Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 33.19 kDa 
• Atom Count: 2105 
• Modelled Residue Count: 252 
• Deposited Residue Count: 282 
• Unique protein chains: 1

4C3R

Structure of dephosphorylated Aurora A (122-403) bound to AMPPCP

• PDB DOI: 10.2210/pdb4C3R/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-08-26 Released: 2014-05-28 
• Deposition Author(s): Zorba, A., Kutter, S., Cho, Y.-J., Kern, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free: 0.306 
• R-Value Work: 0.221 
• R-Value Observed: 0.229 

Literature

Molecular Mechanism of Aurora a Kinase Autophosphorylation and its Allosteric Activation by Tpx2.

Zorba, A., Buosi, V., Kutter, S., Kern, N., Pontiggia, F., Cho, Y.J., Kern, D.

(2014) Elife 3: 02667

• PubMed: 24867643 
• DOI: 10.7554/eLife.02667
• Primary Citation of Related Structures:  
  4C3P, 4C3R


• PubMed Abstract: 
  

We elucidate the molecular mechanisms of two distinct activation strategies (autophosphorylation and TPX2-mediated activation) in human Aurora A kinase. Classic allosteric activation is in play where either activation loop phosphorylation or TPX2 binding to a conserved hydrophobic groove shifts the equilibrium far towards the active conformation. We resolve the controversy about the mechanism of autophosphorylation by demonstrating intermolecular autophosphorylation in a long-lived dimer by combining X-ray crystallography with functional assays. We then address the allosteric activation by TPX2 through activity assays and the crystal structure of a domain-swapped dimer of dephosphorylated Aurora A and TPX2(1-25). While autophosphorylation is the key regulatory mechanism in the centrosomes in the early stages of mitosis, allosteric activation by TPX2 of dephosphorylated Aurora A could be at play in the spindle microtubules. The mechanistic insights into autophosphorylation and allosteric activation by TPX2 binding proposed here, may have implications for understanding regulation of other protein kinases.DOI: http://dx.doi.org/10.7554/eLife.02667.001.

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Organizational Affiliation: 

Department of Biochemistry, Howard Hughes Medical Institute, Brandeis University, Waltham, United States [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AURORA KINASE A	A	282	Homo sapiens	Mutation(s): 0  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 GTEx:  ENSG00000087586

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ACP	B [auth A]	PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER C11 H18 N5 O12 P3 UFZTZBNSLXELAL-IOSLPCCCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free: 0.306 
• R-Value Work: 0.221 
• R-Value Observed: 0.229 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.468	α = 90
b = 83.468	β = 90
c = 172.63	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
iMOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-08-26 
• Released Date: 2014-05-28 
Deposition Author(s): Zorba, A., Kutter, S., Cho, Y.-J., Kern, D.

Revision History  

• Version 1.0: 2014-05-28
  Type: Initial release
  
• Version 1.1: 2014-06-11
  Changes: Database references
• Version 1.2: 2019-05-08
  Changes: Data collection, Experimental preparation, Other