2WEL

Crystal structure of SU6656-bound calcium/calmodulin-dependent protein kinase II delta in complex with calmodulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

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

  • DOI: 10.1371/journal.pbio.1000426
  • Primary Citation of Related Structures:  

  • 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 Ca ...

    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.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II DELTA CHAIN
A
327Homo sapiensMutation(s): 0 
Gene Names: CAMK2D (CAMKD)
EC: 2.7.11.17
Find proteins for Q13557 (Homo sapiens)
Go to Gene View: CAMK2D
Go to UniProtKB:  Q13557
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CALMODULIN
D
150Homo sapiensMutation(s): 0 
Gene Names: CALM2 (CAM2, CAMB)
Find proteins for P0DP24 (Homo sapiens)
Go to Gene View: CALM2
Go to UniProtKB:  P0DP24
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

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Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
K88
Query on K88

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Download CCD File 
A
(3Z)-N,N-DIMETHYL-2-OXO-3-(4,5,6,7-TETRAHYDRO-1H-INDOL-2-YLMETHYLIDENE)-2,3-DIHYDRO-1H-INDOLE-5-SULFONAMIDE
C19 H21 N3 O3 S
LOGJQOUIVKBFGH-YBEGLDIGSA-N
 Ligand Interaction
CA
Query on CA

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Download CCD File 
D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 68.260α = 90.00
b = 68.850β = 90.00
c = 121.980γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-04-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2011-08-10
    Type: Database references, Non-polymer description, Refinement description
  • Version 1.3: 2018-01-24
    Type: Database references, Structure summary