View source for 3w3n


==Crystal structure of human TLR8 in complex with Resiquimod (R848) crystal form 3==
<StructureSection load='3w3n' size='340' side='right'caption='[[3w3n]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3w3n]] is a 2 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=3W3N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3W3N 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]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=RX8:1-[4-AMINO-2-(ETHOXYMETHYL)-1H-IMIDAZO[4,5-C]QUINOLIN-1-YL]-2-METHYLPROPAN-2-OL'>RX8</scene></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=3w3n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3w3n OCA], [https://pdbe.org/3w3n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3w3n RCSB], [https://www.ebi.ac.uk/pdbsum/3w3n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3w3n ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TLR8_HUMAN TLR8_HUMAN] Key component of innate and adaptive immunity. TLRs (Toll-like receptors) control host immune response against pathogens through recognition of molecular patterns specific to microorganisms. Acts via MYD88 and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response.<ref>PMID:17932028</ref> 
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== Publication Abstract from PubMed ==
Toll-like receptor 7 (TLR7) and TLR8 recognize single-stranded RNA and initiate innate immune responses. Several synthetic agonists of TLR7-TLR8 display novel therapeutic potential; however, the molecular basis for ligand recognition and activation of signaling by TLR7 or TLR8 is largely unknown. In this study, the crystal structures of unliganded and ligand-induced activated human TLR8 dimers were elucidated. Ligand recognition was mediated by a dimerization interface formed by two protomers. Upon ligand stimulation, the TLR8 dimer was reorganized such that the two C termini were brought into proximity. The loop between leucine-rich repeat 14 (LRR14) and LRR15 was cleaved; however, the N- and C-terminal halves remained associated and contributed to ligand recognition and dimerization. Thus, ligand binding induces reorganization of the TLR8 dimer, which enables downstream signaling processes.

Structural reorganization of the Toll-like receptor 8 dimer induced by agonistic ligands.,Tanji H, Ohto U, Shibata T, Miyake K, Shimizu T Science. 2013 Mar 22;339(6126):1426-9. doi: 10.1126/science.1229159. PMID:23520111<ref>PMID:23520111</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3w3n" style="background-color:#fffaf0;"></div>

==See Also==
*[[Toll-like Receptor 3D structures|Toll-like Receptor 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Ohto U]]
[[Category: Shimizu T]]
[[Category: Tanji H]]