1Z1L

The Crystal Structure of the Phosphodiesterase 2A Catalytic Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Determinants for Inhibitor Specificity and Selectivity in PDE2A Using the Wheat Germ in Vitro Translation System.

Iffland, A.Kohls, D.Low, S.Luan, J.Zhang, Y.Kothe, M.Cao, Q.Kamath, A.V.Ding, Y.H.Ellenberger, T.

(2005) Biochemistry 44: 8312-8325

  • DOI: 10.1021/bi047313h

  • PubMed Abstract: 
  • Phosphodiesterases (PDEs) modulate signaling by cyclic nucleotides in diverse processes such as cardiac contractility, platelet aggregation, lipolysis, glycogenolysis, and smooth muscle contraction. Cyclic guanosine monophosphate (cGMP) stimulated hu ...

    Phosphodiesterases (PDEs) modulate signaling by cyclic nucleotides in diverse processes such as cardiac contractility, platelet aggregation, lipolysis, glycogenolysis, and smooth muscle contraction. Cyclic guanosine monophosphate (cGMP) stimulated human phosphodiesterase 2 (PDE2) is expressed mainly in brain and heart tissues. PDE2A is involved in the regulation of blood pressure and fluid homeostasis by the atrial natriuretic peptide (ANP), making PDE2-type enzymes important targets for drug discovery. The design of more potent and selective inhibitors of PDE2A for the treatment of heart disease would be greatly aided by the identification of active site residues in PDE2A that determine substrate and inhibitor selectivity. The identification of active site residues through traditional mutational studies involves the time-consuming and tedious purification of a large number of mutant proteins from overexpressing cells. Here we report an alternative approach to rapidly produce active site mutants of human PDE2A and identify their enzymatic properties using a wheat germ in vitro translation (IVT, also known as cell-free translation) system. We also present the crystal structure of the catalytic domain of human PDE2A determined at 1.7 A resolution, which provided a framework for the rational design of active site mutants. Using a rapid IVT approach for expression of human PDE2A mutants, we identified the roles of active site residues Asp811, Gln812, Ile826, and Tyr827 in inhibitor and substrate selectivity for PDE2A.


    Organizational Affiliation

    Department of Biology, Pfizer Research Technology Center, Cambridge, Massachusetts 02139, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cGMP-dependent 3',5'-cyclic phosphodiesterase
A
345Homo sapiensMutation(s): 0 
Gene Names: PDE2A
EC: 3.1.4.17
Find proteins for O00408 (Homo sapiens)
Go to Gene View: PDE2A
Go to UniProtKB:  O00408
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
ZN
Query on ZN

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

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Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.206 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 90.033α = 90.00
b = 102.549β = 90.00
c = 81.598γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNXrefinement
HKL-2000data collection
HKL-2000data reduction
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-21
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance