Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.33 kDa 
• Atom Count: 940 
• Modelled Residue Count: 116 
• Deposited Residue Count: 116 
• Unique protein chains: 2

2DRN

Docking and dimerization domain (D/D) of the Type II-alpha regulatory subunity of protein kinase A (PKA) in complex with a peptide from an A-kinase anchoring protein

• PDB DOI: 10.2210/pdb2DRN/pdb

• Classification: TRANSFERASE
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2006-06-11 Released: 2006-08-29 
• Deposition Author(s): Newlon, M.G., Roy, M., Morikis, D., Hausken, Z.E., Coghlan, V., Scott, J.D., Jennings, P.A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 13 
• Selection Criteria: structures with the lowest energy 

Literature

A novel mechanism of PKA anchoring revealed by solution structures of anchoring complexes.

Newlon, M.G., Roy, M., Morikis, D., Carr, D.W., Westphal, R., Scott, J.D., Jennings, P.A.

(2001) EMBO J 20: 1651-1662

• PubMed: 11285229 
• DOI: 10.1093/emboj/20.7.1651
• Primary Citation of Related Structures:  
  2DRN, 2H9R


• PubMed Abstract: 
  

The specificity of intracellular signaling events is controlled, in part, by compartmentalization of protein kinases and phosphatases. The subcellular localization of these enzymes is often maintained by protein- protein interactions. A prototypic example is the compartmentalization of the cAMP-dependent protein kinase (PKA) through its association with A-kinase anchoring proteins (AKAPs). A docking and dimerization domain (D/D) located within the first 45 residues of each regulatory (R) subunit protomer forms a high affinity binding site for its anchoring partner. We now report the structures of two D/D-AKAP peptide complexes obtained by solution NMR methods, one with Ht31(493-515) and the other with AKAP79(392-413). We present the first direct structural data demonstrating the helical nature of the peptides. The structures reveal conserved hydrophobic interaction surfaces on the helical AKAP peptides and the PKA R subunit, which are responsible for mediating the high affinity association in the complexes. In a departure from the dimer-dimer interactions seen in other X-type four-helix bundle dimeric proteins, our structures reveal a novel hydrophobic groove that accommodates one AKAP per RIIalpha D/D.

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Organizational Affiliation: 

The Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0359, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cAMP-dependent protein kinase type II-alpha regulatory subunit	A, B	46	Rattus norvegicus	Mutation(s): 0  Gene Names: RIIA(1-44), Prkar2a EC: 2.7.1.37
UniProt
Find proteins for P12368 (Rattus norvegicus) Explore P12368  Go to UniProtKB:  P12368

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
24-residues peptide from an a-kinase anchoring protein	C	24	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q12802 (Homo sapiens) Explore Q12802  Go to UniProtKB:  Q12802
PHAROS:  Q12802

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 13 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2DRN Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-06-11 
• Released Date: 2006-08-29 
Deposition Author(s): Newlon, M.G., Roy, M., Morikis, D., Hausken, Z.E., Coghlan, V., Scott, J.D., Jennings, P.A.

Revision History  

• Version 1.0: 2006-08-29
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-09
  Changes: Database references, Derived calculations