4KP6

Crystal structure of human phosphodiesterase 4B (PDE4B) in complex with a [1,3,5]triazine derivative

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history. 


Literature

Discovery of triazines as potent, selective and orally active PDE4 inhibitors.

Gewald, R., Grunwald, C., Egerland, U.

(2013) Bioorg Med Chem Lett 23: 4308-4314

  • DOI: https://doi.org/10.1016/j.bmcl.2013.05.099
  • Primary Citation of Related Structures:  
    4KP6

  • PubMed Abstract: 

    • Expanding on HTS hit 4 afforded a series of [1,3,5]triazine derivatives as novel PDE4 inhibitors. The SAR development and optimization process with the emphasis on ligand efficiency and physicochemical properties led to the discovery of compound 44 as a potent, selective and orally active PDE4 inhibitor ...

    Expanding on HTS hit 4 afforded a series of [1,3,5]triazine derivatives as novel PDE4 inhibitors. The SAR development and optimization process with the emphasis on ligand efficiency and physicochemical properties led to the discovery of compound 44 as a potent, selective and orally active PDE4 inhibitor.

    Organizational Affiliation: 

    BioCrea GmbH, Meissner Strasse 191, 01445 Radebeul, Germany. rainer.gewald@telecolumbus.net



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cAMP-specific 3',5'-cyclic phosphodiesterase 4BA340Homo sapiensMutation(s): 0 
Gene Names: DPDE4, PDE4B
EC: 3.1.4.17 (PDB Primary Data), 3.1.4.53 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q07343 (Homo sapiens)
Explore Q07343 
Go to UniProtKB:  Q07343
PHAROS:  Q07343
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07343
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1S1
Query on 1S1
Download Ideal Coordinates CCD File 
B [auth A]2-ethyl-2-{[4-(methylamino)-6-(1H-1,2,4-triazol-1-yl)-1,3,5-triazin-2-yl]amino}butanenitrile
C12 H17 N9
AQTLNSKLZWRJEV-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
D [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
EDO
Query on EDO
Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
P [auth A],
Q [auth A],
R [auth A],
S [auth A],
T [auth A],
U [auth A],
V [auth A],
W [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
C [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
1S1 PDBBind:  4KP6 IC50: 0.81 (nM) from 1 assay(s)
Binding MOAD:  4KP6 IC50: 0.87 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.332α = 90
b = 53.332β = 90
c = 229.048γ = 90
Software Package:
Software NamePurpose
MAR345data collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-10
    Type: Initial release
  • Version 1.1: 2013-07-17
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Advisory, Refinement description