Crystal structure of mitogen-activated protein kinase 14 (P38-H5) complex with 2-(2-CHLOROPHENYL)-N-(5-(CYCLOPROPYLCARBAMOYL)-2-METHYLPHENYL)-1,3-THIAZOLE-5-CARBOXAMIDE

Experimental Data Snapshot

  • Resolution: 2.27 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.255 

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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


The Identification of Novel P38-Alpha Isoform Selective Kinase Inhibitors Having an Unprecedented P38-Alpha Binding Mode

Wrobleski, S.T.Lin, S.Murali Dhar, T.G.Dyckman, A.J.Li, T.Pitt, S.Zhang, R.Fan, Y.Doweyko, A.M.Tokarski, J.S.Kish, K.F.Kiefer, S.E.Sack, J.S.Newitt, J.A.Witmer, M.R.McKinnon, M.Barrish, J.C.Dodd, J.H.Schieven, G.L.Leftheris, K.

(2013) Bioorg Med Chem Lett 23: 4120-4126

  • DOI: https://doi.org/10.1016/j.bmcl.2013.05.047
  • Primary Citation of Related Structures:  
    4KIN, 4KIP, 4KIQ

  • PubMed Abstract: 

    A novel series of p38 MAP kinase inhibitors with high selectivity for the p38α isoform over the other family members including the highly homologous p38β isoform has been identified. X-ray co-crystallographic studies have revealed an unprecedented kinase binding mode in p38α for representative analogs, 5c and 9d, in which a Leu108/Met109 peptide flip occurs within the p38α hinge region. Based on these findings, a general strategy for the rational design of additional promising p38α isoform selective inhibitors by targeting this novel binding mode is proposed.

  • Organizational Affiliation

    Department of Immunology Chemistry, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543-4000, USA. stephen.wrobleski@bms.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14
A, B
366Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q16539 (Homo sapiens)
Explore Q16539 
Go to UniProtKB:  Q16539
PHAROS:  Q16539
GTEx:  ENSG00000112062 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16539
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 1R9

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C21 H18 Cl N3 O2 S
Binding Affinity Annotations 
IDSourceBinding Affinity
1R9 Binding MOAD:  4KIP IC50: 7 (nM) from 1 assay(s)
BindingDB:  4KIP IC50: 7 (nM) from 1 assay(s)
PDBBind:  4KIP IC50: 7 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.27 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.253 
  • R-Value Observed: 0.255 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.35α = 90
b = 71.59β = 89.85
c = 72.11γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-12
    Type: Initial release
  • Version 1.1: 2013-08-07
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations