Abstract
The gene APE0743 encoding the superoxide dismutase (ApSOD) of a hyperthermophilic archaeon Aeropyrum pernix K1 was cloned and overexpressed as a GST fusion protein at a high level in Escherichia coli. The expressed protein was simply purified by the process of glutathione affinity chromatography and thrombin treatment. The ApSOD was a homodimer of 25 kDa subunits and a cambialistic SOD, which was active with either Fe(II) or Mn(II) as a cofactor. The ApSOD was highly stable against high temperature. This thermostable ApSOD is expected to be applicable as a useful biocatalyst for medicine and bioindustrial processes.
| Original language | English |
|---|---|
| Pages (from-to) | 727-731 |
| Number of pages | 5 |
| Journal | Journal of Microbiology and Biotechnology |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2010 |
Keywords
- Aeropyrum pernix
- APE0743
- GST tag
- Reconstitution
- Superoxide dismutase
- Thermostable enzyme