3RPS

Structure of human CK2alpha in complex with the ATP-competitive inhibitor 3-(4,5,6,7-tetrabromo-1H-benzotriazol-1-yl)propan-1-ol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Enzymatic activity with an incomplete catalytic spine - insights from a comparative structural analysis of human CK2alpha and its paralogous isoform CK2alpha'

Bischoff, N.Raaf, J.Olsen, B.Bretner, M.Issinger, O.G.Niefind, K.

(2011) Mol.Cell.Biochem. 356: 57-65

  • DOI: 10.1007/s11010-011-0948-5
  • Also Cited By: 5OWL, 5OWH, 3U87

  • PubMed Abstract: 
  • Eukaryotic protein kinases are fundamental factors for cellular regulation and therefore subject of strict control mechanisms. For full activity a kinase molecule must be penetrated by two stacks of hydrophobic residues, the regulatory and the cataly ...

    Eukaryotic protein kinases are fundamental factors for cellular regulation and therefore subject of strict control mechanisms. For full activity a kinase molecule must be penetrated by two stacks of hydrophobic residues, the regulatory and the catalytic spine that are normally well conserved among active protein kinases. We apply this novel spine concept here on CK2α, the catalytic subunit of protein kinase CK2. Homo sapiens disposes of two paralog isoforms of CK2α (hsCK2α and hsCK2α'). We describe two new structures of hsCK2α constructs one of which in complex with the ATP-analog adenylyl imidodiphosphate and the other with the ATP-competitive inhibitor 3-(4,5,6,7-tetrabromo-1H-benzotriazol-1-yl)propan-1-ol. The former is the first hsCK2α structure with a well defined cosubstrate/magnesium complex and the second with an open β4/β5-loop. Comparisons of these structures with existing CK2α/CK2α' and cAMP-dependent protein kinase (PKA) structures reveal: in hsCK2α' an open conformation of the interdomain hinge/helix αD region that is critical for ATP-binding is found corresponding to an incomplete catalytic spine. In contrast hsCK2α often adopts the canonical, PKA-like version of the catalytic spine which correlates with a closed conformation of the hinge region. HsCK2α can switch to the incomplete, non-canonical, hsCK2α'-like state of the catalytic spine, but this transition apparently depends on binding of either ATP or of the regulatory subunit CK2β. Thus, ATP looks like an activator of hsCK2α rather than a pure cosubstrate.


    Related Citations: 
    • Crystal structure of human protein kinase CK2: insights into basic properties of the CK2 holoenzyme.
      Niefind, K.,Guerra, B.,Ermakowa, I.,Issinger, O.G.
      (2001) Embo J. 20: 5320
    • Structure of the human protein kinase CK2 catalytic subunit CK2 and interaction thermodynamics with the regulatory subunit CK2
      Bischoff, N.,Olsen, B.,Raaf, J.,Bretner, M.,Issinger, O.G.,Niefind, K.
      (2011) J.Mol.Biol. 407: 1


    Organizational Affiliation

    Universität zu Köln, Institut für Biochemie, Zülpicher Straße 47, 50674 Köln, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Casein kinase II subunit alpha
A, B
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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4B0
Query on 4B0

Download SDF File 
Download CCD File 
A
3-(4,5,6,7-tetrabromo-1H-benzotriazol-1-yl)propan-1-ol
C9 H7 Br4 N3 O
VXLNELSTYPRMEW-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.170 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 72.010α = 90.00
b = 72.010β = 90.00
c = 133.120γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
XDSdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2013-08-21
    Type: Database references