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Comparative Study
. 1991 Jan;173(1):398-400.
doi: 10.1128/jb.173.1.398-400.1991.

Cloning and sequencing of the beta-lactam hydroxylase gene (cefF) from Streptomyces clavuligerus: gene duplication may have led to separate hydroxylase and expandase activities in the actinomycetes

S Kovacevic  1 , J R Miller
Affiliations
Comparative Study

Cloning and sequencing of the beta-lactam hydroxylase gene (cefF) from Streptomyces clavuligerus: gene duplication may have led to separate hydroxylase and expandase activities in the actinomycetes

S Kovacevic et al. J Bacteriol. 1991 Jan.

Abstract

The deacetylcephalosporin C synthetase (hydroxylase) gene from Streptomyces clavuligerus has been cloned and sequenced. The open reading frame codes for a protein with an Mr of 34,584. The hydroxylase gene (cefF) is closely linked to the epimerase gene (cefD) and the expandase gene (cefE) and is transcribed in the opposite orientation. The hydroxylase and expandase genes are 59 and 71% identical at the amino acid and DNA levels, respectively. cefE and cefF may have arisen from a gene duplication in the actinomycetes.

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References

    1. J Bacteriol. 1987 Apr;169(4):1611-8 - PubMed
    1. Proc Natl Acad Sci U S A. 1987 Aug;84(16):5705-9 - PubMed
    1. Gene. 1988;62(2):187-96 - PubMed
    1. J Bacteriol. 1989 Feb;171(2):754-60 - PubMed
    1. Med Res Rev. 1989 Apr-Jun;9(2):245-64 - PubMed

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