Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 37.52 kDa 
• Atom Count: 2343 
• Modelled Residue Count: 279 
• Deposited Residue Count: 332 
• Unique protein chains: 1

1A06

CALMODULIN-DEPENDENT PROTEIN KINASE FROM RAT

• DOI: 10.2210/pdb1A06/pdb

• Classification: KINASE
• Organism(s): Rattus norvegicus
• Mutation(s): No 


• Deposited: 1997-12-09 Released: 1998-04-08 
• Deposition Author(s): Kuriyan, J., Goldberg, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.313 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 

Literature

Structural basis for the autoinhibition of calcium/calmodulin-dependent protein kinase I.

Goldberg, J., Nairn, A.C., Kuriyan, J.

(1996) Cell 84: 875-887

• PubMed: 8601311 
• DOI: 10.1016/s0092-8674(00)81066-1
• Primary Citation of Related Structures:  
  1A06


• PubMed Abstract: 
  

The crystal structure of calcium/calmodulin-dependent protein kinase I has been determined in the autoinhibited form. The C-terminal regulatory region of the enzyme forms a helix-loop-helix segment that extends across the two domains of the catalytic core, making multiple inhibitory interactions. Elements of the first regulatory alpha helix and the loop interfere with the binding site for peptide substrates, while the loop and the second helix interact with the ATP-binding domain to induce conformational changes that obstruct the nucleotide binding pocket. One part of the calmodulin recognition element protrudes away from the catalytic domain and is potentially available for an initial interaction with calmodulin. The structure provides a view of an intact calmodulin target and suggests that substantial structural changes will accompany kinase activation by calmodulin binding to the regulatory region.

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Organizational Affiliation: 

Howard Hughes Medical Institute, The Rockefeller University, New York, 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE	A	332	Rattus norvegicus	Mutation(s): 0  Gene Names: Camk1 EC: 2.7.1.123 (PDB Primary Data), 2.7.11.17 (UniProt)
UniProt
Find proteins for Q63450 (Rattus norvegicus) Explore Q63450  Go to UniProtKB:  Q63450

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.313 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.2	α = 90
b = 76	β = 90
c = 148.2	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-12-09 
• Released Date: 1998-04-08 
Deposition Author(s): Kuriyan, J., Goldberg, J.

Revision History  

• Version 1.0: 1998-04-08
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance