6MOM

Crystal structure of human Interleukin-1 receptor associated Kinase 4 (IRAK 4, CID 100300) in complex with compound NCC00371481 (BSI 107591)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

wwPDB Validation 3D Report Full Report



Literature

Overcoming adaptive therapy resistance in AML by targeting immune response pathways.

Melgar, K., Walker, M.M., Jones, L.M., Bolanos, L.C., Hueneman, K., Wunderlich, M., Jiang, J.K., Wilson, K.M., Zhang, X., Sutter, P., Wang, A., Xu, X., Choi, K., Tawa, G., Lorimer, D., Abendroth, J., O'Brien, E., Hoyt, S.B., Berman, E., Famulare, C.A., Mulloy, J.C., Levine, R.L., Perentesis, J.P., Thomas, C.J., Starczynowski, D.T.

(2019) Sci Transl Med 11

  • DOI: 10.1126/scitranslmed.aaw8828
  • Primary Citation of Related Structures:  
    6MOM

  • PubMed Abstract: 

    • Targeted inhibitors to oncogenic kinases demonstrate encouraging clinical responses early in the treatment course; however, most patients will relapse because of target-dependent mechanisms that mitigate enzyme-inhibitor binding or through target-ind ...

    Targeted inhibitors to oncogenic kinases demonstrate encouraging clinical responses early in the treatment course; however, most patients will relapse because of target-dependent mechanisms that mitigate enzyme-inhibitor binding or through target-independent mechanisms, such as alternate activation of survival and proliferation pathways, known as adaptive resistance. Here, we describe mechanisms of adaptive resistance in FMS-like receptor tyrosine kinase (FLT3)-mutant acute myeloid leukemia (AML) by examining integrative in-cell kinase and gene regulatory network responses after oncogenic signaling blockade by FLT3 inhibitors (FLT3i). We identified activation of innate immune stress response pathways after treatment of FLT3-mutant AML cells with FLT3i and showed that innate immune pathway activation via the interleukin-1 receptor-associated kinase 1 and 4 (IRAK1/4) complex contributes to adaptive resistance in FLT3-mutant AML cells. To overcome this adaptive resistance mechanism, we developed a small molecule that simultaneously inhibits FLT3 and IRAK1/4 kinases. The multikinase FLT3-IRAK1/4 inhibitor eliminated adaptively resistant FLT3-mutant AML cells in vitro and in vivo and displayed superior efficacy as compared to current targeted FLT3 therapies. These findings uncover a polypharmacologic strategy for overcoming adaptive resistance to therapy in AML by targeting immune stress response pathways.

    Organizational Affiliation: 

    Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-1 receptor-associated kinase 4A, B, C, D303Homo 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
GTEx  ENSG00000198001
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
JX4
Query on JX4
Download CCD File 
A, B, C, D
6-[7-methoxy-6-(1-methyl-1H-pyrazol-4-yl)imidazo[1,2-a]pyridin-3-yl]-N-[(3R)-pyrrolidin-3-yl]pyridin-2-amine
C21 H23 N7 O
IALDYVNFZAPNJV-OAHLLOKOSA-N		 Ligand Interaction
EDO
Query on EDO
Download CCD File 
B, D
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-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 %)
JX4IC50:  0.800000011920929   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.29α = 90
b = 141.91β = 126.22
c = 87.89γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
MoRDaphasing
Cootmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-10-16
    Type: Initial release