3IW6

Human p38 MAP Kinase in Complex with a Benzylpiperazin-Pyrrol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

High-Throughput Screening To Identify Inhibitors Which Stabilize Inactive Kinase Conformations in p38alpha

Simard, J.R.Gruetter, C.Pawar, V.Aust, B.Wolf, A.Rabiller, M.Wulfert, S.Robubi, A.Kluter, S.Ottmann, C.Rauh, D.

(2009) J Am Chem Soc 131: 18478-18488

  • DOI: 10.1021/ja907795q
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Small molecule kinase inhibitors are an attractive means to modulate kinase activities in medicinal chemistry and chemical biology research. In the physiological setting of a cell, kinase function is orchestrated by a plethora of regulatory processes ...

    Small molecule kinase inhibitors are an attractive means to modulate kinase activities in medicinal chemistry and chemical biology research. In the physiological setting of a cell, kinase function is orchestrated by a plethora of regulatory processes involving the structural transition of kinases between inactive and enzymatically competent conformations and vice versa. The development of novel kinase inhibitors is mainly fostered by high-throughput screening initiatives where the small molecule perturbation of the phosphorylation reaction is measured to identify inhibitors. Such setups require enzymatically active kinase preparations and present a risk of solely identifying classical ATP-competitive Type I inhibitors. Here we report the high-throughput screening of a library of approximately 35000 small organic molecules with an assay system that utilizes enzymatically inactive human p38alpha MAP kinase to detect stabilizers of the pharmacologically more desirable DFG-out conformation. We used protein X-ray crystallography to characterize the binding mode of hit compounds and reveal structural features which explain how these ligands stabilize and/or induce the DFG-out conformation. Lastly, we show that although some of the hit compounds were confirmed by protein X-ray crystallography, they were not detected in classic phosphorylation assays, thus validating the unique sensitivity of the assay system used in this study and highlighting the potential of screening with inactive kinase preparations.


    Organizational Affiliation

    Chemical Genomics Centre of the Max Planck Society, Otto-Hahn-Strasse 15, D-44227 Dortmund, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase 14
A
360Homo sapiensMutation(s): 4 
Gene Names: MAPK14CSBPCSBP1CSBP2CSPB1MXI2SAPK2A
EC: 2.7.11.24
Find proteins for Q16539 (Homo sapiens)
Go to UniProtKB:  Q16539
NIH Common Fund Data Resources
PHAROS  Q16539
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PP0
Query on PP0

Download CCD File 
A
ethyl 4-[(4-benzylpiperazin-1-yl)carbonyl]-1-ethyl-3,5-dimethyl-1H-pyrrole-2-carboxylate
C23 H31 N3 O3
BEPDKTMMVYTHND-UHFFFAOYSA-N
 Ligand Interaction
BOG
Query on BOG

Download CCD File 
A
B-OCTYLGLUCOSIDE
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PP0Kd:  3290   nM  Binding MOAD
PP0Kd:  3290   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70α = 90
b = 68.74β = 90
c = 74γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance