Crystal structure of P38 kinase in complex with a pyrrole-2-carboxamide inhibitor

Experimental Data Snapshot

  • Resolution: 1.89 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 

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This is version 1.2 of the entry. See complete history


The discovery and initial optimisation of pyrrole-2-carboxamides as inhibitors of p38alpha MAP kinase.

Down, K.Bamborough, P.Alder, C.Campbell, A.Christopher, J.A.Gerelle, M.Ludbrook, S.Mallett, D.Mellor, G.Miller, D.D.Pearson, R.Ray, K.Solanke, Y.Somers, D.

(2010) Bioorg Med Chem Lett 20: 3936-3940

  • DOI: https://doi.org/10.1016/j.bmcl.2010.05.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A novel pyrrole-2-carboxamide series of p38alpha inhibitors, discovered through the application of virtual screening, is presented. Following evaluation of activity, selectivity and developability properties of commercially available analogues, a synthesis program enabled rapid assessment of the series' suitability for further lead optimisation studies.

  • Organizational Affiliation

    GlaxoSmithKline R&D, Medicines Research Centre, Stevenage, Hertfordshire, UK. kenneth.d.down@gsk.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14371Homo 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
Binding Affinity Annotations 
IDSourceBinding Affinity
1GK PDBBind:  3MPT IC50: 251 (nM) from 1 assay(s)
Binding MOAD:  3MPT IC50: 250 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.89 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.376α = 90
b = 85.859β = 90
c = 124.463γ = 90
Software Package:
Software NamePurpose
d*TREKdata scaling
PDB_EXTRACTdata extraction
MAR345dtbdata collection
d*TREKdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2010-07-07 
  • Deposition Author(s): Somers, D.O.

Revision History  (Full details and data files)

  • Version 1.0: 2010-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description