7RC9

Crystal structure of human TLR8 ectodomain bound to small molecule antagonist 21


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.76 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.235 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Identification of 2-Pyridinylindole-Based Dual Antagonists of Toll-like Receptors 7 and 8 (TLR7/8).

Sreekantha, R.K.Mussari, C.P.Dodd, D.S.Pasunoori, L.Hegde, S.Posy, S.L.Critton, D.Ruepp, S.Subramanian, M.Salter-Cid, L.M.Tagore, D.M.Sarodaya, S.Dudhgaonkar, S.Poss, M.A.Schieven, G.L.Carter, P.H.Macor, J.E.Dyckman, A.J.

(2022) ACS Med Chem Lett 13: 812-818

  • DOI: https://doi.org/10.1021/acsmedchemlett.2c00049
  • Primary Citation of Related Structures:  
    7RC9

  • PubMed Abstract: 

    The toll-like receptors (TLRs) play key roles in activation of the innate immune system. Aberrant activation of TLR7 and TLR8 pathways can occur in the context of autoimmune disorders due to the elevated presence and recognition of self-RNA as activating ligands. Control of this unintended activation via inhibition of TLR7/8 signaling holds promise for the treatment of diseases such as psoriasis, arthritis, and lupus. Optimization of a 2-pyridinylindole series of compounds led to the identification of potent dual inhibitors of TLR7 and TLR8, which demonstrated good selectivity against TLR9 and other family members. The in vitro characterization and in vivo evaluation in rodent pharmacokinetic/pharmacodynamic and efficacy studies of BMS-905 is detailed, along with structural information obtained through X-ray cocrystallographic studies.


  • Organizational Affiliation

    Biocon Bristol Myers Squibb Research Center (BBRC), Bangalore 560099, India.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Toll-like receptor 8
A, B
811Homo sapiensMutation(s): 0 
Gene Names: TLR8UNQ249/PRO286
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NR97 (Homo sapiens)
Explore Q9NR97 
Go to UniProtKB:  Q9NR97
PHAROS:  Q9NR97
GTEx:  ENSG00000101916 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NR97
Glycosylation
Glycosylation Sites: 10Go to GlyGen: Q9NR97-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, F, H
5N-Glycosylation
Glycosylation Resources
GlyTouCan:  G22768VO
GlyCosmos:  G22768VO
GlyGen:  G22768VO
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
G
4N-Glycosylation
Glycosylation Resources
GlyTouCan:  G81315DD
GlyCosmos:  G81315DD
GlyGen:  G81315DD
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
RQY (Subject of Investigation/LOI)
Query on RQY

Download Ideal Coordinates CCD File 
P [auth A],
X [auth B]
2-(2,6-dimethylpyridin-4-yl)-5-(piperidin-4-yl)-3-(propan-2-yl)-1H-indole
C23 H29 N3
XSXCQWXAFRASGU-UHFFFAOYSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
I [auth A]
J [auth A]
K [auth A]
L [auth A]
M [auth A]
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
Q [auth B],
R [auth B],
S [auth B],
T [auth B],
U [auth B],
V [auth B],
W [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
RQY BindingDB:  7RC9 IC50: min: 3.2, max: 4.2 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.76 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.235 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 160.889α = 90
b = 83.876β = 119.72
c = 153.524γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2022-05-04
    Type: Initial release
  • Version 1.1: 2022-06-01
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description
  • Version 1.3: 2024-10-30
    Changes: Structure summary