P38 ALPHA map kinase complexed with a benzothiazole based inhibitor

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.261 
  • R-Value Observed: 0.263 

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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Benzothiazole based inhibitors of p38alpha MAP kinase.

Liu, C.Lin, J.Pitt, S.Zhang, R.F.Sack, J.S.Kiefer, S.E.Kish, K.Doweyko, A.M.Zhang, H.Marathe, P.H.Trzaskos, J.Mckinnon, M.Dodd, J.H.Barrish, J.C.Schieven, G.L.Leftheris, K.

(2008) Bioorg Med Chem Lett 18: 1874-1879

  • DOI: https://doi.org/10.1016/j.bmcl.2008.02.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Rational design, synthesis, and SAR studies of a novel class of benzothiazole based inhibitors of p38alpha MAP kinase are described. The issue of metabolic instability associated with vicinal phenyl, benzo[d]thiazol-6-yl oxazoles/imidazoles was addressed by the replacement of the central oxazole or imidazole ring with an aminopyrazole system. The proposed binding mode of this new class of p38alpha inhibitors was confirmed by X-ray crystallographic studies of a representative inhibitor (6a) bound to the p38alpha enzyme.

  • Organizational Affiliation

    Bristol-Myers Squibb Research and Development, PO Box 4000, Princeton, NJ 08543-4000, USA. chunjian.liu@bms.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14366Homo 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 P41

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
C19 H16 F N3 O S
Binding Affinity Annotations 
IDSourceBinding Affinity
P41 BindingDB:  3C5U IC50: 6.4 (nM) from 1 assay(s)
PDBBind:  3C5U IC50: 6.4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.261 
  • R-Value Observed: 0.263 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.4α = 90
b = 80.4β = 90
c = 225.323γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2008-03-25 
  • Deposition Author(s): Sack, J.S.

Revision History  (Full details and data files)

  • Version 1.0: 2008-03-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-02-21
    Changes: Data collection, Database references, Derived calculations