View source for 7duu


==Crystal structure of HLA molecule with an KIR receptor==
<StructureSection load='7duu' size='340' side='right'caption='[[7duu]], [[Resolution|resolution]] 2.51&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7duu]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Hepacivirus_hominis Hepacivirus hominis] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7DUU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7DUU 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]] 2.51&#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=7duu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7duu OCA], [https://pdbe.org/7duu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7duu RCSB], [https://www.ebi.ac.uk/pdbsum/7duu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7duu ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Killer cell immunoglobulin-like receptors (KIRs) are important receptors for regulating the killing of virus-infected or cancer cells of natural killer (NK) cells. KIR2DS2 can recognize peptides derived from hepatitis C virus (HCV) or global flaviviruses (such as dengue and Zika) presented by HLA-C*0102 to activate NK cells, and has shown promising results when used for cancer immunotherapy. Here, we present the complex structure of KIR2DS2 with HLA-C*0102 at a resolution of 2.5A. Our structure reveals that KIR2DS2 can bind with HLA-C*0102 and HLA-A*1101 in two different directions. Moreover, Tyr45 (in activating receptor KIR2DS2) and Phe45 (in inhibitory KIRs) distinguish the two different binding models and binding affinity between activating KIRs and inhibitory KIRs. The conserved 'AT' motif of the peptide mediates recognition and determines the peptide specificity of recognition. These structural characteristics shed light on how KIRs activate NK cells and can provide a molecular basis for immunotherapy by NK cells.

Activating receptor KIR2DS2 bound to HLA-C1 reveals the novel recognition features of activating receptor.,Yang Y, Bai H, Wu Y, Chen P, Zhou J, Lei J, Ye X, Brown AJ, Zhou X, Shu T, Chen Y, Wei P, Yin L Immunology. 2022 Mar;165(3):341-354. doi: 10.1111/imm.13439. Epub 2022 Jan 11. PMID:34967442<ref>PMID:34967442</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7duu" style="background-color:#fffaf0;"></div>

==See Also==
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
*[[MHC 3D structures|MHC 3D structures]]
*[[MHC I 3D structures|MHC I 3D structures]]
*[[NK cell receptor|NK cell receptor]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Hepacivirus hominis]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Yang Y]]
[[Category: Yin L]]