6VPG

TPX2 residues 7-20 fused to Aurora A residues 116-389 in complex with AMP-PNP

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

  • Deposited: 2020-02-03 Released: 2020-08-05 
  • Deposition Author(s): Lim, D.C., Yaffe, M.B.
  • Funding Organization(s): National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.64 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.204 

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Ligand Structure Quality Assessment 


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Literature

Redox priming promotes Aurora A activation during mitosis.

Lim, D.C., Joukov, V., Rettenmaier, T.J., Kumagai, A., Dunphy, W.G., Wells, J.A., Yaffe, M.B.

(2020) Sci Signal 13

  • DOI: https://doi.org/10.1126/scisignal.abb6707
  • Primary Citation of Related Structures:  
    6VPG, 6VPH, 6VPI, 6VPJ, 6VPL, 6VPM, 6XKA

  • PubMed Abstract: 

    • Cell cycle-dependent redox changes can mediate transient covalent modifications of cysteine thiols to modulate the activities of regulatory kinases and phosphatases. Our previously reported finding that protein cysteine oxidation is increased during mitosis relative to other cell cycle phases suggests that redox modifications could play prominent roles in regulating mitotic processes ...

    Cell cycle-dependent redox changes can mediate transient covalent modifications of cysteine thiols to modulate the activities of regulatory kinases and phosphatases. Our previously reported finding that protein cysteine oxidation is increased during mitosis relative to other cell cycle phases suggests that redox modifications could play prominent roles in regulating mitotic processes. The Aurora family of kinases and their downstream targets are key components of the cellular machinery that ensures the proper execution of mitosis and the accurate segregation of chromosomes to daughter cells. In this study, x-ray crystal structures of the Aurora A kinase domain delineate redox-sensitive cysteine residues that, upon covalent modification, can allosterically regulate kinase activity and oligomerization state. We showed in both Xenopus laevis egg extracts and mammalian cells that a conserved cysteine residue within the Aurora A activation loop is crucial for Aurora A activation by autophosphorylation. We further showed that covalent disulfide adducts of this residue promote autophosphorylation of the Aurora A kinase domain. These findings reveal a potential mechanistic link between Aurora A activation and changes in the intracellular redox state during mitosis and provide insights into how novel small-molecule inhibitors may be developed to target specific subpopulations of Aurora A.

    Organizational Affiliation: 

    Divisions of Acute Care Surgery, Trauma, and Surgical Critical Care, and Surgical Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TPX2 fragment - Aurora A kinase domain fusionA292Homo sapiensMutation(s): 0 
Gene Names: 
TPX2, C20orf1, C20orf2, DIL2, HCA519, AURKA, AIK, AIRK1, ARK1, AURA, AYK1, BTAK, IAK1, STK15, STK6

EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9ULW0 (Homo sapiens)
Explore Q9ULW0 
Go to UniProtKB:  Q9ULW0
PHAROS:  Q9ULW0
Find proteins for O14965 (Homo sapiens)
Explore O14965 
Go to UniProtKB:  O14965
PHAROS:  O14965
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsO14965Q9ULW0
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP (Subject of Investigation/LOI)
Query on ANP
Download Ideal Coordinates CCD File 
B [auth A]PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
C [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
CL
Query on CL
Download Ideal Coordinates CCD File 
D [auth A],
E [auth A]		CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
F [auth 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: 2.64 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.204 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.562α = 90
b = 83.562β = 90
c = 114.516γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata scaling
AMoREphasing
PDB_EXTRACTdata extraction
DENZOdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesES015339
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesES028374
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesES020466
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM104047

Revision History  (Full details and data files)

  • Version 1.0: 2020-08-05
    Type: Initial release