title: DNA: sequence, structure and supercoiling. The twentieth Colworth medal lecture.
mesh_terms: D000079:Acetaldehyde / Q000031:analogs & derivatives; D001483:Base Sequence; D004247:DNA; D004262:DNA Restriction Enzymes; D004278:DNA, Superhelical; D004720:Endonucleases; D006860:Hydrogen Bonding; D009690:Nucleic Acid Conformation; D015719:Single-Strand Specific DNA and RNA Endonucleases; D013329:Structure-Activity Relationship
chemical_list: D004278:DNA, Superhelical; C038235:bromoacetaldehyde; D004247:DNA; D004720:Endonucleases; D004262:DNA Restriction Enzymes; D015719:Single-Strand Specific DNA and RNA Endonucleases; D000079:Acetaldehyde