2cik

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{{STRUCTURE_2cik| PDB=2cik | SCENE= }}
 
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===INSIGHTS INTO CROSSREACTIVITY IN HUMAN ALLORECOGNITION: THE STRUCTURE OF HLA-B35011 PRESENTING AN EPITOPE DERIVED FROM CYTOCHROME P450.===
 
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{{ABSTRACT_PUBMED_17109469}}
 
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==Disease==
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==Insights Into Crossreactivity in Human Allorecognition: The Structure of HLA-B35011 Presenting an Epitope derived from Cytochrome P450.==
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[[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[http://omim.org/entry/241600 241600]]. Affected individuals show marked reduction in serum concentrations of immunoglobulin and albumin, probably due to rapid degradation.<ref>PMID:16549777</ref> Note=Beta-2-microglobulin may adopt the fibrillar configuration of amyloid in certain pathologic states. The capacity to assemble into amyloid fibrils is concentration dependent. Persistently high beta(2)-microglobulin serum levels lead to amyloidosis in patients on long-term hemodialysis.<ref>PMID:3532124</ref><ref>PMID:1336137</ref><ref>PMID:7554280</ref><ref>PMID:4586824</ref><ref>PMID:8084451</ref><ref>PMID:12119416</ref><ref>PMID:12796775</ref><ref>PMID:16901902</ref><ref>PMID:16491088</ref><ref>PMID:17646174</ref><ref>PMID:18835253</ref><ref>PMID:18395224</ref><ref>PMID:19284997</ref>
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<StructureSection load='2cik' size='340' side='right'caption='[[2cik]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2cik]] 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=2CIK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2CIK 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]] 1.75&#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=GOL:GLYCEROL'>GOL</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=2cik FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cik OCA], [https://pdbe.org/2cik PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2cik RCSB], [https://www.ebi.ac.uk/pdbsum/2cik PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2cik ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/O19626_HUMAN O19626_HUMAN]
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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/ci/2cik_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=2cik 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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Virus-specific T cell populations have been implicated in allo-recognition. The subdominant T cell receptor JL12 recognizes both HLA-B*0801 presenting the Epstein-Barr virus-derived peptide FLRGRAYGL and also HLA-B*3501 presenting the cytochrome p450 self peptide KPIVVLHGY. This cross-reactivity could promote the rejection of HLA-B*3501-positive cells in Epstein-Barr virus-exposed HLA-B*0801 recipients. LC13, the dominant TCR against the HLA-B*0801:FLRGRAYGL complex, fails to recognize HLA-B*3501:KPIVVLHGY. We report the 1.75-Angstrom resolution crystal structure of the human allo-ligand HLA-B*3501:KPIVVLHGY. Similarities between this structure and that of HLA-B*0801:FLRGRAYGL may facilitate cross-recognition by JL12. Moreover, the elevated peptide position in HLA-B*3501:KPIVVLHGY would provide steric hindrance to LC13, preventing it from interacting in the manner in which it interacts with HLA-B*0801:FLRGRAYGL. These findings are relevant to understanding the basis of T cell cross-reactivity in allo-recognition, optimal transplant donor-recipient matching and developing specific molecular inhibitors of allo-recognition.
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==Function==
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The structure of the human allo-ligand HLA-B*3501 in complex with a cytochrome p450 peptide: steric hindrance influences TCR allo-recognition.,Hourigan CS, Harkiolaki M, Peterson NA, Bell JI, Jones EY, O'Callaghan CA Eur J Immunol. 2006 Dec;36(12):3288-93. PMID:17109469<ref>PMID:17109469</ref>
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[[http://www.uniprot.org/uniprot/1B35_HUMAN 1B35_HUMAN]] Involved in the presentation of foreign antigens to the immune system. [[http://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN]] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system.
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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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[[2cik]] is a 3 chain structure with sequence 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=2CIK OCA].
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</div>
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<div class="pdbe-citations 2cik" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
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*[[Beta-2 microglobulin|Beta-2 microglobulin]]
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*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
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*[[Major histocompatibility complex|Major histocompatibility complex]]
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*[[MHC 3D structures|MHC 3D structures]]
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*[[MHC I 3D structures|MHC I 3D structures]]
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==Reference==
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== References ==
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<ref group="xtra">PMID:017109469</ref><references group="xtra"/><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: Bell, J I.]]
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[[Category: Large Structures]]
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[[Category: Callaghan, C A.O.]]
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[[Category: Bell JI]]
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[[Category: Harkiolaki, M.]]
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[[Category: Harkiolaki M]]
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[[Category: Hourigan, C S.]]
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[[Category: Hourigan CS]]
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[[Category: Jones, E Y.]]
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[[Category: Jones EY]]
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[[Category: Peterson, N A.]]
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[[Category: O'Callaghan CA]]
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[[Category: Allo-ligand]]
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[[Category: Peterson NA]]
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[[Category: Antigen-peptide complex]]
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[[Category: Ebv]]
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[[Category: Glycoprotein]]
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[[Category: Hla]]
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[[Category: Hla-b3501]]
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[[Category: Human]]
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[[Category: Immune response]]
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[[Category: Immune system-peptide complex]]
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[[Category: Immune system/peptide]]
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[[Category: Immunoglobulin domain]]
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[[Category: Major histocompatibility antigen]]
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[[Category: Membrane]]
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[[Category: Mhc]]
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[[Category: Mhc i]]
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[[Category: Pyrrolidone carboxylic acid]]
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[[Category: Transmembrane]]
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Current revision

Insights Into Crossreactivity in Human Allorecognition: The Structure of HLA-B35011 Presenting an Epitope derived from Cytochrome P450.

PDB ID 2cik

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