4JBO

Novel Aurora kinase inhibitors reveal mechanisms of HURP in nucleation of centrosomal and kinetochore microtubules


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report



Literature

Aurora kinase inhibitors reveal mechanisms of HURP in nucleation of centrosomal and kinetochore microtubules.

Wu, J.M.Chen, C.T.Coumar, M.S.Lin, W.H.Chen, Z.J.Hsu, J.T.Peng, Y.H.Shiao, H.Y.Lin, W.H.Chu, C.Y.Wu, J.S.Lin, C.T.Chen, C.P.Hsueh, C.C.Chang, K.Y.Kao, L.P.Huang, C.Y.Chao, Y.S.Wu, S.Y.Hsieh, H.P.Chi, Y.H.

(2013) Proc Natl Acad Sci U S A 110: E1779-E1787

  • DOI: 10.1073/pnas.1220523110
  • Primary Citation of Related Structures:  
    4JBO, 4JBP, 4JBQ

  • PubMed Abstract: 
  • The overexpression of Aurora kinases in multiple tumors makes these kinases appealing targets for the development of anticancer therapies. This study identified two small molecules with a furanopyrimidine core, IBPR001 and IBPR002, that target Aurora ...

    The overexpression of Aurora kinases in multiple tumors makes these kinases appealing targets for the development of anticancer therapies. This study identified two small molecules with a furanopyrimidine core, IBPR001 and IBPR002, that target Aurora kinases and induce a DFG conformation change at the ATP site of Aurora A. Our results demonstrate the high potency of the IBPR compounds in reducing tumorigenesis in a colorectal cancer xenograft model in athymic nude mice. Human hepatoma up-regulated protein (HURP) is a substrate of Aurora kinase A, which plays a crucial role in the stabilization of kinetochore fibers. This study used the IBPR compounds as well as MLN8237, a proven Aurora A inhibitor, as chemical probes to investigate the molecular role of HURP in mitotic spindle formation. These compounds effectively eliminated HURP phosphorylation, thereby revealing the coexistence and continuous cycling of HURP between unphosphorylated and phosphorylated forms that are associated, respectively, with microtubules emanating from centrosomes and kinetochores. Furthermore, these compounds demonstrate a spatial hierarchical preference for HURP in the attachment of microtubules extending from the mother to the daughter centrosome. The finding of inequality in the centrosomal microtubules revealed by these small molecules provides a versatile tool for the discovery of new cell-division molecules for the development of antitumor drugs.


    Organizational Affiliation

    Institutes of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan 35053, Taiwan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aurora kinase AA279Homo sapiensMutation(s): 1 
Gene Names: AURKAAIKAIRK1ARK1AURAAYK1BTAKIAK1STK15STK6
EC: 2.7.11.1
Find proteins for O14965 (Homo sapiens)
Explore O14965 
Go to UniProtKB:  O14965
NIH Common Fund Data Resources
PHAROS  O14965
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
WPH
Query on WPH

Download CCD File 
A
1-(4-{2-[(6-{4-[2-(dimethylamino)ethoxy]phenyl}furo[2,3-d]pyrimidin-4-yl)amino]ethyl}phenyl)-3-phenylurea
C31 H32 N6 O3
GJFJLQXYFZSVOD-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
WPHIC50:  24   nM  Binding MOAD
WPHIC50:  24   nM  BindingDB
WPHIC50 :  24   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.49 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.858α = 90
b = 80.858β = 90
c = 170.984γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-05
    Type: Initial release