Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 239.04 kDa 
• Atom Count: 15,690 
• Modelled Residue Count: 1,935 
• Deposited Residue Count: 2,058 
• Unique protein chains: 1

 1HKX

Crystal structure of calcium/calmodulin-dependent protein kinase

• PDB DOI: 10.2210/pdb1HKX/pdb

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


• Deposited: 2003-03-12 Released: 2003-06-02 
• Deposition Author(s): Hoelz, A., Nairn, A.C., Kuriyan, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.65 Å
• R-Value Free: 0.279 
• R-Value Work: 0.246 
• R-Value Observed: 0.246 

Literature

Crystal Structure of a Tetradecameric Assembly of the Association Domain of Ca2+/Calmodulin-Dependent Kinase II

Hoelz, A., Nairn, A.C., Kuriyan, J.

(2003) Mol Cell 11: 1241

• PubMed: 12769848 
• DOI: 10.1016/s1097-2765(03)00171-0
• Primary Citation of Related Structures:  
  1HKX


• PubMed Abstract: 
  

We report the crystal structure of the 143 residue association domain of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII). The association domain forms a hub-like assembly, composed of two rings of seven protomers each, which are stacked head to head and held together by extensive interfaces. The tetradecameric organization of the assembly was confirmed by analytical ultracentrifugation and multiangle light scattering. Individual protomers form wedge-shaped structures from which N-terminal helical segments that connect to the kinase domain extend toward the equatorial plane of the assembly, consistent with the arrangement of the kinase domains in a second outer ring. A deep and highly conserved pocket present within the association domain may serve as a docking site for proteins that interact with CaMKII.

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Organizational Affiliation: 

The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN	A, B, C, D, E, F, G, H, I, J, K, L, M, N	147	Mus musculus	Mutation(s): 0  Gene Names: Camk2a EC: 2.7.1.123 (PDB Primary Data), 2.7.11.17 (UniProt)
UniProt
Find proteins for P11798 (Mus musculus) Explore P11798  Go to UniProtKB:  P11798

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TBR	Q [auth A]	HEXATANTALUM DODECABROMIDE Br12 Ta6 YWYIQTPPCOBSGN-UHFFFAOYSA-M
DTT	O [auth A]	2,3-DIHYDROXY-1,4-DITHIOBUTANE C4 H10 O2 S2 VHJLVAABSRFDPM-IMJSIDKUSA-N
CL	AA [auth K], BA [auth L], CA [auth M], DA [auth N], P [auth A], R [auth B], S [auth C], T [auth D], U [auth E], V [auth F], W [auth G], X [auth H], Y [auth I], Z [auth J]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.65 Å
• R-Value Free: 0.279 
• R-Value Work: 0.246 
• R-Value Observed: 0.246 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 147.946	α = 90
b = 118.043	β = 110.91
c = 157.82	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
RAVE	phasing
CCP4	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-06-02 
Deposition Author(s): Hoelz, A., Nairn, A.C., Kuriyan, J.

Revision History  

• Version 1.0: 2003-06-02
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-01-25
  Changes: Database references, Other