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. 1989 Jun;171(6):3158–3161. doi: 10.1128/jb.171.6.3158-3161.1989

Characterization of a purF operon mutation which affects colicin V production.

M J Fath 1, H K Mahanty 1, R Kolter 1
PMCID: PMC210030  PMID: 2542219

Abstract

A mini-Tn10-kan insertion mutation identified a gene in the chromosome of Escherichia coli required for colicin V production from plasmid pColV-K30. With the complete restriction map of E. coli, the mutation was rapidly mapped to 50.0 min, within the purF operon. Sequence analysis showed that the insertion occurred in a gene with no previously known function which is located directly upstream of purF. We designated this gene cvpA for colicin V production. The mutant requires adenine for growth, probably because of a polar effect on purF expression. However, an adenine auxotroph showed no defect in colicin V production, suggesting that the cvpA mutation is responsible for the effect on colicin V production. Two possible models of cvpA1 allele function are discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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