2QYK

Crystal structure of PDE4A10 in complex with inhibitor NPV


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of the four subfamilies of phosphodiesterase-4 provide insight into the selectivity of their inhibitors.

Wang, H.Peng, M.S.Chen, Y.Geng, J.Robinson, H.Houslay, M.D.Cai, J.Ke, H.

(2007) Biochem.J. 408: 193-201

  • DOI: 10.1042/BJ20070970
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • PDE4 (phosphodiesterase-4)-selective inhibitors have attracted much attention as potential therapeutics for the treatment of both depression and major inflammatory diseases, but their practical application has been compromised by side effects. A poss ...

    PDE4 (phosphodiesterase-4)-selective inhibitors have attracted much attention as potential therapeutics for the treatment of both depression and major inflammatory diseases, but their practical application has been compromised by side effects. A possible cause for the side effects is that current PDE4-selective inhibitors similarly inhibit isoforms from all four PDE4 subfamilies. The development of PDE4 subfamily-selective inhibitors has been hampered by a lack of structural information. In the present study, we rectify this by providing the crystal structures of the catalytic domains of PDE4A, PDE4B and PDE4D in complex with the PDE4 inhibitor NVP {4-[8-(3-nitrophenyl)-[1,7]naphthyridin-6-yl]benzoic acid} as well as the unliganded PDE4C structure. NVP binds in the same conformation to the deep cAMP substrate pocket and interacts with the same residues in each instance. However, detailed structural comparison reveals significant conformational differences. Although the active sites of PDE4B and PDE4D are mostly comparable, PDE4A shows significant displacements of the residues next to the invariant glutamine residue that is critical for substrate and inhibitor binding. PDE4C appears to be more distal from other PDE4 subfamilies, with certain key residues being disordered. Our analyses provide the first structural basis for the development of PDE4 subfamily-selective inhibitors.


    Organizational Affiliation

    Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599-7260, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cyclic AMP-specific phosphodiesterase HSPDE4A10
A, B
335Homo sapiensMutation(s): 0 
Gene Names: PDE4A (DPDE2)
EC: 3.1.4.53
Find proteins for P27815 (Homo sapiens)
Go to Gene View: PDE4A
Go to UniProtKB:  P27815
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
NPV
Query on NPV

Download SDF File 
Download CCD File 
A, B
4-[8-(3-nitrophenyl)-1,7-naphthyridin-6-yl]benzoic acid
C21 H13 N3 O4
QTNUWEKKZHSUQO-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
NPVIC50: 0.6 - 88 nM (85) BINDINGDB
NPVEC50: 20 nM (100) BINDINGDB
NPVIC50: 3300 nM BINDINGMOAD
NPVIC50: 3300 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.201 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 105.443α = 90.00
b = 105.443β = 90.00
c = 166.103γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
CNSrefinement
AMoREphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-04-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance