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  • Title: Molecular cloning and nucleotide sequence determination of the Bacillus stearothermophilus NCA 1503 superoxide dismutase gene and its overexpression in Escherichia coli.
    Author: Brehm JK, Chambers SP, Brown KJ, Atkinson T, Minton NP.
    Journal: Appl Microbiol Biotechnol; 1991 Dec; 36(3):358-63. PubMed ID: 1367808.
    Abstract:
    The gene (sod) encoding Bacillus stearothermophilus Mn-superoxide dismutase (MnSOD) has been cloned in Escherichia coli and its entire nucleotide sequence determined. With the exception of the post-translationally cleaved N-terminal methionine residue, the predicted amino acid sequence exhibits complete identity to the previously determined amino acid sequence. The recombinant MnSOD was shown to be functionally active in E. coli both in vitro and in vivo, and was expressed to 49% of the soluble cell protein by coupling its transcription to the E. coli trp promoter. The sequenced region of DNA was also found to encompass a second open reading frame. The putative encoded polypeptide exhibited no significant primary sequence homology to any currently characterised protein.
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