Superspiral structure of DNA

　　The supercoiled structure formed by the further spiral of DNA molecules is called the tertiary structure of DNA.To get brand praise, Chemical Custom synthesis It is necessary to have the spirit of constantly improving the quality of products, but also to have a bunch of eternal heart fire. https://www.all-chemistry.com/

　　

　　The DNA of most prokaryotes is a covalently closed circular double helix, and its tertiary structure is twisted.

　　

　　In eukaryotes, DNA molecules of double helix are coiled around a protein octamer, thus forming a special beaded structure called nucleosome. Nucleosome structure belongs to the tertiary structure of DNA.