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. 1974 Jun;118(3):778-82.
doi: 10.1128/jb.118.3.778-782.1974.

Mapping loci for surface exclusion and incompatibility on the F factor of Escherichia coli K-12

N Willetts

Mapping loci for surface exclusion and incompatibility on the F factor of Escherichia coli K-12

N Willetts. J Bacteriol. 1974 Jun.

Abstract

A series of Hfr deletion strains carrying deletions extending different distances into the integrated F factor have been used to map loci for surface exclusion (traS) and for incompatibility (inc) on the Escherichia coli K-12 sex factor F. traS mapped between traG and traD. It forms a part of the large operon, including all the known transfer genes except traJ, and is co-controlled with these. The product of traS is not required for formation of the F pilus. inc mapped between the phi(R) (11) locus and the origin of transfer; it is therefore one of the earliest loci transferred during conjugation.

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