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3wpi

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Revision as of 17:20, 9 March 2017

Crystal structure of mouse TLR9 in complex with inhibitory DNA_super

Structural highlights

3wpi is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	3wpb, 3wpc, 3wpd, 3wpe, 3wpf, 3wpg, 3wph
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[TLR9_MOUSE] 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. TLR9 is a nucleotide-sensing TLR which is activated by unmethylated cytidine-phosphate-guanosine (CpG) dinucleotides. Acts via MYD88 and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response. Plays a role in defense against systemic mouse cytomegalovirus infection. Controls lymphocyte response to Helicobacter infection.^[1] ^[2]

Publication Abstract from PubMed

Innate immunity serves as the first line of defence against invading pathogens such as bacteria and viruses. Toll-like receptors (TLRs) are examples of innate immune receptors, which sense specific molecular patterns from pathogens and activate immune responses. TLR9 recognizes bacterial and viral DNA containing the cytosine-phosphate-guanine (CpG) dideoxynucleotide motif. The molecular basis by which CpG-containing DNA (CpG-DNA) elicits immunostimulatory activity via TLR9 remains to be elucidated. Here we show the crystal structures of three forms of TLR9: unliganded, bound to agonistic CpG-DNA, and bound to inhibitory DNA (iDNA). Agonistic-CpG-DNA-bound TLR9 formed a symmetric TLR9-CpG-DNA complex with 2:2 stoichiometry, whereas iDNA-bound TLR9 was a monomer. CpG-DNA was recognized by both protomers in the dimer, in particular by the amino-terminal fragment (LRRNT-LRR10) from one protomer and the carboxy-terminal fragment (LRR20-LRR22) from the other. The iDNA, which formed a stem-loop structure suitable for binding by intramolecular base pairing, bound to the concave surface from LRR2-LRR10. This structure serves as an important basis for improving our understanding of the functional mechanisms of TLR9.

Structural basis of CpG and inhibitory DNA recognition by Toll-like receptor 9.,Ohto U, Shibata T, Tanji H, Ishida H, Krayukhina E, Uchiyama S, Miyake K, Shimizu T Nature. 2015 Apr 30;520(7549):702-5. doi: 10.1038/nature14138. Epub 2015 Feb 9. PMID:25686612^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Tabeta K, Georgel P, Janssen E, Du X, Hoebe K, Crozat K, Mudd S, Shamel L, Sovath S, Goode J, Alexopoulou L, Flavell RA, Beutler B. Toll-like receptors 9 and 3 as essential components of innate immune defense against mouse cytomegalovirus infection. Proc Natl Acad Sci U S A. 2004 Mar 9;101(10):3516-21. Epub 2004 Mar 1. PMID:14993594 doi:http://dx.doi.org/10.1073/pnas.0400525101
↑ Anderson AE, Worku ML, Khamri W, Bamford KB, Walker MM, Thursz MR. TLR9 polymorphisms determine murine lymphocyte responses to Helicobacter: results from a genome-wide scan. Eur J Immunol. 2007 Jun;37(6):1548-61. PMID:17474149 doi:http://dx.doi.org/10.1002/eji.200636562
↑ Ohto U, Shibata T, Tanji H, Ishida H, Krayukhina E, Uchiyama S, Miyake K, Shimizu T. Structural basis of CpG and inhibitory DNA recognition by Toll-like receptor 9. Nature. 2015 Apr 30;520(7549):702-5. doi: 10.1038/nature14138. Epub 2015 Feb 9. PMID:25686612 doi:http://dx.doi.org/10.1038/nature14138

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3wpi"

@@ Line 1: / Line 1: @@
 ==Crystal structure of mouse TLR9 in complex with inhibitory DNA_super==
 <StructureSection load='3wpi' size='340' side='right' caption='[[3wpi]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3wpb|3wpb]], [[3wpc|3wpc]], [[3wpd|3wpd]], [[3wpe|3wpe]], [[3wpf|3wpf]], [[3wpg|3wpg]], [[3wph|3wph]]</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=3wpi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wpi OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3wpi RCSB], [http://www.ebi.ac.uk/pdbsum/3wpi PDBsum]</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=3wpi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wpi OCA], [http://pdbe.org/3wpi PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3wpi RCSB], [http://www.ebi.ac.uk/pdbsum/3wpi PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3wpi ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3wpi" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Toll-like Receptors|Toll-like Receptors]]
 == References ==
 <references/>

3wpi

From Proteopedia

Revision as of 17:20, 9 March 2017

Crystal structure of mouse TLR9 in complex with inhibitory DNA_super

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

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Proteopedia Page Contributors and Editors (what is this?)

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