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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Peptide transport in Salmonella typhimurium: molecular cloning and characterization of the oligopeptide permease genes.

The oligopeptide permease is encoded by at least four genes which are transcribed as a single operon. We cloned and characterized this operon from Salmonella typhimurium, as well as the flanking genes, tonB, ana and a new gene, cwd, which affects cell wall synthesis. We correlated the physical map of opp DNA with a detailed genetic map of the opp operon and the individual opp genes were accurately located with respect to various restriction sites by Southern blotting. The region of the chromosome near opp was found to be highly unstable with deletions arising at a highly frequency. The operon also contains hot-spots for IS1 and IS5 insertions.[1]


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