3SHR

Crystal Structure of cGMP-dependent Protein Kinase Reveals Novel Site of Interchain Communication


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


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Literature

Crystal Structure of cGMP-Dependent Protein Kinase Reveals Novel Site of Interchain Communication.

Osborne, B.W.Wu, J.McFarland, C.J.Nickl, C.K.Sankaran, B.Casteel, D.E.Woods, V.L.Kornev, A.P.Taylor, S.S.Dostmann, W.R.

(2011) Structure 19: 1317-1327

  • DOI: 10.1016/j.str.2011.06.012

  • PubMed Abstract: 
  • The cGMP-dependent protein kinase (PKG) serves as an integral component of second messenger signaling in a number of biological contexts including cell differentiation, memory, and vasodilation. PKG is homodimeric and large conformational changes acc ...

    The cGMP-dependent protein kinase (PKG) serves as an integral component of second messenger signaling in a number of biological contexts including cell differentiation, memory, and vasodilation. PKG is homodimeric and large conformational changes accompany cGMP binding. However, the structure of PKG and the molecular mechanisms associated with protomer communication following cGMP-induced activation remain unknown. Here, we report the 2.5 Å crystal structure of a regulatory domain construct (aa 78-355) containing both cGMP binding sites of PKG Iα. A distinct and segregated architecture with an extended central helix separates the two cGMP binding domains. Additionally, a previously uncharacterized helical domain (switch helix) promotes the formation of a hydrophobic interface between protomers. Mutational disruption of this interaction in full-length PKG implicates the switch helix as a critical site of dimer communication in PKG biology. These results offer new structural insight into the mechanism of allosteric PKG activation.


    Organizational Affiliation

    Department of Pharmacology, College of Medicine, University of Vermont, Burlington, VT 05405, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cGMP-dependent protein kinase 1
A, B
299Bos taurusMutation(s): 0 
Gene Names: PRKG1 (PRKG1B, PRKGR1A, PRKGR1B)
EC: 2.7.11.12
Find proteins for P00516 (Bos taurus)
Go to Gene View: PRKG1
Go to UniProtKB:  P00516
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CMP
Query on CMP

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Download CCD File 
A, B
ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE
CYCLIC AMP; CAMP
C10 H12 N5 O6 P
IVOMOUWHDPKRLL-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.221 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 180.156α = 90.00
b = 66.039β = 113.84
c = 81.550γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-09-21
    Type: Initial release