Crystal Structure Analysis of inactive P38 kinase domain in complex with a Monocyclic Pyrazolone Inhibitor

Experimental Data Snapshot

  • Resolution: 1.95 Å

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This is version 1.5 of the entry. See complete history


The development of monocyclic pyrazolone based cytokine synthesis inhibitors.

Golebiowski, A.Townes, J.A.Laufersweiler, M.J.Brugel, T.A.Clark, M.P.Clark, C.M.Djung, J.F.Laughlin, S.K.Sabat, M.P.Bookland, R.G.Vanrens, J.C.De, B.Hsieh, L.C.Janusz, M.J.Walter, R.L.Webster, M.E.Mekel, M.J.

(2005) Bioorg Med Chem Lett 15: 2285-2289

  • DOI: https://doi.org/10.1016/j.bmcl.2005.03.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    4-Aryl-5-pyrimidyl based cytokine synthesis inhibitors that contain a novel monocyclic, pyrazolone heterocyclic core are described. Many of these inhibitors showed low nanomolar activity against LPS-induced TNF-alpha production. One of the compounds (6e) was found to be efficacious in the rat iodoacetate (RIA) in vivo model of osteoarthritis. The X-ray crystal structure of a pyrazolone inhibitor cocrystallized with mutated p38 (mp38) is presented.

  • Organizational Affiliation

    Procter and Gamble Pharmaceuticals, Health Care Research Center, 8700 Mason-Montgomery Rd, Mason, OH 45040, USA. golebiowski.a@pg.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14360Mus musculusMutation(s): 2 
Gene Names: Mapk14Crk1Csbp1Csbp2
Find proteins for P47811 (Mus musculus)
Explore P47811 
Go to UniProtKB:  P47811
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP47811
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on LI9

Download Ideal Coordinates CCD File 
C27 H29 F N6 O
Binding Affinity Annotations 
IDSourceBinding Affinity
LI9 Binding MOAD:  1YWR IC50: 32 (nM) from 1 assay(s)
PDBBind:  1YWR IC50: 13 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.95 Å
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.736α = 90
b = 74.575β = 90
c = 77.377γ = 90
Software Package:
Software NamePurpose
SHELXmodel building
MAR345data collection
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2005-05-10
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.5: 2024-02-14
    Changes: Data collection