2IZX

Molecular Basis of AKAP Specificity for PKA Regulatory Subunits

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 

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This is version 1.1 of the entry. See complete history. 


Literature

Molecular Basis of Akap Specificity for Pka Regulatory Subunits.

Gold, M.G., Lygren, B., Dokurno, P., Hoshi, N., Mcconnachie, G., Tasken, K., Carlson, C.R., Scott, J.D., Barford, D.

(2006) Mol Cell 24: 383

  • DOI: 10.1016/j.molcel.2006.09.006
  • Primary Citation of Related Structures:  
    2IZY, 2IZX

  • PubMed Abstract: 

    • Localization of cyclic AMP (cAMP)-dependent protein kinase (PKA) by A kinase-anchoring proteins (AKAPs) restricts the action of this broad specificity kinase. The high-resolution crystal structures of the docking and dimerization (D/D) domain of the RIIalpha regulatory subunit of PKA both in the apo state and in complex with the high-affinity anchoring peptide AKAP-IS explain the molecular basis for AKAP-regulatory subunit recognition ...

    Localization of cyclic AMP (cAMP)-dependent protein kinase (PKA) by A kinase-anchoring proteins (AKAPs) restricts the action of this broad specificity kinase. The high-resolution crystal structures of the docking and dimerization (D/D) domain of the RIIalpha regulatory subunit of PKA both in the apo state and in complex with the high-affinity anchoring peptide AKAP-IS explain the molecular basis for AKAP-regulatory subunit recognition. AKAP-IS folds into an amphipathic alpha helix that engages an essentially preformed shallow groove on the surface of the RII dimer D/D domains. Conserved AKAP aliphatic residues dominate interactions to RII at the predominantly hydrophobic interface, whereas polar residues are important in conferring R subunit isoform specificity. Using a peptide screening approach, we have developed SuperAKAP-IS, a peptide that is 10,000-fold more selective for the RII isoform relative to RI and can be used to assess the impact of PKA isoform-selective anchoring on cAMP-responsive events inside cells.

    Organizational Affiliation: 

    Section of Structural Biology, Institute of Cancer Research, Chester Beatty Laboratories, 237 Fulham Road, London SW3 6JB, United Kingdom.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CAMP-DEPENDENT PROTEIN KINASE TYPE II-ALPHA REGULATORY SUBUNIT A, B41Homo sapiensMutation(s): 0 
Gene Names: PRKAR2A, PKR2, PRKAR2
EC: 2.7.11.11
Find proteins for P13861 (Homo sapiens)
Explore P13861 
Go to UniProtKB:  P13861
NIH Common Fund Data Resources
PHAROS:  P13861
GTEx:  ENSG00000114302
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
AKAP-IS C18synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DTD
Query on DTD
Download Ideal Coordinates CCD File 
A
DITHIANE DIOL
C4 H8 O2 S2
YPGMOWHXEQDBBV-IMJSIDKUSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DTDKd :  0.4000000059604645   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.352α = 90
b = 45.251β = 90
c = 56.837γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-08
    Type: Initial release
  • Version 1.1: 2017-02-08
    Changes: Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance