A nucleoid gently released from E. coli appears as 30-100 tightly wound loops, each defined by anchoring:

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Quizplus · Accepted Answer

The nucleoid in E. coli is composed of tightly wound loops of DNA, anchored by histone-like proteins. These proteins, such as HU and IHF, are structurally similar to histones found in eukaryotic chromatin and help to compact and organize DNA within the bacterial cell. Supercoils, gyrase, and topoisomerase may also play a role in the organization of the nucleoid, but they do not anchor the DNA into specific loops.

A Nucleoid Gently Released from E