Crystal structure of cAMP bound cGMP-dependent protein kinase(92-227)

Experimental Data Snapshot

  • Resolution: 2.49 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 

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Co-Crystal Structures of PKG Ibeta (92-227) with cGMP and cAMP Reveal the Molecular Details of Cyclic-Nucleotide Binding

Kim, J.J.Casteel, D.E.Huang, G.Kwon, T.H.Ren, R.K.Zwart, P.Headd, J.J.Brown, N.G.Chow, D.C.Palzkill, T.Kim, C.

(2011) PLoS One 6: e18413-e18413

  • DOI: https://doi.org/10.1371/journal.pone.0018413
  • Primary Citation of Related Structures:  
    3OCP, 3OD0, 3OGJ

  • PubMed Abstract: 

    Cyclic GMP-dependent protein kinases (PKGs) are central mediators of the NO-cGMP signaling pathway and phosphorylate downstream substrates that are crucial for regulating smooth muscle tone, platelet activation, nociception and memory formation. As one of the main receptors for cGMP, PKGs mediate most of the effects of cGMP elevating drugs, such as nitric oxide-releasing agents and phosphodiesterase inhibitors which are used for the treatment of angina pectoris and erectile dysfunction, respectively.

  • Organizational Affiliation

    Department of Pharmacology, Baylor College of Medicine, Houston, Texas, United States of America.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PRKG1 protein
A, B
139Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q13976 (Homo sapiens)
Explore Q13976 
Go to UniProtKB:  Q13976
GTEx:  ENSG00000185532 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13976
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on CMP

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C10 H12 N5 O6 P
Binding Affinity Annotations 
IDSourceBinding Affinity
CMP PDBBind:  3OCP Kd: 27 (nM) from 1 assay(s)
Binding MOAD:  3OCP Kd: 27 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.49 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.139α = 90
b = 107.139β = 90
c = 168.967γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description