title: Relationship between S1 endonuclease-sensitivity and number of superhelical turns in a negatively-twisted DNA.
mesh_terms: D003087:Colicins / Q000096:biosynthesis; D004264:DNA Topoisomerases, Type I; D004269:DNA, Bacterial; D004277:DNA, Single-Stranded; D004278:DNA, Superhelical; D004279:DNA, Viral; D004720:Endonucleases; D004926:Escherichia coli / Q000032:analysis; D006190:Haemophilus / Q000201:enzymology; D009690:Nucleic Acid Conformation; D013539:Simian virus 40; D015719:Single-Strand Specific DNA and RNA Endonucleases
chemical_list: D003087:Colicins; D004269:DNA, Bacterial; D004277:DNA, Single-Stranded; D004278:DNA, Superhelical; D004279:DNA, Viral; D004720:Endonucleases; D015719:Single-Strand Specific DNA and RNA Endonucleases; D004264:DNA Topoisomerases, Type I