3KK9

CaMKII Substrate Complex B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.272 

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: https://doi.org/10.1038/nsmb.1751
  • Primary Citation of Related Structures:  
    3KK8, 3KK9, 3KL8

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Calcium/calmodulin dependent protein kinase II282Caenorhabditis elegansMutation(s): 1 
Gene Names: unc-43K11E8.1K11E8.1d
UniProt
Find proteins for O62305 (Caenorhabditis elegans)
Go to UniProtKB:  O62305
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TPO
Query on TPO
A
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.270 
  • R-Value Observed: 0.272 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.708α = 90
b = 60.47β = 93.92
c = 70.243γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-10-13
    Changes: Database references, Derived calculations