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| | ==Crystal structure of the Ig V-set domain of human paired immunoglobulin-like type 2 receptor alpha== | | ==Crystal structure of the Ig V-set domain of human paired immunoglobulin-like type 2 receptor alpha== |
| - | <StructureSection load='3wuz' size='340' side='right' caption='[[3wuz]], [[Resolution|resolution]] 1.30Å' scene=''> | + | <StructureSection load='3wuz' size='340' side='right'caption='[[3wuz]], [[Resolution|resolution]] 1.30Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3wuz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3WUZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3WUZ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3wuz]] is a 1 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=3WUZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3WUZ FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene></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]] 1.3Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3wv0|3wv0]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PILRA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3wuz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wuz OCA], [https://pdbe.org/3wuz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3wuz RCSB], [https://www.ebi.ac.uk/pdbsum/3wuz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3wuz ProSAT]</span></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=3wuz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wuz OCA], [http://pdbe.org/3wuz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3wuz RCSB], [http://www.ebi.ac.uk/pdbsum/3wuz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3wuz ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| - | <div style="background-color:#fffaf0;">
| + | == Function == |
| - | == Publication Abstract from PubMed == | + | [https://www.uniprot.org/uniprot/PILRA_HUMAN PILRA_HUMAN] Paired receptors consist of highly related activating and inhibitory receptors and are widely involved in the regulation of the immune system. PILRA is thought to act as a cellular signaling inhibitory receptor by recruiting cytoplasmic phosphatases like PTPN6/SHP-1 and PTPN11/SHP-2 via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules. Receptor for PIANP.<ref>PMID:10903717</ref> <ref>PMID:18358807</ref> <ref>PMID:21241660</ref> |
| - | Paired Ig-like type 2 receptor alpha (PILRalpha) recognizes a wide range of O-glycosylated mucin and related proteins to regulate broad immune responses. However, the molecular characteristics of these recognitions are largely unknown. Here we show that sialylated O-linked sugar T antigen (sTn) and its attached peptide region are both required for ligand recognition by PILRalpha. Furthermore, we determined the crystal structures of PILRalpha and its complex with an sTn and its attached peptide region. The structures show that PILRalpha exhibits large conformational change to recognize simultaneously both the sTn O-glycan and the compact peptide structure constrained by proline residues. Binding and functional assays support this binding mode. These findings provide significant insight into the binding motif and molecular mechanism (which is distinct from sugar-recognition receptors) by which O-glycosylated mucin proteins with sTn modifications are recognized in the immune system as well as during viral entry. | + | |
| - | | + | |
| - | Structural basis for simultaneous recognition of an O-glycan and its attached peptide of mucin family by immune receptor PILRalpha.,Kuroki K, Wang J, Ose T, Yamaguchi M, Tabata S, Maita N, Nakamura S, Kajikawa M, Kogure A, Satoh T, Arase H, Maenaka K Proc Natl Acad Sci U S A. 2014 Jun 17;111(24):8877-82. doi:, 10.1073/pnas.1324105111. Epub 2014 Jun 2. PMID:24889612<ref>PMID:24889612</ref>
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| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div> | + | |
| - | <div class="pdbe-citations 3wuz" style="background-color:#fffaf0;"></div> | + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Arase, H]] | + | [[Category: Large Structures]] |
| - | [[Category: Kajikawa, M]] | + | [[Category: Arase H]] |
| - | [[Category: Kogure, A]] | + | [[Category: Kajikawa M]] |
| - | [[Category: Kuroki, K]] | + | [[Category: Kogure A]] |
| - | [[Category: Maenaka, K]] | + | [[Category: Kuroki K]] |
| - | [[Category: Maita, N]] | + | [[Category: Maenaka K]] |
| - | [[Category: Nakamura, S]] | + | [[Category: Maita N]] |
| - | [[Category: Ose, T]] | + | [[Category: Nakamura S]] |
| - | [[Category: Satoh, T]] | + | [[Category: Ose T]] |
| - | [[Category: Tabata, S]] | + | [[Category: Satoh T]] |
| - | [[Category: Wang, J]] | + | [[Category: Tabata S]] |
| - | [[Category: Yamaguchi, M]] | + | [[Category: Wang J]] |
| - | [[Category: Immunoglobulin-like]]
| + | [[Category: Yamaguchi M]] |
| - | [[Category: Immunological receptor]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Membrane protein]]
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| Structural highlights
Function
PILRA_HUMAN Paired receptors consist of highly related activating and inhibitory receptors and are widely involved in the regulation of the immune system. PILRA is thought to act as a cellular signaling inhibitory receptor by recruiting cytoplasmic phosphatases like PTPN6/SHP-1 and PTPN11/SHP-2 via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules. Receptor for PIANP.[1] [2] [3]
References
- ↑ Fournier N, Chalus L, Durand I, Garcia E, Pin JJ, Churakova T, Patel S, Zlot C, Gorman D, Zurawski S, Abrams J, Bates EE, Garrone P. FDF03, a novel inhibitory receptor of the immunoglobulin superfamily, is expressed by human dendritic and myeloid cells. J Immunol. 2000 Aug 1;165(3):1197-209. PMID:10903717
- ↑ Satoh T, Arii J, Suenaga T, Wang J, Kogure A, Uehori J, Arase N, Shiratori I, Tanaka S, Kawaguchi Y, Spear PG, Lanier LL, Arase H. PILRalpha is a herpes simplex virus-1 entry coreceptor that associates with glycoprotein B. Cell. 2008 Mar 21;132(6):935-44. PMID:18358807 doi:http://dx.doi.org/S0092-8674(08)00205-5
- ↑ Kogure A, Shiratori I, Wang J, Lanier LL, Arase H. PANP is a novel O-glycosylated PILRalpha ligand expressed in neural tissues. Biochem Biophys Res Commun. 2011 Feb 18;405(3):428-33. doi:, 10.1016/j.bbrc.2011.01.047. Epub 2011 Jan 15. PMID:21241660 doi:http://dx.doi.org/10.1016/j.bbrc.2011.01.047
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