title: Identification and characterization of four new tra cistrons on the E. coli K12 sex factor F.
mesh_terms: D003227:Conjugation, Genetic; D004926:Escherichia coli / Q000235:genetics*; D005144:F Factor; D005796:Genes; D005816:Genetic Complementation Test; D008040:Genetic Linkage; D009154:Mutation; D009876:Operon; D010641:Phenotype