Crystal structure of Superoxide dismutase from P. Marinus

Experimental Data Snapshot

  • Resolution: 1.86 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

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Structures of PmSOD1 and PmSOD2, two superoxide dismutases from the protozoan parasite Perkinsus marinus

Asojo, O.A.Schott, E.J.Vasta, G.R.Silva, A.M.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 1072-1075

  • DOI: https://doi.org/10.1107/S1744309106040425
  • Primary Citation of Related Structures:  
    2CW2, 2CW3

  • PubMed Abstract: 

    Perkinsus marinus, a facultative intracellular parasite of the eastern oyster Crassostrea virginica, is responsible for mass mortalities of oyster populations. P. marinus trophozoites survive and proliferate within oyster hemocytes, invading most tissues and fluids, thus causing a systemic infection that eventually kills the host. The phagocytosis of P. marinus trophozoites lacks a respiratory burst, suggesting that the parasite has mechanisms that actively abrogate the host's oxidative defense responses. One mechanism and the first line of defense against oxidative damage is the dismutation of superoxide radical to molecular oxygen and hydrogen peroxide by superoxide dismutases (SODs). P. marinus possesses two iron-cofactored SODs, PmSOD1 and PmSOD2. Here, the crystallization and X-ray structures of both PmSOD1 and PmSOD2 are presented.

  • Organizational Affiliation

    Pathology and Microbiology Department, University of Nebraska Medical Center, 986495 Nebraska Med Center, Omaha, NE 68198-6495, USA. oasojo@unmc.edu

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
superoxide dismutase 1
A, B
226Perkinsus marinusMutation(s): 0 
Find proteins for Q8ISJ0 (Perkinsus marinus)
Explore Q8ISJ0 
Go to UniProtKB:  Q8ISJ0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8ISJ0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.86 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.813α = 90
b = 62.451β = 95.54
c = 57.354γ = 90
Software Package:
Software NamePurpose
MAR345data collection
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-07-04
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2024-03-13
    Changes: Data collection, Database references, Derived calculations