title: Escherichia coli type-1 topoisomerases: identification, mechanism, and role in recombination.
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004264:DNA Topoisomerases, Type I / Q000235:genetics* / Q000302:isolation & purification; D004269:DNA, Bacterial / Q000235:genetics; D004274:DNA, Recombinant / Q000378:metabolism*; D004926:Escherichia coli / Q000201:enzymology / Q000235:genetics*; D009690:Nucleic Acid Conformation; D009876:Operon
chemical_list: D004269:DNA, Bacterial; D004274:DNA, Recombinant; D004262:DNA Restriction Enzymes; D004264:DNA Topoisomerases, Type I