title: Isolation of conjugation-constitutive mutants of colicin factor Ib.
mesh_terms: D003087:Colicins; D003227:Conjugation, Genetic; D004926:Escherichia coli; D005111:Extrachromosomal Inheritance; D005796:Genes; D005809:Genes, Regulator; D012486:Salmonella typhimurium
chemical_list: D003087:Colicins