1OK2 Regulator Of Complement Pathway date Jul 16, 2003
title Decay Accelerating Factor (Cd55): The Structure Of An Intact Complement Regulator.
authors P.Lukacik, P.Roversi, J.White, D.Esser, G.P.Smith, J.Billington, P.A.Williams, P.M.Rudd, M.R.Wormald, M.D.M.Crispin, C.M.Radclif R.A.Dwek, D.J.Evans, B.P.Morgan, R.A.G.Smith, S.M.Lea
compound source
Molecule: Complement Decay-Accelerating Factor
Chain: A, B
Fragment: Four Extracellular Scr Domains Residues 35-285
Synonym: Cd55, Cr, Daf
Engineered: Yes
Other_details: Modelled Glycerols, Acetates And Sulphates F Crystallisation Buffer
 Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Other_details: Human Sequence Expressed In E.Coli.
symmetry Space Group: P 1
R_factor
R_Free NULL
crystal
cell
length a length b length c angle alpha angle beta angle gamma
47.580 55.620 61.530 86.56 84.44 64.22
method X-Ray Diffractionresolution 2.50 Å
ligand ACT, GOL, SO4 enzyme
related structures by homologous chain: 1OJW, 1OJY
Primary referenceComplement regulation at the molecular level: the structure of decay-accelerating factor., Lukacik P, Roversi P, White J, Esser D, Smith GP, Billington J, Williams PA, Rudd PM, Wormald MR, Harvey DJ, Crispin MD, Radcliffe CM, Dwek RA, Evans DJ, Morgan BP, Smith RA, Lea SM, Proc Natl Acad Sci U S A 2004 Feb 3;101(5):1279-84. Epub 2004 Jan 20. PMID:14734808
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (93 Kb) [Save to disk]
  • Biological Unit Coordinates (1ok2.pdb1.gz) 87 Kb
  • LPC: Ligand-Protein Contacts for 1OK2
  • CSU: Contacts of Structural Units for 1OK2
  • Likely Quarternary Molecular Structure file(s) for 1OK2
  • Structure Factors (233 Kb)
  • Retrieve 1OK2 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1OK2 from S2C, [Save to disk]
  • Re-refined 1ok2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 1OK2 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
    • Visual 3D analysis of 1OK2
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1OK2, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ok2a1, region A:1-64 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2a3, region A:129-190 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2a4, region A:191-254 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2a2, region A:65-128 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2b3, region B:129-190 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2b4, region B:191-254 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2b1, region B:2-64 [Jmol] [rasmolscript] [script source]
        - Domain d1ok2b2, region B:65-128 [Jmol] [rasmolscript] [script source]
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1ok2] [1ok2_B] [1ok2_A]
  • SWISS-PROT database: [P08174]
  • Domain organization of [DAF_HUMAN] by SWISSPFAM
  • Domain found in 1OK2: [CCP ] by SMART
    • Other resources with information on 1OK2
  • Community annotation for 1OK2 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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