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 2.1 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: https://doi.org/10.1038/367243a0
  • Primary Citation of Related Structures:  
    1CQE, 1PRH

  • 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. 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.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (PROSTAGLANDIN H2 SYNTHASE-1)
A, B
580Ovis ariesMutation(s): 0 
EC: 1.14.99.1
UniProt
Find proteins for P05979 (Ovis aries)
Explore P05979 
Go to UniProtKB:  P05979
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05979
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D, E, F, G
C, D, E, F, G, H
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
FLP BindingDB:  1CQE Ki: min: 75, max: 1000 (nM) from 3 assay(s)
IC50: min: 10, max: 2000 (nM) from 9 assay(s)
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
  • Version 2.1: 2023-12-27
    Changes: Data collection, Database references, Structure summary