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==Integrated illustration of a valid epitope based on the SLA class I structure and tetramer technique could carry forward the development of molecular vaccine in swine species==
==Integrated illustration of a valid epitope based on the SLA class I structure and tetramer technique could carry forward the development of molecular vaccine in swine species==
<StructureSection load='5ylx' size='340' side='right' caption='[[5ylx]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='5ylx' size='340' side='right'caption='[[5ylx]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[5ylx]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Pig Pig]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5YLX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5YLX FirstGlance]. <br>
<table><tr><td colspan='2'>[[5ylx]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Porcine_reproductive_and_respiratory_syndrome_virus Porcine reproductive and respiratory syndrome virus] and [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5YLX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5YLX FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SLA-1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 PIG]), B2M ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 PIG])</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ylx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ylx OCA], [http://pdbe.org/5ylx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5ylx RCSB], [http://www.ebi.ac.uk/pdbsum/5ylx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5ylx ProSAT]</span></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=5ylx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ylx OCA], [https://pdbe.org/5ylx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ylx RCSB], [https://www.ebi.ac.uk/pdbsum/5ylx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ylx ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/B2MG_PIG B2MG_PIG]] Component of the class I major histocompatibility complex (MHC). Involved in the presentation of peptide antigens to the immune system (By similarity).  
[https://www.uniprot.org/uniprot/H6TIB1_PIG H6TIB1_PIG]  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
To investigate CTL epitope applications in swine, SLA-1(*)1502-restricted peptide epitopes matching porcine reproductive and respiratory syndrome virus (PRRSV) strains were explored by crystallography, biochemistry, and the specific pathogen-free (SPF) swine experiments. First, nine predicted PRRSV peptides were tested by assembly of the peptide-SLA-1(*)1502 (pSLA-1(*)1502) complexes, and the crystal structure of the SLA-1(*)1502 complex with one peptide (NSP9-TMP9) was determined. The NSP9-TMP9 peptide conformation presented by pSLA-1(*)1502 is different from that of the peptides presented by the known pSLA-1(*)0401 and pSLA-3(*)hs0202 complexes. Two consecutive Pro residues make the turn between P3 and P4 of NSP9-TMP9 much sharper. The D pocket of pSLA-1(*)1502 is unique and is important for peptide binding. Next, the potential SLA-1(*)1502-restricted peptide epitopes matching four typical genetic PRRSV strains were identified based on the peptide-binding motif of SLA-1(*)1502 determined by structural analysis and alanine scanning of the NSP9-TMP9 peptide. The tetrameric complex of SLA-1(*)1502 and NSP9-TMP9 was constructed and examined. Finally, taking NSP9-TMP9 as an example, the CTL immunogenicity of the identified PRRSV peptide epitope was evaluated. The SPF swine expressing the SLA-1(*)1502 alleles were divided into three groups: modified live vaccine (MLV), MLV+NSP9-TMP9, and the blank control group. NSP9-TMP9 was determined as a PRRSV CTL epitope with strong immunogenicity by flow cytometry and IFN-gamma expression. Our study developed an integrated approach to identify SLA-I-restricted CTL epitopes from various important viruses and is helpful in designing and applying effective peptide-based vaccines for swine.
 
Illumination of PRRSV Cytotoxic T Lymphocyte Epitopes by the Three-Dimensional Structure and Peptidome of Swine Lymphocyte Antigen Class I (SLA-I).,Pan X, Zhang N, Wei X, Jiang Y, Chen R, Li Q, Liang R, Zhang L, Ma L, Xia C Front Immunol. 2020 Jan 8;10:2995. doi: 10.3389/fimmu.2019.02995. eCollection, 2019. PMID:31969884<ref>PMID:31969884</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5ylx" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Pig]]
[[Category: Large Structures]]
[[Category: Pan, X C]]
[[Category: Porcine reproductive and respiratory syndrome virus]]
[[Category: Wei, X H]]
[[Category: Sus scrofa]]
[[Category: Xia, C]]
[[Category: Pan XC]]
[[Category: Zhang, N]]
[[Category: Wei XH]]
[[Category: Ctl response]]
[[Category: Xia C]]
[[Category: Immune system]]
[[Category: Zhang N]]
[[Category: Mhc]]
[[Category: Tetramer]]
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