4DGL

Crystal Structure of the CK2 Tetrameric Holoenzyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.195 

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

  • 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 regulate ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Casein kinase II subunit beta
A, B
215Homo sapiensMutation(s): 1 
Gene Names: CSNK2B (CK2N, G5A)
Find proteins for P67870 (Homo sapiens)
Go to Gene View: CSNK2B
Go to UniProtKB:  P67870
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Casein kinase II subunit alpha
C, D
335Homo sapiensMutation(s): 0 
Gene Names: CSNK2A1 (CK2A1)
EC: 2.7.11.1
Find proteins for P68400 (Homo sapiens)
Go to Gene View: CSNK2A1
Go to UniProtKB:  P68400
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.195 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 175.652α = 90.00
b = 175.652β = 90.00
c = 96.260γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
SCALAdata scaling
PDB_EXTRACTdata extraction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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