Biological Assembly 1  

Global Symmetry: Dihedral - D7  (3D View)
Global Stoichiometry: Homo 14-mer - A14 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 231.3 kDa 
• Atom Count: 14,067 
• Modelled Residue Count: 1,787 
• Deposited Residue Count: 2,016 
• Unique protein chains: 1

 2W2C

STRUCTURE OF THE TETRADECAMERIC OLIGOMERISATION DOMAIN OF CALCIUM- CALMODULIN DEPENDENT PROTEIN KINASE II DELTA

• PDB DOI: 10.2210/pdb2W2C/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2008-10-28 Released: 2008-12-23 
• Deposition Author(s): Pike, A.C.W., Rellos, P., Sethi, R., Salah, E., Burgess-Brown, N., Shrestha, L., Roos, A., Murray, J.W., von Delft, F., Edwards, A., Arrowsmith, C.H., Weigelt, J., Bountra, C., Knapp, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.245 
• R-Value Work: 0.211 
• R-Value Observed: 0.212 

Literature

Structure of the Camkiidelta/Calmodulin Complex Reveals the Molecular Mechanism of Camkii Kinase Activation.

Rellos, P., Pike, A.C.W., Niesen, F.H., Salah, E., Lee, W.H., von Delft, F., Knapp, S.

(2010) PLoS Biol 8: 426

• PubMed: 20668654 
• DOI: 10.1371/journal.pbio.1000426
• Primary Citation of Related Structures:  
  2UX0, 2V7O, 2VN9, 2VZ6, 2W2C, 2WEL


• PubMed Abstract: 
  

Long-term potentiation (LTP), a long-lasting enhancement in communication between neurons, is considered to be the major cellular mechanism underlying learning and memory. LTP triggers high-frequency calcium pulses that result in the activation of Calcium/Calmodulin (CaM)-dependent kinase II (CaMKII). CaMKII acts as a molecular switch because it remains active for a long time after the return to basal calcium levels, which is a unique property required for CaMKII function. Here we describe the crystal structure of the human CaMKIIdelta/Ca2+/CaM complex, structures of all four human CaMKII catalytic domains in their autoinhibited states, as well as structures of human CaMKII oligomerization domains in their tetradecameric and physiological dodecameric states. All four autoinhibited human CaMKIIs were monomeric in the determined crystal structures but associated weakly in solution. In the CaMKIIdelta/Ca2+/CaM complex, the inhibitory region adopted an extended conformation and interacted with an adjacent catalytic domain positioning T287 into the active site of the interacting protomer. Comparisons with autoinhibited CaMKII structures showed that binding of calmodulin leads to the rearrangement of residues in the active site to a conformation suitable for ATP binding and to the closure of the binding groove for the autoinhibitory helix by helix alphaD. The structural data, together with biophysical interaction studies, reveals the mechanism of CaMKII activation by calmodulin and explains many of the unique regulatory properties of these two essential signaling molecules.

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Organizational Affiliation: 

University of Oxford, Nuffield Department of Clinical Medicine, Structural Genomics Consortium, Oxford, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II DELTA CHAIN	A, B, C, D, E, F, G, H, I, J, K, L, M, N	144	Homo sapiens	Mutation(s): 0  Gene Names: CAMK2D, CAMKD EC: 2.7.11.17
UniProt & NIH Common Fund Data Resources
Find proteins for Q13557 (Homo sapiens) Explore Q13557  Go to UniProtKB:  Q13557
PHAROS:  Q13557

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	BA [auth J], CA [auth J], DA [auth J], Q [auth B], V [auth F], Y [auth H]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N
ACT	AA [auth J], EA [auth K], FA [auth L], GA [auth M], HA [auth N], O [auth A], P [auth B], R [auth C], S [auth D], T [auth E], U [auth F], W [auth G], X [auth H], Z [auth I]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.245 
• R-Value Work: 0.211 
• R-Value Observed: 0.212 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 149.546	α = 90
b = 117.803	β = 111.92
c = 160.761	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-12-23 
Deposition Author(s): Pike, A.C.W., Rellos, P., Sethi, R., Salah, E., Burgess-Brown, N., Shrestha, L., Roos, A., Murray, J.W., von Delft, F., Edwards, A., Arrowsmith, C.H., Weigelt, J., Bountra, C., Knapp, S.

Revision History  

• Version 1.0: 2008-12-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2011-08-10
  Changes: Database references, Derived calculations, Refinement description
• Version 1.3: 2017-12-20
  Changes: Database references, Structure summary