title: S1 nuclease converts relaxed circular closed duplex DNA to open linear DNA of unit length.
mesh_terms: D004270:DNA, Circular / Q000378:metabolism; D004277:DNA, Single-Stranded; D004279:DNA, Viral / Q000378:metabolism; D003851:Deoxyribonucleases; D013539:Simian virus 40
chemical_list: D004270:DNA, Circular; D004277:DNA, Single-Stranded; D004279:DNA, Viral; D003851:Deoxyribonucleases