[Role of the rpoS gene in the regulation of expression of plasmid genes determining the synthesis of C51 microcin].

Abstract excerpt

In cells mutant for the rpoS gene coding the sigma s subunit of RNA polymerase, synthesis of antibiotic microcin C51, which is produced by Escherichia coli, is absent or extremely reduced. In experiments with a cloned promoter of the microcin operon, the sigma s subunit was shown to participate in regulation of transcription of plasmid genes that determine microcin synthesis.

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