1CQE

PROSTAGLANDIN H2 SYNTHASE-1 COMPLEX WITH FLURBIPROFEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 2.0 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:  
    1PRH, 1CQE

  • 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 factor domain, a membrane-binding motif and an enzymatic domain ...

    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: 
    • 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
    • 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 Biol 2: 637
    • X-Ray Crystal Structure of Canine Myeloperoxidase at 3 Angstroms Resolution
      Zeng, J., Fenna, R.E.
      (1992) J Mol Biol 226: 185

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (PROSTAGLANDIN H2 SYNTHASE-1)A, B580Ovis ariesMutation(s): 0 
Gene Names: PTGS1COX1
EC: 1.14.99.1
UniProt
Find proteins for P05979 (Ovis aries)
Explore P05979 
Go to UniProtKB:  P05979
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseC, D, E, F, G, H2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FLPKi:  75   nM  BindingDB
FLPKi:  1000   nM  BindingDB
FLPIC50:  12   nM  BindingDB
FLPIC50:  30   nM  BindingDB
FLPIC50:  2000   nM  BindingDB
FLPIC50:  150   nM  BindingDB
FLPIC50:  11   nM  BindingDB
FLPIC50:  1995   nM  BindingDB
FLPIC50:  10   nM  BindingDB
FLPKi:  410   nM  BindingDB
FLPIC50:  500   nM  BindingDB
FLPIC50:  170   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.4α = 90
b = 210.3β = 90
c = 233.1γ = 90
Software Package:
Software NamePurpose
MADNESSdata collection
PROCORdata scaling
CCP4data reduction
MLPHAREphasing
CCP4model building
X-PLORrefinement
MADNESSdata reduction
PROCORdata reduction
CCP4data scaling
CCP4phasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-06-30
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Advisory, Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary