Structure

Generally, the closest to the cell B configuration of DNA double helix conformation, it is very similar to model. DNA and RNA molecule - the double helix area and the formation of transcription DNA molecule hybridization RNA conformation close -. Z - DNA to nucleotide dimers for unit, the Lord left to wound is serrated (Z) chain, the name. This configuration for a nucleotide chain of purine cytosine alternate area. In 1989, the American scientists scanning tunneling microscopy method directly observed double-helix DNA double-helix DNA in 1952, Austria, African American biochemist captains E.c hargaff gadamer check (1905 -), the four determination of DNA base, the content of fat poison and found adenocarcinoma of the number of thymine bases, bird whisper fat with equal the number of cytosine. This makes Watson and crick immediately thought of four bases exist between two corresponding relationship, formed the glands and thymine * matching belt whisper, birds and cytosine matching belt whisper.