1TO5

Structure of the cytosolic Cu,Zn SOD from S. mansoni


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.176 

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This is version 1.2 of the entry. See complete history


Literature

Structure of the cytosolic Cu,Zn superoxide dismutase from Schistosoma mansoni.

Cardoso, R.M.Silva, C.H.Ulian de Araujo, A.P.Tanaka, T.Tanaka, M.Garratt, R.C.

(2004) Acta Crystallogr D Biol Crystallogr 60: 1569-1578

  • DOI: 10.1107/S0907444904016798
  • Primary Citation of Related Structures:  
    1TO4, 1TO5

  • PubMed Abstract: 
  • Cu,Zn superoxide dismutase (Cu,Zn SOD) is an essential enzyme for protecting cells from the toxic effects of reactive oxygen species. In humans, two distinct Cu,Zn SOD genes are located on chromosomes 4 and 21 and mutations in the latter have been associated with familial amyotrophic lateral sclerosis ...

    Cu,Zn superoxide dismutase (Cu,Zn SOD) is an essential enzyme for protecting cells from the toxic effects of reactive oxygen species. In humans, two distinct Cu,Zn SOD genes are located on chromosomes 4 and 21 and mutations in the latter have been associated with familial amyotrophic lateral sclerosis. Similarly, schistosomes (trematode parasites responsible for the chronically debilitating disease schistosomiasis) also produce two distinct Cu,Zn SODs, in this case one cytosolic and one bearing a signal peptide. The crystal structure of the cytosolic form of the enzyme from the human trematode Schistosoma mansoni (SmCtSOD) was solved and refined to a resolution of 2.2 A (space group P2(1)2(1)2(1), R = 17.6% and R(free) = 24.1%) and 1.55 A (space group P2(1), R = 15.7% and R(free) = 17.1%). This is the first report of a crystal structure of a Cu,Zn superoxide dismutase derived from a human parasite. Alternate positions for the catalytic copper and its water ligand were refined for the 1.55 A SmCtSOD model, but the most interesting structural differences between SmCtSOD and the human homologue reside in the loops used for electrostatic guidance of the substrate to the enzyme active site.


    Related Citations: 
    • Expression and preliminary X-ray diffraction studies of cytosolic Cu,Zn superoxide dismutase from Schistosoma mansoni
      Cardoso, R.M.F., Silva, C.H.T.P., Araujo, A.P.U., Tanaka, T., Tanaka, M., Garratt, R.C.G.
      (2001) Acta Crystallogr D Biol Crystallogr 57: 1877

    Organizational Affiliation

    Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador Sãocarlense 400, São Carlos, SP, 13566-590, Brazil.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Superoxide dismutaseA, B, C, D156Schistosoma mansoniMutation(s): 0 
Gene Names: SOD
EC: 1.15.1.1
UniProt
Find proteins for Q01137 (Schistosoma mansoni)
Explore Q01137 
Go to UniProtKB:  Q01137
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01137
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.64α = 90
b = 78.24β = 90
c = 95.18γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-31
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance