3U8W

Crystal Structure of p38a Mitogen-Activated Protein Kinase in Complex with a Triazolopyridazinone inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.235 

wwPDB Validation 3D Report Full Report



Literature

Identification of triazolopyridazinones as potent p38alpha inhibitors.

Herberich, B.Jackson, C.Wurz, R.P.Pettus, L.H.Sherman, L.Liu, Q.Henkle, B.Saris, C.J.Wong, L.M.Chmait, S.Lee, M.R.Mohr, C.Hsieh, F.Tasker, A.S.

(2012) Bioorg Med Chem Lett 22: 1226-1229

  • DOI: 10.1016/j.bmcl.2011.11.067
  • Primary Citation of Related Structures:  
    3U8W

  • PubMed Abstract: 
  • Structure-activity relationship (SAR) investigations of a novel class of triazolopyridazinone p38α mitogen activated protein kinase (MAPK) inhibitors are disclosed. From these studies, increased in vitro potency was observed for 2,6-disubstituted phe ...

    Structure-activity relationship (SAR) investigations of a novel class of triazolopyridazinone p38α mitogen activated protein kinase (MAPK) inhibitors are disclosed. From these studies, increased in vitro potency was observed for 2,6-disubstituted phenyl moieties and N-ethyl triazolopyridazinone cores due to key contacts with Leu108, Ala157 and Val38. Further investigation led to the identification of three compounds, 3g, 3j and 3m that are highly potent inhibitors of LPS-induced MAPKAP kinase 2 (MK2) phosphorylation in 50% human whole blood (hWB), and possess desirable in vivo pharmacokinetic and kinase selectivity profiles.


    Organizational Affiliation

    Department of Chemistry Research and Discovery, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, USA. brad.herberich@amgen.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14A366Homo sapiensMutation(s): 0 
Gene Names: MAPK14CSBPCSBP1CSBP2CSPB1MXI2SAPK2A
EC: 2.7.11.24
Find proteins for Q16539 (Homo sapiens)
Explore Q16539 
Go to UniProtKB:  Q16539
NIH Common Fund Data Resources
PHAROS  Q16539
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
09J
Query on 09J

Download CCD File 
A
3-[3-(2-chloro-6-fluorophenyl)-5-ethyl-6-oxo-5,6-dihydro[1,2,4]triazolo[4,3-b]pyridazin-7-yl]-N-cyclopropyl-4-methylbenzamide
C24 H21 Cl F N5 O2
JCOILWGRHHMFON-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
09JIC50:  4.900000095367432   nM  BindingDB
09JIC50 :  1   nM  PDBBind
09JIC50:  1   nM  BindingDB
09JIC50:  3.200000047683716   nM  BindingDB
09JIC50:  1   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.235 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.143α = 90
b = 85.789β = 90
c = 120.569γ = 90
Software Package:
Software NamePurpose
JDirectordata collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2011-10-17 
  • Released Date: 2012-08-29 
  • Deposition Author(s): Mohr, C., Jordan, S.

Revision History 

  • Version 1.0: 2012-08-29
    Type: Initial release