4DGL

Crystal Structure of the CK2 Tetrameric Holoenzyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural determinants of protein kinase CK2 regulation by autoinhibitory polymerization.

Lolli, G.Pinna, L.A.Battistutta, R.

(2012) ACS Chem Biol 7: 1158-1163

  • DOI: 10.1021/cb300054n
  • Primary Citation of Related Structures:  
    4DGL

  • PubMed Abstract: 
  • CK2 is a Ser/Thr protein kinase essential for cell viability whose activity is anomalously high in several cancers. CK2 is a validated target for cancer therapy with one small molecule inhibitor in phase I clinical trials. This enzyme is not regulated by mechanisms common to other protein kinases, and how its activity is controlled is still unclear ...

    CK2 is a Ser/Thr protein kinase essential for cell viability whose activity is anomalously high in several cancers. CK2 is a validated target for cancer therapy with one small molecule inhibitor in phase I clinical trials. This enzyme is not regulated by mechanisms common to other protein kinases, and how its activity is controlled is still unclear. We present a new crystal structure of the CK2 holoenzyme that supports an autoinhibitory mechanism of regulation whereby the β-subunit plays an essential role in the formation of inactive polymeric assemblies. The derived structural model of (down)regulation by aggregation contributes to the interpretation of biochemical and functional data and paves the way for new strategies in the modulation of CK2 activity and for the design of non-ATP-competitive inhibitors targeting the interaction between the α catalytic and the β regulatory subunits.


    Organizational Affiliation

    Department of Chemical Sciences, University of Padua, Padova, Italy. graziano.lolli@unipd.it



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Casein kinase II subunit beta AB215Homo sapiensMutation(s): 1 
Gene Names: CSNK2BCK2NG5A
Find proteins for P67870 (Homo sapiens)
Explore P67870 
Go to UniProtKB:  P67870
NIH Common Fund Data Resources
PHAROS:  P67870
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Casein kinase II subunit alpha CD335Homo sapiensMutation(s): 0 
Gene Names: CSNK2A1CK2A1
EC: 2.7.11.1
Find proteins for P68400 (Homo sapiens)
Explore P68400 
Go to UniProtKB:  P68400
NIH Common Fund Data Resources
PHAROS:  P68400
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 175.652α = 90
b = 175.652β = 90
c = 96.26γ = 120
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-02
    Type: Initial release
  • Version 1.1: 2012-05-16
    Changes: Database references
  • Version 1.2: 2013-01-02
    Changes: Database references