4YO6

Irak4-inhibitor co-structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Potent and Selective Amidopyrazole Inhibitors of IRAK4 That Are Efficacious in a Rodent Model of Inflammation.

McElroy, W.T.Tan, Z.Ho, G.Paliwal, S.Li, G.Seganish, W.M.Tulshian, D.Tata, J.Fischmann, T.O.Sondey, C.Bian, H.Bober, L.Jackson, J.Garlisi, C.G.Devito, K.Fossetta, J.Lundell, D.Niu, X.

(2015) ACS Med Chem Lett 6: 677-682

  • DOI: 10.1021/acsmedchemlett.5b00106
  • Primary Citation of Related Structures:  
    4YO6, 4YP8

  • PubMed Abstract: 
  • IRAK4 is a critical upstream kinase in the IL-1R/TLR signaling pathway. Inhibition of IRAK4 is hypothesized to be beneficial in the treatment of autoimmune related disorders. A screening campaign identified a pyrazole class of IRAK4 inhibitors that w ...

    IRAK4 is a critical upstream kinase in the IL-1R/TLR signaling pathway. Inhibition of IRAK4 is hypothesized to be beneficial in the treatment of autoimmune related disorders. A screening campaign identified a pyrazole class of IRAK4 inhibitors that were determined by X-ray crystallography to exhibit an unusual binding mode. SAR efforts focused on the identification of a potent and selective inhibitor with good aqueous solubility and rodent pharmacokinetics. Pyrazole C-3 piperidines were well tolerated, with N-sulfonyl analogues generally having good rodent oral exposure but poor solubility. N-Alkyl piperidines exhibited excellent solubility and reduced exposure. Pyrazoles possessing N-1 pyridine and fluorophenyl substituents were among the most active. Piperazine 32 was a potent enzyme inhibitor with good cellular activity. Compound 32 reduced the in vivo production of proinflammatory cytokines and was orally efficacious in a mouse antibody induced arthritis disease model of inflammation.


    Organizational Affiliation

    Discovery Chemistry, Structural Chemistry, In Vitro Pharmacology, and Respiratory and Immunology, Merck Research Laboratories , 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-1 receptor-associated kinase 4ABCD301Homo sapiensMutation(s): 0 
Gene Names: IRAK4
EC: 2.7.11.1
Find proteins for Q9NWZ3 (Homo sapiens)
Explore Q9NWZ3 
Go to UniProtKB:  Q9NWZ3
NIH Common Fund Data Resources
PHAROS  Q9NWZ3
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4GD
Query on 4GD

Download CCD File 
A, B, C, D
N-(3-methyl-1-phenyl-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyrimidine-3-carboxamide
C17 H14 N6 O
MCBSZIDQUDBWTG-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A,B,C,DL-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
A,B,C,DL-PEPTIDE LINKINGC4 H10 N O6 PTHR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4GDIC50:  2200   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.71α = 90
b = 139.55β = 124.97
c = 87.62γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2015-03-11 
  • Released Date: 2015-05-20 
  • Deposition Author(s): Fischmann, T.O.

Revision History 

  • Version 1.0: 2015-05-20
    Type: Initial release
  • Version 1.1: 2015-07-08
    Changes: Database references