6JQR

Crystal structure of FLT3 in complex with gilteritinib

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report



Literature

Effect of Fms-like tyrosine kinase 3 (FLT3) ligand (FL) on antitumor activity of gilteritinib, a FLT3 inhibitor, in mice xenografted with FL-overexpressing cells.

Kawase, T., Nakazawa, T., Eguchi, T., Tsuzuki, H., Ueno, Y., Amano, Y., Suzuki, T., Mori, M., Yoshida, T.

(2019) Oncotarget 10: 6111-6123

  • DOI: 10.18632/oncotarget.27222
  • Primary Citation of Related Structures:  
    6JQR

  • PubMed Abstract: 

    • Therapeutic effects of FLT3 inhibitors have been reported in acute myeloid leukemia (AML) with constitutively activating FLT3 mutations, including internal tandem duplication (ITD) and point mutation, which are found in approximately one-third o ...

    Therapeutic effects of FLT3 inhibitors have been reported in acute myeloid leukemia (AML) with constitutively activating FLT3 mutations, including internal tandem duplication (ITD) and point mutation, which are found in approximately one-third of AML patients. One of the critical issues of treatment with FLT3 inhibitors in FLT3 -mutated AML is drug resistance. FLT3 ligand (FL) represents a mechanism of resistance to FLT3 inhibitors, including quizartinib, midostaurin, and sorafenib, in AML cells harboring both wild-type and mutant FLT3 ( FLT3 wt / FLT3 mut ). Here, we investigated the effect of FL on the efficacy of gilteritinib, a FLT3 inhibitor, in AML-derived cells in vitro and in mice. In contrast to other FLT3 inhibitors, FL stimulation had little effect on growth inhibition or apoptosis induction by gilteritinib. The antitumor activity of gilteritinib was also comparable between xenograft mouse models injected with FL-expressing and mock MOLM-13 cells. In the FLT3 signaling analyses, gilteritinib inhibited FLT3 wt and FLT3-ITD to a similar degree in HEK293 and Ba/F3 cells, and similarly suppressed FLT3 downstream signaling molecules (including ERK1/2 and STAT5) in both the presence and absence of FL in MOLM-13 cells. Co-crystal structure analysis showed that gilteritinib bound to the ATP-binding pocket of FLT3. These results suggest that gilteritinib has therapeutic potential in FLT3-mutated AML patients with FL overexpression.

    Organizational Affiliation: 

    Drug Discovery Research, Astellas Pharma, Tsukuba-shi, Ibaraki, Japan.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Receptor-type tyrosine-protein kinase FLT3,Receptor-type tyrosine-protein kinase FLT3 A330Homo sapiensMutation(s): 0 
Gene Names: FLT3
EC: 2.7.10.1
Find proteins for P36888 (Homo sapiens)
Explore P36888 
Go to UniProtKB:  P36888
NIH Common Fund Data Resources
PHAROS:  P36888
GTEx:  ENSG00000122025
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C6F
Query on C6F
Download Ideal Coordinates CCD File 
A
6-ethyl-3-[[3-methoxy-4-[4-(4-methylpiperazin-1-yl)piperidin-1-yl]phenyl]amino]-5-(oxan-4-ylamino)pyrazine-2-carboxamide
C29 H44 N8 O3
GYQYAJJFPNQOOW-UHFFFAOYSA-N		 Ligand Interaction
CXS
Query on CXS
Download Ideal Coordinates CCD File 
A
3-CYCLOHEXYL-1-PROPYLSULFONIC ACID
C9 H19 N O3 S
PJWWRFATQTVXHA-UHFFFAOYSA-N		 Ligand Interaction
SO4
Query on SO4
Download Ideal Coordinates CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
C6FIC50:  0.4099999964237213   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.367α = 90
b = 82.367β = 90
c = 146.469γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2019-04-01 
  • Released Date: 2019-11-20 
    • Deposition Author(s): Amano, Y.

Revision History 

  • Version 1.0: 2019-11-20
    Type: Initial release