5AAD

Aurora A kinase bound to an imidazopyridine inhibitor (7a)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.205 

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Ligand Structure Quality Assessment 


This is version 1.1 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: 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 ...

    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: julian.blagg@icr.ac.uk.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AURORA KINASE AA285Homo sapiensMutation(s): 2 
Gene Names: AURKA, AIK, AIRK1, ARK1, AURA, AYK1, BTAK, IAK1, STK15, STK6
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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5GX
Query on 5GX
Download Ideal Coordinates CCD File 
B [auth A]7-(1-benzyl-1H-pyrazol-4-yl)-6-chloro-2-(1,3-dimethyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridine
C21 H18 Cl N7
IDYBEIZHMAGVLB-UHFFFAOYSA-N		 Ligand Interaction
SO4
Query on SO4
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]		SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.205 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.135α = 90
b = 81.135β = 90
c = 171.527γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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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