Crystal structure of PDE4D2 in complex with (R,S)-rolipram

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.266 
  • R-Value Observed: 0.233 

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This is version 1.3 of the entry. See complete history


Three-dimensional structures of PDE4D in complex with roliprams and implication on inhibitor selectivity

Huai, Q.Wang, H.Sun, Y.Kim, H.Y.Liu, Y.Ke, H.

(2003) Structure 11: 865-873

  • DOI: https://doi.org/10.1016/s0969-2126(03)00123-0
  • Primary Citation of Related Structures:  
    1OYN, 1Q9M

  • PubMed Abstract: 

    Selective inhibitors against the 11 families of cyclic nucleotide phosphodiesterases (PDEs) are used to treat various human diseases. How the inhibitors selectively bind the conserved PDE catalytic domains is unknown. The crystal structures of the PDE4D2 catalytic domain in complex with (R)- or (R,S)-rolipram suggest that inhibitor selectivity is determined by the chemical nature of amino acids and subtle conformational changes of the binding pockets. The conformational states of Gln369 in PDE4D2 may play a key role in inhibitor recognition. The corresponding Y329S mutation in PDE7 may lead to loss of the hydrogen bonds between rolipram and Gln369 and is thus a possible reason explaining PDE7's insensitivity to rolipram inhibition. Docking of the PDE5 inhibitor sildenafil into the PDE4 catalytic pocket further helps understand inhibitor selectivity.

  • Organizational Affiliation

    Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, Chapel Hill, NC 27599, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
cAMP-specific phosphodiesterase PDE4D2
A, B, C, D
360Homo sapiensMutation(s): 0 
Gene Names: PDE4D2
UniProt & NIH Common Fund Data Resources
Find proteins for Q08499 (Homo sapiens)
Explore Q08499 
Go to UniProtKB:  Q08499
PHAROS:  Q08499
GTEx:  ENSG00000113448 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ08499
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ROL

Download Ideal Coordinates CCD File 
G [auth A],
J [auth B],
M [auth C],
P [auth D]
C16 H21 N O3
Query on ZN

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
H [auth B]
I [auth B]
K [auth C]
E [auth A],
F [auth A],
H [auth B],
I [auth B],
K [auth C],
L [auth C],
N [auth D],
O [auth D]
Binding Affinity Annotations 
IDSourceBinding Affinity
ROL Binding MOAD:  1OYN IC50: 550 (nM) from 1 assay(s)
PDBBind:  1OYN IC50: 550 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.266 
  • R-Value Observed: 0.233 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.785α = 90
b = 111.529β = 90
c = 160.025γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata 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: 2003-07-15
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-14
    Changes: Data collection, Database references, Derived calculations