5IKT Oxidoreductase date Mar 03, 2016
title The Structure Of Tolfenamic Acid Bound To Human Cyclooxygena
authors B.J.Orlando, M.G.Malkowski
compound source
Molecule: Prostaglandin Gh Synthase 2
Chain: A, B
Synonym: Cyclooxygenase-2,Cox-2,Phs II,Prostaglandin H2 Syn Pghs-2,Prostaglandin-Endoperoxide Synthase 2;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Ptgs2, Cox2
Expression_system: Spodoptera Frugiperda
Expression_system_taxid: 7108
symmetry Space Group: I 2 2 2
R_factor 0.180 R_Free 0.220
length a length b length c angle alpha angle beta angle gamma
126.669 149.759 185.726 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.45 Å
ligand COH, MAN, NAG, PO4, TLF enzyme Oxidoreductase E.C. BRENDA
A, B
  • peroxidase activity

  • Primary referenceSubstrate Selective Inhibition of Cyclooxygenase-2 by Fenamic Acid Derivatives is Dependent on Peroxide Tone., Orlando BJ, Malkowski MG, J Biol Chem. 2016 May 20. pii: jbc.M116.725713. PMID:27226593
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (370 Kb) [Save to disk]
  • Biological Unit Coordinates (5ikt.pdb1.gz) 361 Kb
  • LPC: Ligand-Protein Contacts for 5IKT
  • CSU: Contacts of Structural Units for 5IKT
  • Structure Factors (941 Kb)
  • Retrieve 5IKT in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 5IKT from S2C, [Save to disk]
  • Re-refined 5ikt structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
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  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • Fold representative 5ikt from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [5ikt] [5ikt_A] [5ikt_B]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 5IKT: [EGF ] by SMART
  • Other resources with information on 5IKT
  • Community annotation for 5IKT at PDBWiki (http://pdbwiki.org)

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