1R2A

THE MOLECULAR BASIS FOR PROTEIN KINASE A ANCHORING REVEALED BY SOLUTION NMR


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 49 
  • Conformers Submitted: 17 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

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This is version 1.2 of the entry. See complete history


Literature

The molecular basis for protein kinase A anchoring revealed by solution NMR.

Newlon, M.G.Roy, M.Morikis, D.Hausken, Z.E.Coghlan, V.Scott, J.D.Jennings, P.A.

(1999) Nat Struct Biol 6: 222-227

  • DOI: 10.1038/6663
  • Primary Citation of Related Structures:  
    1R2A

  • PubMed Abstract: 
  • Compartmentalization of signal transduction enzymes into signaling complexes is an important mechanism to ensure the specificity of intracellular events. Formation of these complexes is mediated by specialized protein motifs that participate in protein-protein interactions ...

    Compartmentalization of signal transduction enzymes into signaling complexes is an important mechanism to ensure the specificity of intracellular events. Formation of these complexes is mediated by specialized protein motifs that participate in protein-protein interactions. The adenosine 3',5'-cyclic monophosphate (cAMP)-dependent protein kinase (PKA) is localized through interaction of the regulatory (R) subunit dimer with A-kinase-anchoring proteins (AKAPs). We now report the solution structure of the type II PKA R-subunit fragment RIIalpha(1-44), which encompasses both the AKAP-binding and dimerization interfaces. This structure incorporates an X-type four-helix bundle dimerization motif with an extended hydrophobic face that is necessary for high-affinity AKAP binding. NMR data on the complex between RIIalpha(1-44) and an AKAP fragment reveals extensive contacts between the two proteins. Interestingly, this same dimerization motif is present in other signaling molecules, the S100 family. Therefore, the X-type four-helix bundle may represent a conserved fold for protein-protein interactions in signal transduction.


    Related Citations: 
    • A Calculation Strategy for the Structure Determination of Symmetric Dimers by 1H NMR
      Nilges, M.
      (1993) Proteins 17: 297

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (CAMP-DEPENDENT PROTEIN KINASE TYPE II REGULATORY SUBUNIT)A, B46Mus musculusMutation(s): 1 
Gene Names: RIIA(1-44)Prkar2a
EC: 2.7.1.37
UniProt
Find proteins for P12367 (Mus musculus)
Explore P12367 
Go to UniProtKB:  P12367
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 49 
  • Conformers Submitted: 17 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • OLDERADO: 1R2A Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-12-16
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance