1XOM

Catalytic Domain Of Human Phosphodiesterase 4D In Complex With Cilomilast


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for the Activity of Drugs that Inhibit Phosphodiesterases.

Card, G.L.England, B.P.Suzuki, Y.Fong, D.Powell, B.Lee, B.Luu, C.Tabrizizad, M.Gillette, S.Ibrahim, P.N.Artis, D.R.Bollag, G.Milburn, M.V.Kim, S.-H.Schlessinger, J.Zhang, K.Y.J.

(2004) STRUCTURE 12: 2233-2247

  • DOI: 10.1016/j.str.2004.10.004
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Phosphodiesterases (PDEs) comprise a large family of enzymes that catalyze the hydrolysis of cAMP or cGMP and are implicated in various diseases. We describe the high-resolution crystal structures of the catalytic domains of PDE4B, PDE4D, and PDE5A w ...

    Phosphodiesterases (PDEs) comprise a large family of enzymes that catalyze the hydrolysis of cAMP or cGMP and are implicated in various diseases. We describe the high-resolution crystal structures of the catalytic domains of PDE4B, PDE4D, and PDE5A with ten different inhibitors, including the drug candidates cilomilast and roflumilast, for respiratory diseases. These cocrystal structures reveal a common scheme of inhibitor binding to the PDEs: (i) a hydrophobic clamp formed by highly conserved hydrophobic residues that sandwich the inhibitor in the active site; (ii) hydrogen bonding to an invariant glutamine that controls the orientation of inhibitor binding. A scaffold can be readily identified for any given inhibitor based on the formation of these two types of conserved interactions. These structural insights will enable the design of isoform-selective inhibitors with improved binding affinity and should facilitate the discovery of more potent and selective PDE inhibitors for the treatment of a variety of diseases.


    Organizational Affiliation

    Plexxikon, Inc., 91 Bolivar Drive, Berkeley, CA 94710, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cAMP-specific 3',5'-cyclic phosphodiesterase 4D
A, B
349Homo sapiensMutation(s): 0 
Gene Names: PDE4D (DPDE3)
EC: 3.1.4.53
Find proteins for Q08499 (Homo sapiens)
Go to Gene View: PDE4D
Go to UniProtKB:  Q08499
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

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Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-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
CIO
Query on CIO

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Download CCD File 
A, B
CILOMILAST
CIS-4-CYANO-4-[3-(CYCLOPENTYLOXY)-4-METHOXYPHENYL]CYCLOHEXANECARBOXYLIC ACID
C20 H25 N O4
CFBUZOUXXHZCFB-OYOVHJISSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CIOIC50: 10 - 840 nM (84) BINDINGDB
CIOKi: 38 - 200 nM (84) BINDINGDB
CIOIC50: 11 nM BINDINGMOAD
CIOIC50: 11 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 60.486α = 90.00
b = 78.966β = 90.00
c = 164.186γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
Blu-Icedata collection
EPMRphasing
ELVESdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-12-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance