An efficient method for the expression and reconstitution of thermostable Mn/Fe superoxide dismutase from Aeropyrum pernix K1

Hee Jin Lee, Hye Won Kwon, Jong Uk Koh, Dong Kuk Lee, Ja Young Moon, Kwang Hoon Kong

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

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 languageEnglish
Pages (from-to)727-731
Number of pages5
JournalJournal of Microbiology and Biotechnology
Volume20
Issue number4
DOIs
StatePublished - Apr 2010

Keywords

  • Aeropyrum pernix
  • APE0743
  • GST tag
  • Reconstitution
  • Superoxide dismutase
  • Thermostable enzyme

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