2F86

The Association Domain of C. elegans CaMKII


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.64 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Oligomerization states of the association domain and the holoenyzme of Ca2+/CaM kinase II.

Rosenberg, O.S.Deindl, S.Comolli, L.R.Hoelz, A.Downing, K.H.Nairn, A.C.Kuriyan, J.

(2006) Febs J. 273: 682-694

  • DOI: 10.1111/j.1742-4658.2005.05088.x

  • PubMed Abstract: 
  • Ca2+/calmodulin activated protein kinase II (CaMKII) is an oligomeric protein kinase with a unique holoenyzme architecture. The subunits of CaMKII are bound together into the holoenzyme by the association domain, a C-terminal region of approximately ...

    Ca2+/calmodulin activated protein kinase II (CaMKII) is an oligomeric protein kinase with a unique holoenyzme architecture. The subunits of CaMKII are bound together into the holoenzyme by the association domain, a C-terminal region of approximately 140 residues in the CaMKII polypeptide. Single particle analyses of electron micrographs have suggested previously that the holoenyzme forms a dodecamer that contains two stacked 6-fold symmetric rings. In contrast, a recent crystal structure of the isolated association domain of mouse CaMKIIalpha has revealed a tetradecameric assembly with two stacked 7-fold symmetric rings. In this study, we have determined the crystal structure of the Caenorhabditis elegans CaMKII association domain and it too forms a tetradecamer. We also show by electron microscopy that in its fully assembled form the CaMKII holoenzyme is a dodecamer but without the kinase domains, either from expression of the isolated association domain in bacteria or following their removal by proteolysis, the association domains form a tetradecamer. We speculate that the holoenzyme is held in its 6-fold symmetric state by the interactions of the N-terminal approximately 1-335 residues and that the removal of this region allows the association domain to convert into a more stable 7-fold symmetric form.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3202, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hypothetical protein K11E8.1d
B, D, F, H, J, L, N
143Caenorhabditis elegansMutation(s): 0 
Gene Names: unc-43
EC: 2.7.11.17
Find proteins for O62305 (Caenorhabditis elegans)
Go to UniProtKB:  O62305
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.64 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.248 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 70.870α = 90.00
b = 186.934β = 90.00
c = 182.934γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
PHASERphasing
MADNESSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-02-07
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-06-28
    Type: Database references, Source and taxonomy, Structure summary
  • Version 1.4: 2017-10-18
    Type: Refinement description