5AAG

Aurora A kinase bound to an imidazopyridine inhibitor (14b)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.216 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

7-(Pyrazol-4-Yl)-3H-Imidazo[4,5-B]Pyridine-Based Derivatives for Kinase Inhibition: Co-Crystallisation Studies with Aurora-A Reveal Distinct Differences in the Orientation of the Pyrazole N1-Substituent.

Bavetsias, V.Perez-Fuertes, Y.Mcintyre, P.J.Atrash, B.Kosmopoulou, M.O'Fee, L.Burke, R.Sun, C.Faisal, A.Bush, K.Avery, S.Henley, A.Raynaud, F.I.Linardopoulos, S.Bayliss, R.Blagg, J.

(2015) Bioorg Med Chem Lett 25: 4203

  • DOI: https://doi.org/10.1016/j.bmcl.2015.08.003
  • Primary Citation of Related Structures:  
    5AAD, 5AAE, 5AAF, 5AAG

  • PubMed Abstract: 

    Introduction of a 1-benzyl-1H-pyrazol-4-yl moiety at C7 of the imidazo[4,5-b]pyridine scaffold provided 7a which inhibited a range of kinases including Aurora-A. Modification of the benzyl group in 7a, and subsequent co-crystallisation of the resulting analogues with Aurora-A indicated distinct differences in binding mode dependent upon the pyrazole N-substituent. Compounds 7a and 14d interact with the P-loop whereas 14a and 14b engage with Thr217 in the post-hinge region. These crystallographic insights provide options for the design of compounds interacting with the DFG motif or with Thr217.


  • Organizational Affiliation

    Cancer Research UK Cancer Therapeutics Unit at The Institute of Cancer Research, London, United Kingdom. Electronic address: vassilios.bavetsias@icr.ac.uk.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
AURORA KINASE A285Homo sapiensMutation(s): 2 
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O14965 (Homo sapiens)
Explore O14965 
Go to UniProtKB:  O14965
PHAROS:  O14965
GTEx:  ENSG00000087586 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14965
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
6F2
Query on 6F2

Download Ideal Coordinates CCD File 
B [auth A][3-[[4-[6-chloranyl-2-(1,3-dimethylpyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-7-yl]pyrazol-1-yl]methyl]phenyl]-(4-methylpiperazin-1-yl)methanone
C27 H28 Cl N9 O
MBQJFWXFLPQAID-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.216 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.59α = 90
b = 82.59β = 90
c = 168.84γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2015-09-23
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description