6RFI

IRAK4 IN COMPLEX WITH inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of a Series of 5-Azaquinazolines as Orally Efficacious IRAK4 Inhibitors Targeting MyD88L265PMutant Diffuse Large B Cell Lymphoma.

Degorce, S.L.Anjum, R.Bloecher, A.Carbajo, R.J.Dillman, K.S.Drew, L.Halsall, C.T.Lenz, E.M.Lindsay, N.A.Mayo, M.F.Pink, J.H.Robb, G.R.Rosen, A.Scott, J.S.Xue, Y.

(2019) J Med Chem 62: 9918-9930

  • DOI: 10.1021/acs.jmedchem.9b01346
  • Primary Citation of Related Structures:  
    6RFI, 6RFJ

  • PubMed Abstract: 
  • In this article, we report the discovery of a series of 5-azaquinazolines as selective IRAK4 inhibitors. From modestly potent quinazoline 4 , we introduced a 5-aza substitution to mask the 4-NH hydrogen bond donor (HBD). This allowed us to su ...

    In this article, we report the discovery of a series of 5-azaquinazolines as selective IRAK4 inhibitors. From modestly potent quinazoline 4 , we introduced a 5-aza substitution to mask the 4-NH hydrogen bond donor (HBD). This allowed us to substitute the core with a 2-aminopyrazole, which showed large gains in cellular potency despite the additional formal HBD. Further optimization led to 6-cyanomethyl-5-azaquinazoline 13 , a selective IRAK4 inhibitor, which proved efficacious in combination with ibrutinib, while showing very little activity as a single agent up to 100 mg/kg. This contrasted to previously reported IRAK4 inhibitors that exhibited efficacy in the same model as single agents and was attributed to the enhanced specificity of 13 toward IRAK4.


    Organizational Affiliation

    Discovery Sciences, R&D , AstraZeneca , Gothenburg SE-431 83 , Mölndal , Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-1 receptor-associated kinase 4A, B322Homo 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
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K1H
Query on K1H

Download CCD File 
A, B
methyl 4-[4-[(6-cyanoquinazolin-4-yl)amino]cyclohexyl]piperazine-1-carboxylate
C21 H26 N6 O2
YCFRZMCRPHNZOC-QAQDUYKDSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A,BL-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
A,BL-PEPTIDE LINKINGC4 H10 N O6 PTHR
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
K1HIC50:  37   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.904α = 90
b = 116.781β = 90
c = 141.248γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-10-30
    Type: Initial release
  • Version 1.1: 2019-11-27
    Changes: Database references