2hjl: Difference between revisions

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-{{STRUCTURE_2hjl|  PDB=2hjl  |  SCENE=  }}
-===Crystal Structure of HLA-B5703 and HIV-1 peptide===
-{{ABSTRACT_PUBMED_16951352}}
-==Disease==
+==Crystal Structure of HLA-B5703 and HIV-1 peptide==
-[[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>
+<StructureSection load='2hjl' size='340' side='right'caption='[[2hjl]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2hjl]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HJL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HJL FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5&#8491;</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=2hjl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hjl OCA], [https://pdbe.org/2hjl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hjl RCSB], [https://www.ebi.ac.uk/pdbsum/2hjl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hjl ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/Q1KW74_9HIV1 Q1KW74_9HIV1]
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hj/2hjl_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</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=2hjl ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+HLA-B*57 is associated with slower disease progression to AIDS, and CD8+ T cell responses to B*57-restricted epitopes are thought to contribute to this protective effect. In this study, we evaluate the B*57-restricted p24 KAFSPEVIPMF (KF11) immune response which is immunodominant during chronic infection. Previously, we observed that the KF11 clade variants KGFNPEVIPMF [A2G,S4N] and KAFNPEIIMPF [S4N,V7I], sharing a position 4 mutation, are differentially recognized by KF11-specific T cells. By combining structural and cellular studies, we now demonstrate that the KF11 and [A2G,S4N] epitopes induce distinct functional responses in [A2G,S4N] and KF11-specific T cells, respectively, despite minimal structural differences between the individual B*57-peptide complexes. Recently, we also elucidated the highly distinct structure of KF11 in complex with B*5703, and have now characterized the CD8+ T cell repertoire recognizing this epitope. We now report striking features of TCR conservation both in terms of TCR Valpha and Vbeta chain usage, and throughout the hypervariable region. Collectively, our findings highlight unusual features of the B*5701/B*5703-KF11-specific immune responses which could influence disease progression and that might be important to consider when designing future vaccine regimens.
-==Function==
+Strong TCR conservation and altered T cell cross-reactivity characterize a B*57-restricted immune response in HIV-1 infection.,Gillespie GM, Stewart-Jones G, Rengasamy J, Beattie T, Bwayo JJ, Plummer FA, Kaul R, McMichael AJ, Easterbrook P, Dong T, Jones EY, Rowland-Jones SL J Immunol. 2006 Sep 15;177(6):3893-902. PMID:16951352<ref>PMID:16951352</ref>
-[[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.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[2hjl]] 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=2HJL OCA].
+</div>
+<div class="pdbe-citations 2hjl" style="background-color:#fffaf0;"></div>
 ==See Also==
-*[[Beta-2 microglobulin|Beta-2 microglobulin]]
+*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
-*[[Major histocompatibility complex|Major histocompatibility complex]]
+*[[MHC 3D structures|MHC 3D structures]]
+*[[MHC I 3D structures|MHC I 3D structures]]
-==Reference==
+== References ==
-<ref group="xtra">PMID:016951352</ref><references group="xtra"/><references/>
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Beattie, T.]]
+[[Category: Human immunodeficiency virus 1]]
-[[Category: Bwayo, J J.]]
+[[Category: Large Structures]]
-[[Category: Gillespie, G M.A.]]
+[[Category: Beattie T]]
-[[Category: Plummer, F A.]]
+[[Category: Bwayo JJ]]
-[[Category: Rengasamy, J.]]
+[[Category: Gillespie GMA]]
-[[Category: Stewart-Jones, G.]]
+[[Category: Plummer FA]]
-[[Category: B57]]
+[[Category: Rengasamy J]]
-[[Category: Hiv]]
+[[Category: Stewart-Jones G]]
-[[Category: Hla]]
-[[Category: Immune system]]