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

Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

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

  • DOI: 10.1093/emboj/20.7.1651
  • Primary Citation of Related Structures:  

  • 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 ex ...

    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.

    Organizational Affiliation: 

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cAMP-dependent protein kinase type II-alpha regulatory subunit
A, B
46Rattus norvegicusMutation(s): 0 
Gene Names: Prkar2a
Find proteins for P12368 (Rattus norvegicus)
Go to UniProtKB:  P12368
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
24-residues peptide from an a-kinase anchoring protein
C
24Homo sapiensMutation(s): 0 
Gene Names: AKAP13 (BRX, HT31, LBC)
Find proteins for Q12802 (Homo sapiens)
Go to Gene View: AKAP13
Go to UniProtKB:  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

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-29
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance