1DDX

CRYSTAL STRUCTURE OF A MIXTURE OF ARACHIDONIC ACID AND PROSTAGLANDIN BOUND TO THE CYCLOOXYGENASE ACTIVE SITE OF COX-2: PROSTAGLANDIN STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.324 
  • R-Value Work: 0.267 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural insights into the stereochemistry of the cyclooxygenase reaction.

Kiefer, J.R.Pawlitz, J.L.Moreland, K.T.Stegeman, R.A.Hood, W.F.Gierse, J.K.Stevens, A.M.Goodwin, D.C.Rowlinson, S.W.Marnett, L.J.Stallings, W.C.Kurumbail, R.G.

(2000) Nature 405: 97-101

  • DOI: 10.1038/35011103
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cyclooxygenases are bifunctional enzymes that catalyse the first committed step in the synthesis of prostaglandins, thromboxanes and other eicosanoids. The two known cyclooxygenases isoforms share a high degree of amino-acid sequence similarity, stru ...

    Cyclooxygenases are bifunctional enzymes that catalyse the first committed step in the synthesis of prostaglandins, thromboxanes and other eicosanoids. The two known cyclooxygenases isoforms share a high degree of amino-acid sequence similarity, structural topology and an identical catalytic mechanism. Cyclooxygenase enzymes catalyse two sequential reactions in spatially distinct, but mechanistically coupled active sites. The initial cyclooxygenase reaction converts arachidonic acid (which is achiral) to prostaglandin G2 (which has five chiral centres). The subsequent peroxidase reaction reduces prostaglandin G2 to prostaglandin H2. Here we report the co-crystal structures of murine apo-cyclooxygenase-2 in complex with arachidonic acid and prostaglandin. These structures suggest the molecular basis for the stereospecificity of prostaglandin G2 synthesis.


    Related Citations: 
    • Structural Basis for Selective Inhibition of Cyclooxygenase-2 by Anti- Inflammatory Agents
      Kurumbail, R.G.,Stevens, A.M.,Gierse, J.K.,McDonald, J.J.,Stegeman, R.A.,Pak, J.Y.,Gildehaus, D.,Miyashiro, J.M.,Penning, T.D.,Seibert, K.,Isakson, P.C.,Stallings, W.C.
      (1996) Nature 384: 644


    Organizational Affiliation

    Searle Discovery Research, Monsanto Company, St Louis, Missouri 63198, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PROSTAGLANDIN H2 SYNTHASE-2)
A, B, C, D
552Mus musculusMutation(s): 0 
Gene Names: Ptgs2 (Cox-2, Cox2, Pghs-b, Tis10)
EC: 1.14.99.1
Find proteins for Q05769 (Mus musculus)
Go to UniProtKB:  Q05769
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
PGX
Query on PGX

Download SDF File 
Download CCD File 
A, B, C, D
7-[6-(3-HYDROPEROXY-OCT-1-ENYL)-2,3-DIOXA-BICYCLO[2.2.1]HEPT-5-YL]-HEPT-5-ENOIC ACID
PROSTAGLANDIN G2
C20 H32 O6
SGUKUZOVHSFKPH-YNNPMVKQSA-N
 Ligand Interaction
BOG
Query on BOG

Download SDF File 
Download CCD File 
A, B, C, D
B-OCTYLGLUCOSIDE
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.324 
  • R-Value Work: 0.267 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 180.240α = 90.00
b = 134.800β = 90.00
c = 122.510γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
SCALEPACKdata scaling
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-05-16
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance