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5d9s

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'''Unreleased structure'''
 
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The entry 5d9s is ON HOLD until Paper Publication
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==Structure of HLA-A2:01 with the 11-mer peptide F11V==
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<StructureSection load='5d9s' size='340' side='right'caption='[[5d9s]], [[Resolution|resolution]] 1.87&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[5d9s]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Toxoplasma_gondii Toxoplasma gondii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5D9S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5D9S 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]] 1.87&#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=5d9s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5d9s OCA], [https://pdbe.org/5d9s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5d9s RCSB], [https://www.ebi.ac.uk/pdbsum/5d9s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5d9s ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/B2MG_HUMAN B2MG_HUMAN] Defects in B2M are the cause of hypercatabolic hypoproteinemia (HYCATHYP) [MIM:[https://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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== Function ==
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[https://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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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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HLA class I presentation of pathogen-derived peptide ligands is essential for CD8+ T-cell recognition of Toxoplasma gondii infected cells. Currently, little data exist pertaining to peptides that are presented after T. gondii infection. Herein we purify HLA-A*02:01 complexes from T. gondii infected cells and characterize the peptide ligands using LCMS. We identify 195 T. gondii encoded ligands originating from both secreted and cytoplasmic proteins. Surprisingly, T. gondii ligands are significantly longer than uninfected host ligands, and these longer pathogen-derived peptides maintain a canonical N-terminal binding core yet exhibit a C-terminal extension of 1-30 amino acids. Structural analysis demonstrates that binding of extended peptides opens the HLA class I F' pocket, allowing the C-terminal extension to protrude through one end of the binding groove. In summary, we demonstrate that unrealized structural flexibility makes MHC class I receptive to parasite-derived ligands that exhibit unique C-terminal peptide extensions.
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Authors: Remesh, S.G., Zajonc, D.M.
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Toxoplasma gondii peptide ligands open the gate of the HLA class I binding groove.,McMurtrey C, Trolle T, Sansom T, Remesh SG, Kaever T, Bardet W, Jackson K, McLeod R, Sette A, Nielsen M, Zajonc DM, Blader IJ, Peters B, Hildebrand W Elife. 2016 Jan 29;5. pii: e12556. doi: 10.7554/eLife.12556. PMID:26824387<ref>PMID:26824387</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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[[Category: Remesh, S.G]]
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<div class="pdbe-citations 5d9s" style="background-color:#fffaf0;"></div>
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[[Category: Zajonc, D.M]]
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==See Also==
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*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
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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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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Homo sapiens]]
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[[Category: Large Structures]]
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[[Category: Toxoplasma gondii]]
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[[Category: Remesh SG]]
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[[Category: Zajonc DM]]

Current revision

Structure of HLA-A2:01 with the 11-mer peptide F11V

PDB ID 5d9s

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