title: Mapping loci for surface exclusion and incompatibility on the F factor of Escherichia coli K-12.
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.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D003227:Conjugation, Genetic; D004926:Escherichia coli / Q000254:growth & development*; D005111:Extrachromosomal Inheritance; D005796:Genes; D009154:Mutation; D011995:Recombination, Genetic; D012723:Sex