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Fluorouracil and the isolation of mutants lacking uridine phosphorylase in Escherichia coli: Location of the gene


A selective technique is described for the isolation of mutants of Escherichia coli lacking uridine phosphorylase and the location of the gene specifying this enzyme on the bacterial chromosome is determined. Using strains with appropriate lesions it is shown that there are three routes via which 5-fluorouracil can be converted to compounds which inhibit cell growth.

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Communicated by P. Starlinger

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Pritchard, R.H., Ahmad, S.I. Fluorouracil and the isolation of mutants lacking uridine phosphorylase in Escherichia coli: Location of the gene. Molec. Gen. Genet. 111, 84–88 (1971).

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  • Enzyme
  • Escherichia Coli
  • Cell Growth
  • Uridine
  • Phosphorylase