2CB2

Sulfur Oxygenase Reductase from Acidianus Ambivalens


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

X-Ray Structure of a Self-Compartmentalizing Sulfur Cycle Metalloenzyme

Urich, T.Gomes, C.M.Kletzin, A.Frazao, C.

(2006) Science 311: 996

  • DOI: 10.1126/science.1120306
  • Primary Citation of Related Structures:  
    2CB2

  • PubMed Abstract: 
  • Numerous microorganisms oxidize sulfur for energy conservation and contribute to the global biogeochemical sulfur cycle. We have determined the 1.7 angstrom-resolution structure of the sulfur oxygenase reductase from the thermoacidophilic archaeon Ac ...

    Numerous microorganisms oxidize sulfur for energy conservation and contribute to the global biogeochemical sulfur cycle. We have determined the 1.7 angstrom-resolution structure of the sulfur oxygenase reductase from the thermoacidophilic archaeon Acidianus ambivalens, which catalyzes an oxygen-dependent disproportionation of elemental sulfur. Twenty-four monomers form a large hollow sphere enclosing a positively charged nanocompartment. Apolar channels provide access for linear sulfur species. A cysteine persulfide and a low-potential mononuclear non-heme iron site ligated by a 2-His-1-carboxylate facial triad in a pocket of each subunit constitute the active sites, accessible from the inside of the sphere. The iron is likely the site of both sulfur oxidation and sulfur reduction.


    Related Citations: 
    • The Sulfur Oxygenase Reductase from Acidianus Ambivalens is an Icosatetramer as Shown by Crystallization and Patterson Analysis
      Urich, T., Coelho, R., Kletzin, A., Frazao, C.
      (2005) Biochim Biophys Acta 1747: 267
    • Molecular Characterization of the Sor Gene, which Encodes the Sulfur Oxygenase-Reductase of the Thermoacidophilic Archaeum Desulfurolobus Ambivalens
      Kletzin, A.
      (1992) J Bacteriol 174: 5854
    • Coupled Enzymatic Production of Sulfite, Thiosulfate, and Hydrogen Sulfide from Sulfur: Purification and Properties of a Sulfur Oxygenase Reductase from the Facultatively Anaerobic Archaebacterium Desulfurolobus Ambivalens
      Kletzin, A.
      (1989) J Bacteriol 171: 1638

    Organizational Affiliation

    Darmstadt University of Technology, Institute of Microbiology and Genetics, Schnittspahnstrasse 10, 64287 Darmstadt, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SULFUR OXYGENASE REDUCTASEA, B, C, D, E, F318Acidianus ambivalensMutation(s): 0 
Gene Names: sor
EC: 1.13.11.55
Find proteins for P29082 (Acidianus ambivalens)
Explore P29082 
Go to UniProtKB:  P29082
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FE
Query on FE

Download CCD File 
A, B, C, D, E, F
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSS
Query on CSS
A,B,C,D,E,FL-PEPTIDE LINKINGC3 H7 N O2 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162.15α = 90
b = 162.15β = 90
c = 154.93γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXDphasing
SOLVEphasing
ARP/wARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-02-24
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-06-28
    Changes: Refinement description
  • Version 1.4: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation
  • Version 1.5: 2019-07-24
    Changes: Data collection