6EKD

Crystal structure of JNK3 in complex with a pyridinylimidazole inhibitor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structural Optimization of a Pyridinylimidazole Scaffold: Shifting the Selectivity from p38 alpha Mitogen-Activated Protein Kinase to c-Jun N-Terminal Kinase 3.

Ansideri, F., Macedo, J.T., Eitel, M., El-Gokha, A., Zinad, D.S., Scarpellini, C., Kudolo, M., Schollmeyer, D., Boeckler, F.M., Blaum, B.S., Laufer, S.A., Koch, P.

(2018) ACS Omega 3: 7809-7831

  • DOI: 10.1021/acsomega.8b00668
  • Primary Citation of Related Structures:  
    6EKD, 6EMH, 6EQ9

  • PubMed Abstract: 

    • Starting from known p38α mitogen-activated protein kinase (MAPK) inhibitors, a series of inhibitors of the c-Jun N-terminal kinase (JNK) 3 was obtained. Altering the substitution pattern of the pyridinylimidazole scaffold proved to be effective in shifti ...

    Starting from known p38α mitogen-activated protein kinase (MAPK) inhibitors, a series of inhibitors of the c-Jun N-terminal kinase (JNK) 3 was obtained. Altering the substitution pattern of the pyridinylimidazole scaffold proved to be effective in shifting the inhibitory activity from the original target p38α MAPK to the closely related JNK3. In particular, a significant improvement for JNK3 selectivity could be achieved by addressing the hydrophobic region I with a small methyl group. Furthermore, additional structural modifications permitted to explore structure-activity relationships. The most potent inhibitor 4-(4-methyl-2-(methylthio)-1 H -imidazol-5-yl)- N -(4-morpholinophenyl)pyridin-2-amine showed an IC 50 value for the JNK3 in the low triple digit nanomolar range and its binding mode was confirmed by X-ray crystallography.

    Organizational Affiliation: 

    Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 10 A367Homo sapiensMutation(s): 0 
Gene Names: MAPK10, JNK3, JNK3A, PRKM10, SAPK1B
EC: 2.7.11.24
Find proteins for P53779 (Homo sapiens)
Explore P53779 
Go to UniProtKB:  P53779
NIH Common Fund Data Resources
PHAROS:  P53779
GTEx:  ENSG00000109339
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
B9K
Query on B9K
Download Ideal Coordinates CCD File 
A
4-(4-methyl-2-methylsulfanyl-1~{H}-imidazol-5-yl)-~{N}-(4-morpholin-4-ylphenyl)pyridin-2-amine
C20 H23 N5 O S
IATSSYNKRCFJAY-UHFFFAOYSA-N		 Ligand Interaction
BME
Query on BME
Download Ideal Coordinates CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
B9KIC50:  184   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.51α = 90
b = 124.82β = 90
c = 68.89γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-08-08
    Type: Initial release
  • Version 1.1: 2018-08-22
    Changes: Data collection, Database references