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==Crystal structure of D3D4 domain of the LILRB1 molecule==
==Crystal structure of D3D4 domain of the LILRB1 molecule==
<StructureSection load='4ll9' size='340' side='right' caption='[[4ll9]], [[Resolution|resolution]] 2.69&Aring;' scene=''>
<StructureSection load='4ll9' size='340' side='right'caption='[[4ll9]], [[Resolution|resolution]] 2.69&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4ll9]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LL9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4LL9 FirstGlance]. <br>
<table><tr><td colspan='2'>[[4ll9]] 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=4LL9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LL9 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</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]] 2.686&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4lla|4lla]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LILRB1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=4ll9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ll9 OCA], [https://pdbe.org/4ll9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ll9 RCSB], [https://www.ebi.ac.uk/pdbsum/4ll9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ll9 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=4ll9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ll9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4ll9 RCSB], [http://www.ebi.ac.uk/pdbsum/4ll9 PDBsum]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/LIRB1_HUMAN LIRB1_HUMAN]] Receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C and HLA-G alleles. Receptor for H301/UL18, a human cytomegalovirus class I MHC homolog. Ligand binding results in inhibitory signals and down-regulation of the immune response. Engagement of LILRB1 present on natural killer cells or T-cells by class I MHC molecules protects the target cells from lysis. Interaction with HLA-B or HLA-E leads to inhibition of the signal triggered by FCER1A and inhibits serotonin release. Inhibits FCGR1A-mediated phosphorylation of cellular proteins and mobilization of intracellular calcium ions.<ref>PMID:9285411</ref> <ref>PMID:9842885</ref> <ref>PMID:11907092</ref>
[https://www.uniprot.org/uniprot/LIRB1_HUMAN LIRB1_HUMAN] Receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C and HLA-G alleles. Receptor for H301/UL18, a human cytomegalovirus class I MHC homolog. Ligand binding results in inhibitory signals and down-regulation of the immune response. Engagement of LILRB1 present on natural killer cells or T-cells by class I MHC molecules protects the target cells from lysis. Interaction with HLA-B or HLA-E leads to inhibition of the signal triggered by FCER1A and inhibits serotonin release. Inhibits FCGR1A-mediated phosphorylation of cellular proteins and mobilization of intracellular calcium ions.<ref>PMID:9285411</ref> <ref>PMID:9842885</ref> <ref>PMID:11907092</ref>  
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 4ll9" style="background-color:#fffaf0;"></div>
==See Also==
*[[Leukocyte immunoglobulin-like receptor|Leukocyte immunoglobulin-like receptor]]
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Gao, G F]]
[[Category: Large Structures]]
[[Category: Liu, J]]
[[Category: Gao GF]]
[[Category: Nam, G]]
[[Category: Liu J]]
[[Category: Qi, J]]
[[Category: Nam G]]
[[Category: Ryu, M]]
[[Category: Qi J]]
[[Category: Shi, Y]]
[[Category: Ryu M]]
[[Category: Song, H]]
[[Category: Shi Y]]
[[Category: Wang, Q]]
[[Category: Song H]]
[[Category: Yan, J]]
[[Category: Wang Q]]
[[Category: Ig-like domain]]
[[Category: Yan J]]
[[Category: Immune system]]
[[Category: Immune-modulatory molecule]]