3UOK

Aurora A in complex with YL5-81-1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.223 

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Literature

A Novel Mechanism by Which Small Molecule Inhibitors Induce the DFG Flip in Aurora A.

Martin, M.P., Zhu, J.Y., Lawrence, H.R., Pireddu, R., Luo, Y., Alam, R., Ozcan, S., Sebti, S.M., Lawrence, N.J., Schonbrunn, E.

(2012) ACS Chem Biol 7: 698-706

  • DOI: 10.1021/cb200508b
  • Primary Citation of Related Structures:  
    3UNJ, 3UNK, 3UNZ, 3UO4, 3UO5, 3UO6, 3UOD, 3UOH, 3UOJ, 3UOK, 3UOL, 3UP2

  • PubMed Abstract: 

    • Most protein kinases share a DFG (Asp-Phe-Gly) motif in the ATP site that can assume two distinct conformations, the active DFG-in and the inactive DFG-out states. Small molecule inhibitors able to induce the DFG-out state have received considerable attention in kinase drug discovery ...

    Most protein kinases share a DFG (Asp-Phe-Gly) motif in the ATP site that can assume two distinct conformations, the active DFG-in and the inactive DFG-out states. Small molecule inhibitors able to induce the DFG-out state have received considerable attention in kinase drug discovery. Using a typical DFG-in inhibitor scaffold of Aurora A, a kinase involved in the regulation of cell division, we found that halogen and nitrile substituents directed at the N-terminally flanking residue Ala273 induced global conformational changes in the enzyme, leading to DFG-out inhibitors that are among the most potent Aurora A inhibitors reported to date. The data suggest an unprecedented mechanism of action, in which induced-dipole forces along the Ala273 side chain alter the charge distribution of the DFG backbone, allowing the DFG to unwind. As the ADFG sequence and three-dimensional structure is highly conserved, DFG-out inhibitors of other kinases may be designed by specifically targeting the flanking alanine residue with electric dipoles.

    Organizational Affiliation: 

    Drug Discovery Department, Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, United States.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aurora kinase AA, B279Homo sapiensMutation(s): 1 
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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14965
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0C6
Query on 0C6
Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]		4-({4-[(2-chlorophenyl)amino]-5-fluoropyrimidin-2-yl}amino)benzoic acid
C17 H12 Cl F N4 O2
BLFRZPJRKJLHGU-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
0C6 PDBBind:  3UOK IC50: 0.8 (nM) from 1 assay(s)
BindingDB:  3UOK IC50: 0.8 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.223 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.75α = 90
b = 85.75β = 90
c = 76.7γ = 120
Software Package:
Software NamePurpose
StructureStudiodata collection
PHENIXmodel building
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

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: 2012-01-25
    Type: Initial release
  • Version 1.1: 2012-05-02
    Changes: Database references