1CQE

PROSTAGLANDIN H2 SYNTHASE-1 COMPLEX WITH FLURBIPROFEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The X-ray crystal structure of the membrane protein prostaglandin H2 synthase-1.

Picot, D.Loll, P.J.Garavito, R.M.

(1994) Nature 367: 243-249

  • DOI: 10.1038/367243a0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The three-dimensional structure of prostaglandin H2 synthase-1, an integral membrane protein, has been determined at 3.5 A resolution by X-ray crystallography. This bifunctional enzyme comprises three independent folding units: an epidermal growth fa ...

    The three-dimensional structure of prostaglandin H2 synthase-1, an integral membrane protein, has been determined at 3.5 A resolution by X-ray crystallography. This bifunctional enzyme comprises three independent folding units: an epidermal growth factor domain, a membrane-binding motif and an enzymatic domain. Two adjacent but spatially distinct active sites were found for its haem-dependent peroxidase and cyclooxygenase activities. The cyclooxygenase active site is created by a long, hydrophobic channel that is the site of non-steroidal anti-inflammatory drug binding. The conformation of the membrane-binding motif strongly suggests that the enzyme integrates into only one leaflet of the lipid bilayer and is thus a monotopic membrane protein.


    Related Citations: 
    • X-Ray Crystal Structure of Canine Myeloperoxidase at 3 Angstroms Resolution
      Zeng, J.,Fenna, R.E.
      (1992) J.Mol.Biol. 226: 185
    • The Structural Basis of Aspirin Activity Inferred from the Crystal Structure of Inactivated Prostaglandin H2 Synthase
      Loll, P.J.,Picot, D.,Garavito, R.M.
      (1995) Nat.Struct.Mol.Biol. 2: 637
    • Synthesis and Use of Iodinated Nonsteroidal Antiinflammatory Drug Analogs as Crystallographic Probes of the Prostaglandin H2 Synthase Cyclooxygenase Active Site
      Loll, P.J.,Picot, D.,Ekabo, O.,Garavito, R.M.
      (1996) Biochemistry 35: 7330


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PROSTAGLANDIN H2 SYNTHASE-1)
A, B
580Ovis ariesMutation(s): 0 
Gene Names: PTGS1 (COX1)
EC: 1.14.99.1
Membrane protein
mpstruct
Group: 
MONOTOPIC MEMBRANE PROTEINS
Sub Group: 
Cyclooxygenases
Protein: 
Ram Prostaglandin H2 synthase-1 (cyclooxygenase-1 or COX-1)
Find proteins for P05979 (Ovis aries)
Go to Gene View: PTGS1
Go to UniProtKB:  P05979
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
NAG
Query on NAG

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

Download SDF File 
Download CCD File 
A, B
B-OCTYLGLUCOSIDE
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
FLP
Query on FLP

Download SDF File 
Download CCD File 
A, B
FLURBIPROFEN
C15 H13 F O2
SYTBZMRGLBWNTM-JTQLQIEISA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FLPKi: 1000 nM (99) BINDINGDB
FLPIC50: 10 - 2000 nM (92) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 99.400α = 90.00
b = 210.300β = 90.00
c = 233.100γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
MADNESSdata collection
CCP4data reduction
PROCORdata reduction
MADNESSdata reduction
CCP4data scaling
MLPHAREphasing
CCP4model building
CCP4phasing
PROCORdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-06-30
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-04
    Type: Advisory, Refinement description