Aurora A in complex with YL1-038-21

Experimental Data Snapshot

  • Resolution: 3.05 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Development of o-Chlorophenyl Substituted Pyrimidines as Exceptionally Potent Aurora Kinase Inhibitors.

Lawrence, H.R.Martin, M.P.Luo, Y.Pireddu, R.Yang, H.Gevariya, H.Ozcan, S.Zhu, J.Y.Kendig, R.Rodriguez, M.Elias, R.Cheng, J.Q.Sebti, S.M.Schonbrunn, E.Lawrence, N.J.

(2012) J Med Chem 55: 7392-7416

  • DOI: https://doi.org/10.1021/jm300334d
  • Primary Citation of Related Structures:  
    3UP7, 4DEA, 4DEB, 4DED, 4DEE

  • PubMed Abstract: 

    The o-carboxylic acid substituted bisanilinopyrimidine 1 was identified as a potent hit (Aurora A IC(50) = 6.1 ± 1.0 nM) from in-house screening. Detailed structure-activity relationship (SAR) studies indicated that polar substituents at the para position of the B-ring are critical for potent activity. X-ray crystallography studies revealed that compound 1 is a type I inhibitor that binds the Aurora kinase active site in a DFG-in conformation. Structure-activity guided replacement of the A-ring carboxylic acid with halogens and incorporation of fluorine at the pyrimidine 5-position led to highly potent inhibitors of Aurora A that bind in a DFG-out conformation. B-Ring modifications were undertaken to improve the solubility and cell permeability. Compounds such as 9m with water-solubilizing moieties at the para position of the B-ring inhibited the autophosphorylation of Aurora A in MDA-MB-468 breast cancer cells.

  • Organizational Affiliation

    Department of Drug Discovery, Moffitt Cancer Center, 12902 Magnolia Drive, Tampa, FL 33612, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Aurora kinase A279Homo sapiensMutation(s): 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
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
NHU PDBBind:  4DED IC50: 38.2 (nM) from 1 assay(s)
BindingDB:  4DED IC50: 38.2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 3.05 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.89α = 90
b = 82.89β = 90
c = 171.32γ = 120
Software Package:
Software NamePurpose
PHENIXmodel building
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-08-22
    Type: Initial release
  • Version 1.1: 2012-09-12
    Changes: Database references
  • Version 1.2: 2012-09-26
    Changes: Database references
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description