1OL5

Structure of Aurora-A 122-403, phosphorylated on Thr287, Thr288 and bound to TPX2 1-43

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Structural Basis of Aurora-A Activation by Tpx2 at the Mitotic Spindle

Bayliss, R., Sardon, T., Vernos, I., Conti, E.

(2003) Mol.Cell 12: 851

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Aurora-A is an oncogenic kinase essential for mitotic spindle assembly. It is activated by phosphorylation and by the microtubule-associated protein TPX2, which also localizes the kinase to spindle microtubules. We have uncovered the molecular mechan ...

    Aurora-A is an oncogenic kinase essential for mitotic spindle assembly. It is activated by phosphorylation and by the microtubule-associated protein TPX2, which also localizes the kinase to spindle microtubules. We have uncovered the molecular mechanism of Aurora-A activation by determining crystal structures of its phosphorylated form both with and without a 43 residue long domain of TPX2 that we identified as fully functional for kinase activation and protection from dephosphorylation. In the absence of TPX2, the Aurora-A activation segment is in an inactive conformation, with the crucial phosphothreonine exposed and accessible for deactivation. Binding of TPX2 triggers no global conformational changes in the kinase but pulls on the activation segment, swinging the phosphothreonine into a buried position and locking the active conformation. The recognition between Aurora-A and TPX2 resembles that between the cAPK catalytic core and its flanking regions, suggesting this molecular mechanism may be a recurring theme in kinase regulation.

    Organizational Affiliation: 

    Structural and Computational Biology Programme, European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117, Heidelberg, Germany .




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE KINASE 6
A
282Homo sapiensMutation(s): 0 
Gene Names: AURKA (AIK, AIRK1, ARK1, AURA, AYK1, BTAK, IAK1, STK15, STK6)
EC: 2.7.11.1
Find proteins for O14965 (Homo sapiens)
Go to Gene View: AURKA
Go to UniProtKB:  O14965
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RESTRICTED EXPRESSION PROLIFERATION ASSOCIATED PROTEIN 100
B
43Homo sapiensMutation(s): 0 
Gene Names: TPX2 (C20orf1, C20orf2, DIL2, HCA519)
Find proteins for Q9ULW0 (Homo sapiens)
Go to Gene View: TPX2
Go to UniProtKB:  Q9ULW0
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ADP
Query on ADP
Download SDF File 
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG
Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
A
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.194 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.630α = 90.00
b = 81.720β = 90.00
c = 83.050γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
CNSrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2003-08-06 
  • Released Date: 2003-10-30 
  • Deposition Author(s): Bayliss, R., Conti, E.

Revision History 

  • Version 1.0: 2003-10-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance