6F8U

Crystal structure of the PDE4D catalytic domain in complex with GEBR-20b


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Molecular Bases of PDE4D Inhibition by Memory-Enhancing GEBR Library Compounds.

Prosdocimi, T.Mollica, L.Donini, S.Semrau, M.S.Lucarelli, A.P.Aiolfi, E.Cavalli, A.Storici, P.Alfei, S.Brullo, C.Bruno, O.Parisini, E.

(2018) Biochemistry 57: 2876-2888

  • DOI: https://doi.org/10.1021/acs.biochem.8b00288
  • Primary Citation of Related Structures:  
    6F6U, 6F8R, 6F8T, 6F8U, 6F8V, 6F8W, 6F8X, 6FDC

  • PubMed Abstract: 

    Selected members of the large rolipram-related GEBR family of type 4 phosphodiesterase (PDE4) inhibitors have been shown to facilitate long-term potentiation and to improve memory functions without causing emetic-like behavior in rodents. Despite their micromolar-range binding affinities and their promising pharmacological and toxicological profiles, few if any structure-activity relationship studies have been performed to elucidate the molecular bases of their action. Here, we report the crystal structure of a number of GEBR library compounds in complex with the catalytic domain of PDE4D as well as their inhibitory profiles for both the long PDE4D3 isoform and the catalytic domain alone. Furthermore, we assessed the stability of the observed ligand conformations in the context of the intact enzyme using molecular dynamics simulations. The longer and more flexible ligands appear to be capable of forming contacts with the regulatory portion of the enzyme, thus possibly allowing some degree of selectivity between the different PDE4 isoforms.


  • Organizational Affiliation

    Center for Nano Science and Technology @ PoliMi , Istituto Italiano di Tecnologia , via Giovanni Pascoli 70/3 , 20133 Milano , Italy.


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
343Homo 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
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CZQ (Subject of Investigation/LOI)
Query on CZQ

Download Ideal Coordinates CCD File 
H [auth A],
K [auth B],
L [auth B]
2-[(~{E})-[4-[bis(fluoranyl)methoxy]-3-cyclopentyloxy-phenyl]methylideneamino]oxy-1-[(2~{R},6~{R})-2,6-dimethylmorpholin-4-yl]ethanone
C21 H28 F2 N2 O5
YRGXPDDUADZCCU-BAMVQPFASA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A],
I [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
G [auth A],
J [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
CZQ Binding MOAD:  6F8U IC50: 800 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.166 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.672α = 90
b = 98.669β = 90
c = 119.644γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
PHENIXphasing
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-16
    Type: Initial release
  • Version 1.1: 2018-05-23
    Changes: Data collection, Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Derived calculations, Refinement description