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| Description: Structure of a bacterial nucleoid, showing independent domains of supercoiling, each stabilized by binding to protein: The term plectonemic refers to the type of supercoiling observed, with DNA strands intertwined in a regular way. The 1000 nm diameter of the structure allows it to fit within a bacterial cell that may be 2 to 5 mm in length. An alternative form of negative supercoiling, solenoidal, allows greater compaction and is seen in chromatin. Picture Stats: Views: 323 Filesize: 238.6kB Height: 622 Width: 599 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=34912 |