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- PDB-7ytp: TLR7 in complex with an inhibitor -

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Basic information

Entry
Database: PDB / ID: 7ytp
TitleTLR7 in complex with an inhibitor
ComponentsToll-like receptor 7
KeywordsIMMUNE SYSTEM / TLR7 / antagonist
Function / homology
Function and homology information


toll-like receptor 7 signaling pathway / toll-like receptor 8 signaling pathway / response to cGMP / siRNA binding / early phagosome / positive regulation of macrophage cytokine production / toll-like receptor signaling pathway / pattern recognition receptor activity / positive regulation of interferon-alpha production / canonical NF-kappaB signal transduction ...toll-like receptor 7 signaling pathway / toll-like receptor 8 signaling pathway / response to cGMP / siRNA binding / early phagosome / positive regulation of macrophage cytokine production / toll-like receptor signaling pathway / pattern recognition receptor activity / 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 / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to virus / positive regulation of interleukin-6 production / positive regulation of type II interferon production / cellular response to mechanical stimulus / double-stranded RNA binding / defense response to virus / positive regulation of canonical NF-kappaB signal transduction / lysosome / single-stranded RNA binding / receptor complex / endosome / inflammatory response / innate immune response / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / metal ion binding / plasma membrane
Similarity search - Function
TIR domain / Cysteine-rich flanking region, C-terminal / Leucine rich repeat C-terminal domain / Toll - interleukin 1 - resistance / TIR domain profile. / Leucine-rich repeat, SDS22-like subfamily / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / Leucine rich repeat / Leucine-rich repeat, typical subtype ...TIR domain / Cysteine-rich flanking region, C-terminal / Leucine rich repeat C-terminal domain / Toll - interleukin 1 - resistance / TIR domain profile. / Leucine-rich repeat, SDS22-like subfamily / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / Leucine rich repeat / Leucine-rich repeat, typical subtype / Leucine-rich repeats, typical (most populated) subfamily / Leucine-rich repeat profile. / Leucine-rich repeat / Leucine-rich repeat domain superfamily
Similarity search - Domain/homology
Chem-JRI / Toll-like receptor 7
Similarity search - Component
Biological speciesMacaca mulatta (Rhesus monkey)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.77 Å
AuthorsZhang, Z. / Ohto, U. / Shimizu, T.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Eur J Pharmacol / Year: 2023
Title: A novel Toll-like receptor 7/8-specific antagonist E6742 ameliorates clinically relevant disease parameters in murine models of lupus.
Authors: Sally T Ishizaka / Lynn Hawkins / Qian Chen / Fumitoshi Tago / Takuya Yagi / Kentaro Sakaniwa / Zhikuan Zhang / Toshiyuki Shimizu / Manabu Shirato /
Abstract: The sensing of self RNA by the endosomal Toll-like receptors (TLRs) 7 and 8 initiates pathogenic mechanisms underlying the autoimmune disease lupus. A blockade of the TLR7/8 signals may, therefore, ...The sensing of self RNA by the endosomal Toll-like receptors (TLRs) 7 and 8 initiates pathogenic mechanisms underlying the autoimmune disease lupus. A blockade of the TLR7/8 signals may, therefore, be a novel therapeutic intervention for lupus. To test the hypothesis, a novel compound E6742 that blocks TLR7/8 activation was identified. The mode of action of E6742 was investigated by analysis of the tertiary structure of TLR7 and 8 in complex with E6742. The in vitro activities of the compound were examined in cellular systems and its therapeutic potential was evaluated in murine lupus models. Tertiary structures of the extracellular domain of TLR7 and 8 in complex with E6742 showed that E6742 binds specifically and non-covalently to the hydrophobic pocket located at the interface of TLR7 or TLR8 homodimers. E6742 potently and selectively inhibited several TLR7/8-mediated cytokine responses in human PBMC. In two mouse models of lupus, oral dosing of E6742 after the onset of disease suppressed increase in autoantibodies and blocked the advance of organ damage. Collectively, the data show that TLR7/8 activation contributes to disease progression and its blocking by E6742 has potential as a therapeutic intervention for lupus.
History
DepositionAug 15, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 15, 2023Provider: repository / Type: Initial release
Revision 1.1Nov 13, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.2Dec 4, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Toll-like receptor 7
B: Toll-like receptor 7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)228,64820
Polymers223,1232
Non-polymers5,52518
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Toll-like receptor 7


Mass: 111561.273 Da / Num. of mol.: 2 / Fragment: extracellular domain,extracellular domain
Mutation: N145Q/N367Q/S418L/E419V/V420P/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: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#3: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#4: Chemical ChemComp-JRI / (2R,6R)-4-(8-cyanoquinolin-5-yl)-N-[(3S,4R)-4-fluoranylpyrrolidin-3-yl]-6-methyl-morpholine-2-carboxamide


Mass: 383.419 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C20H22FN5O2 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: TLR7 in complex with an inhibitor / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.2 MDa / Experimental value: NO
Source (natural)Organism: Macaca mulatta (Rhesus monkey)
Source (recombinant)Organism: Drosophila melanogaster (fruit fly)
Buffer solutionpH: 4.8
SpecimenConc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 61.1 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
EM softwareName: RELION / Version: 3.1.1 / Category: 3D reconstruction
CTF correctionType: NONE
3D reconstructionResolution: 2.77 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 91789 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00212424
ELECTRON MICROSCOPYf_angle_d0.50716838
ELECTRON MICROSCOPYf_dihedral_angle_d5.4451740
ELECTRON MICROSCOPYf_chiral_restr0.0442010
ELECTRON MICROSCOPYf_plane_restr0.0042108

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