View source for 3mrr


==Crystal Structure of MHC class I HLA-A2 molecule complexed with Human Prostaglandin Transporter decapeptide==
<StructureSection load='3mrr' size='340' side='right'caption='[[3mrr]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3mrr]] 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=3MRR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3MRR 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]] 1.6&#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=3mrr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mrr OCA], [https://pdbe.org/3mrr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3mrr RCSB], [https://www.ebi.ac.uk/pdbsum/3mrr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3mrr ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/SO2A1_HUMAN SO2A1_HUMAN] Defects in SLCO2A1 are the cause of hypertrophic osteoarthropathy, primary, autosomal recessive, type 2 (PHOAR2) [MIM:[https://omim.org/entry/614441 614441]. PHOAR2 is a disease characterized by digital clubbing, periostosis, acroosteolysis, painful joint enlargement, and variable features of pachydermia that include thickened facial skin and a thickened scalp. Other developmental anomalies include delayed closure of the cranial sutures and congenital heart disease.<ref>PMID:22331663</ref> <ref>PMID:22197487</ref> <ref>PMID:22553128</ref> <ref>PMID:22696055</ref> 
== Function ==
[https://www.uniprot.org/uniprot/SO2A1_HUMAN SO2A1_HUMAN] May mediate the release of newly synthesized prostaglandins from cells, the transepithelial transport of prostaglandins, and the clearance of prostaglandins from the circulation. Transports PGD2, as well as PGE1, PGE2 and PGF2A.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The structural rules governing peptide/MHC (pMHC) recognition by T cells remain unclear. To address this question, we performed a structural characterization of several HLA-A2/peptide complexes and assessed in parallel their antigenicity, by analyzing the frequency of the corresponding Ag-specific naive T cells in A2(+) and A2(-) individuals, as well as within CD4(+) and CD8(+) subsets. We were able to find a correlation between specific naive T cell frequency and peptide solvent accessibility and/or mobility for a subset of moderately prominent peptides. However, one single structural parameter of the pMHC complexes could not be identified to explain each peptide antigenicity. Enhanced pMHC antigenicity was associated with both highly biased TRAV usage, possibly reflecting favored interaction between particular pMHC complexes and germline TRAV loops, and peptide structural features allowing interactions with a broad range of permissive CDR3 loops. In this context of constrained TCR docking mode, an optimal peptide solvent exposed surface leading to an optimal complementarity with TCR interface may constitute one of the key features leading to high frequency of specific T cells. Altogether our results suggest that frequency of specific T cells depends on the fine-tuning of several parameters, the structural determinants governing TCR-pMHC interaction being just one of them.

Analysis of relationships between peptide/MHC structural features and naive T cell frequency in humans.,Reiser JB, Legoux F, Gras S, Trudel E, Chouquet A, Leger A, Le Gorrec M, Machillot P, Bonneville M, Saulquin X, Housset D J Immunol. 2014 Dec 15;193(12):5816-26. doi: 10.4049/jimmunol.1303084. Epub 2014 , Nov 12. PMID:25392532<ref>PMID:25392532</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3mrr" style="background-color:#fffaf0;"></div>

==See Also==
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Bonneville M]]
[[Category: Chouquet A]]
[[Category: Debeaupuis E]]
[[Category: Echasserieau K]]
[[Category: Housset D]]
[[Category: Legoux F]]
[[Category: Machillot P]]
[[Category: Reiser J-B]]
[[Category: Saulquin X]]