3KK8

CaMKII Substrate Complex A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.72 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Intersubunit capture of regulatory segments is a component of cooperative CaMKII activation.

Chao, L.H.Pellicena, P.Deindl, S.Barclay, L.A.Schulman, H.Kuriyan, J.

(2010) Nat.Struct.Mol.Biol. 17: 264-272

  • DOI: 10.1038/nsmb.1751
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The dodecameric holoenzyme of calcium-calmodulin-dependent protein kinase II (CaMKII) responds to high-frequency Ca(2+) pulses to become Ca(2+) independent. A simple coincidence-detector model for Ca(2+)-frequency dependency assumes noncooperative ac ...

    The dodecameric holoenzyme of calcium-calmodulin-dependent protein kinase II (CaMKII) responds to high-frequency Ca(2+) pulses to become Ca(2+) independent. A simple coincidence-detector model for Ca(2+)-frequency dependency assumes noncooperative activation of kinase domains. We show that activation of CaMKII by Ca(2+)-calmodulin is cooperative, with a Hill coefficient of approximately 3.0, implying sequential kinase-domain activation beyond dimeric units. We present data for a model in which cooperative activation includes the intersubunit 'capture' of regulatory segments. Such a capture interaction is seen in a crystal structure that shows extensive contacts between the regulatory segment of one kinase and the catalytic domain of another. These interactions are mimicked by a natural inhibitor of CaMKII. Our results show that a simple coincidence-detection model cannot be operative and point to the importance of kinetic dissection of the frequency-response mechanism in future experiments.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, California, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Calcium/calmodulin dependent protein kinase II
A
284Caenorhabditis elegansMutation(s): 1 
Gene Names: unc-43
EC: 2.7.11.17
Find proteins for O62305 (Caenorhabditis elegans)
Go to UniProtKB:  O62305
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
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: 1.72 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.178 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 79.361α = 90.00
b = 79.361β = 90.00
c = 175.420γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
DENZOdata reduction
PHENIXrefinement
SCALEPACKdata scaling
SCALAdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description