6I2U

Aurora-A kinase domain in complex with Coenzyme A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Covalent Aurora A regulation by the metabolic integrator coenzyme A.

Tsuchiya, Y.Byrne, D.P.Burgess, S.G.Bormann, J.Bakovic, J.Huang, Y.Zhyvoloup, A.Yu, B.Y.K.Peak-Chew, S.Tran, T.Bellany, F.Tabor, A.B.Chan, A.E.Guruprasad, L.Garifulin, O.Filonenko, V.Vonderach, M.Ferries, S.Eyers, C.E.Carroll, J.Skehel, M.Bayliss, R.Eyers, P.A.Gout, I.

(2019) Redox Biol 28: 101318-101318

  • DOI: 10.1016/j.redox.2019.101318
  • Primary Citation of Related Structures:  
    6I2U

  • PubMed Abstract: 
  • Aurora A kinase is a master mitotic regulator whose functions are controlled by several regulatory interactions and post-translational modifications. It is frequently dysregulated in cancer, making Aurora A inhibition a very attractive antitumor target. However, recently uncovered links between Aurora A, cellular metabolism and redox regulation are not well understood ...

    Aurora A kinase is a master mitotic regulator whose functions are controlled by several regulatory interactions and post-translational modifications. It is frequently dysregulated in cancer, making Aurora A inhibition a very attractive antitumor target. However, recently uncovered links between Aurora A, cellular metabolism and redox regulation are not well understood. In this study, we report a novel mechanism of Aurora A regulation in the cellular response to oxidative stress through CoAlation. A combination of biochemical, biophysical, crystallographic and cell biology approaches revealed a new and, to our knowledge, unique mode of Aurora A inhibition by CoA, involving selective binding of the ADP moiety of CoA to the ATP binding pocket and covalent modification of Cys290 in the activation loop by the thiol group of the pantetheine tail. We provide evidence that covalent CoA modification (CoAlation) of Aurora A is specific, and that it can be induced by oxidative stress in human cells. Oxidising agents, such as diamide, hydrogen peroxide and menadione were found to induce Thr 288 phosphorylation and DTT-dependent dimerization of Aurora A. Moreover, microinjection of CoA into fertilized mouse embryos disrupts bipolar spindle formation and the alignment of chromosomes, consistent with Aurora A inhibition. Altogether, our data reveal CoA as a new, rather selective, inhibitor of Aurora A, which locks this kinase in an inactive state via a "dual anchor" mechanism of inhibition that might also operate in cellular response to oxidative stress. Finally and most importantly, we believe that these novel findings provide a new rationale for developing effective and irreversible inhibitors of Aurora A, and perhaps other protein kinases containing appropriately conserved Cys residues.


    Organizational Affiliation

    Department of Structural and Molecular Biology, University College London, London, WC1E 6BT, UK; Department of Cell Signaling, Institute of Molecular Biology and Genetics, Kyiv 143, Ukraine. Electronic address: i.gout@ucl.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aurora kinase A A285Homo sapiensMutation(s): 0 
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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
AL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.89α = 90
b = 80.89β = 90
c = 173.34γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomC24461/A23302

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-02
    Type: Initial release