1MY6 image
Entry Detail
PDB ID:
1MY6
Keywords:
OXIDOREDUCTASE
Title:
The 1.6 A Structure of Fe-Superoxide Dismutase from the thermophilic cyanobacterium Thermosynechococcus elongatus : Correlation of EPR and Structural Characteristics
Biological Source:
Source Organism:
Thermosynechococcus elongatus
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2002-10-03
Release Date:
2003-07-29
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.60 Å
R-Value Free:
0.23
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 1 21 1
1MY6 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Iron (III) Superoxide Dismutase
Chain IDs:A, B
Chain Length:199
Number of Molecules:2
Biological Source:Thermosynechococcus elongatus
UniProt ID:Q8DIR2 Pfam ID:PF00081, PF02777
Ligand Molecules
FE
Primary Citation
The 1.6 A resolution structure of Fe-superoxide dismutase from the thermophilic cyanobacterium Thermosynechococcus elongatus.
J.BIOL.INORG.CHEM. 8 707 714 (2003)
PMID: 12827458 DOI: 10.1007/s00775-003-0469-0

Abstact

The iron-containing superoxide dismutase (FeSOD) from the thermophilic cyanobacterium Thermosynechococcus elongatus has been isolated. The protein crystallizes readily and we have determined the structure to 1.6 A resolution. This is the first structural characterization of an FeSOD isolated from a cyanobacterium and one of the highest resolution FeSOD structures determined to date. The activity of the T. elongatus FeSOD has been measured both at 25 degrees C and 50 degrees C and it has been spectroscopically characterized. The T. elongatus FeSOD EPR spectra at pH 5.1, 7.5 and 10.0 are similar. This indicates that no change in the geometry of the Fe(III) site occurs over a wide range of pH. This is in contrast to the other FeSODs described in the literature.

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Primary Citation of related structures
1MY6