP3 complex, the structure of ULBP3 resembles the alpha1 and alpha2 domains of classical MHC molecules without a bound peptide. The lack of alpha3 and beta2m domains is compensated by replacing two hydrophobic patches at the underside of the class I MHC-like beta sheet floor with a group of hydrophilic and charged residues in ULBP3. NKG2D binds diagonally across the ULBP3 alpha helices, creating a complementary interface, an asymmetrical subunit orientation, and local conformational adjustments in the receptor. The interface is stabilized primarily by hydrogen bonds and hydrophobic interactions. Unlike the KIR receptors that recognize a conserved HLA region by a lock-and-key mechanism, NKG2D recognizes diverse ligands by an induced-fit mechanism.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1KCG is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KCG OCA].
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</div>
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<div class="pdbe-citations 1kcg" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Conformational plasticity revealed by the cocrystal structure of NKG2D and its class I MHC-like ligand ULBP3., Radaev S, Rostro B, Brooks AG, Colonna M, Sun PD, Immunity. 2001 Dec;15(6):1039-49. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11754823 11754823]
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*[[NK cell receptor|NK cell receptor]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Radaev, S.]]
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[[Category: Radaev S]]
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[[Category: Sun, P.]]
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[[Category: Sun P]]
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[[Category: C-type lectin-like receptor]]
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[[Category: Mhc class i-like molecule]]
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[[Category: Protein-protein complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:34:23 2008''
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Current revision

NKG2D in complex with ULBP3

PDB ID 1kcg

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