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Yorodumi- PDB-6lw1: Cryo-EM structure of TLR7/Cpd-7 (DSR-139970) complex in open form -
+Open data
-Basic information
Entry | Database: PDB / ID: 6lw1 | ||||||
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Title | Cryo-EM structure of TLR7/Cpd-7 (DSR-139970) complex in open form | ||||||
Components | Toll-like receptor 7 | ||||||
Keywords | IMMUNE SYSTEM / TLR7 / antagonist | ||||||
Function / homology | Function and homology information toll-like receptor 7 signaling pathway / response to cGMP / siRNA binding / early phagosome / positive regulation of macrophage cytokine production / pattern recognition receptor activity / toll-like receptor signaling pathway / positive regulation of interferon-alpha production / canonical NF-kappaB signal transduction / positive regulation of chemokine production ...toll-like receptor 7 signaling pathway / response to cGMP / siRNA binding / early phagosome / positive regulation of macrophage cytokine production / pattern recognition receptor activity / toll-like receptor signaling pathway / positive regulation of interferon-alpha production / canonical NF-kappaB signal transduction / positive regulation of chemokine production / JNK cascade / positive regulation of interferon-beta production / positive regulation of interleukin-8 production / regulation of protein phosphorylation / cellular response to virus / positive regulation of interleukin-6 production / cellular response to mechanical stimulus / positive regulation of non-canonical NF-kappaB signal transduction / double-stranded RNA binding / positive regulation of type II interferon production / defense response to virus / lysosome / single-stranded RNA binding / receptor complex / endosome / inflammatory response / innate immune response / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / plasma membrane Similarity search - Function | ||||||
Biological species | Macaca mulatta (Rhesus monkey) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | ||||||
Authors | Zhang, Z. / Ohto, U. / Shimizu, T. | ||||||
Citation | Journal: Nat Commun / Year: 2020 Title: Structural analysis reveals TLR7 dynamics underlying antagonism. Authors: Shingo Tojo / Zhikuan Zhang / Hiroyuki Matsui / Masahiro Tahara / Mitsunori Ikeguchi / Mami Kochi / Mami Kamada / Hideki Shigematsu / Akihisa Tsutsumi / Naruhiko Adachi / Takuma Shibata / ...Authors: Shingo Tojo / Zhikuan Zhang / Hiroyuki Matsui / Masahiro Tahara / Mitsunori Ikeguchi / Mami Kochi / Mami Kamada / Hideki Shigematsu / Akihisa Tsutsumi / Naruhiko Adachi / Takuma Shibata / Masaki Yamamoto / Masahide Kikkawa / Toshiya Senda / Yoshiaki Isobe / Umeharu Ohto / Toshiyuki Shimizu / Abstract: Toll-like receptor 7 (TLR7) recognizes both microbial and endogenous RNAs and nucleosides. Aberrant activation of TLR7 has been implicated in several autoimmune diseases including systemic lupus ...Toll-like receptor 7 (TLR7) recognizes both microbial and endogenous RNAs and nucleosides. Aberrant activation of TLR7 has been implicated in several autoimmune diseases including systemic lupus erythematosus (SLE). Here, by modifying potent TLR7 agonists, we develop a series of TLR7-specific antagonists as promising therapeutic agents for SLE. These compounds protect mice against lethal autoimmunity. Combining crystallography and cryo-electron microscopy, we identify the open conformation of the receptor and reveal the structural equilibrium between open and closed conformations that underlies TLR7 antagonism, as well as the detailed mechanism by which TLR7-specific antagonists bind to their binding pocket in TLR7. Our work provides small-molecule TLR7-specific antagonists and suggests the TLR7-targeting strategy for treating autoimmune diseases. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6lw1.cif.gz | 275.8 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6lw1.ent.gz | 228.9 KB | Display | PDB format |
PDBx/mmJSON format | 6lw1.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/lw/6lw1 ftp://data.pdbj.org/pub/pdb/validation_reports/lw/6lw1 | HTTPS FTP |
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-Related structure data
Related structure data | 30002MC 0999C 1000C 6lvxC 6lvyC 6lvzC 6lw0C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 94745.594 Da / Num. of mol.: 2 Mutation: N145Q/N367Q/S418L/E419VV420P/G421R/F422G/C423S/N466Q/N777Q Source method: isolated from a genetically manipulated source Source: (gene. exp.) Macaca mulatta (Rhesus monkey) / Gene: TLR7 / Production host: Drosophila melanogaster (fruit fly) / References: UniProt: B3Y653 #2: Chemical | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: TLR7/Cpd-7 (DSR-139970) complex / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT | ||||||||||||
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Molecular weight | Value: 0.2 MDa / Experimental value: NO | ||||||||||||
Source (natural) |
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Source (recombinant) | Organism: Drosophila melanogaster (fruit fly) | ||||||||||||
Buffer solution | pH: 4.8 | ||||||||||||
Specimen | Conc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||
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EM software | Name: RELION / Version: 3 / Category: 3D reconstruction | ||||||||||||||||||||||||
CTF correction | Type: NONE | ||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 301212 / Symmetry type: POINT | ||||||||||||||||||||||||
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