5WH6

Crystal structure of PDE4D2 in complex with inhibitor (S_Zl-n-91)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 

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This is version 1.3 of the entry. See complete history


Literature

Identification of a PDE4-Specific Pocket for the Design of Selective Inhibitors.

Feng, X.Wang, H.Ye, M.Xu, X.T.Xu, Y.Yang, W.Zhang, H.T.Song, G.Ke, H.

(2018) Biochemistry 57: 4518-4525

  • DOI: https://doi.org/10.1021/acs.biochem.8b00336
  • Primary Citation of Related Structures:  
    5WH5, 5WH6

  • PubMed Abstract: 

    Inhibitors of phosphodiesterases (PDEs) have been widely studied as therapeutics for the treatment of human diseases, but improvement of inhibitor selectivity is still desirable for the enhancement of inhibitor potency. Here, we report identification of a water-containing subpocket as a PDE4-specific pocket for inhibitor binding. We designed against the pocket and synthesized two enantiomers of PDE4 inhibitor Zl-n-91. The ( S)-Zl-n-91 enantiomer showed IC 50 values of 12 and 20 nM for the catalytic domains of PDE4D2 and PDE4B2B, respectively, selectivity several thousand-fold greater than those of other PDE families, and potent neuroprotection activities. Crystal structures of the PDE4D2 catalytic domain in complex with each Zl-n-91 enantiomer revealed that ( S)-Zl-n-91 but not ( R)-Zl-n-91 formed a hydrogen bond with the bound water in the pocket, thus explaining its higher affinity. The structural superposition between the PDE families revealed that this water-containing subpocket is unique to PDE4 and thus valuable for the design of PDE4 selective inhibitors.


  • Organizational Affiliation

    School of Pharmaceutical Engineering and Life Sciences , Changzhou University , Changzhou , Jiangsu 213164 , P. R. China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
cAMP-specific 3',5'-cyclic phosphodiesterase 4D
A, B
507Homo sapiensMutation(s): 0 
Gene Names: PDE4DDPDE3
EC: 3.1.4.53
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
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
AKJ BindingDB:  5WH6 IC50: min: 12, max: 26 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.948α = 90
b = 80.197β = 90
c = 163.67γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM59791

Revision History  (Full details and data files)

  • Version 1.0: 2018-07-18
    Type: Initial release
  • Version 1.1: 2019-07-31
    Changes: Data collection, Database references
  • Version 1.2: 2020-01-01
    Changes: Author supporting evidence
  • Version 1.3: 2024-03-13
    Changes: Data collection, Database references, Derived calculations