Cloning of the iron superoxide dismutase gene (sodB) in Escherichia coli K-12.

A clone overproducing iron superoxide dismutase has been isolated from an Escherichia coli cosmid bank. Subcloning located the gene responsible for iron superoxide dismutase overproduction on a 6.6-kilobase PstI restriction endonuclease fragment. Maxicell analysis, followed by immunological identification of iron superoxide dismutase protein, demonstrated that the structural gene, sodB, of iron superoxide dismutase has been cloned.